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

/// post 域埋点封装（T3-17）：键集与 22 号白名单 v3 事件 22~29 逐一对齐、
/// 分桶边界、异常 → failureReason 映射、隐私红线（无内容 ID / 无精确字数）。
void main() {
  late List<(String, Map<String, dynamic>?)> events;
  late PostAnalytics analytics;

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

  group('键集与白名单对齐（22 号 §1）', () {
    test('post_create_started：entryPoint', () {
      analytics.postCreateStarted(entryPoint: PostEntryPoint.createTab);
      expect(events.single.$1, 'post_create_started');
      expect(events.single.$2, {'entryPoint': 'create_tab'});
    });

    test('post_draft_saved：trigger + mediaCount', () {
      analytics.postDraftSaved(trigger: DraftSaveTrigger.onExit, mediaCount: 3);
      expect(events.single.$1, 'post_draft_saved');
      expect(events.single.$2, {'trigger': 'on_exit', 'mediaCount': 3});
    });

    test('post_publish_succeeded：五键齐 + 正文只出分桶', () {
      analytics.postPublishSucceeded(
        durationMs: 8200,
        mediaCount: 2,
        topicCount: 0,
        textLength: 120,
        fromDraft: true,
      );
      final props = events.single.$2!;
      expect(
        props.keys,
        containsAll(<String>[
          'durationMs',
          'mediaCount',
          'topicCount',
          'textLengthBucket',
          'fromDraft',
        ]),
      );
      expect(props['textLengthBucket'], 'medium');
      expect(props['fromDraft'], isTrue);
      // 红线 1/2：不带精确字数、不带 postId。
      expect(props.containsKey('textLength'), isFalse);
      expect(props.containsKey('postId'), isFalse);
    });

    test(
      'post_publish_failed：failureReason/attemptSeq/errorCode/httpStatus',
      () {
        analytics.postPublishFailed(
          reason: PostPublishFailureReason.mediaUploadIncomplete,
          attemptSeq: 2,
          errorCode: 42203,
        );
        expect(events.single.$2, {
          'failureReason': 'media_upload_incomplete',
          'attemptSeq': 2,
          'errorCode': 42203,
          'httpStatus': 422,
        });
      },
    );

    test('post_publish_failed：网络错误无 errorCode/httpStatus', () {
      analytics.postPublishFailed(
        reason: PostPublishFailureReason.networkError,
        attemptSeq: 1,
      );
      expect(events.single.$2, {
        'failureReason': 'network_error',
        'attemptSeq': 1,
      });
    });

    test('post_deleted：空属性集（单事件风格）', () {
      analytics.postDeleted();
      expect(events.single.$1, 'post_deleted');
      expect(events.single.$2, isEmpty);
    });

    test('媒体三段：键集齐 + 只出桶不出字节数/文件名', () {
      analytics.mediaUploadStarted(
        mediaType: MediaType.image,
        byteSize: 3 * 1024 * 1024,
      );
      analytics.mediaUploadSucceeded(
        mediaType: MediaType.image,
        byteSize: 3 * 1024 * 1024,
        durationMs: 4300,
      );
      analytics.mediaUploadFailed(
        mediaType: MediaType.image,
        byteSize: 3 * 1024 * 1024,
        reason: MediaUploadFailureReason.cancelled,
        attemptSeq: 1,
      );
      expect(events.map((event) => event.$1), [
        'post_media_upload_started',
        'post_media_upload_succeeded',
        'post_media_upload_failed',
      ]);
      expect(events[0].$2, {'mediaType': 'image', 'sizeBucket': 'mb_1_5'});
      expect(events[1].$2, {
        'mediaType': 'image',
        'sizeBucket': 'mb_1_5',
        'durationMs': 4300,
      });
      expect(events[2].$2, {
        'mediaType': 'image',
        'sizeBucket': 'mb_1_5',
        'failureReason': 'cancelled',
        'attemptSeq': 1,
      });
      for (final event in events) {
        expect(event.$2!.containsKey('byteSize'), isFalse);
        expect(event.$2!.containsKey('fileName'), isFalse);
      }
    });
  });

  group('分桶边界（06 §1.3 红线 4）', () {
    test('mediaSizeBucketOf 四档', () {
      const mib = 1024 * 1024;
      expect(mediaSizeBucketOf(0), 'lt_1mb');
      expect(mediaSizeBucketOf(mib - 1), 'lt_1mb');
      expect(mediaSizeBucketOf(mib), 'mb_1_5');
      expect(mediaSizeBucketOf(5 * mib - 1), 'mb_1_5');
      expect(mediaSizeBucketOf(5 * mib), 'mb_5_20');
      expect(mediaSizeBucketOf(20 * mib - 1), 'mb_5_20');
      expect(mediaSizeBucketOf(20 * mib), 'gte_20mb');
    });
  });

  group('异常 → 发布失败原因', () {
    test('42203 → media_upload_incomplete；40905/40000 → validation_error', () {
      expect(
        postPublishFailureReasonOf(const MediaNotReadyException(message: 'x')),
        PostPublishFailureReason.mediaUploadIncomplete,
      );
      expect(
        postPublishFailureReasonOf(
          const IdempotencyMismatchException(message: 'x'),
        ),
        PostPublishFailureReason.validationError,
      );
      expect(
        postPublishFailureReasonOf(
          const ApiBusinessException(code: 40000, message: 'x'),
        ),
        PostPublishFailureReason.validationError,
      );
    });

    test('40403 → not_found；40902 → server_error；限流/网络各自归位', () {
      expect(
        postPublishFailureReasonOf(const PostNotFoundException(message: 'x')),
        PostPublishFailureReason.notFound,
      );
      expect(
        postPublishFailureReasonOf(
          const PostVersionConflictException(message: 'x'),
        ),
        PostPublishFailureReason.serverError,
      );
      expect(
        postPublishFailureReasonOf(const ApiRateLimitException()),
        PostPublishFailureReason.rateLimited,
      );
      expect(
        postPublishFailureReasonOf(const ApiNetworkException()),
        PostPublishFailureReason.networkError,
      );
    });

    test('会话失效不上报（null）', () {
      expect(
        postPublishFailureReasonOf(const SessionExpiredException()),
        isNull,
      );
    });
  });
}