'use strict';

/**
 *
 *
 * @author Mai
 * @date
 * @version
 */

const fs = require('fs');
const path = require('path');
var util = require('util');
var logPath = path.join(__dirname, 'update_ledger_his.log');
var logFile = fs.createWriteStream(logPath, { flags: 'a' });
console.log = function() {
  logFile.write(util.format.apply(null, arguments) + '\n');
  process.stdout.write(util.format.apply(null, arguments) + '\n');
};

const mysql = require('mysql');
const oss = require('ali-oss');
const config = process.argv.splice(2)[0];
if (['local', 'uat', 'default'].indexOf(config) < 0) throw `参数错误: ${config}`;
const options = require(`../config/config.${config}`)({ baseDir: __dirname + '/app', root: __dirname, name: 'calc' });

const pool = mysql.createPool(options.mysql.client);
const ossOption = {
  bucket: options.oss.clients.his.bucket,
  accessKeyId: options.oss.default.accessKeyId,
  accessKeySecret: options.oss.default.accessKeySecret,
  endpoint: options.oss.default.endpoint,
  timeout: options.oss.default.timeout,
};
const ossClient = new oss(ossOption);

const querySql = async function(sql, sqlParam) {
  return new Promise(function(resolve, reject) {
    pool.getConnection(function(err, conn) {
      if (err) {
        if (err) console.log(err);
        reject(err);
      } else {
        conn.query(sql, sqlParam, function(err, rows, fields) {
          if (err) console.log(err);
          // 释放连接
          conn.release();
          // 传递Promise回调对象
          resolve(rows);
        });
      }
    });
  });
};

const loadLedgerDataFromOss = async function(url) {
  let File;
  try {
    File = await ossClient.get(options.hisOssPath + url);
  } catch(err) {
    if (err.status === 404) return 0;
    throw err;
  }
  if (File.res.status !== 200) return '获取修订台账有误';
  const result = JSON.parse(File.content);
  return result.length;
};

const doCompleteLedgerHis = async function(l) {
  const bills_count = await loadLedgerDataFromOss(l.bills_file);
  const pos_count = await loadLedgerDataFromOss(l.pos_file);
  await querySql('Update zh_ledger_history Set bills_count = ?, pos_count = ? Where id = ?', [bills_count, pos_count, l.id]);
  console.log(`ledgerHis-${l.id}(${l.tid}): billsCount(${bills_count}), posCount(${pos_count})`);
};

const doComplete = async function() {
    try {
      //const ledgerHis = await querySql('Select * From zh_ledger_history where bills_count = 0 order by id asc');
      const ledgerHis = await querySql('Select * From zh_ledger_history');
      for (const l of ledgerHis) {
        await doCompleteLedgerHis(l);
      }
    } catch (err) {
      console.log(err);
    }
    pool.end();
};
doComplete();