Replace common functionality with rust implementation

autostart/autostart.target.j2

@@ -30,3 +30,4 @@ Wants=xresources.service
 Wants=yubikey-touch-detector.service
 Wants=kdeconnect.service
 Wants=color-theme-dark.service
+Wants=workstation-mgr.service

autostart/services/workstation-mgr.service

@@ -0,0 +1,8 @@
+[Unit]
+BindsTo=autostart.target
+After=windowmanager.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/workstation-mgr serve
+Restart=always

i3/config.j2

@@ -209,18 +209,13 @@ assign [class="^Wine$"] $workspace10
     bindsym $mod+Return       exec $terminal
     bindsym $mod+Shift+Return exec $calc
 
-    bindsym F1 exec --no-startup-id $scriptdir/shutdown-menu
+    bindsym F1 exec --no-startup-id workstation-client power menu
-    bindsym F2 exec --no-startup-id $scriptdir/screenmenu
 
-    bindsym $mod+F1 exec --no-startup-id $scriptdir/i3exit lock
+    bindsym $mod+F1 exec --no-startup-id workstation-client power lock
-    bindsym $mod+F4 exec --no-startup-id $scriptdir/i3exit suspend
-    bindsym $mod+Home exec --no-startup-id $scriptdir/shutdown-menu
 
     bindsym $mod+$screenshot exec --no-startup-id sh -c 'maim | xclip -selection clipboard -t image/png'
     bindsym $mod+Shift+$screenshot exec --no-startup-id sh -c 'maim --select | xclip -selection clipboard -t image/png'
 
-    bindsym $mod+Shift+v exec --no-startup-id redshift-toggle
-
     bindsym $mod+$pim_toggle exec --no-startup-id $scriptdir/swap-from-workspace $workspace10
 
 ################################################################################
@@ -313,22 +308,22 @@ bindsym $mod+F9 exec --no-startup-id evolution
 ### SPECIAL KEYBINDS ###########################################################
 ################################################################################
 
-bindsym XF86Sleep exec --no-startup-id $scriptdir/i3exit suspend
+bindsym XF86Sleep exec --no-startup-id workstation-client power lock
-bindsym XF86AudioMute exec --no-startup-id pactl set-sink-mute '@DEFAULT_SINK@' toggle
-bindsym XF86AudioRaiseVolume exec --no-startup-id pactl set-sink-volume '@DEFAULT_SINK@' +5%
-bindsym XF86AudioLowerVolume exec --no-startup-id pactl set-sink-volume '@DEFAULT_SINK@' -5%
 
-bindsym XF86AudioPlay exec --no-startup-id playerctl -p spotify play-pause
+bindsym XF86AudioMute exec        --no-startup-id workstation-client pulseaudio output toggle
-bindsym XF86AudioNext exec --no-startup-id playerctl -p spotify next
+bindsym XF86AudioRaiseVolume exec --no-startup-id workstation-client pulseaudio output inc
-bindsym XF86AudioPrev exec --no-startup-id playerctl -p spotify previous
+bindsym XF86AudioLowerVolume exec --no-startup-id workstation-client pulseaudio output dec
 
-# keys seemingly switched
+bindsym XF86AudioPlay exec --no-startup-id workstation-client spotify toggle
-bindsym XF86MonBrightnessUp   exec --no-startup-id brightnessctl set 8%+ ; exec --no-startup-id $scriptdir/update-status
+bindsym XF86AudioNext exec --no-startup-id workstation-client spotify next
-bindsym XF86MonBrightnessDown exec --no-startup-id brightnessctl set 8%- ; exec --no-startup-id $scriptdir/update-status
+bindsym XF86AudioPrev exec --no-startup-id workstation-client spotify previous
 
-bindsym $mod+m exec     --no-startup-id pactl set-source-mute '@DEFAULT_SOURCE@' toggle
+bindsym XF86MonBrightnessUp   exec --no-startup-id workstation-client brightness inc
-bindsym $mod+space exec --no-startup-id pactl set-source-mute '@DEFAULT_SOURCE@' toggle
+bindsym XF86MonBrightnessDown exec --no-startup-id workstation-client brightness dec
-bindsym KP_Enter   exec --no-startup-id pactl set-source-mute '@DEFAULT_SOURCE@' toggle
+
+bindsym $mod+m     exec --no-startup-id workstation-client pulseaudio input toggle
+bindsym $mod+space exec --no-startup-id workstation-client pulseaudio input toggle
+bindsym KP_Enter   exec --no-startup-id workstation-client pulseaudio input toggle
 
 ##############################################################################
 ### BARS #######################################################################

i3/i3status-rust/config.toml.j2

@@ -33,7 +33,7 @@ format = " $icon{ $volume.eng(w:2)|} "
 
 [[block.click]]
 button = "left"
-cmd = "pactl set-sink-mute '@DEFAULT_SINK@' toggle"
+cmd = "workstation-client pulseaudio output toggle"
 update = true
 
 [[block]]
@@ -50,7 +50,7 @@ idle_bg = { link = "warning_bg" }
 
 [[block.click]]
 button = "left"
-cmd = "pactl set-source-mute '@DEFAULT_SOURCE@' toggle"
+cmd = "workstation-client pulseaudio input toggle"
 update = true
 
 [[block]]
@@ -67,31 +67,32 @@ missing_format = ""
 [[block]]
 block = "toggle"
 format = "   $icon "
-command_on = "$XDG_CONFIG_HOME/i3/scripts/presentation-mode toggle ; pkill -SIGRTMIN+0 i3status-rs"
+signal = 1
-command_off = "$XDG_CONFIG_HOME/i3/scripts/presentation-mode toggle ; pkill -SIGRTMIN+0 i3status-rs"
+command_on = "workstation-client present toggle ; pkill -SIGRTMIN+1 i3status-rs"
-command_state = "[[ $($XDG_CONFIG_HOME/i3/scripts/presentation-mode status) == on ]] && echo active"
+command_off = "workstation-client present toggle ; pkill -SIGRTMIN+1 i3status-rs"
+command_state = "[[ $(workstation-client present status) == on ]] && echo active"
 
 [[block]]
 block = "toggle"
 format = "   $icon "
-command_on = "systemctl --user start color-theme-light"
+command_on = "workstation-client theme light"
-command_off = "systemctl --user start color-theme-dark"
+command_off = "workstation-client theme dark"
-command_state = "[[ $(systemctl --user is-active color-theme-light) == active ]] && echo active"
+command_state = "[[ $(workstation-client theme status) == light ]] && echo 1"
 
 [[block]]
 block = "toggle"
 format = "   $icon "
-command_on = "systemctl --user start redshift"
+command_on = "workstation-client redshift start"
-command_off = "systemctl --user stop redshift"
+command_off = "workstation-client redshift stop"
-command_state = "[[ $(systemctl --user is-active redshift) == active ]] && echo active"
+command_state = "[[ $(workstation-client redshift status) == active ]] && echo 1"
 signal = 0
 
 [[block]]
 block = "toggle"
 format = "   $icon "
-command_on = "systemctl --user start spotify"
+command_on = "workstation-client spotify start"
-command_off = "systemctl --user stop spotify"
+command_off = "workstation-client spotify stop"
-command_state = "[[ $(systemctl --user is-active spotify) == active ]] && echo active"
+command_state = "[[ $(workstation-client spotify status) == active ]] && echo 1"
 signal = 0
 
 [[block]]
@@ -101,8 +102,9 @@ command = "ping -n -q -w 2 -c 1 8.8.8.8 >/dev/null 2>/dev/null && printf '{\"tex
 
 [[block]]
 block = "custom"
-command = "curl -s 'https://wttr.in/Ansbach?m&T&format=%c%t' | sed 's/  / /g'"
+command = "workstation-client weather get"
-interval = 3600
+# caching is handled by the workstation daemon
+interval = 60
 
