1 files changed, 100 insertions, 0 deletions
diff --git a/.config/awesome/services/mpris/init.lua b/.config/awesome/services/mpris/init.lua
new file mode 100644
index 0000000..3659a3a
--- /dev/null
+++ b/.config/awesome/services/mpris/init.lua
@@ -0,0 +1,100 @@
+local gobject = require "gears.object"
+local playerctl = require "services.mpris.playerctl"
+local qpersistent = require "quarrel.persistent"
+
+---@class ServiceMpris : gears.object
+---@field inner Playerctl
+---@field index number the index of the currently active player
+local M = {}
+
+---@param self ServiceMpris
+---@param player Playerctl.data
+local function update_player(self, player)
+    self:emit_signal("player::metadata", player)
+    self:emit_signal("player::position", player)
+    -- handle_position(nil, player)
+end
+
+---@param diff_player Playerctl.data
+local function recalculate_active_player(diff_player, vanished)
+    if type(diff_player) ~= "table" then
+        return
+    end
+    -- if #layout.children == 0 then
+    --     M.active_player_index = 1
+    --     update_player()
+    --     return
+    -- end
+
+    local active_player = players[M.active_player_index]
+    if not active_player then -- we're recovering from a state with no players
+        update_player(diff_player)
+        return
+    end
+
+    if diff_player.instance == active_player.instance and vanished then -- active player vanished; fall back to previous player
+        M.previous_player()
+    else -- non-active player appeared/vanished; try to find active player
+        for i, p in ipairs(playerctl:list()) do
+            if p.instance == active_player.instance then
+                M.active_player_index = i
+                update_player(p)
+                return
+            end
+        end
+
+        gdebug.print_warning(
+            "failed to find active player:\n    " .. gdebug.dump_return(active_player, nil, 2):gsub("\n", "\n    ")
+        )
+        M.active_player_index = 1
+        update_player(playerctl:list()[M.active_player_index])
+    end
+end
+
+function M:next_player()
+    local players = self.inner:list()
+
+    if #players == 0 then
+        return
+    elseif self.index + 1 > #players then
+        self.index = 1
+    else
+        self.index = self.index + 1
+    end
+
+    -- update_player(playerctl:list()[M.active_player_index])
+    local player = players[self.index]
+    self:emit_signal("player::metadata", player)
+    self:emit_signal("player::position", player)
+end
+
+function M:previous_player()
+    local players = self.inner:list()
+    if #players == 0 then
+        return
+    elseif self.index - 1 < #players then
+        self.index = #players
+    else
+        self.index = self.index - 1
+    end
+
+    local player = players[self.index]
+    self:emit_signal("player::metadata", player)
+    self:emit_signal("player::position", player)
+end
+
+M.inner = playerctl.new {
+    players = {},
+    metadata = {
+        album = "xesam:album",
+        title = "xesam:title",
+        artist = "xesam:artist",
+        art = "mpris:artUrl",
+    },
+}
+
+local instance = gobject { class = M }
+instance:connect_signal("property::index", function(self, index)
+    qpersistent.store("active_player_index", self.index)
+end)
+return instance