"""Route handlers for /api/review-queue endpoint.

Import into app.py and register routes in create_app().
"""

import logging

from aiohttp import web
from review_queue import fetch_review_queue

logger = logging.getLogger("argus.review_queue")


async def handle_review_queue(request):
    """GET /api/review-queue — PR review pipeline view.

    Query params:
      status: filter by status (broken, needs-review, approved-awaiting-merge, changes-requested)
      author: filter by agent/author name
      domain: filter by domain

    Returns JSON with queue items sorted by display priority:
      broken (flagged) > needs-review (by age) > approved-awaiting-merge
    """
    token = request.app.get("_forgejo_token")

    try:
        queue = await fetch_review_queue(forgejo_token=token)
    except Exception as e:
        logger.error("Review queue fetch failed: %s", e)
        return web.json_response({"error": str(e)}, status=500)

    # Apply filters
    status_filter = request.query.get("status")
    if status_filter:
        queue = [item for item in queue if item["status"] == status_filter]

    author_filter = request.query.get("author")
    if author_filter:
        queue = [item for item in queue if item["author"] == author_filter]

    domain_filter = request.query.get("domain")
    if domain_filter:
        queue = [item for item in queue if item["domain"] == domain_filter]

    # Summary stats
    status_counts = {}
    for item in queue:
        status_counts[item["status"]] = status_counts.get(item["status"], 0) + 1

    return web.json_response({
        "queue": queue,
        "total": len(queue),
        "status_counts": status_counts,
    })


def register_review_queue_routes(app, forgejo_token=None):
    """Register review queue routes on the app.

    forgejo_token: optional Forgejo API token for authenticated requests
    """
    app["_forgejo_token"] = forgejo_token
    app.router.add_get("/api/review-queue", handle_review_queue)