import java.awt.Desktop;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

public class Packliste {
	private final static String FILETYPE = ".md";
	
	private static boolean hotel;
	private static boolean camping;
	private static boolean camera;
	private static boolean cellphone;
	private static boolean beach;
	private static boolean summer;
	private static boolean hiking;
	private static boolean lightweight;
	private static boolean books;
	private static int days;
	private static Scanner s = new Scanner(System.in);
	private static String output;
	
	public static void main(String[] args){
		output = "";
		System.out.println("Willkommen beim Packlisten-Konfigurator!");
		days = askIntQuestion("Wie lange soll deine Reise gehen (in Tagen)?");		
		summer = askYnQuestion("Wird es ein Sommerurlaub?", true);
		hotel = askYnQuestion("Bist du im Hotel?", true);
		if(!hotel){
			camping = askYnQuestion("Gehst du campen?", true);
		}
		hiking = askYnQuestion("Gehst du wandern?", true);
		camera = askYnQuestion("Möchtest du eine Kamera mitnehmen?", true);
		cellphone = askYnQuestion("Möchtest du dein Handy mitnehmen?", true);
		beach = askYnQuestion("Bist du am Meer oder einem Swimming-Pool?", true);
		
		lightweight = !askYnQuestion("Reist du mit wenig Gepäck?", false);
		
		books = !askYnQuestion("Möchtest du im Urlaub Bücher lesen?", false);
		
		//if(books && lightweight) System.out.println("Sorry, aber bei wenig Gepäck muss irgendwas zurückbleiben...");
		
		addToOutput();
		writeToFile();
	}
	
	private static boolean askYnQuestion(String question, boolean yesAsDefault){
		if(yesAsDefault) question += " [J/n] ";
		else question += " [j/N] ";
		System.out.print(question);
		String tmp = s.nextLine();
		tmp = tmp.toLowerCase();
		boolean trueAnswer = tmp.equals("");
		if(trueAnswer) return true;
		if(yesAsDefault) trueAnswer = tmp.equals("j");
		else trueAnswer = tmp.equals("n");
		return trueAnswer;
	}
	
	private static String askStringQuestion(String question){
		System.out.print(question + " ");
		return s.nextLine();
	}
	
	private static int askIntQuestion(String question){
		return Integer.parseInt(askStringQuestion(question));
	}
	
	private static void addToOutput(){
		int packDays;
		if(lightweight) packDays = (int) Math.ceil(days / 2.0); //TODO ;)
		else packDays = days;
		
		int foo = (int) Math.ceil(days / 3.0);
		if(foo == 0) foo = 1;
		
		//Klamotten
		output += "# Klamotten\n";
		output += "- " + packDays + " T-Shirts\n";
		output += "- " + packDays + " Socken\n";
		output += "- 1 Schuhe\n";
		output += "- " + packDays + " Unterhosen\n";
		if(summer){
			output += "- 1 Hose\n";
			output += "- " + foo + " kurze Hosen\n";
		} else {
			output += "- " + foo + " Hosen\n";
			output += "- " + foo + " Pullover\n";	
		}
		output += "- 1 Regenjacke\n";
		
		if(beach){
			output += "- Badehose\n";
			output += "- Strand-Handtuch\n";
			output += "- *Schnorchel-Set*\n";
			output += "- *Badeschuhe*\n";
		}

		output += "\n";
		
		//Hygiene-Kram
		output += "# Hygiene-Kram\n";
		output += "- 1 Zahnbürste\n";
		output += "- 1 Zahnpasta\n";
		output += "- 1 Deo\n";
		output += "- 1 Duschgel & Shampoo\n";
		output += "- 1 Erste-Hilfe-Tasche\n";
		
		output += "\n";
		
		//Camping
		if(camping){
			output += "# Camping\n";
			output += "- 1 Zelt\n";
			output += "- 1 Schlafsack\n";
			output += "- 1 Isomatte\n";
			output += "- 1 Stirnlampe\n";
			output += "- 1 Kocher\n";
			output += "  - 1 Gas/Benzin/Spiritus\n";
			output += "- 1 Teller\n";
			output += "- 1 Besteck\n";
			output += "- 1 Tasse\n";
			output += "- 1 Becher\n";
			output += "- 1 (Microfaser)-Handtuch\n";
		} else if(hotel){
			//TODO
		}
		
		if(hiking){
			output += "- Wanderkarten\n";
			output += "- Wanderschuhe\n";
		}
		
		output += "\n";
		
		if(hasEntertainment()){
			output += "# Unterhaltung\n";			
			if(books){
				output += "- Bücher\n";
			}
			output += "\n";
		}
		
		if(hasElectronics()){
			output += "# Elektronik\n";			
			if(camera){
				output += "## Kamera\n";
				output += "- Kamera\n";
				output += "  - Objektive\n";
				if(!lightweight) output += "  - Stativ\n";
				if(camera) output += "- *Action-Kamera*\n";
				output += "- Ladekabel\n";
				output += "- Akkus\n";
				output += "- Speicherkarten\n";
			}
			
			if(cellphone){
				output += "## Handy\n";
				output += "- Ladekabel\n";
			}
			output += "\n";
		}
	}
	
	private static void writeToFile(){
		String filename = "";
		
		boolean ownName = !askYnQuestion("Möchtest du deiner Liste einen Namen geben?", false);
		if(ownName){
			filename = askStringQuestion("Bitte Dateinamen eingeben:");
		} else {
			SimpleDateFormat sdf = new SimpleDateFormat("YYYY-MM-dd-HHmmss");
			filename = "packliste-" + sdf.format(new Date());
		}
		filename += FILETYPE;
		
		PrintWriter writer = null;
		File file = new File(filename);
		try {
			writer = new PrintWriter(file, "UTF-8");
		} catch (FileNotFoundException e) {
			//TODO
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		
		if(output.endsWith("\n\n")) output = output.substring(0, output.length()-2);
		
		writer.print(output);
		writer.close();
		
		boolean openNow = !askYnQuestion("Möchtest du die Packliste jetzt öffnen?", false);
		if(openNow){
			Desktop d = Desktop.getDesktop();
			try {
				d.open(file);
			} catch (IOException e) {
				//TODO Wann kann das passieren?
				e.printStackTrace();
			}
		}
		System.out.println("Erhol dich gut in deinem " + days + " tägigen Urlaub und gute Reise!");
	}
	
	private static boolean hasEntertainment(){
		return books;
	}
	
	private static boolean hasElectronics(){
		return camera || cellphone;
	}
}