const fs = require('fs')
const db = require("../models")

const Airport = db['Airport']
const Flight = db['Flight']

db.sequelize.sync()

fs.readFile(__dirname + '/../data/airports.json', 'utf-8', (error, data) => {
    if (error) {
        console.log(error)
        return
    }

    data = JSON.parse(data)
    Airport.findAll({attributes: ['icao_code', 'iata_code']}).then(results => {
        let icao_codes = []
        let iata_codes = []
        results.forEach(result => {
            if (result.icao_code)
                icao_codes.push(result.icao_code)
            if (result.iata_code)
                iata_codes.push(result.iata_code)
        })

        Airport.bulkCreate(data['response'].filter(airport => !icao_codes.includes(airport.icao_code)
            && !iata_codes.includes(airport.iata_code))).then()
    }).then(() => {
        Airport.findAll({attributes: ['icao_code']}).then(airports => {
            airports.forEach(airport => {
                fs.readFile(__dirname + `/../data/routes/${airport.icao_code}.json`, 'utf-8', (error, data) => {
                    if (error) {
                        console.log(error)
                        return
                    }

                    data = JSON.parse(data)
                    Flight.destroy({where: {dep_icao: airport.icao_code}}).then(() => {
                        Flight.bulkCreate(data['response']).then()
                    })
                })
            })
        })
    })
})