/*
 * PlayerVaultsX
 * Copyright (C) 2013 Trent Hensler
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.drtshock.playervaults.vaultmanagement;

import com.drtshock.playervaults.PlayerVaults;
import com.drtshock.playervaults.translations.Lang;
import org.bukkit.Bukkit;
import org.bukkit.OfflinePlayer;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.ConfigurationSection;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.scheduler.BukkitRunnable;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;

/**
 * Class to handle vault operations with new UUIDs.
 */
@Deprecated
public class UUIDVaultManager {

    private static UUIDVaultManager instance;
    private final File directory = PlayerVaults.getInstance().getUuidData();
    private final Map<String, YamlConfiguration> cachedVaultFiles = new ConcurrentHashMap<>();

    public UUIDVaultManager() {
        instance = this;
    }

    /**
     * Get the instance of this class.
     *
     * @return - instance of this class.
     */
    public static UUIDVaultManager getInstance() {
        return instance;
    }

    /**
     * Saves the inventory to the specified player and vault number.
     *
     * @param inventory The inventory to be saved.
     * @param target    The player of whose file to save to.
     * @param number    The vault number.
     */
    public void saveVault(Inventory inventory, String target, int number) {
        int size = inventory.getSize();
        YamlConfiguration yaml = getPlayerVaultFile(target);
        if (size == 54) {
            yaml.set("vault" + number, null);
        } else {
            for (int x = 0; x < size; x++) {
                yaml.set("vault" + number + "." + x, null);
            }
        }
        List<String> list = Serialization.toString(inventory);
        String[] ser = list.toArray(new String[0]);
        for (int x = 0; x < ser.length; x++) {
            if (!ser[x].equalsIgnoreCase("null")) {
                yaml.set("vault" + number + "." + x, ser[x]);
            }
        }
        saveFileSync(target, yaml);
    }

    /**
     * Load the player's vault and return it.
     *
     * @param player The holder of the vault.
     * @param number The vault number.
     */
    public Inventory loadOwnVault(Player player, int number, int size) {
        if (size % 9 != 0) {
            size = PlayerVaults.getInstance().getDefaultVaultSize();
        }

        String title = Lang.VAULT_TITLE.toString().replace("%number", String.valueOf(number)).replace("%p", player.getName());
        VaultViewInfo info = new VaultViewInfo(player.getUniqueId().toString(), number);
        Inventory inv;
        if (PlayerVaults.getInstance().getOpenInventories().containsKey(info.toString())) {
            inv = PlayerVaults.getInstance().getOpenInventories().get(info.toString());
        } else {
            YamlConfiguration playerFile = getPlayerVaultFile(player.getUniqueId());
            if (playerFile.getConfigurationSection("vault" + number) == null) {
                VaultHolder vaultHolder = new VaultHolder(number);
                if (EconomyOperations.payToCreate(player)) {
                    inv = Bukkit.createInventory(vaultHolder, size, title);
                    vaultHolder.setInventory(inv);
                } else {
                    player.sendMessage(Lang.TITLE.toString() + Lang.INSUFFICIENT_FUNDS.toString());
                    return null;
                }
            } else {
                Inventory i = getInventory(playerFile, size, number, title);
                if (i == null) {
                    return null;
                } else {
                    inv = i;
                }
            }
            PlayerVaults.getInstance().getOpenInventories().put(info.toString(), inv);
        }

        return inv;
    }

    /**
     * Load the player's vault and return it.
     *
     * @param holder The holder of the vault.
     * @param number The vault number.
     */
    public Inventory loadOtherVault(String holder, int number, int size) {
        if (size % 9 != 0) {
            size = PlayerVaults.getInstance().getDefaultVaultSize();
        }
        String title = Lang.VAULT_TITLE.toString().replace("%number", String.valueOf(number)).replace("%p", PlayerVaults.getInstance().getNameIfPlayer(holder));
        VaultViewInfo info = new VaultViewInfo(holder, number);
        Inventory inv;
        if (PlayerVaults.getInstance().getOpenInventories().containsKey(info.toString())) {
            inv = PlayerVaults.getInstance().getOpenInventories().get(info.toString());
        } else {
            YamlConfiguration playerFile = getPlayerVaultFile(holder);
            Inventory i = getInventory(playerFile, size, number, title);
            if (i == null) {
                return null;
            } else {
                inv = i;
            }
            PlayerVaults.getInstance().getOpenInventories().put(info.toString(), inv);
        }
        return inv;
    }

    /**
     * Get an inventory from file. Returns null if the inventory doesn't exist. SHOULD ONLY BE USED INTERNALLY
     *
     * @param playerFile the YamlConfiguration file.
     * @param size       the size of the vault.
     * @param number     the vault number.
     * @return inventory if exists, otherwise null.
     */
    private Inventory getInventory(YamlConfiguration playerFile, int size, int number, String title) {
        List<String> data = new ArrayList<>();
        for (int x = 0; x < size; x++) {
            String line = playerFile.getString("vault" + number + "." + x);
            if (line != null) {
                data.add(line);
            } else {
                data.add("null");
            }
        }
        return Serialization.toInventory(data, number, size, title);
    }

