import { describe, expect, it } from 'vitest';

import { WorldType, type CustomWorldProfile } from '../types';
import { resolveCustomWorldCoverPresentation } from './customWorldCover';

function createBaseProfile(): CustomWorldProfile {
  return {
    id: 'custom-world-cover-test',
    settingText: '潮雾群岛',
    name: '潮雾群岛',
    subtitle: '封面规则测试',
    summary: '用于验证默认封面优先级。',
    tone: '潮湿、压抑',
    playerGoal: '查明旧航道真相。',
    templateWorldType: WorldType.WUXIA,
    compatibilityTemplateWorldType: WorldType.WUXIA,
    majorFactions: [],
    coreConflicts: [],
    attributeSchema: {
      id: 'schema:test',
      worldId: 'CUSTOM',
      schemaVersion: 1,
      generatedFrom: {
        worldType: WorldType.CUSTOM,
        worldName: '潮雾群岛',
        settingSummary: '封面规则测试',
        tone: '潮湿、压抑',
        conflictCore: '旧航道真相',
      },
      slots: [],
    },
    playableNpcs: [
      {
        id: 'playable-1',
        name: '林潮',
        title: '守潮人',
        role: '可扮演角色',
        description: '负责守住第一道进港口。',
        backstory: '他在港口旧案里失去过同伴。',
        personality: '谨慎克制。',
        motivation: '想查清货船去向。',
        combatStyle: '借地形换位。',
        initialAffinity: 20,
        relationshipHooks: ['旧案'],
        tags: ['港口'],
        backstoryReveal: {
          publicSummary: '他对港口格外熟悉。',
          chapters: [],
        },
        skills: [],
        initialItems: [],
        imageSrc: '/images/roles/linchao.webp',
      },
    ],
    storyNpcs: [],
    items: [],
    camp: {
      id: 'camp-1',
      name: '守夜营地',
      description: '潮线后的临时据点。',
      imageSrc: '/images/camp/camp.webp',
      sceneNpcIds: [],
      connections: [],
    },
    landmarks: [
      {
        id: 'landmark-1',
        name: '潮汐码头',
        description: '涨潮时会吞掉半截栈桥。',
        imageSrc: '/images/landmark/docks.webp',
        sceneNpcIds: [],
        connections: [],
      },
    ],
    sceneChapterBlueprints: [
      {
        id: 'scene-chapter-1',
        sceneId: 'landmark-1',
        title: '潮汐码头',
        summary: '第一章开局场景。',
        sceneTaskDescription: '追查潮汐码头失踪案的第一条线索。',
        linkedThreadIds: [],
        linkedLandmarkIds: ['landmark-1'],
        acts: [
          {
            id: 'act-1',
            sceneId: 'landmark-1',
            title: '雾里靠岸',
            summary: '玩家第一次进入港口。',
            stageCoverage: ['opening'],
            backgroundImageSrc: '/images/scene/act-1.webp',
            backgroundAssetId: 'asset-scene-act-1',
            encounterNpcIds: [],
            primaryNpcId: 'playable-1',
            oppositeNpcId: 'playable-1',
            eventDescription: '玩家第一次进入港口，发现涨潮后的异常痕迹。',
            linkedThreadIds: [],
            advanceRule: 'after_primary_contact',
            actGoal: '拿到第一句真话。',
            transitionHook: '下一幕将进入封锁区。',
          },
        ],
      },
    ],
  };
}

describe('resolveCustomWorldCoverPresentation', () => {
  it('优先使用开局场景第一幕图片作为默认封面底图', () => {
    const profile = createBaseProfile();

    const result = resolveCustomWorldCoverPresentation(profile);

    expect(result.imageSrc).toBe('/images/scene/act-1.webp');
    expect(result.renderMode).toBe('scene_with_roles');
    expect(result.characterImageSrcs).toEqual(['/images/roles/linchao.webp']);
  });

  it('当第一幕图片缺失时按营地图与地标图顺序回退', () => {
    const profile = createBaseProfile();
    const firstSceneChapter = profile.sceneChapterBlueprints?.[0];
    const firstSceneAct = firstSceneChapter?.acts[0];
    if (!firstSceneChapter || !firstSceneAct) {
      throw new Error('expected base profile to provide an opening scene chapter');
    }
    profile.sceneChapterBlueprints = [
      {
        ...firstSceneChapter,
        acts: [
          {
            ...firstSceneAct,
            backgroundImageSrc: null,
            backgroundAssetId: null,
          },
        ],
      },
    ];

    const fallbackToCamp = resolveCustomWorldCoverPresentation(profile);
    expect(fallbackToCamp.imageSrc).toBe('/images/camp/camp.webp');

    profile.camp = {
      ...profile.camp!,
      imageSrc: '',
    };
    const fallbackToLandmark = resolveCustomWorldCoverPresentation(profile);
    expect(fallbackToLandmark.imageSrc).toBe('/images/landmark/docks.webp');
  });
});