 [[block]]
 block = "time"

i3/scripts/appmenu

@@ -1,2 +0,0 @@
-#!/usr/bin/env bash
-rofi -show combi -combi-modi run -display-combi "run"

i3/scripts/i3exit

@@ -1,84 +0,0 @@
-#!/bin/bash
-
-### From http://www.archlinux.org/index.php/i3
-
-_logfile="$XDG_RUNTIME_DIR/i3exit.log"
-
-touch "$_logfile"
-
-log()
-{
-    echo "$*"
-    echo "[$(date +%FT%T)] $*" >> "$_logfile"
-}
-
-lock()
-{
-    set -x
-    playerctl -p spotify pause
-
-    i3lock --nofork --show-failed-attempts --ignore-empty-password \
-        --color "000000"
-}
-
-screen_off() {
-    xset dpms force off
-}
-
-reset_screen() {
-    systemctl --user restart dpms.service
-}
-
-lock_and_screen_off() {
-    lock &
-    _pid=$!
-    dunst_paused=$(dunstctl is-paused)
-    [[ "${dunst_paused}" != "true" ]] && dunstctl set-paused true
-    screen_off
-    wait $_pid
-    [[ "${dunst_paused}" != "true" ]] && dunstctl set-paused false
-    reset_screen
-}
-
-signal="$1"
-log "[I] Received signal \"$signal\"."
-
-case "$signal" in
-    lock)
-        log "[I] Locking session."
-        lock_and_screen_off
-        ;;
-    logout)
-        log "[I] Exiting i3."
-        i3-msg exit
-        ;;
-    suspend)
-        log "[I] Suspending."
-        lock &
-        sleep 0.1
-        systemctl suspend
-        ;;
-    hibernate)
-        log "[I] Hibernating."
-        sudo systemctl hibernate
-        ;;
-    reboot)
-        log "[I] Rebooting."
-        systemctl reboot
-        ;;
-    shutdown)
-        log "[I] Shutting down."
-        systemctl poweroff
-        ;;
-    screen-off)
-        log "[I] Turning screen off."
-        screen_off
-        ;;
-    *)
-        echo "Usage: $0 {lock|logout|suspend|hibernate|reboot|shutdown}"
-        log "[E] Signal \"$signal\" unknown. Aborting."
-        exit 2
-esac
-
-log "[I] Done."
-exit 0

i3/scripts/presentation-mode

@@ -1,47 +0,0 @@
-#!/usr/bin/env bash
-
-_status_file="${XDG_RUNTIME_DIR}/presentation-mode-on"
-
-is_on() {
-    [[ -e "${_status_file}" ]]
-}
-
-switch_on() {
-    touch "${_status_file}"
-    dunstctl set-paused true &
-    systemctl --user --no-block stop redshift.service
-    systemctl --user --no-block stop spotify.service
-}
-
-switch_off() {
-    rm -f "${_status_file}"
-    dunstctl set-paused false &
-    systemctl --user --no-block start redshift.service
-    systemctl --user --no-block start spotify.service
-}
-
-
-case "$1" in
-    status)
-        if is_on ; then
-            printf "on\n"
-        else
-            printf "off\n"
-        fi
-        ;;
-    toggle)
-        if is_on ; then
-            switch_off
-        else
-            switch_on
-        fi
-        ;;
-    off)
-        switch_off
-        ;;
-    on)
-        switch_on
-        ;;
-esac
-
-

i3/scripts/shutdown-menu

@@ -1,19 +0,0 @@
-#!/usr/bin/env bash
-
-options=(
-"lock"
-"logout"
-"suspend"
-"hibernate"
-"reboot"
-"shutdown"
-"screen-off")
-
-i=1
-output=$(
-for option in "${options[@]}"; do
-    echo "($i) $option"
-    (( i++ ))
-done | rofi -dmenu -p "action" -no-custom)
-
-[[ "$output" ]] && "$(dirname "$0")"/i3exit "${output#(*) }"

mgr/.gitignore

@@ -0,0 +1 @@
+/target

mgr/Cargo.lock

@@ -0,0 +1,503 @@
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+# It is not intended for manual editing.
+version = 4
+
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+
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+
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+name = "cc"
+version = "1.2.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "590f9024a68a8c40351881787f1934dc11afd69090f5edb6831464694d836ea3"
+dependencies = [
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40868e7c1d2f0b8d73e4a8c7f0ff63af4f6d19be117e90bd73eb1d62cf831c6b"
+
+[[package]]
+name = "time-macros"
+version = "0.2.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30cfb0125f12d9c277f35663a0a33f8c30190f4e4574868a330595412d34ebf3"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
+dependencies = [
+ "pin-project-lite",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2054a14f5307d601f88daf0553e1cbf472acc4f2c51afab632431cdcd72124d5"
+dependencies = [
+ "sharded-slab",
+ "thread_local",
+ "tracing-core",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
+
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
+[[package]]
+name = "ureq"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00432f493971db5d8e47a65aeb3b02f8226b9b11f1450ff86bb772776ebadd70"
+dependencies = [
+ "base64",
+ "log",
+ "percent-encoding",
+ "rustls",
+ "rustls-pemfile",
+ "rustls-pki-types",
+ "ureq-proto",
+ "utf-8",
+ "webpki-roots",
+]
+
+[[package]]
+name = "ureq-proto"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbe120bb823a0061680e66e9075942fcdba06d46551548c2c259766b9558bc9a"
+dependencies = [
+ "base64",
+ "http",
+ "httparse",
+ "log",
+]
+
+[[package]]
+name = "utf-8"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "webpki-roots"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e8983c3ab33d6fb807cfcdad2491c4ea8cbc8ed839181c7dfd9c67c83e261b2"
+dependencies = [
+ "rustls-pki-types",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"

mgr/Cargo.toml

@@ -0,0 +1,184 @@
+[package]
+name = "mgr"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+thiserror = { version = "2.0.16", default-features = false }
+time = { version = "0.3.43", default-features = false, features = ["formatting", "parsing", "std"] }
+tracing = { version = "0.1.41", default-features = false }
+tracing-subscriber = { version = "0.3.20", default-features = false, features = ["fmt"] }
+ureq = { version = "3.1.0", default-features = false, features = ["rustls"] }
+
+[[bin]]
+name = "workstation-mgr"
+path = "src/bin/main.rs"
+
+[[bin]]
+name = "workstation-client"
+path = "src/bin/client.rs"
+
+[profile.release]
+strip = true
+lto = true
+codegen-units = 1
+panic = "abort"
+
+[lints.clippy]
+# enabled groups
+correctness = { level = "deny", priority = -1 }
+suspicious = { level = "warn", priority = -1 }
+style = { level = "warn", priority = -1 }
+complexity = { level = "warn", priority = -1 }
+perf = { level = "warn", priority = -1 }
+cargo = { level = "warn", priority = -1 }
+pedantic = { level = "warn", priority = -1 }
+nursery = { level = "warn", priority = -1 }
+
+# pedantic overrides
+too_many_lines = "allow"
+must_use_candidate = "allow"
+map_unwrap_or = "allow"
+missing_errors_doc = "allow"
+if_not_else = "allow"
+similar_names = "allow"
+redundant_else = "allow"
+
+# nursery overrides
+missing_const_for_fn = "allow"
+option_if_let_else = "allow"
+redundant_pub_crate = "allow"
+
+# complexity overrides
+too_many_arguments = "allow"
+
+# style overrides
+new_without_default = "allow"
+redundant_closure = "allow"
+
+# cargo overrides
+multiple_crate_versions = "allow"
+cargo_common_metadata = "allow"
+
+# selected restrictions
+allow_attributes = "warn"
+allow_attributes_without_reason = "warn"
+arithmetic_side_effects = "warn"
+as_conversions = "warn"
+assertions_on_result_states = "warn"
+cfg_not_test = "warn"
+clone_on_ref_ptr = "warn"
+create_dir = "warn"
+dbg_macro = "warn"
+decimal_literal_representation = "warn"
+default_numeric_fallback = "warn"
+deref_by_slicing = "warn"
+disallowed_script_idents = "warn"
+empty_drop = "warn"
+empty_enum_variants_with_brackets = "warn"
+empty_structs_with_brackets = "warn"
+exit = "warn"
+filetype_is_file = "warn"
+float_arithmetic = "warn"
+float_cmp_const = "warn"
+fn_to_numeric_cast_any = "warn"
+format_push_string = "warn"
+get_unwrap = "warn"
+indexing_slicing = "warn"
+infinite_loop = "warn"
+inline_asm_x86_att_syntax = "warn"
+inline_asm_x86_intel_syntax = "warn"
+integer_division = "warn"
+iter_over_hash_type = "warn"
+large_include_file = "warn"
+let_underscore_must_use = "warn"
+let_underscore_untyped = "warn"
+little_endian_bytes = "warn"
+lossy_float_literal = "warn"
+map_err_ignore = "warn"
+mem_forget = "warn"
+missing_assert_message = "warn"
+missing_asserts_for_indexing = "warn"
+mixed_read_write_in_expression = "warn"
+modulo_arithmetic = "warn"
+multiple_inherent_impl = "warn"
+multiple_unsafe_ops_per_block = "warn"
+mutex_atomic = "warn"
+panic = "warn"
+partial_pub_fields = "warn"
+pattern_type_mismatch = "warn"
+print_stderr = "warn"
+print_stdout = "warn"
+pub_without_shorthand = "warn"
+rc_buffer = "warn"
+rc_mutex = "warn"
+redundant_type_annotations = "warn"
+renamed_function_params = "warn"
+rest_pat_in_fully_bound_structs = "warn"
+same_name_method = "warn"
+self_named_module_files = "warn"
+semicolon_inside_block = "warn"
+str_to_string = "warn"
+string_add = "warn"
+string_lit_chars_any = "warn"
+string_slice = "warn"
+implicit_clone = "warn"
+suspicious_xor_used_as_pow = "warn"
+tests_outside_test_module = "warn"
+todo = "warn"
+try_err = "warn"
+undocumented_unsafe_blocks = "warn"
+unimplemented = "warn"
+unnecessary_safety_comment = "warn"
+unnecessary_safety_doc = "warn"
+unnecessary_self_imports = "warn"
+unneeded_field_pattern = "warn"
+unseparated_literal_suffix = "warn"
+unused_result_ok = "warn"
+unwrap_used = "warn"
+use_debug = "warn"
+verbose_file_reads = "warn"
+
+# restrictions explicit allows
+absolute_paths = "allow"
+alloc_instead_of_core = "allow"
+as_underscore = "allow"
+big_endian_bytes = "allow"
+default_union_representation = "allow"
+error_impl_error = "allow"
+exhaustive_enums = "allow"
+exhaustive_structs = "allow"
+expect_used = "allow"
+field_scoped_visibility_modifiers = "allow"
+host_endian_bytes = "allow"
+if_then_some_else_none = "allow"
+impl_trait_in_params = "allow"
+implicit_return = "allow"
+integer_division_remainder_used = "allow"
+min_ident_chars = "allow"
+missing_docs_in_private_items = "allow"
+missing_inline_in_public_items = "allow"
+missing_trait_methods = "allow"
+mod_module_files = "allow"
+needless_raw_strings = "allow"
+non_ascii_literal = "allow"
+non_zero_suggestions = "allow"
+panic_in_result_fn = "allow"
+pathbuf_init_then_push = "allow"
+pub_use = "allow"
+pub_with_shorthand = "allow"
+question_mark_used = "allow"
+ref_patterns = "allow"
+semicolon_outside_block = "allow"
+separated_literal_suffix = "allow"
+shadow_reuse = "allow"
+shadow_same = "allow"
+shadow_unrelated = "allow"
+single_call_fn = "allow"
+single_char_lifetime_names = "allow"
+std_instead_of_alloc = "allow"
+std_instead_of_core = "allow"
+unreachable = "allow"
+unused_trait_names = "allow"
+unwrap_in_result = "allow"
+wildcard_enum_match_arm = "allow"

