93 lines
2.9 KiB
Nix
93 lines
2.9 KiB
Nix
{
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pkgs,
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config,
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lib,
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...
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}:
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with lib;
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let
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calwatcher =
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(pkgs.writeShellApplication {
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name = "calwatcher";
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runtimeInputs = [
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pkgs.inotify-tools
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pkgs.khal
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pkgs.jq
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];
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text = ''
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# in parts ripped from https://git.sr.ht/~whynothugo/dotfiles/tree/3768ec57/item/home/.local/lib/waybar-khal
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render() {
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# Find events starting in two minutes.
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# So if my current event ends in two minutes and another one starts, the
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# widget is already updated with what's upcoming.
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SINCE="$(date -d 'now +2 min' '+%FT%H:%M:%S')"
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UNTIL="1d"
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EVENT="$(
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khal list "$SINCE" "$UNTIL" \
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--day-format 'SKIPME' \
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--format "{start-end-time-style} {title:.31}{repeat-symbol}" |
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grep -v SKIPME | # filter out headers
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grep -v -P '↦|↔ |⇥' | # filter out continuing all day events
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grep -v '^ ' | # exclude full-day events
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head -n 1 # show just the first
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)"
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if [ -z "$EVENT" ]; then
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TEXT=" (nothing upcoming)"
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CLASS="no-event"
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else
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TEXT=" $EVENT"
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CLASS="event"
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fi
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jq --compact-output \
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--null-input \
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--arg text "$TEXT" \
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--arg class "$CLASS" \
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--arg tooltip "$(khal list today 7d --day-format '<span color="#ffead3"><b>{name} {date-long}</b></span>')" \
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'{"text": $text, "class": $class, "tooltip": $tooltip}'
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}
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render # Render once for initial state.
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# In order to make sure events are updated as time passes, this re-renderes
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# every two minutes. That aside, whenever a calendar event changes, we alreays
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# re-render immediately.
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#
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# It would be ideal to determine _when_ the current event ends, and set the
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# timeout accordinly. That would require parsing khal's output a bit more.
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while true; do
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(inotifywait \
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--event modify \
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--event create \
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--event delete \
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--event close_write \
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--event moved_to \
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--event move \
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--monitor \
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--timeout 120 \
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--recursive \
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"$HOME/.calendars" 2> /dev/null) || true | \
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while read -r _; do
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render
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timeout 3 cat || true # debounce for 3s, https://stackoverflow.com/a/69945839
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done
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done
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'';
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})
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+ "/bin/calwatcher";
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in
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lib.mkIf (config.xyno.user-services.khal.enable) {
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xyno.desktop.waybar.config = {
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"custom/cal" = {
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exec = calwatcher;
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restart-interval = 5;
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return-type = "json";
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"on-click" = "${pkgs.foot}/bin/footclient --app-id floating-alacritty ${pkgs.khal}/bin/ikhal";
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};
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modules-right = mkOrder 1999 [ "custom/cal" ]; # left of clock, right of everything else
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};
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}
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