// Yazzy Latif
// 07/15/2020
// CSE 142
// TA: Grace Hopper
// Election Good Example

// A program to read in the number of votes each of two candidates received
//   in a number of precincts, then compute the winner of the election.
//

/* DEVELOPMENT NOTES:
((Note: this is not something you should include in your own programs; this is included here to aid
         in your understanding and to provide additional context for the program.))
This version of the program has added some structure by defining methods,
  but still has a lot of redundancy. In addition, the program uses chaining,
  which is considered poor style. Note how each method simply calls the next,
  with control never returning to main until the end of the program.
*/
import java.util.*;

public class ElectionChained {
   public static final int NUM_VOTERS = 807;    // total number of eligible voters

   public static void main(String[] args) {
      Scanner console = new Scanner(System.in);
   
      intro();
      
      pizzaParty(console);
   }
   
   // Prints out an introduction to the program.
   public static void intro() {
      System.out.println("This program reads in data for two candidates");
      System.out.println("and computes the result of an election");
      System.out.println();   
   }
   
   // Reads in and computes the pizza party candidate's total votes.
   //
   // Scanner console - the Scanner to use for input
   public static void pizzaParty(Scanner console) {
      System.out.println("Enter Pizza Party candidate's totals:");
      System.out.print("How many precincts? ");
      int numPrecincts = console.nextInt();
      int pizza = 0;
      for (int i = 1; i <= numPrecincts; i++) {
         System.out.print("   Votes in next precinct? ");
         int votes = console.nextInt();
         pizza += votes;
      }
      System.out.println();
      pajamaParty(console, pizza);   
   }
   
   // Reads in and computes the pajama party candidate's total votes.
   //
   // Scanner console - the Scanner to use for input   
   // int pizza - the number of votes the pizza party candidate received
   public static void pajamaParty(Scanner console, int pizza) {
      System.out.println("Enter Pajama Party candidate's totals:");
      System.out.print("How many precincts? ");
      int numPrecincts = console.nextInt();
      int pajama = 0;
      for (int i = 1; i <= numPrecincts; i++) {
         System.out.print("   Votes in next precinct? ");
         int votes = console.nextInt();
         pajama += votes;
      }
      System.out.println();
      reportResults(console, pizza, pajama);   
   }
   
   // Computes and prints the final results of the election.
   //
   // Scanner console - the Scanner to use for input
   // int firstVotes - the number of votes the first candidate received
   // int secondVotes - the number of votes the second candidate received   
   public static void reportResults(Scanner console, int firstVotes, int secondVotes) {
      int totalVotes = firstVotes + secondVotes;
      double pct1 = 100.0 * firstVotes / totalVotes;
      double pct2 = 100.0 * secondVotes / totalVotes;

      if (pct1 > pct2) {
         System.out.println("Pizza Party received " + round2(pct1) + "% of the votes cast");
         System.out.println("Pajama Party received " + round2(pct2) + "% of the votes cast");
         System.out.println("Pizza Party wins!");
         double turnoutPct = 100.0 * totalVotes / NUM_VOTERS;
         System.out.println("Turnout was " + round2(turnoutPct) + "%");   
      } else if (pct2 > pct1) {
         System.out.println("Pizza Party received " + round2(pct1) + "% of the votes cast");
         System.out.println("Pajama Party received " + round2(pct2) + "% of the votes cast");
         System.out.println("Pajama Party wins!");
         double turnoutPct = 100.0 * totalVotes / NUM_VOTERS;
         System.out.println("Turnout was " + round2(turnoutPct) + "%");   
      } else {
         System.out.println("Pizza Party received " + round2(pct1) + "% of the votes cast");
         System.out.println("Pajama Party received " + round2(pct2) + "% of the votes cast");
         System.out.println("It's a tie!");
         double turnoutPct = 100.0 * totalVotes / NUM_VOTERS;
         System.out.println("Turnout was " + round2(turnoutPct) + "%");   
      }      
   }

   // Returns the given number rounded to two decimal places.
   //
   // double num - the number to round
   public static double round2(double num) {
      return Math.round(num * 100.0) / 100.0;
   }
}