import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
/**
 * @author: GRUPO SC055
 *Pedro Neves fc46430
 *João Anastácio fc43284
 *Ricardo Calçado fc46382
 */
public class PhotoShare extends PhotoShareSkell {

	static final String Rep = "Repositorio" + File.separator + "client" + File.separator;
	/**
	 * Main of PhotoShare.java
	 * @param args argumentos a serem passados, neste caso, userId, pwd, e porto
	 * @throws IOException
	 * @throws ClassNotFoundException
	 * @throws ParseException
	 */
	public static void main(String[] args) throws IOException, ClassNotFoundException, ParseException {
		PhotoShare client = new PhotoShare();
		if (!criaRepLocal(args[0]))
			System.err.println("Client Rep already created.\n");
		else {
			File seg = new File(Rep + args[0] + File.separator + "seguidoPor.txt");
			seg.createNewFile();
			File seg2 = new File(Rep + args[0] + File.separator + "vaiSeguir.txt");
			seg2.createNewFile();
			System.out.println("Rep sucessfully created.");
		}

		client.runClient(args);
	}
	/**
	 * Serve para correr o cliente, eh nele onde se vai enviar ao servidor
	 * quais as operacoes que sao preciso ser feitas
	 * @param args argumentos que sao passados pelo user,
	 * @throws IOException
	 * @throws ClassNotFoundException
	 * @throws ParseException
	 */
	private void runClient(String[] args) throws IOException, ClassNotFoundException, ParseException {
		Socket socket = null;

		if (args[1].equals("-p"))
			socket = connect(args[3]);
		else
			socket = connect(args[1]);

		ObjectOutputStream outStream = new ObjectOutputStream(socket.getOutputStream());
		ObjectInputStream inStream = new ObjectInputStream(socket.getInputStream());

		outStream.writeObject(args[0]); // username
		String[] options = null;

		if (args[1].equals("-p")) {
			outStream.writeObject(args[2]); // pass
			options = args;
		} else {
			Scanner sc = new Scanner(System.in);
			System.out.println("Insert Password.");
			String pass = sc.nextLine();
			outStream.writeObject(pass);
			sc.close();
			options = new String[args.length + 2];
			options[2] = "-p";
			options[3] = pass;
			int j = 0;
			for (int i = 0; i < options.length; i++) {
				if (i != 2 && i != 3)
					options[i] = args[j];

				j++;
			}
		}

		if ((boolean) inStream.readObject())
			System.out.println("User logged in / registered.\n");

		String str = "";
		Scanner sc = new Scanner(System.in);
		while (!str.equals("Q")) {
			System.out.println("\n Introduza opcoes: "
					+ "[ -a <photos> | -l <userId>  | -i <userId> <photo> | -g <userId> |    \r\n"
					+ "       -c <comment> <userId> <photo> | -L <userId> <photo> |  \r\n"
					+ "       -D <userId> <photo> | -f <followUserIds>  | -r <followUserIds> ] ");
			str = sc.nextLine();
			boolean c = false;
			boolean ip = false;
			boolean g = false;
			String[] option = str.split(" ");
			switch (option[0]) {
			case "-a":
				int a = 1;
				while (a < option.length) {
					System.out.println("Opcao: -a <" + option[a] + ">.\n");
					String scin = option[a];
					// foto no cliente?
					File temp = new File(Rep + args[0] + File.separator + scin);
					// se esta no cliente
					if (temp.exists()) {
						outStream.writeObject("-a");
						outStream.writeObject(scin);
						sendFile(outStream, args[0], scin);
						sendFile(outStream, args[0], scin + "-comments.txt");
						sendFile(outStream, args[0], scin + "-likes.txt");
					} else {
						System.err.println("Photo not found" + scin);

