import { BaseEntity, transformerJson } from '../../base/entity/base';
import { Column, Entity, Index } from 'typeorm';
import type { CardCase } from '../../../comm/types/omni';

/**
 * 标杆案例作品集实体
 * 映射数据表 card_cases，严格契合 CardCase 跨端数据契约
 */
@Entity('card_cases')
export class CardCasesEntity extends BaseEntity implements CardCase {
  @Index()
  @Column({
    name: 'card_id',
    comment: '所属名片 ID',
    type: 'bigint',
  })
  cardId: number;

  @Column({
    name: 'title',
    comment: '案例标题/项目名称',
    length: 150,
  })
  title: string;

  @Column({
    name: 'client',
    comment: '客户/合作品牌名称',
    length: 100,
    nullable: true,
  })
  client: string;

  @Column({
    name: 'duration',
    comment: '项目周期 (如: 2024.01 - 2024.06)',
    length: 50,
    nullable: true,
  })
  duration: string;

  @Column({
    name: 'metrics',
    comment: '量化成效/KPI (如: +150% 留资率, 2M+ 曝光)',
    length: 255,
    nullable: true,
  })
  metrics: string;

  @Column({
    name: 'cover_image',
    comment: '案例封面图 URL',
    length: 500,
    nullable: true,
  })
  coverImage: string;

  @Column({
    name: 'pdf_url',
    comment: '案例详情 PDF / 白皮书 URL',
    length: 500,
    nullable: true,
  })
  pdfUrl: string;

  @Column({
    name: 'description',
    comment: '案例详情简述/背景成果',
    type: 'text',
    nullable: true,
  })
  description: string;

  @Column({
    name: 'meta_json',
    comment: '扩展元数据 JSON (包含 images 相册图片数组、kpis 量化指标等)',
    type: 'json',
    nullable: true,
    transformer: transformerJson,
  })
  metaJson?: Record<string, unknown> | string;

  @Index()
  @Column({
    name: 'sort_order',
    comment: '排序序号 (升序)',
    type: 'int',
    default: 0,
  })
  sortOrder: number;
}