"""google_meet plugin — let the agent join a Meet call, transcribe it, follow up.

v1: transcribe-only. Spawns a headless Chromium via Playwright, joins the Meet
URL, enables live captions, scrapes them into a transcript file. The agent then
has the transcript in its workspace and can do whatever followup work it needs
using its regular tools.

v2 (not in this PR): realtime duplex audio so the agent can speak in the
meeting, via OpenAI Realtime / Gemini Live + BlackHole / PulseAudio null-sink.
``meet_say`` exists as a stub today so the tool surface is stable.

Explicit-by-design: only joins ``https://meet.google.com/`` URLs explicitly
passed in. No calendar scanning, no auto-dial, no consent announcement.
"""

from __future__ import annotations

import logging
import platform

from plugins.google_meet import process_manager as pm
from plugins.google_meet.cli import register_cli as _register_meet_cli
from plugins.google_meet.cli import meet_command as _meet_command
from plugins.google_meet.tools import (
    MEET_JOIN_SCHEMA,
    MEET_LEAVE_SCHEMA,
    MEET_SAY_SCHEMA,
    MEET_STATUS_SCHEMA,
    MEET_TRANSCRIPT_SCHEMA,
    check_meet_requirements,
    handle_meet_join,
    handle_meet_leave,
    handle_meet_say,
    handle_meet_status,
    handle_meet_transcript,
)

logger = logging.getLogger(__name__)


_TOOLS = (
    ("meet_join",       MEET_JOIN_SCHEMA,       handle_meet_join,       "📞"),
    ("meet_status",     MEET_STATUS_SCHEMA,     handle_meet_status,     "🟢"),
    ("meet_transcript", MEET_TRANSCRIPT_SCHEMA, handle_meet_transcript, "📝"),
    ("meet_leave",      MEET_LEAVE_SCHEMA,      handle_meet_leave,      "👋"),
    ("meet_say",        MEET_SAY_SCHEMA,        handle_meet_say,        "🗣️"),
)


def _on_session_end(**kwargs) -> None:
    """Best-effort cleanup — if a meet bot is still running when the session
    ends, leave the call so we don't orphan a headless Chromium.

    No-ops when nothing is active. Swallows all exceptions — session end must
    not fail because the bot cleanup hit an edge case.
    """
    try:
        status = pm.status()
        if status.get("ok") and status.get("alive"):
            pm.stop(reason="session ended")
    except Exception as e:  # pragma: no cover — defensive
        logger.debug("google_meet on_session_end cleanup failed: %s", e)


def register(ctx) -> None:
    """Register tools, CLI, and lifecycle hooks.

    Called once by the plugin loader when the plugin is enabled via
    ``plugins.enabled`` in config.yaml.
    """
    # Windows is not supported in v1 — audio routing for v2 doesn't have a
    # tested path there and guest-join Chromium is flakier. Refuse to register
    # rather than half-working.
    system = platform.system().lower()
    if system not in ("linux", "darwin"):
        logger.info(
            "google_meet plugin: platform=%s not supported (linux/macos only)",
            system,
        )
        return

    for name, schema, handler, emoji in _TOOLS:
        ctx.register_tool(
            name=name,
            toolset="google_meet",
            schema=schema,
            handler=handler,
            check_fn=check_meet_requirements,
            emoji=emoji,
        )

    ctx.register_cli_command(
        name="meet",
        help="Google Meet bot (join, transcribe, follow up)",
        setup_fn=_register_meet_cli,
        handler_fn=_meet_command,
        description=(
            "Let the hermes agent join a Google Meet call and scrape live "
            "captions into a transcript. See: hermes meet setup"
        ),
    )

    ctx.register_hook("on_session_end", _on_session_end)