mgr/src/bin/client.rs

@@ -0,0 +1,87 @@
+#![expect(
+    clippy::print_stderr,
+    clippy::print_stdout,
+    reason = "output is fine for cli"
+)]
+
+use std::{
+    env,
+    io::{self, Read as _},
+    net,
+    os::unix::net::UnixStream,
+    process, str,
+};
+
+use thiserror::Error;
+
+use mgr::{
+    Action,
+    cli::{self, CliCommand as _, ParseError},
+    wire::{client, socket},
+};
+
+#[derive(Debug, Error)]
+enum Error {
+    #[error(transparent)]
+    Io(#[from] io::Error),
+    #[error(transparent)]
+    Socket(#[from] socket::Error),
+    #[error(transparent)]
+    Send(#[from] client::SendError),
+    #[error(transparent)]
+    CliParse(#[from] cli::ParseError),
+    #[error("response is not valid utf8: {0}")]
+    ResponseNonUtf8(#[from] str::Utf8Error),
+}
+
+enum MainResult {
+    Success,
+    Failure(Error),
+}
+
+impl process::Termination for MainResult {
+    fn report(self) -> process::ExitCode {
+        match self {
+            Self::Success => process::ExitCode::SUCCESS,
+            Self::Failure(e) => {
+                eprintln!("Error: {e}");
+                process::ExitCode::FAILURE
+            }
+        }
+    }
+}
+
+fn main() -> MainResult {
+    fn inner() -> Result<(), Error> {
+        let mut args = env::args().skip(1);
+
+        let socket = socket::get_socket_path()?;
+        let mut stream = UnixStream::connect(socket)?;
+
+        let action =
+            Action::parse_str(args.next().ok_or(ParseError::MissingAction)?.as_str(), args)?;
+
+        action.send(&mut stream)?;
+
+        stream.shutdown(net::Shutdown::Write)?;
+
+        let response = {
+            let mut buf = Vec::new();
+            stream.read_to_end(&mut buf)?;
+            let response = str::from_utf8(&buf)?.to_owned();
+            drop(stream);
+            response
+        };
+
+        if !response.is_empty() {
+            println!("{response}");
+        }
+
+        Ok(())
+    }
+
+    match inner() {
+        Ok(()) => MainResult::Success,
+        Err(e) => MainResult::Failure(e),
+    }
+}

mgr/src/bin/main.rs

@@ -0,0 +1,105 @@
+#![expect(
+    clippy::print_stderr,
+    clippy::print_stdout,
+    reason = "output is fine for cli"
+)]
+
+use std::{env, process};
+
+use thiserror::Error;
+use tracing::Level;
+
+use mgr::{
+    self, Action, Exec as _,
+    cli::{CliCommand as _, ParseError},
+};
+
+#[derive(Debug, Error)]
+enum Error {
+    #[error(transparent)]
+    Power(#[from] mgr::power::Error),
+    #[error(transparent)]
+    Dmenu(#[from] mgr::dmenu::Error),
+    #[error(transparent)]
+    Server(#[from] mgr::wire::server::Error),
+    #[error(transparent)]
+    Presentation(#[from] mgr::present::Error),
+    #[error(transparent)]
+    Exec(#[from] mgr::ExecError),
+    #[error(transparent)]
+    ParseParse(#[from] ParseError),
+    #[error(transparent)]
+    Tracing(#[from] tracing::dispatcher::SetGlobalDefaultError),
+}
+
+enum MainResult {
+    Success,
+    Failure(Error),
+}
+
+impl process::Termination for MainResult {
+    fn report(self) -> process::ExitCode {
+        match self {
+            Self::Success => process::ExitCode::SUCCESS,
+            Self::Failure(e) => {
+                eprintln!("Error: {e}");
+                process::ExitCode::FAILURE
+            }
+        }
+    }
+}
+
+impl From<Error> for MainResult {
+    fn from(value: Error) -> Self {
+        Self::Failure(value)
+    }
+}
+
+fn init_tracing() -> Result<(), Error> {
+    tracing::subscriber::set_global_default(
+        tracing_subscriber::fmt()
+            .with_max_level(Level::DEBUG)
+            .event_format(
+                tracing_subscriber::fmt::format()
+                    .with_ansi(false)
+                    .with_target(false)
+                    .compact(),
+            )
+            .finish(),
+    )?;
+    Ok(())
+}
+
+fn main() -> MainResult {
+    fn inner() -> Result<(), Error> {
+        init_tracing()?;
+
+        let mut args = env::args().skip(1);
+
+        match args.next().ok_or(ParseError::MissingAction)?.as_str() {
+            "serve" => {
+                mgr::wire::server::run()?;
+                Ok(())
+            }
+            "run" => {
+                let action = Action::parse_str(
+                    args.next().ok_or(ParseError::MissingAction)?.as_str(),
+                    args,
+                )?;
+                if let Some(output) = action.execute()? {
+                    println!("{output}");
+                }
+                Ok(())
+            }
+            input => Err(ParseError::UnknownAction {
+                action: input.to_owned(),
+            }
+            .into()),
+        }
+    }
+
+    match inner() {
+        Ok(()) => MainResult::Success,
+        Err(e) => MainResult::Failure(e),
+    }
+}

mgr/src/brightness.rs

@@ -0,0 +1,77 @@
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Inc,
+    Dec,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Inc),
+            0x02 => Ok(Self::Dec),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Inc => vec![0x01],
+            Self::Dec => vec![0x02],
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "inc" => Self::Inc,
+            "dec" => Self::Dec,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Inc => cmd::command("brightnessctl", &["set", "8%+"])?,
+            Self::Dec => cmd::command("brightnessctl", &["set", "8%-"])?,
+        }
+        Ok(None)
+    }
+}

mgr/src/cli.rs

@@ -0,0 +1,19 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum ParseError {
+    #[error("no action given")]
+    MissingAction,
+    #[error("unknown action: {action}")]
+    UnknownAction { action: String },
+    #[error("unexpected input: {rest:?}")]
+    UnexpectedInput { rest: Vec<String> },
+}
+
+pub trait CliCommand {
+    type ExecErr: From<ParseError>;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, ParseError>
+    where
+        Self: Sized;
+}