    /**
     * Gets an inventory without storing references to it. Used for dropping a players inventories on death.
     *
     * @param holder The holder of the vault.
     * @param number The vault number.
     * @return The inventory of the specified holder and vault number.
     */
    public Inventory getVault(UUID holder, int number) {
        YamlConfiguration playerFile = getPlayerVaultFile(holder);
        ConfigurationSection section = playerFile.getConfigurationSection("vault" + number);
        int maxSize = VaultOperations.getMaxVaultSize(holder.toString());

        String title = Lang.VAULT_TITLE.toString().replace("%number", String.valueOf(number));

        if (section == null) {
            VaultHolder vaultHolder = new VaultHolder(number);
            Inventory inv = Bukkit.createInventory(vaultHolder, maxSize, title);
            vaultHolder.setInventory(inv);
            return inv;
        } else {
            List<String> data = new ArrayList<>();
            for (String s : section.getKeys(false)) {
                String value = section.getString(s);
                data.add(value);
            }

            return Serialization.toInventory(data, number, maxSize, title);
        }
    }

    /**
     * Checks if a vault exists.
     *
     * @param holder holder of the vault.
     * @param number vault number.
     * @return true if the vault file and vault number exist in that file, otherwise false.
     */
    public boolean vaultExists(String holder, int number) {
        File file = new File(directory, holder + ".yml");
        if (!file.exists()) {
            return false;
        }

        return getPlayerVaultFile(holder).contains("vault" + number);
    }

    /**
     * Deletes a players vault.
     *
     * @param sender The sender of whom to send messages to.
     * @param holder The vault holder.
     * @param number The vault number.
     * @throws IOException Uh oh!
     */
    public void deleteVault(CommandSender sender, final String holder, final int number) throws IOException {
        new BukkitRunnable() {
            @Override
            public void run() {
                File file = new File(directory, holder + ".yml");
                if (!file.exists()) {
                    return;
                }

                YamlConfiguration playerFile = YamlConfiguration.loadConfiguration(file);
                if (file.exists()) {
                    playerFile.set("vault" + number, null);
                    if (cachedVaultFiles.containsKey(holder)) {
                        cachedVaultFiles.put(holder, playerFile);
                    }
                    try {
                        playerFile.save(file);
                    } catch (IOException ignored) {
                    }
                }
            }
        }.runTaskAsynchronously(PlayerVaults.getInstance());

        OfflinePlayer player = Bukkit.getPlayer(holder);
        if (player != null) {
            if (sender.getName().equalsIgnoreCase(player.getName())) {
                sender.sendMessage(Lang.TITLE.toString() + Lang.DELETE_VAULT.toString().replace("%v", String.valueOf(number)));
            } else {
                sender.sendMessage(Lang.TITLE.toString() + Lang.DELETE_OTHER_VAULT.toString().replace("%v", String.valueOf(number)).replaceAll("%p", player.getName()));
            }
        }

        String uuid = sender instanceof Player ? ((Player) sender).getUniqueId().toString() : holder;
        PlayerVaults.getInstance().getOpenInventories().remove(new VaultViewInfo(holder, number).toString());
    }

    // Should only be run asynchronously
    public void cachePlayerVaultFile(String holder) {
        YamlConfiguration config = this.loadPlayerVaultFile(holder, false);
        if (config != null) {
            this.cachedVaultFiles.put(holder, config);
        }
    }

    public void removeCachedPlayerVaultFile(String holder) {
        cachedVaultFiles.remove(holder);
    }

    /**
     * Use below method for getting it via String.
     */
    @Deprecated
    public YamlConfiguration getPlayerVaultFile(UUID holder) {
        return getPlayerVaultFile(holder.toString());
    }

    /**
     * Get the holder's vault file. Create if doesn't exist.
     *
     * @param holder The vault holder.
     * @return The holder's vault config file.
     */
    public YamlConfiguration getPlayerVaultFile(String holder) {
        if (cachedVaultFiles.containsKey(holder)) {
            return cachedVaultFiles.get(holder);
        }
        return loadPlayerVaultFile(holder);
    }

    public YamlConfiguration loadPlayerVaultFile(String holder) {
        return this.loadPlayerVaultFile(holder, true);
    }

    public YamlConfiguration loadPlayerVaultFile(String uniqueId, boolean createIfNotFound) {
        if (!this.directory.exists()) {
            this.directory.mkdir();
        }

        File file = new File(this.directory, uniqueId + ".yml");
        if (!file.exists()) {
            if (createIfNotFound) {
                try {
                    file.createNewFile();
                } catch (IOException e) {
                    // Who cares?
                }
            } else {
                return null;
            }
        }

        return YamlConfiguration.loadConfiguration(file);
    }

    public void saveFileSync(final String holder, final YamlConfiguration yaml) {
        if (cachedVaultFiles.containsKey(holder)) {
            cachedVaultFiles.put(holder, yaml);
        }
        final boolean backups = PlayerVaults.getInstance().isBackupsEnabled();
        final File backupsFolder = PlayerVaults.getInstance().getBackupsFolder();
        final File file = new File(directory, holder + ".yml");
        if (file.exists() && backups) {
            file.renameTo(new File(backupsFolder, holder + ".yml"));
        }
        try {
            yaml.save(file);
        } catch (IOException e) {
            PlayerVaults.getInstance().getLogger().log(Level.SEVERE, "Failed to save vault file for: " + holder, e);
        }
    }
}