					}
					a++;
				}

				break;
			case "-l":
				System.out.println("Opcao: -l <" + option[1] + ">.\n");
				String userId = option[1];
				c = true;
				// próprio user
				if (option[1].equals(args[0])) {
					outStream.writeObject("-l");
					outStream.writeObject(args[0]);
				} else {// outros users
					File verfUser = new File(Rep + userId + File.separator + "seguidoPor.txt");
					BufferedReader bufVerfUser = new BufferedReader(new FileReader(verfUser));
					String line = null;
					boolean found = false;
					while ((line = bufVerfUser.readLine()) != null && !found) {
						if (line.equals(args[0])) {
							found = true;
							outStream.writeObject("-l");
							outStream.writeObject(userId);

						}
					}
					if (found == false) {
						System.err.println("Client doesn't follow " + option[1]);
					}
					outStream.flush();
				}
				break;
			case "-i":
				ip = true;
				System.out.println("Opcao: -i <" + option[1] + "><" + option[2] + ">.\n");
				String userId1 = option[1];
				String foto = option[2];
				// próprio user
				if (option[1].equals(args[0])) {
					outStream.writeObject("-i");
					outStream.writeObject(userId1);
					outStream.writeObject(foto);
				} else {// outros users
					File verfUser = new File(Rep + userId1 + File.separator + "seguidoPor.txt");
					BufferedReader bufVerfUser = new BufferedReader(new FileReader(verfUser));
					String line = null;
					boolean found1 = false;
					while ((line = bufVerfUser.readLine()) != null && !found1) {
						if (line.equals(args[0])) {
							found1 = true;
							outStream.writeObject("-i");
							outStream.writeObject(userId1);
							outStream.writeObject(option[2]);
						}
					}
					if (found1 == false) {
						System.err.println("Client doesn't follow " + option[1]);
					}
				}
				break;
			case "-g":
				g = true;
				System.out.println("Opcao: -g <" + option[1] + ">.\n");

				File verfUser = new File(Rep + option[1] + File.separator + "seguidoPor.txt");
				BufferedReader bufVerfUser = new BufferedReader(new FileReader(verfUser));
				String line = null;
				boolean found2 = false;
				while ((line = bufVerfUser.readLine()) != null && !found2) {
					if (line.equals(args[0])) {
						found2=true;
						outStream.writeObject("-g");
						outStream.writeObject(option[1]);
						break;
					}
				}
				if (found2 == false) {
					System.err.println("Client doesn't follow " + option[1]);
				}

				break;
			case "-c":
				int size = option.length - 1;
				System.out.println("Opcao: -c <" + "Comment" + "><" + option[size-1] + "><" + option[size] + ">.\n");
				File verfUser1 = new File(Rep + option[size - 1] + File.separator + "seguidoPor.txt");
				BufferedReader bufVerfUser1 = new BufferedReader(new FileReader(verfUser1));
				String line1 = null;
				boolean found3 = false;
				while ((line1 = bufVerfUser1.readLine()) != null && !found3) {
					if (line1.equals(args[0])) {
						found3=true;
						outStream.writeObject("-c");
						outStream.writeObject(Integer.toString(size - 1));
						for (int i = 1; i < size - 1; i++) {
							outStream.writeObject(option[i]);
						}
						outStream.writeObject(option[size - 1]);
						outStream.writeObject(option[size]);
						break;
					}
				}
				if (found3 == false) {
					System.err.println("Client doesn't follow " + option[size-1]);
				}
				break;
			case "-L":
				System.out.println("Opcao: -L <" + option[1] + "><" + option[2] + ">.\n");
				File verfUser11 = new File(Rep + option[1] + File.separator + "seguidoPor.txt");
				BufferedReader bufVerfUser11 = new BufferedReader(new FileReader(verfUser11));
				String line11 = null;
				boolean found4=false;
				while ((line11 = bufVerfUser11.readLine()) != null && !found4) {
					if (line11.equals(args[0])) {
						found4=true;
						outStream.writeObject("-L");
						outStream.writeObject(option[1]);
						outStream.writeObject(option[2]);
						break;
					}
				}
				if (found4 == false) {
					System.err.println("Client doesn't follow " + option[1]);
				}
				break;
			case "-D":
				System.out.println("Opcao: -D <" + option[1] + "><" + option[2] + ">.\n");
				File verfUser111 = new File(Rep + option[1] + File.separator + "seguidoPor.txt");
				BufferedReader bufVerfUser111 = new BufferedReader(new FileReader(verfUser111));
				String line111 = null;
				boolean found5=false;
				while ((line111 = bufVerfUser111.readLine()) != null && !found5) {
					if (line111.equals(args[0])) {
						found5=true;
						outStream.writeObject("-D");
						outStream.writeObject(option[1]);
						outStream.writeObject(option[2]);
						break;
					}
				}
				if (found5 == false) {
					System.err.println("Client doesn't follow " + option[1]);
				}
				break;
			case "-f":
				System.out.println("Opcao: -f <followUserIds>.\n");
				File verfUser1111 = new File(Rep + args[0] + File.separator + "seguidoPor.txt");
				BufferedReader bufVerfUser1111 = new BufferedReader(new FileReader(verfUser1111));
				BufferedWriter bufwrite = new BufferedWriter(new FileWriter(verfUser1111, true));
				boolean follows = false;
				String line1111 = null;

