alcohol.scala

// Part 2 about Alcohol-Consumption Worldwide
//============================================



object CW6b {



import scala.io.Source
import scala.util._

val url_alcohol = 
  "https://raw.githubusercontent.com/fivethirtyeight/data/master/alcohol-consumption/drinks.csv"

val file_population = 
  "population.csv"




def get_csv_page(url: String) : List[String] = {

  val content = Source.fromURL(url).mkString
  content.split("\n").toList



}




def get_csv_file(file: String) : List[String] = {


  val content = Source.fromFile(file).mkString
  content.split("\n").toList

}



//(2) Complete the functions that process the csv-lists. For
//    process_alcs extract the country name (as String) and the 
//    pure alcohol consumption (as Double). For process_pops
//    generate a Map of Strings (country names) to Long numbers 
//    (population sizes). 


def process_alcs(lines: List[String]) : List[(String, Double)] = {


  val newList = for(i<- lines) yield {
    (i.split(",").take(1).mkString, i.split(",").takeRight(1).mkString.toDouble)
  }

    newList
}


def process_pops(lines: List[String]) : Map[String, Long] = {

  val newList = for(i<- lines) yield {
    (i.split(",").take(1).mkString, i.split(",").takeRight(1).mkString.toLong)
  }

  val newMap = newList.toMap

  newMap
}



//(3) Calculate for each country the overall alcohol_consumption using
//    the data from the alcohol list and the population sizes list. You
//    should only include countries on the alcohol list that are also
//    on the population sizes list with the exact same name. Note that
//    the spelling of some names in the alcohol list differs from the
//    population sizes list. You can ignore entries where the names differ. 
//    Sort the resulting list according to the country with the highest alcohol 
//    consumption to the country with the lowest alcohol consumption.

//def sorted_country_consumption() : List[(String, Long)] = ...


//   Calculate the world consumption of pure alcohol of all countries, which 
//   should be the first element in the tuple below. The second element is
//   the overall consumption of the first n countries in the sorted list
//   from above; and finally the double should be the percentage of the 
//   first n countries drinking from the the world consumption of alcohol.          

//def percentage(n: Int) : (Long, Long, Double) = ...

}