import * as fs from 'fs';
import * as path from 'path';
import { CONTROLLER_KEY, getClassMetadata } from '@midwayjs/core';
import { BaseController, CoolCommException, CurdOption } from '@cool-midway/core';
import { AdminCardBentoController } from '../../../src/modules/card/controller/admin/bento';
import { CardBentoEntity } from '../../../src/modules/card/entity/bento';
import { CardBentoService } from '../../../src/modules/card/service/bento';
import type {
  BentoBlockType,
  BentoColSpan,
  BentoRowSpan,
} from '../../../src/comm/types/omni';

/**
 * CoolController 元数据（脚本路径解析为异步）
 */
interface CoolControllerMeta {
  prefix?: string;
  curdOption?: CurdOption;
}

/**
 * 等待 CoolController 将 CRUD 配置写入类元数据
 */
async function waitCoolMeta(
  target: new (...args: never[]) => unknown
): Promise<CoolControllerMeta> {
  const started = Date.now();
  while (Date.now() - started < 2000) {
    const meta = getClassMetadata(CONTROLLER_KEY, target) as
      | CoolControllerMeta
      | undefined;
    if (meta?.curdOption) {
      return meta;
    }
    await new Promise<void>(resolve => setImmediate(resolve));
  }
  throw new Error(`${target.name} 的 CoolController 元数据未就绪`);
}

function serviceApiMethods(apis: CurdOption['serviceApis'] = []): string[] {
  return apis.map(api => (typeof api === 'string' ? api : api.method));
}

interface BentoFindOptions {
  where?: Partial<Pick<CardBentoEntity, 'id' | 'cardId' | 'status'>>;
  order?: Partial<Record<'id' | 'sortOrder', 'ASC' | 'DESC' | 'asc' | 'desc'>>;
}

/**
 * 内存 Repository，覆盖 getBlocksByCardId / batchSaveLayout / toggleStatus 所需能力
 */
class MemoryBentoRepo {
  private data: CardBentoEntity[] = [];
  private currentId = 1;

  constructor(initialData: Array<Partial<CardBentoEntity>> = []) {
    this.data = initialData.map(item => this.createEntity(item));
    if (this.data.length > 0) {
      this.currentId = Math.max(...this.data.map(d => Number(d.id) || 0)) + 1;
    }
  }

  private createEntity(item: Partial<CardBentoEntity>): CardBentoEntity {
    const entity = new CardBentoEntity();
    Object.assign(entity, {
      id: item.id || this.currentId++,
      createTime: item.createTime || new Date(),
      updateTime: new Date(),
      status: item.status !== undefined ? item.status : 1,
      colSpan: item.colSpan !== undefined ? item.colSpan : 1,
      rowSpan: item.rowSpan !== undefined ? item.rowSpan : 1,
      sortOrder: item.sortOrder !== undefined ? item.sortOrder : 0,
      ...item,
    });
    return entity;
  }

  async find(options?: BentoFindOptions): Promise<CardBentoEntity[]> {
    let result = [...this.data];
    if (options?.where) {
      const where = options.where;
      result = result.filter(item => {
        const keys = Object.keys(where) as Array<keyof typeof where>;
        return keys.every(key => {
          const expected = where[key];
          return expected === undefined || item[key] === expected;
        });
      });
    }

    if (options?.order) {
      const orderKeys = Object.keys(options.order) as Array<
        keyof NonNullable<BentoFindOptions['order']>
      >;
      result.sort((a, b) => {
        for (const key of orderKeys) {
          const dir = (options.order?.[key] || 'ASC').toUpperCase();
          if (a[key] < b[key]) return dir === 'ASC' ? -1 : 1;
          if (a[key] > b[key]) return dir === 'ASC' ? 1 : -1;
        }
        return 0;
      });
    }

    return result.map(item => ({ ...item } as CardBentoEntity));
  }

  async findOneBy(
    where: Partial<Pick<CardBentoEntity, 'id' | 'cardId' | 'status'>>
  ): Promise<CardBentoEntity | null> {
    const found = this.data.find(item => {
      const keys = Object.keys(where) as Array<keyof typeof where>;
      return keys.every(key => {
        const expected = where[key];
        return expected === undefined || item[key] === expected;
      });
    });
    return found ? ({ ...found } as CardBentoEntity) : null;
  }

  async save(
    entityOrEntities: Partial<CardBentoEntity> | Array<Partial<CardBentoEntity>>
  ): Promise<CardBentoEntity | CardBentoEntity[]> {
    if (Array.isArray(entityOrEntities)) {
      const savedList: CardBentoEntity[] = [];
      for (const item of entityOrEntities) {
        savedList.push((await this.save(item)) as CardBentoEntity);
      }
      return savedList;
    }

