package jesse.keeblarcraft.EventMgr;

import java.util.HashMap;
import java.util.Map.Entry;

import jesse.keeblarcraft.ConfigMgr.ConfigManager;
import jesse.keeblarcraft.Utils.ChatUtil;
import jesse.keeblarcraft.Utils.ChatUtil.CONSOLE_COLOR;
import jesse.keeblarcraft.Utils.CustomExceptions.FILE_WRITE_EXCEPTION;
import jesse.keeblarcraft.world.dimension.ModDimensions;
import net.minecraft.nbt.NbtCompound;
import net.minecraft.nbt.NbtList;
import net.minecraft.server.network.ServerPlayerEntity;
import net.minecraft.server.world.ServerWorld;
import net.minecraft.text.Text;

public class DimensionLoadingEvent {
    private static DimensionLoadingEvent static_inst;

    public static DimensionLoadingEvent GetInstance() {
        if (static_inst == null) {
            static_inst = new DimensionLoadingEvent();
        }

        return static_inst;
    }

    private static class InventoryWrapper {
        public HashMap<String, NbtList> inventories = new HashMap<String, NbtList>();
    }

    private static InventoryWrapper iw = new InventoryWrapper();

    private static String CONFIG_LOCATION = "misc/dimension_inventories_cached.json";
    ConfigManager config = new ConfigManager();

    public DimensionLoadingEvent() {
        // read config
        // Boolean existingFile = false;
        // try {
        //     iw = config.GetJsonObjectFromFile(CONFIG_LOCATION, InventoryWrapper.class);

        //     for (Entry<String, NbtList> entry : iw.inventories.entrySet()) {
        //         System.out.println("Found entry for UUID " + entry.getKey());
        //     }
        //     System.out.println("Size of iw.inventories: " + iw.inventories.size());

        //     System.out.println("Json object was found!");
        //     existingFile = true;
        // } catch (Exception e) {
        //     System.out.println("Exception was raised when reading json file for stuff");
        //     e.printStackTrace();
        //     // Do nothing. This means the file does not exist
        // }

        // // In the event the above code failed out, this means a new file has to be created for the player's uuid
        // if (!existingFile)
        // {
        //     System.out.println("Creating new file");
        //     System.out.println(ChatUtil.ColoredString("Trying to create new file", CONSOLE_COLOR.BLUE));
        //     try {
        //         FlashConfig();
        //     } catch (Exception e) {
        //         System.out.println(ChatUtil.ColoredString("Could not write to file", CONSOLE_COLOR.RED));
        //     }
        // } else {
        //     System.out.println(ChatUtil.ColoredString("Moving on", CONSOLE_COLOR.BLUE));
        // }
    }

    // TODO: In the future when the attribute system is more complete this will need to filter a whitelist of items
    // from the that system + story mode because some items will be able to transcend dimensions!
    public void HandleWorldMove(ServerPlayerEntity player, ServerWorld origin, ServerWorld destination) {
        // System.out.println("World move event called!");
        // if (destination.getDimensionEntry().matchesKey(ModDimensions.KEEBLAR_DIM_TYPE)) {
        //     // Make sure player is in map. For now we only care about storing OVERWORLD inventory. We DO NOT care about
        //     // the dimension inventory!
        //     System.out.println("Trying to locate player in inventory map. Player uuid is " + player.getUuidAsString());
        //     if (!iw.inventories.containsKey(player.getUuidAsString())) {
        //         // Copy the nbt into the list
        //         NbtList inventoryNbt = new NbtList();
        //         player.getInventory().writeNbt(inventoryNbt);

        //         iw.inventories.put(player.getUuidAsString(), inventoryNbt);
        //         player.getInventory().clear();
        //     } else {
        //         System.out.println("Player in system. Ignoring");
        //     }
        // } else if (origin.getDimensionEntry().matchesKey(ModDimensions.KEEBLAR_DIM_TYPE)) {
        //     if (iw.inventories.containsKey(player.getUuidAsString())) {
        //         System.out.println("Player is in map. Cloning our inventory back to them...");
        //         player.getInventory().readNbt(iw.inventories.get(player.getUuidAsString()));
        //         iw.inventories.remove(player.getUuidAsString());
        //     } else {
        //         System.out.println("Player not in system. Ignoring");
        //     }
        // } else {
        //     System.out.println("dest TYPE - KEY" + destination.getDimensionEntry().getType().toString() + " -- " + destination.getDimensionEntry().getKey().toString());
        //     System.out.println("orig TYPE - KEY: " + origin.getDimensionEntry().getType().toString() + " -- "+ origin.getDimensionEntry().getKey().toString());
        // }

        // FlashConfig();
    }

    // needs to be tested
    public void SaveInventories() {
        System.out.println("Call to save inventories. Flashing IW.Inventories with size " + iw.inventories.size());
        FlashConfig();
    }

    public void CheckPlayer(ServerPlayerEntity player) {
        // Check the players logged in world. If they are logging into the overworld - we need to see if they are in our
        // map and give them the inventory back
        if ((!player.getWorld().getDimensionEntry().matchesKey(ModDimensions.KEEBLAR_DIM_TYPE)) && iw.inventories.containsKey(player.getUuidAsString())) {
            // We need to store the contents of the nbt into a regular inventory and magical chest and give it back to the player
            player.sendMessage(Text.of("[IMPORTANT]: It appears you have a saved inventory of items on the server! You can claim it with /magic-inventory claim"));
        }
    }

    // Fetches an inventory from this list. Use MagicInventory to store it along the transfer way!
    public NbtList GetInventory(String uuid) {
        NbtList nbt = iw.inventories.get(uuid);
        iw.inventories.remove(uuid);
        return nbt;
    }

    public void FlashConfig() {
        try {
            config.WriteToJsonFile(CONFIG_LOCATION, iw);
        } catch (FILE_WRITE_EXCEPTION e) {
            System.out.println(ChatUtil.ColoredString("Could not flash dimension loading configuration file", CONSOLE_COLOR.RED));
        }
    }
}