				int b = 1;

				while ((line1111 = bufVerfUser1111.readLine()) != null) {
					for (int i = 1; i < option.length; i++) {
						if (option[i].equals(line1111)) {
							System.err.println("User already follows you");
							follows = true;
						}
					}

				}
				while (b < option.length) {
					if (follows == false) {
						outStream.writeObject("-f");
						bufwrite.write(option[b]);
						bufwrite.newLine();
						outStream.writeObject(option[b]);

					}
					b++;
				}
				bufwrite.flush();
				bufwrite.close();
				break;
			case "-r":
				int f = 1;

				while (f < option.length) {
					System.out.println("Opcao: -f <followUserIds>.\n");
					File verfUser11111 = new File(Rep + args[0] + File.separator + "seguidoPor.txt");
					BufferedReader bufVerfUser11111 = new BufferedReader(new FileReader(verfUser11111));

					String line11111 = null;
					String temp = null;

					while ((line11111 = bufVerfUser11111.readLine()) != null) {

						if (option[f].equals(line11111)) {
							outStream.writeObject("-r");
							outStream.writeObject(option[f]);
							outStream.writeObject(Integer.toString(f));
							temp = line11111;
						}

					}
					f++;
					bufVerfUser11111.close();
					removeLineFromFile("seguidoPor.txt", args[0], temp);
				}

				break;

			}

			if (c == true) {
				String tamanho = (String) inStream.readObject();
				for (int i = 0; i < Integer.parseInt(tamanho); i++) {
					System.out.println("foto: " + (String) inStream.readObject()+"\n");

					System.out.println("ultima data: " + (String) inStream.readObject()+"\n");
				}

			} else if (ip == true) {
				String tamanho = (String) inStream.readObject();
				String temp = null;

				for (int i = 0; i < Integer.parseInt(tamanho); i++) {
					temp = (String) inStream.readObject();

					System.out.println("Comment: " + temp);

				}
				String likes = (String) inStream.readObject();
				String dislikes = (String) inStream.readObject();
				System.out.println("Likes: " + Integer.parseInt(likes));
				System.out.println("Dislikes: " + Integer.parseInt(dislikes));
			} else {
				if (g == true) {
					String tamanho = (String) inStream.readObject();
					String tempora = null;
					for (int i = 0; i < Integer.parseInt(tamanho); i++) {
						tempora = (String) inStream.readObject();

						receiveFile(inStream, args[0], tempora);

					}
				}
			}
			outStream.flush();
		}

		sc.close();
		outStream.close();
		inStream.close();
		socket.close();
	}

}