    const item = entityOrEntities;
    if (item.id) {
      const index = this.data.findIndex(d => d.id === item.id);
      if (index !== -1) {
        this.data[index] = {
          ...this.data[index],
          ...item,
          updateTime: new Date(),
        } as CardBentoEntity;
        return { ...this.data[index] } as CardBentoEntity;
      }
    }

    const newEntity = this.createEntity(item);
    this.data.push(newEntity);
    return { ...newEntity } as CardBentoEntity;
  }

  async delete(
    condition: number | string | number[] | Partial<Pick<CardBentoEntity, 'id' | 'cardId'>>
  ): Promise<{ affected?: number }> {
    const initialLen = this.data.length;
    if (typeof condition === 'number' || typeof condition === 'string') {
      this.data = this.data.filter(d => d.id !== Number(condition));
    } else if (Array.isArray(condition)) {
      const idSet = new Set(condition.map(id => Number(id)));
      this.data = this.data.filter(d => !idSet.has(Number(d.id)));
    } else {
      this.data = this.data.filter(item => {
        const keys = Object.keys(condition) as Array<keyof typeof condition>;
        const matched = keys.some(key => {
          const expected = condition[key];
          return expected !== undefined && item[key] === expected;
        });
        return !matched;
      });
    }
    return { affected: initialLen - this.data.length };
  }
}

function createService(
  seed: Array<Partial<CardBentoEntity>>
): CardBentoService {
  const service = new CardBentoService();
  service.cardBentoEntity =
    new MemoryBentoRepo(seed) as unknown as CardBentoService['cardBentoEntity'];
  return service;
}

function seedBlocks(): Array<Partial<CardBentoEntity>> {
  return [
    {
      id: 1,
      cardId: 100,
      type: 'hero',
      colSpan: 2,
      rowSpan: 1,
      sortOrder: 1,
      title: '个人简介与身份卡',
      content: '全栈出海专家',
      status: 1,
    },
    {
      id: 2,
      cardId: 100,
      type: 'social',
      colSpan: 1,
      rowSpan: 1,
      sortOrder: 3,
      title: '社交媒体矩阵',
      content: 'WhatsApp & LinkedIn',
      status: 1,
    },
    {
      id: 3,
      cardId: 100,
      type: 'case',
      colSpan: 2,
      rowSpan: 2,
      sortOrder: 2,
      title: '新能源出海案例',
      content: '中东客户成功交付',
      status: 0,
    },
    {
      id: 4,
      cardId: 200,
      type: 'hero',
      colSpan: 2,
      rowSpan: 1,
      sortOrder: 1,
      title: '其他名片块',
      status: 1,
    },
  ];
}

describe('后台 Bento 画布 CRUD (Admin Card Bento CoolController)', () => {
  const controllerFile = path.join(
    __dirname,
    '../../../src/modules/card/controller/admin/bento.ts'
  );

  describe('1. 控制器装饰器与路由约定', () => {
    let meta: CoolControllerMeta;
    let option: CurdOption;

    beforeAll(async () => {
      meta = await waitCoolMeta(AdminCardBentoController);
      option = meta.curdOption as CurdOption;
    });

    it('文件路径应符合 /admin/card/bento 自动路由约定', () => {
      expect(fs.existsSync(controllerFile)).toBe(true);
      expect(controllerFile.replace(/\\/g, '/')).toMatch(
        /modules\/card\/controller\/admin\/bento\.ts$/
      );
    });

    it('路由前缀应为 /admin/card/bento', () => {
      expect(meta.prefix).toBe('/admin/card/bento');
    });

    it('控制器应继承 BaseController', () => {
      expect(AdminCardBentoController.prototype).toBeInstanceOf(BaseController);
    });

    it('装饰器 api 必须包含 add/delete/update/info/list/page', () => {
      expect(option.api).toEqual([
        'add',
        'delete',
        'update',
        'info',
        'list',
        'page',
      ]);
    });

    it('应绑定 Bento 实体与 Bento 服务', () => {
      expect(option.entity).toBe(CardBentoEntity);
      expect(option.service).toBe(CardBentoService);
    });

    it('pageQueryOp 应支持 title/content 模糊检索', () => {
      const pageQueryOp = option.pageQueryOp as {
        keyWordLikeFields?: string[];
        fieldEq?: string[];
        addOrderBy?: Record<string, string>;
      };
      expect(pageQueryOp.keyWordLikeFields).toEqual(['a.title', 'a.content']);
    });

    it('pageQueryOp 应支持 cardId/type/status 精确筛选，并按 sortOrder 升序', () => {
      const pageQueryOp = option.pageQueryOp as {
        keyWordLikeFields?: string[];
        fieldEq?: string[];
        addOrderBy?: Record<string, string>;
      };
      expect(pageQueryOp.fieldEq).toEqual(['a.cardId', 'a.type', 'a.status']);
      expect(pageQueryOp.addOrderBy).toEqual({ sortOrder: 'asc' });
    });

