iran-cities/index.js

The most accurate database of city, county and province names of Iran

const fs = require('fs');
const jsonfile = require('jsonfile');
const path = require('path');

const csvPath = {
   city: '/csv/city.csv',
   county: '/csv/county.csv',
   province: '/csv/province.csv'
};

const jsonPath = {
   city: '/json/city.json',
   county: '/json/county.json',
   province: '/json/province.json'
};

let data = {
   city: [],
   county: [],
   province: []
};

let csvToJsonCity = () => {
   let lineReader = require('readline').createInterface({
      input: require('fs').createReadStream(path.resolve(__dirname + csvPath.city))
   });
   lineReader.on('line', (line) => {
      let splitLine = line.split(',');
      let obj = {
         id: splitLine[0],
         province_id: splitLine[1],
         county_id: splitLine[2],
         name: splitLine[3]
      };
      data.city.push(obj);
   }).on('close', () => {
      if (!fs.existsSync(path.resolve(__dirname + jsonPath.city))) {
         jsonfile.writeFileSync(path.resolve(__dirname + jsonPath.city), data.city, { flag: 'a' });
      }
   });
};

let csvToJsonCounty = () => {
   let lineReader = require('readline').createInterface({
      input: require('fs').createReadStream(path.resolve(__dirname + csvPath.county))
   });
   lineReader.on('line', (line) => {
      let splitLine = line.split(',');
      let obj = {
         id: splitLine[0],
         province_id: splitLine[1],
         name: splitLine[2]
      };
      data.county.push(obj);
   }).on('close', () => {
      if (!fs.existsSync(path.resolve(__dirname + jsonPath.county))) {
         jsonfile.writeFileSync(path.resolve(__dirname + jsonPath.county), data.county, { flag: 'a' });
      }
   });
};

let csvToJsonProvince = () => {
   let lineReader = require('readline').createInterface({
      input: require('fs').createReadStream(path.resolve(__dirname + csvPath.province))
   });
   lineReader.on('line', (line) => {
      let splitLine = line.split(',');
      let obj = {
         id: splitLine[0],
         name: splitLine[1]
      };
      data.province.push(obj);
   }).on('close', () => {
      if (!fs.existsSync(path.resolve(__dirname + jsonPath.province))) {
         jsonfile.writeFileSync(path.resolve(__dirname + jsonPath.province), data.province, { flag: 'a' });
      }
   });
};

exports.convertToJson = () => {
   csvToJsonCity();
   csvToJsonCounty();
   csvToJsonProvince();
};

exports.getCity = () => {
   if (fs.existsSync(path.resolve(__dirname + jsonPath.city))) {
      return jsonfile.readFileSync(path.resolve(__dirname + jsonPath.city));
   }
};

exports.getCounty = () => {
   if (fs.existsSync(path.resolve(__dirname + jsonPath.county))) {
      return jsonfile.readFileSync(path.resolve(__dirname + jsonPath.county));
   }
};

exports.getProvince = () => {
   if (fs.existsSync(path.resolve(__dirname + jsonPath.province))) {
      return jsonfile.readFileSync(path.resolve(__dirname + jsonPath.province));
   }
};