import java.io.File;
import java.util.Scanner;
import java.util.Arrays;
import java.io.FileNotFoundException;

/**
 * Create methods for creating array of networks and reading in a file.
 *
 * Project 10
 * @author Logan Ridings
 * @version 11/15/2019
 */
public class WirelessNetworkList {

   private WirelessNetwork[] networkList;
   private String[] invalidRecords;
   /**
    * Constructor instansiates arrays with 0 size.
    */
   public WirelessNetworkList() {
      networkList = new WirelessNetwork[0];
      invalidRecords = new String[0];
   }
   /**
    * Get the array of networks.
    * @return a WirelessNetwork[]
    */
   public WirelessNetwork[] getWirelessNetworksArray() {
      return networkList;
   }
   /**
    * Get the array of invalid records.
    * @return a String[]
    */
   public String[] getInvalidRecordsArray() {
      return invalidRecords;
   }
   /**
    * Add a network to the array.
    * @param networkIn for adding a network
    */
   public void addWirelessNetwork(WirelessNetwork networkIn) {
      networkList = Arrays.copyOf(networkList, networkList.length + 1);
      networkList[networkList.length - 1] = networkIn;
   }
   /**
    * Adds an invalid record to the array.
    * @param invRecIn for adding string
    */
   public void addInvalidRecord(String invRecIn) {
      invalidRecords = Arrays.copyOf(invalidRecords, invalidRecords.length + 1);
      invalidRecords[invalidRecords.length - 1] = invRecIn;
   }
   /**
    * Reads in file delimited by commas.
    * @param fileNameIn for file
    * @throws FileNotFoundException for Scanner on file
    */
   public void readFile(String fileNameIn) throws FileNotFoundException {
      Scanner file = new Scanner(new File(fileNameIn));
      String name;
      double bandwidth, mfc, time, modemcost, datalimit;
      while (file.hasNext()) {
         Scanner line = new Scanner(file.nextLine());
         line.useDelimiter(",");
         switch (line.next().charAt(0)) {
            case 'W':
               name = line.next();
               bandwidth = Double.parseDouble(line.next());
               mfc = Double.parseDouble(line.next());
               modemcost = Double.parseDouble(line.next());
               WiFi wifi = new WiFi(name, bandwidth, mfc, modemcost);
               addWirelessNetwork(wifi);
               break;
            case 'C':
               name = line.next();
               bandwidth = Double.parseDouble(line.next());
               mfc = Double.parseDouble(line.next());
               time = Double.parseDouble(line.next());
               datalimit = Double.parseDouble(line.next());
               Cellular cell = new Cellular(name, bandwidth, mfc,
                     time, datalimit);
               addWirelessNetwork(cell);
               break;
            case 'L':
               name = line.next();
               bandwidth = Double.parseDouble(line.next());
               mfc = Double.parseDouble(line.next());
               time = Double.parseDouble(line.next());
               datalimit = Double.parseDouble(line.next());
               LTE lte = new LTE(name, bandwidth, mfc, time, datalimit);
               addWirelessNetwork(lte);
               break;
            case 'F':
               name = line.next();
               bandwidth = Double.parseDouble(line.next());
               mfc = Double.parseDouble(line.next());
               time = Double.parseDouble(line.next());
               datalimit = Double.parseDouble(line.next());
               FiveG g = new FiveG(name, bandwidth, mfc, time, datalimit);
               addWirelessNetwork(g);
               break;
            default:
               String badData = file.nextLine();
               addInvalidRecord(badData);
               break;
         }
      }
   }

   /**
    * Generates and returns report naturally ordered.
    * @return a String
    */
   public String generateReport() {
      String report = "-------------------------------\n"
         + "Monthly Wireless Network Report\n"
         + "-------------------------------\n";
      for (int i = 0; i < networkList.length; i++) {
         report += networkList[i].toString() + "\n\n";
      }
      return report;
   }
   /**
    * Generates alphabetized report.
    * @return a String
    */
   public String generateReportByName() {
      String report = "-----------------------------------------\n"
         + "Monthly Wireless Network Report (by Name)\n"
         + "-----------------------------------------\n";
      Arrays.sort(getWirelessNetworksArray());
      for (int i = 0; i < networkList.length; i++) {
         report += networkList[i].toString() + "\n\n";
      }
      return report;
   }
   /**
    * Generates report ordered by bandwidth (low to high).
    * @return a String
    */
   public String generateReportByBandwidth() {
      String report = "----------------------------------------------\n"
         + "Monthly Wireless Network Report (by Bandwidth)\n"
         + "----------------------------------------------\n";
      Arrays.sort(getWirelessNetworksArray(), new BandwidthComparator());
      for (int i = 0; i < networkList.length; i++) {
         report += networkList[i].toString() + "\n\n";
      }
      return report;
   }
   /**
    * Generate report ordered by monthly cost (high to low).
    * @return a String
    */
   public String generateReportByMonthlyCost() {
      String report = "-------------------------------------------------\n"
         + "Monthly Wireless Network Report (by Monthly Cost)\n"
         + "-------------------------------------------------\n";
      Arrays.sort(getWirelessNetworksArray(), new MonthlyCostComparator());
      for (int i = 0; i < networkList.length; i++) {
         report += networkList[i].toString() + "\n\n";
      }
      return report;
   }

   public String generateInvalidRecordsReport() {
      String report = "----------------------\n"
         + "Invalid Records Report\n"
         + "----------------------\n";
      for (int i = 0; i < invalidRecords.length; i++) {
         report += invalidRecords[i].toString() + "\n\n";
      }
      return report;
   }
}