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

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

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

  List<String> names() => events.map((e) => e.$1).toList();
  List<Map<String, dynamic>?> props() => events.map((e) => e.$2).toList();

  test('互动四事件：source 逐字段（22 号白名单键集）', () {
    analytics.postLiked(source: InteractionSource.feed);
    analytics.postUnliked(source: InteractionSource.postDetail);
    analytics.postFavorited(source: InteractionSource.postDetail);
    analytics.postUnfavorited(source: InteractionSource.feed);

    expect(names(), [
      'post_liked',
      'post_unliked',
      'post_favorited',
      'post_unfavorited',
    ]);
    expect(props(), [
      {'source': 'feed'},
      {'source': 'post_detail'},
      {'source': 'post_detail'},
      {'source': 'feed'},
    ]);
  });

  test('comment_create_succeeded：durationMs/isReply/textLengthBucket', () {
    analytics.commentCreateSucceeded(
      durationMs: 4200,
      isReply: false,
      textLength: 12,
    );
    expect(names(), ['comment_create_succeeded']);
    expect(props().single, {
      'durationMs': 4200,
      'isReply': false,
      'textLengthBucket': 'short',
    });
  });

  test('comment_create_failed：httpStatus 由五位业务码推导，网络错误缺席', () {
    analytics.commentCreateFailed(
      reason: CommentCreateFailureReason.validationError,
      attemptSeq: 2,
      errorCode: 40000,
    );
    analytics.commentCreateFailed(
      reason: CommentCreateFailureReason.networkError,
      attemptSeq: 3,
    );
    expect(names(), ['comment_create_failed', 'comment_create_failed']);
    expect(props(), [
      {
        'failureReason': 'validation_error',
        'attemptSeq': 2,
        'errorCode': 40000,
        'httpStatus': 400,
      },
      {'failureReason': 'network_error', 'attemptSeq': 3},
    ]);
  });

  test('关注对：user_followed / user_unfollowed', () {
    analytics.userFollowed(source: InteractionSource.postDetail);
    analytics.userUnfollowed(source: InteractionSource.postDetail);
    expect(names(), ['user_followed', 'user_unfollowed']);
    expect(props(), [
      {'source': 'post_detail'},
      {'source': 'post_detail'},
    ]);
  });

  test('textLengthBucketOf 分桶边界（06 §1.3 红线：不报精确字数）', () {
    expect(textLengthBucketOf(0), 'empty');
    expect(textLengthBucketOf(1), 'short');
    expect(textLengthBucketOf(50), 'short');
    expect(textLengthBucketOf(51), 'medium');
    expect(textLengthBucketOf(500), 'medium');
    expect(textLengthBucketOf(501), 'long');
  });

  test('失败原因映射：网络归并口径 + 防枚举族归 not_found + 会话失效 null', () {
    expect(
      commentCreateFailureReasonOf(const ApiNetworkException()),
      CommentCreateFailureReason.networkError,
    );
    expect(
      commentCreateFailureReasonOf(const ApiRateLimitException()),
      CommentCreateFailureReason.rateLimited,
    );
    expect(
      commentCreateFailureReasonOf(
        const ApiBusinessException(code: ApiCodes.paramError, message: 'x'),
      ),
      CommentCreateFailureReason.validationError,
    );
    expect(
      commentCreateFailureReasonOf(
        const ApiBusinessException(code: ApiCodes.postNotFound, message: 'x'),
      ),
      CommentCreateFailureReason.notFound,
    );
    expect(
      commentCreateFailureReasonOf(
        const ApiBusinessException(code: 50000, message: 'x'),
      ),
      CommentCreateFailureReason.serverError,
    );
    expect(
      commentCreateFailureReasonOf(const SessionExpiredException()),
      isNull,
    );
  });
}