'use strict';

/**
 * 智能问数智能体 · HTML 分析报告工具
 * ----------------------------------------------------------------------------
 * build_report：为指定区间生成经营分析 HTML 报告的入口。报告本体由既有的
 * report-html.js / GET /api/reports/report-html 即时生成（零重复实现），工具
 * 只负责钳制区间、组装链接并说明报告内容；前端以「查看分析报告」按钮呈现。
 */

const { ymdDash } = require('./lake.js');

function reportSanitize(args, ctx) {
  const a = args || {};
  const { dateRange } = ctx;
  const from = /^\d{8}$/.test(String(a.from || '')) ? String(a.from) : dateRange.from;
  const to = /^\d{8}$/.test(String(a.to || '')) ? String(a.to) : dateRange.to;
  return { from: from < dateRange.from ? dateRange.from : from, to: to > dateRange.to ? dateRange.to : to };
}

function reportHandler(ctx, args) {
  const { entityKey, dateRange } = ctx;
  const { from, to } = args;
  const params = new URLSearchParams({ entity: entityKey, from, to });
  const url = `/api/reports/report-html?${params.toString()}`;
  const wholeLake = from === dateRange.from && to === dateRange.to;
  return {
    summary: `已就绪经营分析报告：${ymdDash(from)} ~ ${ymdDash(to)}${wholeLake ? '（全湖区间）' : ''}，包含 KPI 概览、逐日趋势与门店明细（HTML，浏览器新窗口打开，可打印导出 PDF）。回答中提示用户点击「查看分析报告」查看。`,
    data: { url, from, to },
  };
}

module.exports = { reportSanitize, reportHandler };