mgr/src/cmd.rs

@@ -0,0 +1,183 @@
+use std::{io, panic, process, str, thread};
+
+use thiserror::Error;
+use tracing::{Level, event};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("command \"{command}\" failed: {error}")]
+    CommandInvocation {
+        command: &'static str,
+        error: io::Error,
+    },
+    #[error("command \"{command}\" was terminated by signal")]
+    CommandTerminatedBySignal { command: &'static str },
+    #[error(
+        "command \"{command}\" failed [{code}]: {stderr}",
+        code = match *.code {
+            Some(code) => &.code.to_string(),
+            _ => "unknown exit code",
+        },
+        stderr = if .stderr.is_empty() {
+            "[stderr empty]"
+        } else {
+            .stderr
+    })]
+    CommandFailed {
+        command: &'static str,
+        code: Option<i32>,
+        stderr: String,
+    },
+    #[error("{command} produced non-utf8 output: {error}")]
+    CommandOutputNonUtf8 {
+        command: &'static str,
+        error: str::Utf8Error,
+    },
+    #[error("failed writing to stdin of command \"{command}\": {error}")]
+    StdinWriteFailed {
+        command: &'static str,
+        error: io::Error,
+    },
+}
+
+pub(crate) fn command(command: &'static str, args: &[&str]) -> Result<(), Error> {
+    let _: FinishedProcess = run_command_checked(command, args)?;
+    Ok(())
+}
+
+pub(crate) fn run_command(command: &'static str, args: &[&str]) -> Result<FinishedProcess, Error> {
+    event!(Level::DEBUG, "running {command} {args:?}");
+    let proc = process::Command::new(command)
+        .args(args)
+        .output()
+        .map_err(|error| Error::CommandInvocation { command, error })?;
+
+    Ok(FinishedProcess {
+        exit_code: proc
+            .status
+            .code()
+            .ok_or(Error::CommandTerminatedBySignal { command })?,
+        stdout: str::from_utf8(&proc.stdout)
+            .map_err(|error| Error::CommandOutputNonUtf8 { command, error })?
+            .to_owned(),
+        stderr: str::from_utf8(&proc.stderr)
+            .map_err(|error| Error::CommandOutputNonUtf8 { command, error })?
+            .to_owned(),
+    })
+}
+
+pub(crate) fn run_command_checked(
+    command: &'static str,
+    args: &[&str],
+) -> Result<FinishedProcess, Error> {
+    let output = run_command(command, args)?;
+
+    if output.exit_code != 0_i32 {
+        event!(Level::DEBUG, "{command} {args:?} failed");
+        return Err(Error::CommandFailed {
+            command,
+            code: Some(output.exit_code),
+            stderr: output.stderr,
+        });
+    }
+
+    Ok(output)
+}
+
+pub(crate) fn command_output(command: &'static str, args: &[&str]) -> Result<String, Error> {
+    let output = run_command_checked(command, args)?;
+    Ok(output.stdout)
+}
+
+#[derive(Debug)]
+pub(crate) struct FinishedProcess {
+    pub exit_code: i32,
+    pub stdout: String,
+    pub stderr: String,
+}
+
+pub(crate) fn command_output_with_stdin_write(
+    command: &'static str,
+    args: &[&str],
+    input: &[u8],
+) -> Result<FinishedProcess, Error> {
+    use io::Write as _;
+
+    let process = process::Command::new(command)
+        .args(args)
+        .stdin(process::Stdio::piped())
+        .stdout(process::Stdio::piped())
+        .stderr(process::Stdio::null())
+        .spawn()
+        .map_err(|error| Error::CommandInvocation { command, error })?;
+
+    let mut stdin = process
+        .stdin
+        .as_ref()
+        .expect("stdin handle must be present");
+
+    stdin
+        .write_all(input)
+        .map_err(|error| Error::StdinWriteFailed { command, error })?;
+
+    let output = process
+        .wait_with_output()
+        .map_err(|error| Error::CommandInvocation { command, error })?;
+
+    let exit_code = output
+        .status
+        .code()
+        .ok_or(Error::CommandTerminatedBySignal { command })?;
+
+    let stdout = str::from_utf8(&output.stdout)
+        .map_err(|error| Error::CommandOutputNonUtf8 { command, error })?
+        .to_owned();
+
+    let stderr = str::from_utf8(&output.stderr)
+        .map_err(|error| Error::CommandOutputNonUtf8 { command, error })?
+        .to_owned();
+
+    Ok(FinishedProcess {
+        exit_code,
+        stdout,
+        stderr,
+    })
+}
+
+pub(crate) struct RunningProcess {
+    command: &'static str,
+    join_handle: thread::JoinHandle<Result<FinishedProcess, Error>>,
+}
+
+impl RunningProcess {
+    pub fn with<F: Fn() -> Result<(), E>, E: From<Error>>(
+        self,
+        f: F,
+    ) -> Result<FinishedProcess, E> {
+        f()?;
+        event!(
+            Level::DEBUG,
+            "waiting for process {} to finish",
+            self.command
+        );
+        let ret = match self.join_handle.join() {
+            Ok(ret) => ret?,
+            Err(e) => panic::resume_unwind(e),
+        };
+        event!(Level::DEBUG, "process {} finished", self.command);
+        Ok(ret)
+    }
+}
+
+pub(crate) fn start_command(
+    command: &'static str,
+    args: &'static [&'static str],
+) -> RunningProcess {
+    event!(Level::DEBUG, "starting {command} {args:?}");
+    let join_handle = thread::spawn(move || run_command_checked(command, args));
+
+    RunningProcess {
+        command,
+        join_handle,
+    }
+}

mgr/src/dirs.rs

@@ -0,0 +1,29 @@
+use std::path::PathBuf;
+
+use thiserror::Error;
+
+use super::env;
+
+const ENV_XDG_RUNTIME_DIR: &str = "XDG_RUNTIME_DIR";
+const ENV_XDG_CACHE_DIR: &str = "XDG_CACHE_HOME";
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error(transparent)]
+    Env(#[from] env::Error),
+}
+
+pub(crate) fn xdg_runtime_dir() -> Result<Option<PathBuf>, Error> {
+    Ok(env::get(ENV_XDG_RUNTIME_DIR)?.map(PathBuf::from))
+}
+
+pub(crate) fn require_xdg_runtime_dir() -> Result<PathBuf, Error> {
+    Ok(PathBuf::from(env::require(ENV_XDG_RUNTIME_DIR)?))
+}
+
+pub(crate) fn xdg_cache_dir() -> Result<PathBuf, Error> {
+    Ok(match env::get(ENV_XDG_CACHE_DIR)? {
+        Some(value) => PathBuf::from(value),
+        None => PathBuf::from(env::require("HOME")?).join(".cache"),
+    })
+}

mgr/src/dmenu.rs

@@ -0,0 +1,66 @@
+use std::{fmt::Write as _, num};
+
+use thiserror::Error;
+use tracing::{Level, event};
+
+use super::cmd;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("rofi did not return an integer: {error}")]
+    RofiNonIntOutput { error: num::ParseIntError },
+    #[error("rofi returned an invalid indexx: {index}")]
+    RofiInvalidIndex { index: usize },
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+}
+
+pub(crate) fn get_choice(actions: &[&'static str]) -> Result<Option<&'static str>, Error> {
+    const ROFI: &str = "rofi";
+
+    event!(Level::DEBUG, "starting rofi");
+
+    let process = cmd::command_output_with_stdin_write(
+        ROFI,
+        &[
+            "-dmenu",
+            "-p",
+            "action",
+            "-l",
+            &actions.len().to_string(),
+            "-no-custom",
+            "-sync",
+            "-format",
+            "i",
+        ],
+        actions
+            .iter()
+            .enumerate()
+            .fold(String::new(), |mut output, (i, action)| {
+                writeln!(
+                    output,
+                    "({i}) {action}",
+                    i = i.checked_add(1).expect("too many action")
+                )
+                .expect("writing to string cannot fail");
+                output
+            })
+            .as_bytes(),
+    )?;
+
+    if process.exit_code == 1 {
+        Ok(None)
+    } else {
+        let choice = process
+            .stdout
+            .trim()
+            .parse::<usize>()
+            .map_err(|error| Error::RofiNonIntOutput { error })?;
+
+        Ok(Some(
+            actions
+                .get(choice)
+                .ok_or(Error::RofiInvalidIndex { index: choice })?,
+        ))
+    }
+}

mgr/src/dunst.rs

@@ -0,0 +1,40 @@
+use thiserror::Error;
+
+use super::cmd;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error("dunstctl is-paused returned unknown output: {output}")]
+    DunstctlIsPausedUnknownOutput { output: String },
+}
+
+#[derive(Clone, Copy)]
+pub(crate) enum Status {
+    Paused,
+    Unpaused,
+}
+
+pub(crate) fn set_status(status: Status) -> Result<(), Error> {
+    Ok(cmd::command(
+        "dunstctl",
+        &[
+            "set-paused",
+            match status {
+                Status::Paused => "true",
+                Status::Unpaused => "false",
+            },
+        ],
+    )?)
+}
+
+pub(crate) fn is_paused() -> Result<bool, Error> {
+    let output = cmd::command_output("dunstctl", &["is-paused"])?;
+
+    match output.trim() {
+        "true" => Ok(true),
+        "false" => Ok(false),
+        _ => Err(Error::DunstctlIsPausedUnknownOutput { output }),
+    }
+}

