import 'package:flutter_test/flutter_test.dart';
import 'package:miler/data/task_profile.dart';

/// One rider, mixed work, and every row deciding its own workflow.
///
/// These tests exist because the app used to answer "what kind of work is
/// this?" by looking at the **rider** — his tenant, resolved once at login into
/// a single app-wide service line. That answer is the same for every row on the
/// screen, so a customer pickup sitting beside a kitchen collection either took
/// the kitchen's rules or disappeared. The rider is one person with a mixed
/// queue; the queue decides.
///
/// Every input below is what `GET /miler/bookings` actually sends.

Map<String, dynamic> _row({
  String? nextAction,
  String? pickupSourceType,
  String? stopType,
}) => <String, dynamic>{
  if (nextAction != null) 'next_action': nextAction,
  if (pickupSourceType != null) 'pickup_source_type': pickupSourceType,
  if (stopType != null) 'stoptype': stopType,
};

void main() {
  group('a row is classified from the server\'s own words', () {
    test('a customer door pickup is a customer pickup', () {
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'customer'),
      );
      expect(t.kind, WorkKind.customerPickup);
      expect(t.capturesShipmentDetails, isTrue);
      expect(t.groupsBySource, isFalse);
    });

    test('a kitchen load is a source pickup, and groups', () {
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'kitchen'),
      );
      expect(t.kind, WorkKind.sourcePickup);
      expect(t.groupsBySource, isTrue);
      expect(t.capturesShipmentDetails, isFalse);
    });

    test('a base collection is a source pickup too', () {
      expect(
        TaskProfile.of(_row(nextAction: 'pickup', pickupSourceType: 'hub')).kind,
        WorkKind.sourcePickup,
      );
    });

    test('carrying it to a receiver is a delivery', () {
      expect(
        TaskProfile.of(_row(nextAction: 'deliver')).kind,
        WorkKind.customerDelivery,
      );
      expect(
        TaskProfile.of(_row(nextAction: 'start_delivery')).kind,
        WorkKind.customerDelivery,
      );
    });

    test('carrying it to a base is a handover', () {
      final t = TaskProfile.of(_row(nextAction: 'inward_at_hub'));
      expect(t.kind, WorkKind.hubHandover);
      expect(t.endsAtHub, isTrue);
      expect(t.deliversToCustomer, isFalse);
    });

    test('terminal rows are done', () {
      expect(TaskProfile.of(_row(nextAction: 'none')).kind, WorkKind.done);
      expect(
        TaskProfile.of(_row(nextAction: 'handed_to_hub')).kind,
        WorkKind.done,
      );
    });

    test('collected with no stated leg is custody-without-destination', () {
      // NextLeg.unknown's case: it is in his bag and nobody has said where it
      // goes. Not a delivery (no destination to offer) and not done (he is
      // still holding it).
      final t = TaskProfile.of(_row(stopType: 'delivery'));
      expect(t.kind, WorkKind.unknown);
      expect(t.deliversToCustomer, isFalse);
      expect(t.endsAtHub, isFalse);
    });

    test('an unheard-of source takes the safe shape, never a guess', () {
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'something_new'),
      );
      expect(t.kind, WorkKind.unknown);
      expect(
        t.capturesShipmentDetails,
        isFalse,
        reason: 'the door-capture flow is a claim this row has not earned',
      );
      expect(
        t.groupsBySource,
        isFalse,
        reason: 'nor is a heading it can be filed under',
      );
    });

    test('a row with no type fields at all does not group', () {
      // Every fixture written before pickup_source_type shipped, and every
      // booking still in flight from then. This defaulted to sourcePickup once
      // and split a one-base logistics day into a group per customer --
      // hub_pickup_group_test.dart is the test that caught it.
      final legacy = <String, dynamic>{
        'orderid': '9',
        'pickupid': '9',
        'pickupaddress': 'RS Puram, Coimbatore',
        'type': 'pickup',
      };
      final t = TaskProfile.of(legacy);
      expect(t.kind, WorkKind.unknown);
      expect(t.groupsBySource, isFalse);
      expect(t.capturesShipmentDetails, isFalse);
    });

    test('the leg outranks where it was collected from', () {
      // Picked up at a customer's door, now in the bag on its way to a base.
      // It is a handover, not a pickup — it stopped being a pickup the moment
      // it was collected, and only the leg knows that.
      final t = TaskProfile.of(
        _row(nextAction: 'inward_at_hub', pickupSourceType: 'customer'),
      );
      expect(t.kind, WorkKind.hubHandover);
    });
  });

