import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:miler/Models/summary/pickupstats.dart';
import 'package:miler/data/api_config.dart';
import 'package:miler/views/helpers/constants/apiconstants.dart';
import 'package:flutter/foundation.dart';

class SummaryProvider {
  final String baseUrl = ApiConstants.summaryApiLive;

  Future<PickupStats?> fetchSummaryStats(int userId) => _fetchSummaryStatsNew();

  /// `GET /miler/earnings?period=daily|weekly|monthly`
  ///
  /// → `data: { completed_stops, cancelled_stops, total_stops, total_kms,
  /// total_earnings, total_bonus }`.
  ///
  /// ── The success rate is read, not derived ──
  ///
  /// `cancelled_stops` and `total_stops` did not exist, so the page computed a
  /// success rate from `completed_stops` alone — which is a rate with no
  /// denominator, and it read 100% on a day with three cancellations. Both
  /// counts ship now and the figures come off the response.
  ///
  /// The three period calls stay three calls: the endpoint answers for one
  /// period at a time, and the page shows all three.
  Future<PickupStats?> _fetchSummaryStatsNew() async {
    Future<({int done, int cancelled, int total})> stops(String period) async {
      try {
        final uri = Uri.parse(
          ApiConfig.url('/miler/earnings'),
        ).replace(queryParameters: {'period': period});
        final res = await http.get(uri, headers: await ApiConfig.authHeaders());
        if (res.statusCode >= 200 && res.statusCode < 300) {
          final decoded = json.decode(res.body);
          final d = (decoded is Map && decoded['data'] is Map)
              ? decoded['data'] as Map
              : {};
          int n(String key) => int.tryParse('${d[key] ?? 0}') ?? 0;
          final done = n('completed_stops');
          final cancelled = n('cancelled_stops');
          // A server that has not shipped `total_stops` yet answers 0, and a
          // total below the completed count is not a total — fall back to what
          // is certainly true rather than printing a rate over nothing.
          final reported = n('total_stops');
          final total = reported >= done + cancelled
              ? reported
              : done + cancelled;
          return (done: done, cancelled: cancelled, total: total);
        }
      } catch (_) {}
      return (done: 0, cancelled: 0, total: 0);
    }

    final today = await stops('daily');
    final week = await stops('weekly');
    final month = await stops('monthly');
    return PickupStats(
      today: today.done,
      week: week.done,
      month: month.done,
      total: month.total,
      // Was hardcoded to zero because nothing reported it. It is the month's
      // figure, to match `total` — the two are one fraction and must come from
      // one period or the rate is nonsense.
      cancelled: month.cancelled,
    );
  }
}