mgr/src/env.rs

@@ -0,0 +1,28 @@
+use std::{env, ffi::OsString};
+
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error(
+        "env variable \"{name}\" is not valid unicode: \"{value}\"",
+        value = value.to_string_lossy()
+    )]
+    EnvNotUnicode { name: &'static str, value: OsString },
+    #[error("env variable \"{name}\" not found")]
+    EnvNotFound { name: &'static str },
+}
+
+pub(crate) fn get(var: &'static str) -> Result<Option<String>, Error> {
+    match env::var(var) {
+        Ok(value) => Ok(Some(value)),
+        Err(e) => match e {
+            env::VarError::NotPresent => Ok(None),
+            env::VarError::NotUnicode(value) => Err(Error::EnvNotUnicode { name: var, value }),
+        },
+    }
+}
+
+pub(crate) fn require(var: &'static str) -> Result<String, Error> {
+    get(var)?.ok_or(Error::EnvNotFound { name: var })
+}

mgr/src/lib.rs

@@ -0,0 +1,190 @@
+use thiserror::Error;
+
+pub(crate) mod brightness;
+pub mod cli;
+pub(crate) mod cmd;
+pub(crate) mod dirs;
+pub mod dmenu;
+pub(crate) mod dunst;
+pub(crate) mod env;
+pub mod power;
+pub mod present;
+pub(crate) mod pulseaudio;
+pub(crate) mod redshift;
+pub(crate) mod spotify;
+pub(crate) mod systemd;
+pub(crate) mod theme;
+pub(crate) mod weather;
+pub mod wire;
+
+#[derive(Debug, Error)]
+pub enum ExecError {
+    #[error(transparent)]
+    Power(#[from] power::Error),
+    #[error(transparent)]
+    Presentation(#[from] present::Error),
+    #[error(transparent)]
+    Pulseaudio(#[from] pulseaudio::Error),
+    #[error(transparent)]
+    Theme(#[from] theme::Error),
+    #[error(transparent)]
+    Spotify(#[from] spotify::Error),
+    #[error(transparent)]
+    Redshift(#[from] redshift::Error),
+    #[error(transparent)]
+    Weather(#[from] weather::Error),
+    #[error(transparent)]
+    Brightness(#[from] brightness::Error),
+    #[error(transparent)]
+    Parse(#[from] cli::ParseError),
+}
+
+#[derive(Debug)]
+pub enum Action {
+    Power(power::Action),
+    Present(present::Action),
+    Pulseaudio(pulseaudio::Action),
+    Theme(theme::Action),
+    Spotify(spotify::Action),
+    Redshift(redshift::Action),
+    Weather(weather::Action),
+    Brightness(brightness::Action),
+}
+
+impl wire::WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, wire::server::ParseError> {
+        match input.next().ok_or(wire::server::ParseError::Eof)? {
+            0x01 => Ok(Self::Power(power::Action::parse_wire(input)?)),
+            0x02 => Ok(Self::Present(present::Action::parse_wire(input)?)),
+            0x03 => Ok(Self::Pulseaudio(pulseaudio::Action::parse_wire(input)?)),
+            0x04 => Ok(Self::Theme(theme::Action::parse_wire(input)?)),
+            0x05 => Ok(Self::Spotify(spotify::Action::parse_wire(input)?)),
+            0x06 => Ok(Self::Redshift(redshift::Action::parse_wire(input)?)),
+            0x07 => Ok(Self::Weather(weather::Action::parse_wire(input)?)),
+            0x08 => Ok(Self::Brightness(brightness::Action::parse_wire(input)?)),
+            other => Err(wire::server::ParseError::Unknown(other)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Power(action) => {
+                let mut v = vec![0x01];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Present(action) => {
+                let mut v = vec![0x02];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Pulseaudio(action) => {
+                let mut v = vec![0x03];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Theme(action) => {
+                let mut v = vec![0x04];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Spotify(action) => {
+                let mut v = vec![0x05];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Redshift(action) => {
+                let mut v = vec![0x06];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Weather(action) => {
+                let mut v = vec![0x07];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+            Self::Brightness(action) => {
+                let mut v = vec![0x08];
+                v.extend_from_slice(&action.to_wire());
+                v
+            }
+        }
+    }
+}
+
+impl cli::CliCommand for Action {
+    type ExecErr = ExecError;
+
+    fn parse_str(
+        input: &str,
+        mut rest: impl Iterator<Item = String>,
+    ) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        match input {
+            "power" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Power(power::Action::parse_str(&choice, rest)?))
+            }
+            "present" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Present(present::Action::parse_str(&choice, rest)?))
+            }
+            "pulseaudio" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Pulseaudio(pulseaudio::Action::parse_str(
+                    &choice, rest,
+                )?))
+            }
+            "theme" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Theme(theme::Action::parse_str(&choice, rest)?))
+            }
+            "spotify" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Spotify(spotify::Action::parse_str(&choice, rest)?))
+            }
+            "redshift" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Redshift(redshift::Action::parse_str(&choice, rest)?))
+            }
+            "weather" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Weather(weather::Action::parse_str(&choice, rest)?))
+            }
+            "brightness" => {
+                let choice = rest.next().ok_or(cli::ParseError::MissingAction)?;
+                Ok(Self::Brightness(brightness::Action::parse_str(
+                    &choice, rest,
+                )?))
+            }
+            s => Err(cli::ParseError::UnknownAction {
+                action: s.to_owned(),
+            }),
+        }
+    }
+}
+
+pub trait Exec {
+    type ExecErr: Into<ExecError>;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr>;
+}
+
+impl Exec for Action {
+    type ExecErr = ExecError;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Power(action) => Ok(action.execute()?),
+            Self::Present(action) => Ok(action.execute()?),
+            Self::Pulseaudio(action) => Ok(action.execute()?),
+            Self::Theme(action) => Ok(action.execute()?),
+            Self::Spotify(action) => Ok(action.execute()?),
+            Self::Redshift(action) => Ok(action.execute()?),
+            Self::Weather(action) => Ok(action.execute()?),
+            Self::Brightness(action) => Ok(action.execute()?),
+        }
+    }
+}

mgr/src/power.rs

@@ -0,0 +1,223 @@
+use thiserror::Error;
+use tracing::{Level, event};
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, dmenu, dunst, spotify,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Dunst(#[from] dunst::Error),
+    #[error("unknown action: {action}")]
+    UnknownAction { action: String },
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Dmenu(#[from] dmenu::Error),
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Spotify(#[from] spotify::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Menu,
+    Lock,
+    Suspend,
+    Hibernate,
+    Reboot,
+    Poweroff,
+}
+
+impl Action {
+    fn as_str(self) -> &'static str {
+        match self {
+            Self::Menu => "menu",
+            Self::Lock => "lock",
+            Self::Suspend => "suspend",
+            Self::Hibernate => "hibernate",
+            Self::Reboot => "reboot",
+            Self::Poweroff => "poweroff",
+        }
+    }
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Menu),
+            0x02 => Ok(Self::Lock),
+            0x03 => Ok(Self::Suspend),
+            0x04 => Ok(Self::Hibernate),
+            0x05 => Ok(Self::Reboot),
+            0x06 => Ok(Self::Poweroff),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Menu => vec![0x01],
+            Self::Lock => vec![0x02],
+            Self::Suspend => vec![0x03],
+            Self::Hibernate => vec![0x04],
+            Self::Reboot => vec![0x05],
+            Self::Poweroff => vec![0x06],
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Menu => menu()?,
+            Self::Lock => lock_and_screen_off()?,
+            Self::Suspend => lock_and_suspend()?,
+            Self::Hibernate => hibernate()?,
+            Self::Reboot => reboot()?,
+            Self::Poweroff => poweroff()?,
+        }
+        Ok(None)
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "menu" => Self::Menu,
+            "lock" => Self::Lock,
+            "suspend" => Self::Suspend,
+            "hibernate" => Self::Hibernate,
+            "reboot" => Self::Reboot,
+            "shutdown" => Self::Poweroff,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+const MENU_ACTIONS: &[Action] = &[
+    Action::Lock,
+    Action::Suspend,
+    Action::Hibernate,
+    Action::Reboot,
+    Action::Poweroff,
+];
+
+fn menu() -> Result<(), Error> {
+    let choice = dmenu::get_choice(
+        &MENU_ACTIONS
+            .iter()
+            .map(|action| action.as_str())
+            .collect::<Vec<&str>>(),
+    )?;
+
+    if let Some(choice) = choice {
+        MENU_ACTIONS
+            .iter()
+            .find(|action| action.as_str() == choice)
+            .copied()
+            .expect("choice must be one of the valid values")
+            .execute()?;
+    } else {
+        event!(Level::DEBUG, "rofi was cancelled");
+    }
+
+    Ok(())
+}
+
+fn screen_off() -> Result<(), Error> {
+    Ok(cmd::command("xset", &["dpms", "force", "off"])?)
+}
+
+fn lock() -> Result<cmd::RunningProcess, Error> {
+    spotify::pause()?;
+
+    let lock_handle = cmd::start_command(
+        "i3lock",
+        &[
+            "--nofork",
+            "--show-failed-attempts",
+            "--ignore-empty-password",
+            "--color",
+            "000000",
+        ],
+    );
+
+    Ok(lock_handle)
+}
+
+fn reset_screen() -> Result<(), Error> {
+    Ok(cmd::command(
+        "systemctl",
+        &["--user", "restart", "dpms.service"],
+    )?)
+}
+
+fn lock_and_screen_off() -> Result<(), Error> {
+    let dunst_paused = dunst::is_paused()?;
+    if dunst_paused {
+        dunst::set_status(dunst::Status::Paused)?;
+    }
+
+    lock()?.with(|| -> Result<(), Error> {
+        screen_off()?;
+        Ok(())
+    })?;
+
+    if dunst_paused {
+        dunst::set_status(dunst::Status::Unpaused)?;
+    }
+
+    reset_screen()?;
+
+    Ok(())
+}
+
+fn suspend() -> Result<(), Error> {
+    Ok(cmd::command("systemctl", &["suspend"])?)
+}
+
+fn hibernate() -> Result<(), Error> {
+    Ok(cmd::command("systemctl", &["hibernate"])?)
+}
+
+fn reboot() -> Result<(), Error> {
+    Ok(cmd::command("systemctl", &["reboot"])?)
+}
+
+fn poweroff() -> Result<(), Error> {
+    Ok(cmd::command("systemctl", &["poweroff"])?)
+}
+
+fn lock_and_suspend() -> Result<(), Error> {
+    lock()?.with(|| -> Result<(), Error> {
+        screen_off()?;
+        suspend()?;
+        Ok(())
+    })?;
+
+    Ok(())
+}

