import 'package:flutter_test/flutter_test.dart';
import 'package:patbond_flutter/core/network/api_exception.dart';
import 'package:patbond_flutter/features/community/feed_analytics.dart';

void main() {
  late List<(String, Map<String, dynamic>?)> events;
  late FeedAnalytics analytics;

  setUp(() {
    events = [];
    analytics = FeedAnalytics(
      (name, [props]) async => events.add((name, props)),
    );
  });

  test('feed_viewed：五个专有属性逐一上报（06 §1.4 白名单）', () {
    analytics.feedViewed(
      feedTab: FeedTab.home,
      durationMs: 12345,
      impressionCount: 7,
      loadMoreCount: 2,
      refreshCount: 1,
    );

    expect(events, hasLength(1));
    expect(events.single.$1, 'feed_viewed');
    expect(events.single.$2, {
      'feedTab': 'home',
      'durationMs': 12345,
      'impressionCount': 7,
      'loadMoreCount': 2,
      'refreshCount': 1,
    });
  });

  test('feed_load_failed：业务码带 errorCode 并推导 httpStatus', () {
    analytics.feedLoadFailed(
      feedTab: FeedTab.home,
      loadType: FeedLoadType.loadMore,
      reason: FeedLoadFailureReason.serverError,
      errorCode: 40403,
    );

    expect(events.single.$1, 'feed_load_failed');
    expect(events.single.$2, {
      'feedTab': 'home',
      'loadType': 'load_more',
      'failureReason': 'server_error',
      'errorCode': 40403,
      'httpStatus': 404,
    });
  });

  test('feed_load_failed：网络错误缺席 errorCode/httpStatus', () {
    analytics.feedLoadFailedFrom(
      const ApiNetworkException(),
      feedTab: FeedTab.home,
      loadType: FeedLoadType.refresh,
    );

    expect(events.single.$2, {
      'feedTab': 'home',
      'loadType': 'refresh',
      'failureReason': 'network_error',
    });
  });

  test('异常映射：限流/网络/业务兜底；会话失效不上报', () {
    expect(
      feedLoadFailureReasonOf(const ApiRateLimitException()),
      FeedLoadFailureReason.rateLimited,
    );
    expect(
      feedLoadFailureReasonOf(const ApiNetworkException()),
      FeedLoadFailureReason.networkError,
    );
    expect(
      feedLoadFailureReasonOf(
        const ApiBusinessException(code: 40000, message: 'x'),
      ),
      FeedLoadFailureReason.serverError,
    );
    expect(feedLoadFailureReasonOf(const SessionExpiredException()), isNull);

    analytics.feedLoadFailedFrom(
      const SessionExpiredException(),
      feedTab: FeedTab.home,
      loadType: FeedLoadType.refresh,
    );
    expect(events, isEmpty);
  });
}