import groovy.json.JsonSlurper
import java.text.DecimalFormat

void Zadanie1()
{
	def bigProjectsOutput = new File('ProjektyDuze.txt')
	bigProjectsOutput.text = ''
	def programmersOutput = new File('Programisci.txt')
	programmersOutput.text = ''
	
	def input = new File('Projekty.txt')
	
	def programmersLanguages = [:].withDefault { [] }
	input.each {
		if (it.size() == 0)
			return

		def values = it.split("\t")
		def language = values[0]
		def programmers = values.drop(1)
		
		if (programmers.size() > 3)
			bigProjectsOutput << "$language\n"

		programmers.each {
			programmersLanguages[it] += language
		}
	}
	
	programmersLanguages.each { programmer, languages ->
		programmersOutput << programmer + "\t" + languages.join("\t") + "\n" 
	}
}

BigDecimal getCurrentPlnToEuroRate()
{
	def euroToPln = (new JsonSlurper()).parse(new URL('http://api.nbp.pl/api/exchangerates/rates/A/EUR?format=json'))["rates"][0]["mid"]
	return 1 / euroToPln
}

void Zadanie2()
{
	def plnToEurRate = getCurrentPlnToEuroRate()
	def decimalFormatter = new DecimalFormat("###,##0.00")
	
	def input = new File('MenuPl.txt')
	def output = new File('MenuEur.txt')
	
	output.text = ''
	input.each {
		if (it.size() == 0)
			return
			
		def values = it.split(" ")
		def price = values[1] as BigDecimal
		output << values[0] + " " + decimalFormatter.format(price * plnToEurRate) + "\n"
	}
}

void Zadanie3()
{
	def dir = new File('pliki_html')
	def i = 1
	dir.eachFileRecurse {
		if (it.isFile() && it.name.endsWith('.html'))
			println i++ + " " + it
	}
}

Zadanie1()
Zadanie2()
Zadanie3()