from __future__ import annotations


class MediaControlsPlugin:
    name = "Media Controls"
    desc = "Send system media keys through the backend plugin action path."
    version = "0.1.0"
    actions = [
        {
            "id": "media_key",
            "name": "Media Key",
            "desc": "Play/pause, skip, stop, mute, or adjust volume.",
            "fields": [
                {
                    "id": "command",
                    "label": "Command",
                    "type": "select",
                    "default": "play_pause",
                    "options": [
                        {"label": "Play / Pause", "value": "play_pause"},
                        {"label": "Next Track", "value": "next"},
                        {"label": "Previous Track", "value": "previous"},
                        {"label": "Stop", "value": "stop"},
                        {"label": "Volume Up", "value": "volume_up"},
                        {"label": "Volume Down", "value": "volume_down"},
                        {"label": "Mute", "value": "mute"},
                    ],
                }
            ],
        },
        {
            "id": "volume_repeat",
            "name": "Volume Repeat",
            "desc": "Send volume up or down multiple times.",
            "fields": [
                {
                    "id": "direction",
                    "label": "Direction",
                    "type": "select",
                    "default": "volume_up",
                    "options": [
                        {"label": "Volume Up", "value": "volume_up"},
                        {"label": "Volume Down", "value": "volume_down"},
                    ],
                },
                {"id": "steps", "label": "Steps", "type": "number", "default": 3},
            ],
        },
    ]

    def on_load(self, ctx):
        ctx.db.add_event("plugin.loaded", {"plugin": self.name})

    def execute_action(self, ctx, action_id, config, event):
        if action_id == "media_key":
            self._press(config.get("command", "play_pause"))
            return
        if action_id == "volume_repeat":
            steps = max(1, min(20, int(config.get("steps", 3) or 3)))
            command = config.get("direction", "volume_up")
            for _ in range(steps):
                self._press(command)
            return
        raise ValueError(f"Unknown media action '{action_id}'.")

    def _press(self, command):
        from pynput.keyboard import Controller, Key

        keys = {
            "play_pause": "media_play_pause",
            "next": "media_next",
            "previous": "media_previous",
            "stop": "media_stop",
            "volume_up": "media_volume_up",
            "volume_down": "media_volume_down",
            "mute": "media_volume_mute",
        }
        key_name = keys.get(command)
        if not key_name:
            raise ValueError(f"Unknown media command '{command}'.")
        key = getattr(Key, key_name, None)
        if key is None:
            raise RuntimeError(f"pynput does not expose Key.{key_name} on this platform.")
        keyboard = Controller()
        keyboard.press(key)
        keyboard.release(key)


PLUGIN = MediaControlsPlugin()