const fs = require('fs');
const path = require('path');
var util = require('util');
var logPath = path.join(__dirname, 'recover_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 recoverLedgerHis = async function (id, countField, url) {
    let File;
    try {
        File = await ossClient.get('undefined' + url);
    } catch(err) {
        if (err.status === 404) return;
    }
    if (File.res.status !== 200) {
        await ossClient.put(options.hisOssPath + url, File.content);
        // const result = JSON.parse(File.content);
        // await querySql(`Update zh_ledger_history Set ${countField} = ? Where id = ?`, [result.length, l.id]);
        // console.log(`LedgerHis: ${countField}-${result.length}`);
    }
};

const checkLedgerHis = async function (his) {
    await recoverLedgerHis(his.id, 'bills_count', his.bills_file);
    await recoverLedgerHis(his.id, 'pos_count', his.pos_file);
};

const doComplete = async function() {
    try {
        const ledgerHis = await querySql('Select * From zh_ledger_history where tid = 5709');
        for (const l of ledgerHis) {
            await checkLedgerHis(l);
        }
    } catch (err) {
        console.log(err);
    }
    pool.end();
};
doComplete();