mgr/src/present.rs

@@ -0,0 +1,154 @@
+use std::{fs, io, path::PathBuf};
+
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, dirs, dunst, redshift, spotify,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Io(#[from] io::Error),
+    #[error("unknown action: {action}")]
+    UnknownAction { action: String },
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Dirs(#[from] dirs::Error),
+    #[error(transparent)]
+    Dunst(#[from] dunst::Error),
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Redshift(#[from] redshift::Error),
+    #[error(transparent)]
+    Spotify(#[from] spotify::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    On,
+    Off,
+    Toggle,
+    Status,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::On),
+            0x02 => Ok(Self::Off),
+            0x03 => Ok(Self::Toggle),
+            0x04 => Ok(Self::Status),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::On => vec![0x01],
+            Self::Off => vec![0x02],
+            Self::Toggle => vec![0x03],
+            Self::Status => vec![0x04],
+        }
+    }
+}
+
+fn status_file() -> Result<PathBuf, Error> {
+    Ok(dirs::require_xdg_runtime_dir()?.join("presentation-mode-on"))
+}
+
+#[derive(Debug, Clone, Copy)]
+enum Status {
+    On,
+    Off,
+}
+
+fn status() -> Result<Status, Error> {
+    Ok(if status_file()?.exists() {
+        Status::On
+    } else {
+        Status::Off
+    })
+}
+
+fn on() -> Result<(), Error> {
+    drop(fs::File::create(status_file()?)?);
+    dunst::set_status(dunst::Status::Paused)?;
+    redshift::set(redshift::Status::Off)?;
+    spotify::set(spotify::Status::Off)?;
+    Ok(())
+}
+
+fn off() -> Result<(), Error> {
+    fs::remove_file(status_file()?)?;
+    dunst::set_status(dunst::Status::Unpaused)?;
+    redshift::set(redshift::Status::On)?;
+    spotify::set(spotify::Status::On)?;
+    Ok(())
+}
+
+fn toggle() -> Result<(), Error> {
+    match status()? {
+        Status::On => off()?,
+        Status::Off => on()?,
+    }
+    Ok(())
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::On => {
+                on()?;
+                Ok(None)
+            }
+            Self::Off => {
+                off()?;
+                Ok(None)
+            }
+            Self::Toggle => {
+                toggle()?;
+                Ok(None)
+            }
+            Self::Status => Ok(match status()? {
+                Status::On => Some("on".to_owned()),
+                Status::Off => Some("off".to_owned()),
+            }),
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "on" => Self::On,
+            "off" => Self::Off,
+            "toggle" => Self::Toggle,
+            "status" => Self::Status,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}

mgr/src/pulseaudio.rs

@@ -0,0 +1,112 @@
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    InputToggle,
+    OutputToggle,
+    OutputInc,
+    OutputDec,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::InputToggle),
+            0x02 => Ok(Self::OutputToggle),
+            0x03 => Ok(Self::OutputInc),
+            0x04 => Ok(Self::OutputDec),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::InputToggle => vec![0x01],
+            Self::OutputToggle => vec![0x02],
+            Self::OutputInc => vec![0x03],
+            Self::OutputDec => vec![0x04],
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(
+        input: &str,
+        mut rest: impl Iterator<Item = String>,
+    ) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "input" => match rest.next().ok_or(cli::ParseError::MissingAction)?.as_str() {
+                "toggle" => Self::InputToggle,
+                s => {
+                    return Err(cli::ParseError::UnknownAction {
+                        action: s.to_owned(),
+                    });
+                }
+            },
+            "output" => match rest.next().ok_or(cli::ParseError::MissingAction)?.as_str() {
+                "toggle" => Self::OutputToggle,
+                "inc" => Self::OutputInc,
+                "dec" => Self::OutputDec,
+                s => {
+                    return Err(cli::ParseError::UnknownAction {
+                        action: s.to_owned(),
+                    });
+                }
+            },
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::InputToggle => {
+                cmd::command("pactl", &["set-source-mute", "@DEFAULT_SOURCE@", "toggle"])?;
+            }
+            Self::OutputToggle => {
+                cmd::command("pactl", &["set-sink-mute", "@DEFAULT_SINK@", "toggle"])?;
+            }
+            Self::OutputInc => {
+                cmd::command("pactl", &["set-sink-volume", "@DEFAULT_SINK@", "+5%"])?;
+            }
+            Self::OutputDec => {
+                cmd::command("pactl", &["set-sink-volume", "@DEFAULT_SINK@", "-5%"])?;
+            }
+        }
+        Ok(None)
+    }
+}

mgr/src/redshift.rs

@@ -0,0 +1,116 @@
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, systemd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Systemd(#[from] systemd::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Start,
+    Stop,
+    Status,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Start),
+            0x02 => Ok(Self::Stop),
+            0x03 => Ok(Self::Status),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Start => vec![0x01],
+            Self::Stop => vec![0x02],
+            Self::Status => vec![0x03],
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Start => {
+                set(Status::On)?;
+                Ok(None)
+            }
+            Self::Stop => {
+                set(Status::Off)?;
+                Ok(None)
+            }
+            Self::Status => Ok(
+                if systemd::user::unit_status("redshift.service")?.is_active() {
+                    Some("active".to_owned())
+                } else {
+                    Some("inactive".to_owned())
+                },
+            ),
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "start" => Self::Start,
+            "stop" => Self::Stop,
+            "status" => Self::Status,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub(crate) enum Status {
+    On,
+    Off,
+}
+
+pub(crate) fn set(status: Status) -> Result<(), Error> {
+    Ok(cmd::command(
+        "systemctl",
+        &[
+            "--user",
+            "--no-block",
+            match status {
+                Status::On => "start",
+                Status::Off => "stop",
+            },
+            "redshift.service",
+        ],
+    )?)
+}

