nix/module/common/tmux/Script.nix

{ setting, util, ... }: {
	text = util.trimTabs ''
		#!/usr/bin/env bash

		function _tmux_battery() {
			local IFS=$'\n'

			local batteries=($(ls /sys/class/power_supply/ | grep ^BAT[0-9]$))
			[[ "''${batteries}" = "" ]] && return 1

			local battery="/sys/class/power_supply/''${batteries[0]}"
			local level=$(cat ''${battery}/capacity)
			local status=$(cat ''${battery}/status)
			local is_charging=false
			[[ "''${status}" = "Charging" ]] && is_charging=true

			local icon
			if ((level>=${toString(setting.tmux.status.battery.threshold.high)}))
			then
				icon="󱊣"
			elif ((level>=${toString(setting.tmux.status.battery.threshold.medium)}))
			then
				icon="󱊢"
			elif ((level>=${toString(setting.tmux.status.battery.threshold.low)}))
			then
				icon="󱊡"
			else
				icon="󰂎"
			fi

			echo -n "''${icon}"
			''${is_charging} && echo -n "󱐋"
			echo
			echo -n "''${level}"
		}

		function _tmux_volume() {
			local IFS=$'\n'
			local level=$(wpctl get-volume @DEFAULT_SINK@ | cut -d\  -f2 | sed -e "s/^0//" -e "s/\.//")
			[[ "''${level}" = "" ]] && return 1
			[[ "''${level}" = "00" ]] && level="0"

			local icon
			if ((level>=${toString(setting.tmux.status.volume.threshold.high)}))
			then
				icon="󰕾"
			elif ((level>=${toString(setting.tmux.status.volume.threshold.medium)}))
			then
				icon="󰖀"
			elif ((level>=${toString(setting.tmux.status.volume.threshold.low)}))
			then
				icon=""
			else
				icon="󰝟"
			fi

			local muted=$(wpctl get-volume @DEFAULT_SINK@ | grep '[MUTED]')
			if [[ "''${muted}" != "" ]]; then
				icon="󰸈"
			fi

			echo "''${icon}"
			echo -n "''${level}"
		}

		function _tmux_statusbar() {
			local IFS=$'\n'
			local sep=""
			local thr_volume=${toString(setting.tmux.status.volume.threshold.show)}
			local thr_battery=${toString(setting.tmux.status.battery.threshold.show)}
			local is_uber=$(cat "/tmp/.tmux_uber" || echo -n false)

			# Get data.
			battery=($(_tmux_battery))
			volume=($(_tmux_volume))

			# Prepare separators.
			sep_batvol=" "

			if ''${is_uber} || [[ "''${battery[1]}" -lt "''${thr_battery}" ]] || [[ "''${volume[1]}" -gt "''${thr_volume}" ]]; then
				sep_batvol=" ''${sep} "
			fi
			if [[ "''${battery[0]}" = "" ]]; then
				sep_batvol=""
			fi

			# Print.
			echo -n " "

			# Assemble.
			if ''${is_uber}; then
				local lang=($(_tmux_language))
				[[ "''${lang[0]}" != "" ]] && {
					echo -n "''${lang[0]} ''${sep} "
				};

				[[ "''${volume[0]}"  != "" ]] && echo -n "''${volume[0]} ''${volume[1]}%''${sep_batvol}"
				[[ "''${battery[0]}" != "" ]] && echo -n "''${battery[0]} ''${battery[1]}%"
			else
				[[ "''${volume[0]}"  != "" ]] && {
					echo -n "''${volume[0]}"
					[[ "''${volume[1]}" -gt 100 ]] && echo -n " ''${volume[1]}%"
					echo -n "''${sep_batvol}"
				};
				[[ "''${battery[0]}" != "" ]] && {
					echo -n "''${battery[0]}"
					[[ "''${battery[1]}" -lt 40 ]] && echo -n " ''${battery[1]}%"
				};
			fi

			echo -n " "
		}

		function _tmux_language() {
			local IFS=$'\n'
			local lang=$(swaymsg -t get_inputs | jq 'map(select(has("xkb_active_layout_name")))[0].xkb_active_layout_name')

			echo -n ''${lang:1:2}
		}

		function _tmux_client_count() {
			local IFS=$'\n'
			local session=''${1}
			local count=$(tmux list-clients -t ''${session} | wc -l)

			[ ''${count} -gt 1 ] && echo -n "+''${count} "
		}

		function _tmux_toggle_statusbar() {
			local file="/tmp/.tmux_uber"
			if [[ ! -f ''${file} ]]; then
				echo "true" > ''${file}
			elif $(cat ''${file}); then
				echo "false" > ''${file}
			else
				echo "true" > ''${file}
			fi
		}

		IFS=$'\n'
		action=''${1}
		session=''${2}

		case "''${action}" in
			"statusbar")       _tmux_statusbar ;;
			"client_count")    _tmux_client_count ''${session} ;;
			"togglestatusbar") _tmux_toggle_statusbar ;;
		esac
	'';
}