import 'dart:async';

import 'package:flutter_test/flutter_test.dart';
import 'package:ikar/core/media/send_media_separately.dart';

void main() {
  test(
    'waits for each send, preserves order and uses caption only once',
    () async {
      final first = Completer<void>();
      final calls = <(int, String)>[];
      final items = [1, 2, 3];
      final sending = sendMediaSeparately(
        items,
        'Synthetic caption',
        canSend: () => true,
        send: (item, caption) async {
          calls.add((item, caption));
          if (item == 1) await first.future;
        },
      );
      expect(calls, [(1, 'Synthetic caption')]);
      items.clear();
      first.complete();
      await sending;
      expect(calls, [(1, 'Synthetic caption'), (2, ''), (3, '')]);
    },
  );

  test('stops after chat is closed', () async {
    var mounted = true;
    final calls = <int>[];
    await sendMediaSeparately(
      [1, 2],
      '',
      canSend: () => mounted,
      send: (item, _) async {
        calls.add(item);
        mounted = false;
      },
    );
    expect(calls, [1]);
  });

  test('propagates failure without sending remaining media', () async {
    final calls = <int>[];
    await expectLater(
      sendMediaSeparately(
        [1, 2],
        '',
        canSend: () => true,
        send: (item, _) async {
          calls.add(item);
          throw StateError('Synthetic upload failure');
        },
      ),
      throwsStateError,
    );
    expect(calls, [1]);
  });
}