package fr.xephi.authme.api;

import fr.xephi.authme.AuthMe;
import fr.xephi.authme.cache.auth.PlayerAuth;
import fr.xephi.authme.cache.auth.PlayerCache;
import fr.xephi.authme.security.PasswordSecurity;
import fr.xephi.authme.settings.Settings;
import fr.xephi.authme.util.Utils;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Server;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;

import java.security.NoSuchAlgorithmException;

/**
 */
public class NewAPI {

    public static NewAPI singleton;
    public final AuthMe plugin;

    /**
     * Constructor for NewAPI.
     *
     * @param plugin AuthMe
     */
    public NewAPI(AuthMe plugin) {
        this.plugin = plugin;
    }

    /**
     * Constructor for NewAPI.
     *
     * @param server Server
     */
    public NewAPI(Server server) {
        this.plugin = (AuthMe) server.getPluginManager().getPlugin("AuthMe");
    }

    /**
     * Hook into AuthMe
     *
     * @return AuthMe plugin
     */
    public static NewAPI getInstance() {
        if (singleton != null)
            return singleton;
        Plugin p = Bukkit.getServer().getPluginManager().getPlugin("AuthMe");
        if (p == null || !(p instanceof AuthMe)) {
            return null;
        }
        AuthMe authme = (AuthMe) p;
        singleton = (new NewAPI(authme));
        return singleton;
    }

    /**
     * Method getPlugin.
     *
     * @return AuthMe
     */
    public AuthMe getPlugin() {
        return plugin;
    }

    /**
     * @param player
     *
     * @return true if player is authenticate
     */
    public boolean isAuthenticated(Player player) {
        return PlayerCache.getInstance().isAuthenticated(player.getName());
    }

    /**
     * @param player
     *
     * @return true if player is a npc
     */
    public boolean isNPC(Player player) {
        return Utils.isNPC(player);
    }

    /**
     * @param player
     *
     * @return true if the player is unrestricted
     */
    public boolean isUnrestricted(Player player) {
        return Utils.isUnrestricted(player);
    }

    /**
     * Method getLastLocation.
     *
     * @param player Player
     *
     * @return Location
     */
    public Location getLastLocation(Player player) {
        try {
            PlayerAuth auth = PlayerCache.getInstance().getAuth(player.getName().toLowerCase());

            if (auth != null) {
                return new Location(Bukkit.getWorld(auth.getWorld()), auth.getQuitLocX(), auth.getQuitLocY(), auth.getQuitLocZ());
            } else {
                return null;
            }

        } catch (NullPointerException ex) {
            return null;
        }
    }

    /**
     * @param playerName
     *
     * @return true if player is registered
     */
    public boolean isRegistered(String playerName) {
        String player = playerName.toLowerCase();
        return plugin.database.isAuthAvailable(player);
    }

    /**
     * @param playerName      String
     * @param passwordToCheck String
     *
     * @return true if the password is correct , false else
     */
    public boolean checkPassword(String playerName, String passwordToCheck) {
        if (!isRegistered(playerName))
            return false;
        String player = playerName.toLowerCase();
        PlayerAuth auth = plugin.database.getAuth(player);
        try {
            return PasswordSecurity.comparePasswordWithHash(passwordToCheck, auth.getHash(), playerName);
        } catch (NoSuchAlgorithmException e) {
            return false;
        }
    }

    /**
     * Register a player
     *
     * @param playerName String
     * @param password   String
     *
     * @return true if the player is register correctly
     */
    public boolean registerPlayer(String playerName, String password) {
        try {
            String name = playerName.toLowerCase();
            String hash = PasswordSecurity.getHash(Settings.getPasswordHash, password, name);
            if (isRegistered(name)) {
                return false;
            }
            PlayerAuth auth = new PlayerAuth(name, hash, "192.168.0.1", 0, "your@email.com", playerName);
            return plugin.database.saveAuth(auth);
        } catch (NoSuchAlgorithmException ex) {
            return false;
        }
    }

    /**
     * Force a player to login
     *
     * @param player *            player
     */
    public void forceLogin(Player player) {
        plugin.management.performLogin(player, "dontneed", true);
    }

    /**
     * Force a player to logout
     *
     * @param player * 			player
     */
    public void forceLogout(Player player) {
        plugin.management.performLogout(player);
    }

    /**
     * Force a player to register
     *
     * @param player   * 			player
     * @param password String
     */
    public void forceRegister(Player player, String password) {
        plugin.management.performRegister(player, password, null);
    }

    /**
     * Force a player to unregister
     *
     * @param player * 			player
     */
    public void forceUnregister(Player player) {
        plugin.management.performUnregister(player, "", true);
    }
}