mirror of https://gitlab.com/dabruh/dotfiles.git
155 lines
3.5 KiB
Bash
Executable File
155 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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SCRIPT_NAME="$(basename -- "$0")"
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function usage() {
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echo "Usage: $SCRIPT_NAME [OPTIONS]"
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echo
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echo "Options:"
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echo " -h Display help."
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echo " -e [COUNT] Run forever, every [COUNT] seconds. Disabled (0) by default."
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echo " -l Kill other $SCRIPT_NAME processes. Only allowed if running forever."
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}
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while getopts ":e:c:lh" arg; do
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case $arg in
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e) EVERY=$OPTARG ;;
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c) COMMAND=$OPTARG ;;
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l) AQUIRE_LEADER=true ;;
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h)
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usage
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exit 0
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;;
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:)
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echo "$SCRIPT_NAME: Must supply an argument to -$OPTARG." >&2
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usage
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exit 1
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;;
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?)
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echo "Invalid option: -${OPTARG}."
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echo
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usage
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exit 2
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;;
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esac
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done
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LOOP=false
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EVERY="${EVERY:-0}"
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[[ $EVERY -gt 0 ]] && LOOP=true
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AQUIRE_LEADER="${AQUIRE_LEADER:-false}"
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OUTPUT_FILE="/tmp/$SCRIPT_NAME.status"
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PREV_STATUS=""
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function multiple_instances_running() {
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[[ "$(pgrep -f "$SCRIPT_NAME" | grep -cv "^$$$")" -gt 1 ]] || return 1
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}
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function aquire_leader() {
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echo "Aquiring leadership"
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if ! [[ "$EVERY" -gt 0 ]]; then
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echo "ERROR: -e [COUNT] must be a positive integer for leader aquisition." 1>&2
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exit 11
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fi
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while read -r pid; do
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[[ "$pid" == "$$" ]] && continue
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if ! kill "$pid"; then
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echo "ERROR: Unable to kill $pid." 1>&2
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exit 12
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fi
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done <<<"$(pgrep -f "$SCRIPT_NAME")"
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echo "Leadership aquired."
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}
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function write_status() {
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local status="$1"
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# Don't write if there's no update
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if [[ "$status" != "$PREV_STATUS" ]]; then
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echo "$status" | tee "$OUTPUT_FILE"
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killall -SIGUSR1 i3status
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export PREV_STATUS="$status"
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else
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echo "NOCHG"
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fi
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! $LOOP && exit 0
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sleep "$EVERY"
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}
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function get_field() {
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local row
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row="$(grep "^$1 " <<<"$QUERY_RESULT")"
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echo "${row#"$1 "}"
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}
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function get_status() {
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local tmp status
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tmp="$(get_field status)"
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status="$tmp"
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[ "$tmp" == "playing" ] && status="▶"
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[ "$tmp" == "paused" ] && status="⏸️"
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[ "$tmp" == "stopped" ] && status="⏹️"
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echo $status
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}
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function get_progress() {
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local duration position
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duration="$(get_field duration)"
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position="$(get_field position)"
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if [ -n "$duration" ] && [ -n "$position" ]; then
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echo "$(((position * 100 / duration * 100) / 100))%"
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fi
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}
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function get_artist_title() {
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local tag_artist tag_title
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tag_artist="$(get_field "tag artist")"
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tag_title="$(get_field "tag title")"
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if [ -n "$tag_artist" ] && [ -n "$tag_title" ]; then
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echo "$tag_artist - $tag_title"
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fi
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}
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function get_file_name() {
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local fn
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fn="$(get_field file)"
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fn="${fn##*/}"
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fn="${fn%%.*}"
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echo "$fn"
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}
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if $LOOP && multiple_instances_running; then
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if $AQUIRE_LEADER; then
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echo "Other instances have been detected."
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aquire_leader
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else
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echo "ERROR: Other instances are running and leader aquisition not set." 1>&2
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exit 10
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fi
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fi
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# shellcheck disable=SC2086
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[ -n "$COMMAND" ] && cmus-remote $COMMAND
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while true; do
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QUERY_RESULT="$(cmus-remote --query 2>/dev/null)"
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[ -z "$QUERY_RESULT" ] && write_status "🎵❌" && continue
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PROGRESS="$(get_progress)"
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STATUS="$(get_status)"
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NAME="$(get_artist_title)"
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[ -z "$NAME" ] && NAME="$(get_file_name)"
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OUT="${STATUS^}"
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[ -n "$NAME" ] && OUT+=" $NAME"
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[ -n "$PROGRESS" ] && [ "$STATUS" != "⏹️" ] && OUT+=" ($PROGRESS)"
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write_status "$OUT"
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done
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