mgr/src/spotify.rs

@@ -0,0 +1,164 @@
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, systemd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Systemd(#[from] systemd::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Start,
+    Stop,
+    Status,
+    Play,
+    Pause,
+    Toggle,
+    Previous,
+    Next,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Start),
+            0x02 => Ok(Self::Stop),
+            0x03 => Ok(Self::Status),
+            0x04 => Ok(Self::Play),
+            0x05 => Ok(Self::Pause),
+            0x06 => Ok(Self::Toggle),
+            0x07 => Ok(Self::Previous),
+            0x08 => Ok(Self::Next),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Start => vec![0x01],
+            Self::Stop => vec![0x02],
+            Self::Status => vec![0x03],
+            Self::Play => vec![0x04],
+            Self::Pause => vec![0x05],
+            Self::Toggle => vec![0x06],
+            Self::Previous => vec![0x07],
+            Self::Next => vec![0x08],
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Start => {
+                set(Status::On)?;
+                Ok(None)
+            }
+            Self::Stop => {
+                set(Status::Off)?;
+                Ok(None)
+            }
+            Self::Status => Ok(
+                if systemd::user::unit_status("spotify.service")?.is_active() {
+                    Some("active".to_owned())
+                } else {
+                    Some("inactive".to_owned())
+                },
+            ),
+            Self::Play => {
+                playerctl("play")?;
+                Ok(None)
+            }
+            Self::Pause => {
+                playerctl("pause")?;
+                Ok(None)
+            }
+            Self::Toggle => {
+                playerctl("play-pause")?;
+                Ok(None)
+            }
+            Self::Previous => {
+                playerctl("previous")?;
+                Ok(None)
+            }
+            Self::Next => {
+                playerctl("next")?;
+                Ok(None)
+            }
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "start" => Self::Start,
+            "stop" => Self::Stop,
+            "status" => Self::Status,
+            "play" => Self::Play,
+            "pause" => Self::Pause,
+            "toggle" => Self::Toggle,
+            "previous" => Self::Previous,
+            "next" => Self::Next,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub(crate) enum Status {
+    On,
+    Off,
+}
+
+pub(crate) fn set(status: Status) -> Result<(), Error> {
+    Ok(cmd::command(
+        "systemctl",
+        &[
+            "--user",
+            "--no-block",
+            match status {
+                Status::On => "start",
+                Status::Off => "stop",
+            },
+            "spotify.service",
+        ],
+    )?)
+}
+
+fn playerctl(cmd: &str) -> Result<(), Error> {
+    Ok(cmd::command("playerctl", &["-p", "spotify", cmd])?)
+}
+
+pub(crate) fn pause() -> Result<(), Error> {
+    playerctl("pause")
+}

mgr/src/systemd.rs

@@ -0,0 +1,38 @@
+use thiserror::Error;
+
+use super::cmd;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error("unknown status output: \"{output}\"")]
+    UnknownStatusOutput { output: String },
+}
+
+#[derive(Debug, Clone, Copy)]
+pub(crate) enum UnitStatus {
+    Active,
+    Inactive,
+}
+
+impl UnitStatus {
+    pub(crate) fn is_active(self) -> bool {
+        matches!(self, Self::Active)
+    }
+}
+
+pub(crate) mod user {
+    use super::{super::cmd, Error, UnitStatus};
+
+    pub(crate) fn unit_status(unit: &str) -> Result<UnitStatus, Error> {
+        let output = cmd::run_command("systemctl", &["--user", "is-active", unit])?;
+        match output.stdout.as_str().trim() {
+            "active" => Ok(UnitStatus::Active),
+            "inactive" => Ok(UnitStatus::Inactive),
+            other => Err(Error::UnknownStatusOutput {
+                output: other.to_owned(),
+            }),
+        }
+    }
+}

mgr/src/theme.rs

@@ -0,0 +1,101 @@
+use thiserror::Error;
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, systemd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Systemd(#[from] systemd::Error),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Dark = 0x01,
+    Light = 0x02,
+    Status = 0x03,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Dark),
+            0x02 => Ok(Self::Light),
+            0x03 => Ok(Self::Status),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Dark => vec![0x01],
+            Self::Light => vec![0x02],
+            Self::Status => vec![0x03],
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "dark" => Self::Dark,
+            "light" => Self::Light,
+            "status" => Self::Status,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Dark => {
+                cmd::command(
+                    "systemctl",
+                    &["--user", "--no-block", "start", "color-theme-dark.service"],
+                )?;
+                Ok(None)
+            }
+            Self::Light => {
+                cmd::command(
+                    "systemctl",
+                    &["--user", "--no-block", "start", "color-theme-light.service"],
+                )?;
+                Ok(None)
+            }
+            Self::Status => Ok(
+                if systemd::user::unit_status("color-theme-light.service")?.is_active() {
+                    Some("light".to_owned())
+                } else {
+                    Some("dark".to_owned())
+                },
+            ),
+        }
+    }
+}

mgr/src/weather.rs

@@ -0,0 +1,198 @@
+use std::{
+    fs, io,
+    ops::Sub as _,
+    path::{Path, PathBuf},
+};
+
+use thiserror::Error;
+use time::format_description::well_known::Iso8601;
+use tracing::{Level, event};
+
+const CACHE_AGE: time::Duration = time::Duration::hours(1);
+const CACHE_DELIMITER: char = '|';
+
+use super::{
+    Exec,
+    cli::{self, CliCommand},
+    cmd, dirs, systemd,
+    wire::{WireCommand, server},
+};
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    Cmd(#[from] cmd::Error),
+    #[error(transparent)]
+    Cli(#[from] cli::ParseError),
+    #[error(transparent)]
+    Systemd(#[from] systemd::Error),
+    #[error(transparent)]
+    Http(#[from] ureq::Error),
+    #[error(transparent)]
+    Dirs(#[from] dirs::Error),
+    #[error(transparent)]
+    Io(#[from] io::Error),
+    #[error("delimiter not found in cache file")]
+    CacheDelimitedNotFound,
+    #[error("invalid timestamp \"{input}\" in cache file: {error}")]
+    CacheTimestampParse {
+        input: String,
+        error: time::error::Parse,
+    },
+    #[error("cache timestamp ({cache_timestamp}) is from the future (now: {now})")]
+    CacheTimestampOverflow {
+        now: time::UtcDateTime,
+        cache_timestamp: time::UtcDateTime,
+    },
+    #[error("formatting cache timestamp failed: {error}")]
+    CacheTimestampFormat { error: time::error::Format },
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum Action {
+    Get,
+}
+
+impl WireCommand for Action {
+    fn parse_wire(mut input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError> {
+        match input.next().ok_or(server::ParseError::Eof)? {
+            0x01 => Ok(Self::Get),
+            byte => Err(server::ParseError::Unknown(byte)),
+        }
+    }
+
+    fn to_wire(&self) -> Vec<u8> {
+        match *self {
+            Self::Get => vec![0x01],
+        }
+    }
+}
+
+impl Exec for Action {
+    type ExecErr = Error;
+
+    fn execute(&self) -> Result<Option<String>, Self::ExecErr> {
+        match *self {
+            Self::Get => Ok(Some(get()?)),
+        }
+    }
+}
+
+impl CliCommand for Action {
+    type ExecErr = Error;
+
+    fn parse_str(input: &str, rest: impl Iterator<Item = String>) -> Result<Self, cli::ParseError>
+    where
+        Self: Sized,
+    {
+        let result = match input {
+            "get" => Self::Get,
+            s => {
+                return Err(cli::ParseError::UnknownAction {
+                    action: s.to_owned(),
+                });
+            }
+        };
+
+        let rest = rest.collect::<Vec<String>>();
+        if rest.is_empty() {
+            Ok(result)
+        } else {
+            Err(cli::ParseError::UnexpectedInput { rest })
+        }
+    }
+}
+
+#[derive(Debug)]
+struct Cache {
+    timestamp: time::UtcDateTime,
+    value: String,
+}
+
+fn cache_file() -> Result<PathBuf, Error> {
+    Ok(dirs::xdg_cache_dir()?.join("workstation-mgr.wttr.cache"))
+}
+
+fn store_cache(path: &Path, timestamp: &time::UtcDateTime, value: &str) -> Result<(), Error> {
+    event!(Level::DEBUG, "storing in cache: {timestamp} {value}");
+    Ok(fs::write(
+        path,
+        format!(
+            "{timestamp}{CACHE_DELIMITER}{value}",
+            timestamp = timestamp
+                .format(&Iso8601::DEFAULT)
+                .map_err(|error| Error::CacheTimestampFormat { error })?,
+        ),
+    )?)
+}
+
+fn get_cache(path: &Path) -> Result<Option<Cache>, Error> {
+    match fs::read_to_string(path) {
+        Ok(content) => {
+            let (timestamp, value) = content
+                .split_once(CACHE_DELIMITER)
+                .ok_or(Error::CacheDelimitedNotFound)?;
+
+            let cache_timestamp =
+                time::UtcDateTime::parse(timestamp, &Iso8601::DEFAULT).map_err(|error| {
+                    Error::CacheTimestampParse {
+                        input: timestamp.to_owned(),
+                        error,
+                    }
+                })?;
+
+            Ok(Some(Cache {
+                timestamp: cache_timestamp,
+                value: value.to_owned(),
+            }))
+        }
+        Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(e.into()),
+    }
+}
+
+fn request() -> Result<String, Error> {
+    Ok(ureq::get("https://wttr.in/Ansbach?m&T&format=%c%t")
+        .call()?
+        .body_mut()
+        .read_to_string()?)
+}
+
+fn get_and_update_cache(cache_file: &Path, now: &time::UtcDateTime) -> Result<String, Error> {
+    event!(Level::DEBUG, "refreshing cache");
+    let value = request()?;
+    store_cache(cache_file, now, &value)?;
+    Ok(value)
+}
+
+fn get() -> Result<String, Error> {
+    let cache_file = cache_file()?;
+    event!(Level::DEBUG, "using cache file {cache_file:?}");
+
+    let cache = get_cache(&cache_file)?;
+    event!(Level::DEBUG, "read from cache: {cache:?}");
+
+    let now = time::UtcDateTime::now();
+
+    match cache {
+        Some(cache) => {
+            let cache_age = now.sub(cache.timestamp);
+            event!(Level::DEBUG, "cache age: {cache_age}");
+
+            if cache_age.is_negative() {
+                return Err(Error::CacheTimestampOverflow {
+                    now,
+                    cache_timestamp: cache.timestamp,
+                });
+            }
+
+            if cache_age <= CACHE_AGE {
+                event!(Level::DEBUG, "reusing cache");
+                Ok(cache.value)
+            } else {
+                get_and_update_cache(&cache_file, &now)
+            }
+        }
+        None => get_and_update_cache(&cache_file, &now),
+    }
+}

