import 'package:flutter_test/flutter_test.dart';
import 'package:miler/Models/stop_status.dart';
import 'fixtures/demo_stops.dart';

/// Injecting demo stops into Bookings is only half the fix. The tab drops
/// anything still pending — it shows work the rider has *taken on* — so demo
/// stops that arrive as `status: 'new'` are filtered out silently and the tab
/// stays empty anyway. These tests pin the states, because a regression there
/// looks exactly like "the mock data doesn't work" with nothing in the logs.
void main() {
  /// The predicate Bookings uses to decide a stop belongs to it at all
  /// (pickups.dart — anything still pending lives on Home instead).
  bool survivesBookingsFilter(Map<String, dynamic> o) {
    final status = (o['orderstatus']?.toString().toLowerCase() ?? '').trim();
    const pending = {'', 'assigned', 'miler_assigned', 'pending', 'new'};
    return !pending.contains(status);
  }

  test('every demo booking survives the accepted-only filter', () {
    final bookings = getDemoBookings(riderId: 4021);
    expect(bookings, isNotEmpty);
    expect(
      bookings.where(survivesBookingsFilter).length,
      bookings.length,
      reason: 'a demo stop left as "new" is dropped and never reaches the list',
    );
  });

  test('covers every state the tab can render', () {
    final statuses = getDemoBookings(riderId: 4021)
        .map((b) => stopStatusFromRaw(b['orderstatus']))
        .toSet();

    // Two finished ones give the progress bar something green; the active one
    // drives the banner and blocks the rest; the skipped one is the amber
    // return-visit case.
    expect(statuses, contains(StopStatus.picked));
    expect(statuses, contains(StopStatus.active));
    expect(statuses, contains(StopStatus.skipped));
    expect(statuses, contains(StopStatus.accepted));
  });

  test('leaves enough open stops to fill the list', () {
    // Bookings excludes active and finished stops from the card list — those
    // go to the banner and the progress count. What is left has to be more
    // than a couple of cards or the tab still looks broken.
    final open = getDemoBookings(riderId: 4021).where((b) {
      final st = stopStatusFromRaw(b['orderstatus']);
      return st != StopStatus.active &&
          st != StopStatus.picked &&
          st != StopStatus.cancelled;
    }).length;
    expect(open, greaterThanOrEqualTo(8));
  });

  test('is the same route Home gave the miler', () {
    final home = getDemoTripStops(riderId: 4021).take(12);
    final bookings = getDemoBookings(riderId: 4021);
    expect(
      bookings.map((b) => b['orderid']),
      home.map((b) => b['orderid']),
      reason: 'Bookings must not invent a second, unrelated route',
    );
  });

  pipelineTests();

  test('two milers get different bookings', () {
    final a = getDemoBookings(riderId: 4021).map((b) => b['orderid']).toSet();
    final b = getDemoBookings(riderId: 4022).map((b) => b['orderid']).toSet();
    expect(a.intersection(b), isEmpty);
  });
}

/// The first fix for the empty Bookings tab was gated on the RAW api response
/// (`items.isEmpty`), but the tab renders a list that survives two more
/// filters. A signed-in miler's backend answer is rarely empty — it is full of
/// ASSIGNED bookings, which belong on Home and are filtered out here — so the
/// fallback never fired and the tab stayed blank. These tests pin the end of
/// the pipeline, using the real production helpers, not a paraphrase of them.
void pipelineTests() {
  /// Bookings' accepted-only predicate.
  List<Map<String, dynamic>> keepWorkable(
    List<Map<String, dynamic>> items,
    Set<String> acceptedIds,
  ) =>
      items.where((o) {
        final id = (o['orderid'] ?? '').toString();
        if (id.isNotEmpty && acceptedIds.contains(id)) return true;
        final status =
            (o['orderstatus']?.toString().toLowerCase() ?? '').trim();
        const pending = {'', 'assigned', 'miler_assigned', 'pending', 'new'};
        return !pending.contains(status);
      }).toList();

  test('a backend full of ASSIGNED bookings still leaves the tab empty', () {
    // What the live backend actually returns for a seeded miler.
    final fromApi = [
      for (var i = 0; i < 6; i++)
        <String, dynamic>{'orderid': 'API-$i', 'orderstatus': 'miler_assigned'},
    ];
    expect(fromApi, isNotEmpty, reason: 'the raw response is NOT empty');
    expect(keepWorkable(fromApi, {}), isEmpty,
        reason: 'yet nothing survives — which is why the old gate never fired');
  });

  test('the fallback keyed on the filtered list produces visible cards', () {
    final fromApi = [
      for (var i = 0; i < 6; i++)
        <String, dynamic>{'orderid': 'API-$i', 'orderstatus': 'miler_assigned'},
    ];

    var workable = keepWorkable(fromApi, {});
    if (workable.isEmpty) workable = getDemoBookings(riderId: 4021);

    // Bookings' list excludes active and finished stops — those go to the
    // banner and the progress count.
    final listForTop = workable.where((o) {
      final st = stopStatusFromRaw(o['orderstatus']);
      return st != StopStatus.active &&
          st != StopStatus.picked &&
          st != StopStatus.cancelled;
    }).toList();

    expect(listForTop, isNotEmpty, reason: 'the rider must see cards');
    expect(listForTop.length, greaterThanOrEqualTo(8));
  });
}