/**
 * 岗位表（job_postings）客户端接口：仅查本表字段，不连表
 */

const Framework = require('../../framework/node-core-framework.js');

/**
 * 从 resume_info.job_listings 解析 Boss Tab 文案列表（与 get_job_listings 一致）
 * @param {unknown} job_listings
 * @returns {string[]}
 */
function parse_resume_tab_labels(job_listings) {
  if (job_listings == null) return [];
  let arr = job_listings;
  if (typeof arr === 'string') {
    try {
      arr = JSON.parse(arr);
    } catch (e) {
      return [];
    }
  }
  if (!Array.isArray(arr)) return [];
  const out = [];
  arr.forEach((item) => {
    if (item == null) return;
    if (typeof item === 'string') {
      const s = item.trim();
      if (s) out.push(s);
      return;
    }
    if (typeof item === 'object' && item.text != null) {
      const s = String(item.text).trim();
      if (s) out.push(s);
    }
  });
  return [...new Set(out)];
}

module.exports = {
  /**
   * 按设备 SN 拉取 jobId -> 投递结果字段（is_delivered、deliver_failed_reason、applyStatus）
   * 用于 Electron 职位列表页合并展示，不查 apply_records
   */
  'POST /job_postings/deliver_status_map': async (ctx) => {
    const models = Framework.getModels();
    const { job_postings, op } = models;
    const body = ctx.getBody() || {};
    const sn_code = body.sn_code || ctx.query?.sn_code;
    const platform = body.platform || 'boss';
    const startTime = body.startTime;
    const endTime = body.endTime;

    if (!sn_code) {
      return ctx.fail('请提供设备SN码');
    }

    const where = { sn_code, platform };
    if (startTime || endTime) {
      where.last_modify_time = {};
      if (startTime) {
        where.last_modify_time[op.gte] = new Date(startTime);
      }
      if (endTime) {
        const end = new Date(endTime);
        end.setHours(23, 59, 59, 999);
        where.last_modify_time[op.lte] = end;
      }
    }

    const rows = await job_postings.findAll({
      where,
      attributes: ['jobId', 'is_delivered', 'deliver_failed_reason', 'applyStatus', 'last_modify_time'],
      order: [['last_modify_time', 'DESC']],
      limit: Math.min(Number(body.limit) || 2000, 5000)
    });

    const list = rows.map((r) => {
      const j = r.toJSON ? r.toJSON() : r;
      return {
        jobId: j.jobId,
        is_delivered: !!j.is_delivered,
        deliver_failed_reason: j.deliver_failed_reason || '',
        applyStatus: j.applyStatus || 'pending',
        last_modify_time: j.last_modify_time
      };
    });

    return ctx.success({ list });
  },

  /**
   * 按设备 SN 分页查询 job_postings（仅本表字段，用于 Electron 职位列表只读展示）
   */
  'POST /job_postings/page_list': async (ctx) => {
    const models = Framework.getModels();
    const { job_postings, resume_info, op } = models;
    const body = ctx.getBody() || {};
    const sn_code = body.sn_code || ctx.query?.sn_code;
    const platform = body.platform || 'boss';

    if (!sn_code) {
      return ctx.fail('请提供设备SN码');
    }

    const page = Math.max(1, Number(body.page) || 1);
    const raw_page_size = body.page_size ?? body.pageSize ?? 20;
    const page_size = Math.min(100, Math.max(1, Number(raw_page_size) || 20));
    const offset = (page - 1) * page_size;

    const base_where = { sn_code, platform };
    const startTime = body.startTime;
    const endTime = body.endTime;
    if (startTime || endTime) {
      base_where.last_modify_time = {};
      if (startTime) {
        base_where.last_modify_time[op.gte] = new Date(startTime);
      }
      if (endTime) {
        const end = new Date(endTime);
        end.setHours(23, 59, 59, 999);
        base_where.last_modify_time[op.lte] = end;
      }
    }

    let tab_labels = [];
    if (resume_info) {
      const resume = await resume_info.findOne({
        where: { sn_code, platform, isActive: true },
        order: [['last_modify_time', 'DESC']]
      });
      if (resume) {
        const rj = resume.toJSON ? resume.toJSON() : resume;
        tab_labels = parse_resume_tab_labels(rj.job_listings);
      }
    }

    /** 不按「当前投递标签」过滤；列表为设备+平台下库中全部职位（各标签写入的 keyword 均会出现在列表中）。tab_labels 供前端展示「账户已同步的全部 Tab」 */
    const where = base_where;

    const { rows, count } = await job_postings.findAndCountAll({
      where,
      attributes: [
        'id',
        'jobId',
        'jobTitle',
        'companyName',
        'salary',
        'location',
        'education',
        'experience',
        'last_modify_time',
        'create_time',
        'is_delivered',
        'deliver_failed_reason',
        'applyStatus',
        'platform',
        'keyword',
        'aiMatchScore'
      ],
      limit: page_size,
      offset,
      order: [['last_modify_time', 'DESC']]
    });

    const list = rows.map((r) => {
      const j = r.toJSON ? r.toJSON() : r;
      return j;
    });

    return ctx.success({
      list,
      total: count,
      page,
      page_size,
      tab_labels
    });
  }
};