"""Stream routes for managing streaming service links."""

from flask import Blueprint, jsonify, request

from app.database import db
from app.models.stream import Stream
from app.services.decorators import require_auth

bp = Blueprint("stream", __name__)


@bp.route("/add-url", methods=["POST"])
@require_auth
def add_url():
    """Add a URL to the stream processing queue."""
    try:
        data = request.get_json()

        if not data or "url" not in data:
            return jsonify({"error": "URL is required"}), 400

        url = data["url"].strip()
        if not url:
            return jsonify({"error": "URL cannot be empty"}), 400

        # Check if URL already exists
        existing_stream = Stream.query.filter_by(url=url).first()
        if existing_stream:
            return (
                jsonify(
                    {
                        "error": "URL already exists in stream",
                        "stream": existing_stream.to_dict(),
                    }
                ),
                409,
            )

        # Try to extract basic metadata to check for service/service_id duplicates
        from app.services.stream_processing_service import (
            StreamProcessingService,
        )

        try:
            metadata, _ = StreamProcessingService._extract_metadata(url)
            if metadata:
                service = metadata.get("service")
                service_id = metadata.get("service_id")

                if service and service_id:
                    existing_service_stream = Stream.query.filter_by(
                        service=service, service_id=service_id
                    ).first()

                    if existing_service_stream:
                        return (
                            jsonify(
                                {
                                    "error": f"Stream already exists with {service} ID: {service_id}",
                                    "existing_stream": existing_service_stream.to_dict(),
                                }
                            ),
                            409,
                        )
        except Exception as e:
            # If metadata extraction fails here, we'll let the background process handle it
            # This is just an early check to prevent obvious duplicates
            pass

        # Create stream entry with pending status
        stream = Stream.create_stream(url=url, status="pending", commit=True)

        # Add to processing queue (will be implemented next)
        from app.services.stream_processing_service import (
            StreamProcessingService,
        )

        StreamProcessingService.add_to_queue(stream.id)

        return (
            jsonify(
                {
                    "message": "URL added to processing queue",
                    "stream": stream.to_dict(),
                }
            ),
            201,
        )

    except Exception as e:
        db.session.rollback()
        return jsonify({"error": str(e)}), 500


@bp.route("/", methods=["GET"])
@require_auth
def list_streams():
    """List all streams with optional filtering."""
    try:
        status = request.args.get("status")
        service = request.args.get("service")

        query = Stream.query

        if status:
            query = query.filter_by(status=status)
        if service:
            query = query.filter_by(service=service)

        streams = query.order_by(Stream.created_at.desc()).all()

        return (
            jsonify({"streams": [stream.to_dict() for stream in streams]}),
            200,
        )

    except Exception as e:
        return jsonify({"error": str(e)}), 500


@bp.route("/<int:stream_id>", methods=["GET"])
@require_auth
def get_stream(stream_id):
    """Get a specific stream by ID."""
    try:
        stream = Stream.query.get_or_404(stream_id)
        return jsonify({"stream": stream.to_dict()}), 200

    except Exception as e:
        return jsonify({"error": str(e)}), 500


@bp.route("/<int:stream_id>", methods=["PUT"])
@require_auth
def update_stream(stream_id):
    """Update stream metadata."""
    try:
        stream = Stream.query.get_or_404(stream_id)
        data = request.get_json()

        if not data:
            return jsonify({"error": "No data provided"}), 400

        # Update allowed fields
        updatable_fields = [
            "title",
            "track",
            "artist",
            "album",
            "genre",
            "status",
        ]
        for field in updatable_fields:
            if field in data:
                setattr(stream, field, data[field])

        db.session.commit()

        return (
            jsonify(
                {
                    "message": "Stream updated successfully",
                    "stream": stream.to_dict(),
                }
            ),
            200,
        )

    except Exception as e:
        db.session.rollback()
        return jsonify({"error": str(e)}), 500


@bp.route("/<int:stream_id>", methods=["DELETE"])
@require_auth
def delete_stream(stream_id):
    """Delete a stream."""
    try:
        stream = Stream.query.get_or_404(stream_id)

        # If stream is being processed, mark for deletion instead
        if stream.status == "processing":
            stream.status = "cancelled"
            db.session.commit()
            return jsonify({"message": "Stream marked for cancellation"}), 200

        db.session.delete(stream)
        db.session.commit()

        return jsonify({"message": "Stream deleted successfully"}), 200

    except Exception as e:
        db.session.rollback()
        return jsonify({"error": str(e)}), 500


@bp.route("/queue/status", methods=["GET"])
@require_auth
def queue_status():
    """Get the current processing queue status."""
    try:
        from app.services.stream_processing_service import (
            StreamProcessingService,
        )

        status = StreamProcessingService.get_queue_status()
        return jsonify(status), 200

    except Exception as e:
        return jsonify({"error": str(e)}), 500