//devicemessages
var mysql = require('mysql2');


// const fs = require('fs');
// const path = require('path');
// const Sequelize = require('sequelize');
// const basename = path.basename(__filename);
const env = process.env.NODE_ENV || 'development';
console.log("ENV: %s", env);
const config = require(__dirname + '/../../config/config.json')[env];

console.log('DB: Checking config sources in devicemessages.js');
console.log('DB: Checking config sources: process.env.DATABASE_HOST: "%s"', process.env.DATABASE_HOST);
console.log('DB: Checking config sources: config.host : "%s"',  config.host );
console.log('DB: Checking config sources: process.env.DATABASE_PORT: %s', process.env.DATABASE_PORT);
console.log('DB: Checking config sources: config.port : %s',  config.port );
console.log('DB: Checking config sources: process.env.DATABASE_NAME: "%s"', process.env.DATABASE_NAME);
console.log('DB: Checking config sources: config.database : "%s"',  config.database );
console.log('DB: Checking config sources: process.env.DATABASE_USER: "%s"', process.env.DATABASE_USER);
console.log('DB: Checking config sources: config.username : "%s"',  config.username );
// console.log('DB: Checking config sources: process.env.DATABASE_PASS: "%s"', process.env.DATABASE_PASS);
// console.log('DB: Checking config sources: config.password : "%s"',  config.password );

var pool  = mysql.createPool({
  connectionLimit : 20,
  host      : process.env.DATABASE_HOST || config.host ||  '127.0.0.1',
  port      : process.env.DATABASE_PORT || config.port ||  '3306',
  user      : process.env.DATABASE_USER || config.username,
  password  : process.env.DATABASE_PASS || config.password,
  database  : process.env.DATABASE_NAME || config.database || 'iot'
});


//const got = require('got');
pool.on('acquire', function (connection) {
  console.log('Connection %d acquired', connection.threadId);
});

exports.findByName = function(fieldName, days, cb) {
  process.nextTick(function() {
    // console.log("findByName(" +fieldName + ",?" + days +")" );
    // days = days|365;
    console.log("findByName(" +fieldName + "," + days +")" );
    pool.getConnection(function(err, con) {
      if (err) throw err; // not connected!
      con.query("SELECT * FROM devicemessages WHERE (field_name=? OR ? IS NULL) AND (timestamp >= ( CURDATE() - INTERVAL ? DAY ))", [fieldName, fieldName, days], (err, data) => {
        con.release();
        if (!err) {
            cb(null, data);
        } else {
            cb(new Error('SQL Error: ' + err));
        }
      });
    });
  });
}

exports.insert = function(device_id, field_name, value, cb){
    var params = [device_id, field_name,value];
    let sql = `INSERT INTO devicemessages(device_id,field_name,field_value,timestamp)
    VALUES (?,?,?,NOW());`;
    pool.getConnection(function(err, con) {
      if (err) throw err; // not connected!
      con.query(sql,params,(err, r) => {
        con.release();
        //if(!cb) {return;}
        if (err) {
          console.log("error: ", err);
          cb && cb(new Error('SQL Error: ' + err));
        }else{
          console.log("inserted record: ", { id:  r.insertId});
          cb && cb(null, { id: r.insertId, ...params });
        }
      });
    });
}
exports.getFromDht = function(url, cb)
{ 
    (async () => {
    try {
        //! const dht = await got('http://192.168.1.126/json')
        var j = JSON.parse(body);
        if(j.dht && j.dht.hum <= 100 && j.dht.hum >= 0){
          exports.insert(0, "A23_DHT", dht.body, cb);
        }else {
          console.log("Skip! Got invalid data from DHT: " + dht);
        }
      } catch (ex) {
        console.log("DHT exception:" + ex);
        cb && cb(new Error('SQL Error: ' + ex));
      }
    })();
};