import 'colors'
import cron from 'node-schedule'
import { loadByPath } from './providers/cryptocompare'

//import fetch from 'node-fetch'
//import cc from 'cryptocompare'
import fs from 'fs-extra'
//global.fetch = fetch

import config from './config.js'

const timeFrames = '1 5 15 30 1H 2H 4H 1D 2D 1W 1M'.split(' ')
const timeFramesMin = '1 1H 1D'.split(' ')
const timeFrameAggregates = { '': 1, 'H': 1, 'D': 1, 'W': 7, 'M': 30 }
const timeFrameMinutes = { '': 1, 'H': 60, 'D': 60*24, 'W': 60*24*7, 'M': 60*24*30 }

const json2csv = list=> list.map( p=> [p.time, p.close, p.high, p.low, p.open, p.volumefrom, p.volumeto].join() ).join('\n')
const csv2json = csv=> csv.split('\n')
			.map( line=> {
				let v = line.split(',')
				return { time: v[0], close: v[1], high: v[2], low: v[3], open: v[4], volumeFrom: v[5], volumeTo:  v[6] }
			})
const log = (...args)=> obj=> ( console.log( ...args, obj ), obj )

const ccfs2colors = ccfs=> {
	let [ exchange, fsym, tsym, period, start, end = '' ] = ccfs.split('/')
	, str = exchange.grey + '/'
	str += fsym.cyan + '/'
	str += tsym.blue + '/'
	str += period ? period.magenta + '/' : ''
	str += start ? start.yellow + '/' : ''
	str += end ? end.yellow + '/' : ''
	return str
}


function ccfs2file( ccfs )
{
	let start, end, ccPath = ccfs.split('/')
	return loadByPath( ccfs )
//	return fs.readFile( `${config.dataDir}/${ccfs}-1279324800-1555545600.csv`, 'utf8' ).then( csv2json )
		.then( data=> (ccPath[4] = data[0].time, ccPath[5] = data[data.length-1].time, data) )
		.then( json2csv )
		.then( csv=> {
			ccPath[4] = `${ccPath[4]}-${ccPath[5]}`
			ccPath = ccPath.slice(0,5)
			let file = `${config.dataDir}/${ccPath.join('/')}.csv`
			fs.outputFile( file, csv )
			return file
		})
}

/*
ccfs2file( 'CCCAGG/BTC/USD/1' )
ccfs2file( 'CCCAGG/BTC/USD/15' )
ccfs2file( 'CCCAGG/BTC/USD/1H' )
ccfs2file( 'CCCAGG/BTC/USD/4H' )
ccfs2file( 'CCCAGG/BTC/USD/1D' )
ccfs2file( 'CCCAGG/BTC/USD/1W' )
ccfs2file( 'CCCAGG/BTC/USD/1M' )
*/

//cc.rateLimit().then( console.log )

export default function main( ccfs )
{
	var job = cron.scheduleJob('*/1 * * * *', ()=>  console.log('The answer to life, the universe, and everything! at', new Date) )
}

// esm cryptoSaver:backfill CCCAGG/BTC/USD[[[/1D]/24567788976543]/4578998765]
export function backfill({ 0:ccfs })
{
	let ccPath = ccfs.split('/')
	,	[ exchange, fsym, tsym, period, start, end = '' ] = ccPath

	if( ccPath.length == 3 ) // all timeFrames
	{
		console.log( `${ccfs2colors(ccfs)} >Backfilling of all time frames of ${fsym.cyan}/${tsym.blue} on ${exchange.grey} exchange...` )
		timeFrames
			.map( tf=> ccfs+'/'+tf )
			.map( ccfs=> backfill([ccfs]) )
	}
	if( ccPath.length == 4 ) // one timeFrame, recursive until error
	{
		console.log( `${ccfs2colors(ccfs)} >Backfilling the ${period.magenta} time frame of ${fsym.cyan}/${tsym.blue} on ${exchange.grey} exchange...` )
		ccfs2file( ccfs )
			.then( log('File saved:') )
			.then( file=> log(ccfs+'/'+file.match(/\/*?(\d*)-/)[1])()|| backfill([ ccfs+'/'+file.match(/\/*?(\d*)-/)[1] ]) )
	}
        if( ccPath.length == 5 ) // from date to maximum history
        {
		console.log( `${ccfs2colors(ccfs)} >Backfilling from ${start.yellow} to max history available of the ${period.magenta} time frame of ${fsym.cyan}/${tsym.blue} on ${exchange.grey} exchange...` )
		ccfs2file( ccfs )
			.then( log('File saved:') )
			.then( file=> {
				ccPath[4] = file.match(/\/*?(\d*)-/)[1]
				let next = ccPath.join('/')
				log('Next ccfs:')(next)
				return backfill( [next] )
			})
        }
        if( ccPath.length == 6 ) // from date to date
        {
                console.log( `${ccfs2colors(ccfs)} >Backfilling from ${start.yellow} to ${end.yellow} of the ${period.magenta} time frame of ${fsym.cyan}/${tsym.blue} on ${exchange.grey} exchange...` )
                ccfs2file( ccfs )
                        .then( log('File saved:') )
        }


}

export function validate({ 0:ccfs, aze })
{
	console.log( ccfs, aze )
}

export function compile({ 0:ccfs })
{
        console.log( `Compile `, ccfs )
}