  group('surfaces', () {
    test('an unaccepted customer pickup waits on Home', () {
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'customer'),
      );
      expect(t.surfaceWhen(accepted: false), WorkSurface.home);
    });

    test('accepting a customer pickup moves it to Bookings', () {
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'customer'),
      );
      expect(t.surfaceWhen(accepted: true), WorkSurface.bookings);
    });

    test('a kitchen load stays on Home even once accepted', () {
      // Accepting a manifest puts nothing in his hands. It leaves Home when he
      // is actually carrying it, not when he agrees to fetch it.
      final t = TaskProfile.of(
        _row(nextAction: 'pickup', pickupSourceType: 'kitchen'),
      );
      expect(t.surfaceWhen(accepted: true), WorkSurface.home);
    });

    test('anything in custody is on Deliveries', () {
      for (final action in ['deliver', 'start_delivery', 'inward_at_hub']) {
        expect(
          TaskProfile.of(_row(nextAction: action)).surfaceWhen(accepted: true),
          WorkSurface.deliveries,
          reason: action,
        );
      }
      expect(
        TaskProfile.of(_row(stopType: 'delivery')).surfaceWhen(accepted: true),
        WorkSurface.deliveries,
      );
    });

    test('finished work is on Activity', () {
      expect(
        TaskProfile.of(_row(nextAction: 'none')).surfaceWhen(accepted: true),
        WorkSurface.activity,
      );
    });
  });

  group('the mixed shift', () {
    // The case the architecture exists for: one rider around RS Puram holding
    // ten meal parcels to collect at a Gandhipuram kitchen and five customer
    // pickups at five different doors, all at once.
    final queue = <Map<String, dynamic>>[
      for (var i = 0; i < 10; i++)
        _row(nextAction: 'pickup', pickupSourceType: 'kitchen'),
      for (var i = 0; i < 5; i++)
        _row(nextAction: 'pickup', pickupSourceType: 'customer'),
    ];

    test('all fifteen survive classification', () {
      final kinds = queue.map((r) => TaskProfile.of(r).kind).toList();
      expect(kinds.length, 15);
      expect(kinds.where((k) => k == WorkKind.sourcePickup).length, 10);
      expect(kinds.where((k) => k == WorkKind.customerPickup).length, 5);
      expect(
        kinds.contains(WorkKind.unknown),
        isFalse,
        reason: 'nothing falls through to the safe shape when the server spoke',
      );
    });

    test('accepting the five does not move the ten', () {
      final surfaces = queue
          .map((r) => TaskProfile.of(r).surfaceWhen(accepted: true))
          .toList();
      expect(surfaces.where((s) => s == WorkSurface.home).length, 10);
      expect(surfaces.where((s) => s == WorkSurface.bookings).length, 5);
    });

    test('collected meal parcels coexist with a CX handover on Deliveries', () {
      final afterCollection = <Map<String, dynamic>>[
        for (var i = 0; i < 10; i++) _row(nextAction: 'deliver'),
        // The CX pickup, now completed, has become a base handover.
        _row(nextAction: 'inward_at_hub', pickupSourceType: 'customer'),
      ];
      final surfaces = afterCollection
          .map((r) => TaskProfile.of(r).surfaceWhen(accepted: true))
          .toSet();
      expect(surfaces, {WorkSurface.deliveries});
    });
  });

  group('a trip is described by what is actually in it', () {
    Map<String, dynamic> row({String? a, String? src}) => <String, dynamic>{
      if (a != null) 'next_action': a,
      if (src != null) 'pickup_source_type': src,
    };

    test('a mixed trip both groups and ends at a base', () {
      final stops = [
        row(a: 'pickup', src: 'kitchen'),
        row(a: 'pickup', src: 'customer'),
        row(a: 'inward_at_hub'),
      ];
      expect(TripShape.groupsBySource(stops), isTrue);
      expect(TripShape.endsAtHub(stops), isTrue);
      expect(TripShape.hasCustomerPickup(stops), isTrue);
    });

    test('one parcel bound for a base ends the whole day at that base', () {
      // `any`, not `every`. Telling a rider "END · HOME" while he is still
      // carrying something the network needs is the failure worth avoiding.
      final stops = [row(a: 'deliver'), row(a: 'inward_at_hub')];
      expect(TripShape.endsAtHub(stops), isTrue);
    });

    test('a pure meal round neither groups to a base nor returns to one', () {
      final stops = [row(a: 'deliver'), row(a: 'deliver')];
      expect(TripShape.endsAtHub(stops), isFalse);
      expect(TripShape.hasCustomerPickup(stops), isFalse);
    });
  });
}