mgr/src/wire/client.rs

@@ -0,0 +1,20 @@
+use std::{
+    io::{self, Write as _},
+    os::unix::net::UnixStream,
+};
+
+use thiserror::Error;
+
+use super::{super::Action, WireCommand as _};
+
+#[derive(Debug, Error)]
+pub enum SendError {
+    #[error(transparent)]
+    Io(#[from] io::Error),
+}
+
+impl Action {
+    pub fn send(&self, stream: &mut UnixStream) -> Result<(), SendError> {
+        Ok(stream.write_all(&self.to_wire())?)
+    }
+}

mgr/src/wire/mod.rs

@@ -0,0 +1,11 @@
+pub mod client;
+pub mod server;
+pub mod socket;
+
+pub(crate) trait WireCommand {
+    fn parse_wire(input: impl Iterator<Item = u8>) -> Result<Self, server::ParseError>
+    where
+        Self: Sized;
+
+    fn to_wire(&self) -> Vec<u8>;
+}

mgr/src/wire/server.rs

@@ -0,0 +1,88 @@
+use std::{
+    io::{self, Read, Write},
+    os::unix::net::{SocketAddr, UnixListener, UnixStream},
+    thread,
+};
+
+use thiserror::Error;
+use tracing::{Level, event};
+
+use super::{
+    super::{Action, Exec as _},
+    WireCommand, socket,
+};
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error(transparent)]
+    Io(#[from] io::Error),
+    #[error(transparent)]
+    Parse(#[from] ParseError),
+    #[error(transparent)]
+    Socket(#[from] socket::Error),
+    #[error(transparent)]
+    Exec(#[from] crate::ExecError),
+}
+
+#[derive(Debug, Error)]
+pub enum ParseError {
+    #[error("received unexpected eof")]
+    Eof,
+    #[error("received unknown byte: {0:#X}")]
+    Unknown(u8),
+    #[error("received surplus input: {0:?}")]
+    Surplus(Vec<u8>),
+}
+
+fn handle_client(stream: &mut UnixStream) -> Result<(), Error> {
+    let input = {
+        let mut buf = Vec::new();
+        stream.read_to_end(&mut buf)?;
+        buf
+    };
+
+    event!(Level::DEBUG, "request data: {input:?}");
+
+    let action = Action::parse_wire(input.into_iter())?;
+
+    event!(Level::DEBUG, "parsed request: {action:?}");
+
+    if let Some(output) = action.execute()? {
+        stream.write_all(output.as_bytes())?;
+    }
+
+    Ok(())
+}
+
+pub fn run() -> Result<(), Error> {
+    event!(Level::DEBUG, "starting server");
+
+    let socket_path = socket::get_socket_path()?;
+
+    socket::try_remove_socket(&socket_path)?;
+
+    let socket_addr = SocketAddr::from_pathname(socket_path)?;
+
+    event!(Level::DEBUG, "socket address {socket_addr:?}");
+
+    let listener = UnixListener::bind_addr(&socket_addr)?;
+
+    for stream in listener.incoming() {
+        let mut stream = stream?;
+        thread::spawn(move || {
+            event!(Level::DEBUG, "received request");
+            let result = handle_client(&mut stream);
+            if let Err(e) = result {
+                let msg = e.to_string();
+                event!(Level::ERROR, "action failed: {msg}");
+                if let Err(e) = stream.write_all(msg.as_bytes()) {
+                    event!(Level::ERROR, "sending \"{msg}\" failed: {e}");
+                }
+            }
+            event!(Level::DEBUG, "closing stream");
+            drop(stream);
+        });
+    }
+
+    unreachable!()
+}

mgr/src/wire/socket.rs

@@ -0,0 +1,35 @@
+use std::{
+    fs, io,
+    path::{Path, PathBuf},
+};
+
+use thiserror::Error;
+
+use super::super::dirs;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("could not find a suitable socket path")]
+    NoSocketPathFound,
+    #[error(transparent)]
+    Io(#[from] io::Error),
+    #[error(transparent)]
+    Dirs(#[from] dirs::Error),
+}
+
+pub fn get_socket_path() -> Result<PathBuf, Error> {
+    if let Some(mut dir) = dirs::xdg_runtime_dir()? {
+        dir.push("workstation-mgr.sock");
+        return Ok(dir);
+    }
+
+    Err(Error::NoSocketPathFound)
+}
+
+pub(crate) fn try_remove_socket(path: &Path) -> Result<(), Error> {
+    match fs::remove_file(path) {
+        Ok(()) => Ok(()),
+        Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(()),
+        Err(e) => Err(e.into()),
+    }
+}

pkgbuilds/workstation-mgr/.gitignore

@@ -0,0 +1,3 @@
+*
+!.gitignore
+!PKGBUILD

pkgbuilds/workstation-mgr/PKGBUILD

@@ -0,0 +1,41 @@
+# Maintainer: Hannes Körber <hannes@hkoerber.de>
+pkgname='workstation-mgr'
+pkgver=3
+pkgrel=1
+pkgdesc=''
+arch=('x86_64')
+depends=('glibc' 'gcc-libs')
+makedepends=('cargo')
+source=()
+sha256sums=()
+
+pkgver() {
+  cd "/var/lib/dotfiles/mgr/"
+  git log --oneline . | wc -l
+}
+
+prepare() {
+  cd "/var/lib/dotfiles/mgr/"
+  export RUSTUP_TOOLCHAIN=stable
+  cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')"
+}
+
+build() {
+  cd "/var/lib/dotfiles/mgr/"
+  export RUSTUP_TOOLCHAIN=stable
+  export CARGO_TARGET_DIR=/var/lib/makepkg/${pkgname}/build/target
+  cargo build --frozen --release
+}
+
+check() {
+  cd "/var/lib/dotfiles/mgr/"
+  export RUSTUP_TOOLCHAIN=stable
+  cargo test --frozen
+}
+
+package() {
+  cd "/var/lib/dotfiles/mgr/"
+  export CARGO_TARGET_DIR=/var/lib/makepkg/${pkgname}/build/target
+  install -Dm0755 -t "$pkgdir/usr/bin/" "${CARGO_TARGET_DIR}/release/${pkgname}"
+  install -Dm0755 -t "$pkgdir/usr/bin/" "${CARGO_TARGET_DIR}/release/workstation-client"
+}

playbook.yml

@@ -210,6 +210,9 @@
 
         - set_fact:
             aur_packages:
+              # local packages:
+              - name: workstation-mgr
+
               - name: portfolio-performance-bin
                 preexec: |
                   #!/usr/bin/env bash
@@ -430,9 +433,7 @@
 
               filename="${PKGDEST%/}/${pkgname}-${version}-${arch}${PKGEXT}"
 
-              needed_build=0
               if [[ ! -e "${filename}" ]] ; then
-                needed_build=1
                 makepkg \
                   --clean \
                   --nosign || exit 1

projector.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-switch_back() {
-    screencfg --setup laptop-only
-}
-trap switch_back EXIT
-
-xrandr --output eDP-1 --off --output DP-1 --auto # --mode 1920x1080
-
-
-printf 'press ENTER or CTRL+C to switch back'
-read -r _

update-aur-pkgs.sh

@@ -1,8 +1,16 @@
 #!/usr/bin/env bash
 
 for pkg in pkgbuilds/* ; do
-    printf "checking %s\n" "${pkg}"
+    if [[ -n "$(builtin cd "${pkg}" && git rev-parse --show-superproject-working-tree)" ]] ; then
+        printf "checking git submodule %s\n" "${pkg}"
         git submodule update --remote "${pkg}"
+    else
+        printf "checking local package %s\n" "${pkg}"
+        (
+            builtin cd "${pkg}" || exit 1
+            makepkg --nodeps --nobuild --noextract
+        )
+    fi
     if git status --porcelain "${pkg}" | grep -q . ; then
         git add "${pkg}"
         git commit -m "aur: Update $(basename "${pkg}")"