    it('应将 getBlocksByCardId / batchSaveLayout / toggleStatus 注册为 serviceApis', () => {
      const methods = serviceApiMethods(option.serviceApis);
      expect(methods).toEqual([
        'getBlocksByCardId',
        'batchSaveLayout',
        'toggleStatus',
      ]);

      const summaries = (option.serviceApis || [])
        .filter((api): api is { method: string; summary: string } =>
          typeof api !== 'string'
        )
        .map(api => ({ method: api.method, summary: api.summary }));

      expect(summaries).toEqual([
        { method: 'getBlocksByCardId', summary: '按名片获取有序 Bento' },
        { method: 'batchSaveLayout', summary: '批量同步画布排版' },
        { method: 'toggleStatus', summary: '切换块启用状态' },
      ]);
    });
  });

  describe('2. batchSaveLayout 旧双参行为不回归', () => {
    it('应支持全量布局保存：更新已有块、新增新块、并自动清理废弃块', async () => {
      const service = createService(seedBlocks());
      const newLayout = [
        {
          id: 2,
          type: 'social' as BentoBlockType,
          colSpan: 1 as BentoColSpan,
          rowSpan: 1 as BentoRowSpan,
          title: '更新后的社交媒体',
        },
        {
          type: 'video' as BentoBlockType,
          colSpan: 2 as BentoColSpan,
          rowSpan: 2 as BentoRowSpan,
          title: '企业出海宣传片',
          mediaUrl: 'https://cdn.omnicard.ai/video/intro.mp4',
        },
      ];

      const saved = await service.batchSaveLayout(100, newLayout);

      expect(saved).toHaveLength(2);
      expect(saved[0].sortOrder).toBe(0);
      expect(saved[0].id).toBe(2);
      expect(saved[0].title).toBe('更新后的社交媒体');
      expect(saved[1].sortOrder).toBe(1);
      expect(saved[1].type).toBe('video');
      expect(saved[1].mediaUrl).toBe(
        'https://cdn.omnicard.ai/video/intro.mp4'
      );

      const remaining100 = await service.getBlocksByCardId(100);
      expect(remaining100.map(b => b.id)).toEqual([2, saved[1].id]);
      expect(remaining100.map(b => b.id)).not.toContain(1);
      expect(remaining100.map(b => b.id)).not.toContain(3);

      const otherCardBlocks = await service.getBlocksByCardId(200);
      expect(otherCardBlocks).toHaveLength(1);
      expect(otherCardBlocks[0].id).toBe(4);
    });

    it('名片 ID 为空时应拒绝保存', async () => {
      const service = createService(seedBlocks());
      await expect(service.batchSaveLayout(0, [])).rejects.toThrow(
        CoolCommException
      );
      await expect(service.batchSaveLayout(0, [])).rejects.toThrow(
        '名片 ID 不能为空'
      );
    });
  });

  describe('3. serviceApis POST body 单参数对象转调', () => {
    it('getBlocksByCardId 接收 { cardId, status } 时应转调已有双参签名', async () => {
      const service = createService(seedBlocks());
      const enabled = await service.getBlocksByCardId({
        cardId: 100,
        status: 1,
      });
      expect(enabled.map(b => b.id)).toEqual([1, 2]);

      const ordered = await service.getBlocksByCardId({ cardId: 100 });
      expect(ordered.map(b => b.id)).toEqual([1, 3, 2]);
    });

    it('batchSaveLayout 接收 { cardId, blocks } 时应转调已有双参签名', async () => {
      const service = createService(seedBlocks());
      const saved = await service.batchSaveLayout({
        cardId: 100,
        blocks: [
          {
            id: 2,
            type: 'social',
            colSpan: 1,
            rowSpan: 1,
            title: '对象体同步',
          },
        ],
      });

      expect(saved).toHaveLength(1);
      expect(saved[0].id).toBe(2);
      expect(saved[0].sortOrder).toBe(0);
      expect(saved[0].title).toBe('对象体同步');

      const remaining = await service.getBlocksByCardId(100);
      expect(remaining).toHaveLength(1);
      expect(remaining[0].id).toBe(2);

      const other = await service.getBlocksByCardId(200);
      expect(other).toHaveLength(1);
      expect(other[0].id).toBe(4);
    });

    it('toggleStatus 接收 { id, targetStatus } 时应转调已有双参签名', async () => {
      const service = createService(seedBlocks());

      const flipped = await service.toggleStatus({ id: 1 });
      expect(flipped.status).toBe(0);

      const explicit = await service.toggleStatus({ id: 1, targetStatus: 1 });
      expect(explicit.status).toBe(1);

      const dual = await service.toggleStatus(1, 0);
      expect(dual.status).toBe(0);

      await expect(service.toggleStatus({ id: 99999 })).rejects.toThrow(
        'Bento 网格块不存在'
      );
    });
  });
});