import { defineEventHandler, EventHandlerRequest } from 'h3';
import { DB } from '~~/server/db/DB';
import { createErrorResponse, createSuccessResponse, IResponse } from '~~/server/utils/response';
import { IChannel } from '../channel/[id]';

export interface IArticle {
  id: number;
  model_id: number;
  channel_id: number;
  title: string;
  desc: string;
  image: string,
  video?: string,
  images: string;
  seotitle: string;
  keywords: string;
  description: string;
  tags: string;
  diyname: string;
  publishtime: number;
  createtime: number;
  views: number;
  content: string;
  channel: IChannel;
  outlink?: string;
}

export default defineEventHandler<EventHandlerRequest, Promise<IResponse<IArticle>>>(async (event) => {
  try {
    const id = event.context.params?.id;
    if (!id)
      return createErrorResponse('分类ID不能为空');
    const article = await DB.table('pr_cms_archives')
            .where('id', id)
            .whereNull('deletetime')
            .where('status', 'normal')
            .first();
    if (!article) 
      return createErrorResponse('文章不存在');

    const channel = await DB.table('pr_cms_channel')
            .where('id', article.channel_id)
            .first();
    if (!channel)
      return createErrorResponse('分类不存在');
    article.channel = channel;

    // 2. 通过model_id从pr_cms_model表中获取table字段
    const model = await DB.table('pr_cms_model')
      .where('id', article.model_id)
      .select('table')
      .first();
    if (!model)
      return createErrorResponse('分类不存在');
        
    // 3. 通过table指定的表通过id查出content
    const content = await DB.table(`pr_${model.table}`)
      .where('id', id)
      .select('content')
      .first();
    
    // 4. 合并返回结果
    if (content && content['content']) {
      article.content = content['content'];
    }

    return createSuccessResponse(article);
  } catch (error) {
    return createErrorResponse(error);
  }
});