from datetime import timedelta

from flask import Blueprint, jsonify, request

from app.routes.auth_decorators import require_auth
from app.services.feed_quality.evaluator import reevaluate_feed_alerts_for_period
from app.services.feed_quality.query import feed_alerts_summary, list_feed_alerts
from app.services.feed_quality.settings_store import (
    normalize_settings,
    save_feed_quality_settings,
    settings_for_api,
)
from app.timeutil import utc_now_naive

bp = Blueprint("feed_quality", __name__, url_prefix="/api/feed-quality")


@bp.get("/settings")
@require_auth
def get_settings():
    return jsonify(settings_for_api())


@bp.put("/settings")
@require_auth
def put_settings():
    body = request.get_json(silent=True) or {}
    partial = body.get("settings") if isinstance(body.get("settings"), dict) else body
    try:
        saved = save_feed_quality_settings(normalize_settings(partial))
    except (TypeError, ValueError) as exc:
        return jsonify({"error": True, "message": str(exc)}), 400

    today = utc_now_naive().date()
    week_ago = today - timedelta(days=7)
    reevaluated = reevaluate_feed_alerts_for_period(
        date_from=week_ago.isoformat(),
        date_to=today.isoformat(),
        limit=500,
    )
    return jsonify({"saved": True, "settings": saved, "reevaluatedReports": reevaluated})


@bp.get("/alerts/summary")
@require_auth
def alerts_summary():
    return jsonify(
        feed_alerts_summary(
            date_from=request.args.get("date_from"),
            date_to=request.args.get("date_to"),
            dispenser_id=request.args.get("dispenser_id"),
        )
    )


@bp.get("/alerts")
@require_auth
def alerts_list():
    try:
        limit = int(request.args.get("limit", 200))
    except (TypeError, ValueError):
        limit = 200
    return jsonify(
        list_feed_alerts(
            date_from=request.args.get("date_from"),
            date_to=request.args.get("date_to"),
            severity=request.args.get("severity"),
            event_type=request.args.get("event_type"),
            dispenser_id=request.args.get("dispenser_id"),
            limit=limit,
        )
    )