package autodig.client;

import autodig.client.bridge.BaritoneBridge;
import autodig.client.command.AutoDigCommands;
import autodig.client.config.ConfigStore;
import autodig.client.config.DigConfig;
import autodig.client.config.MineTask;
import autodig.client.controller.DigController;
import autodig.client.gui.AutoDigGui;
import autodig.client.gui.StatusHud;
import com.mojang.brigadier.CommandDispatcher;
import net.fabricmc.api.ClientModInitializer;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback;
import net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource;
import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
import net.fabricmc.fabric.api.client.rendering.v1.HudRenderCallback;
import net.minecraft.client.MinecraftClient;
import net.minecraft.client.option.KeyBinding;
import net.minecraft.client.util.InputUtil;
import net.minecraft.text.Text;

/**
 * AutoDig 客户端主入口（Fabric ClientModInitializer）。
 *
 * <p>负责：加载配置、注册一键唤出 GUI 的快捷键、每帧把配置同步给 Baritone 并
 * 驱动挖矿控制器、注册命令。通过单例 {@link #instance()} 向其他模块提供入口。</p>
 */
@Environment(EnvType.CLIENT)
public final class AutoDigModClient implements ClientModInitializer {

    private static AutoDigModClient instance;

    private final ConfigStore configStore = new ConfigStore();
    private final DigController controller = new DigController();
    private DigConfig config;
    private boolean openGuiRequested;
    private KeyBinding guiKey;
    /** 上一次同步的任务，用于检测 controller 内部改动（如任务完成）并落盘 */
    private MineTask lastTask;

    private static final int KEY_R = 82;
    private static final int KEY_LEFT_CTRL = 341;
    private static final int KEY_RIGHT_CTRL = 345;

    @Override
    public void onInitializeClient() {
        instance = this;
        this.config = this.configStore.load();
        this.lastTask = this.config.task;
        this.guiKey = KeyBindingHelper.registerKeyBinding(new KeyBinding(
                "key.autodig.open", KEY_R, "category.autodig"));
        ClientTickEvents.END_CLIENT_TICK.register(client -> {
            // 同步模组配置到 Baritone（工具切换 / 避岩浆 / 避怪/保命）
            this.bridge().applyConfig(this.config);
            this.controller.tick(this.config);
            // controller 可能因任务完成而把 task 置空，这里落盘，避免下次进游戏自动挖矿
            if (this.config.task != this.lastTask) {
                this.lastTask = this.config.task;
                this.saveConfig();
            }
            while (this.guiKey.wasPressed()) {
                if (this.isCtrlDown(client)) {
                    this.openGui();
                } else {
                    this.sendToast("AutoDig: 请按住 Ctrl 再按此快捷键打开界面");
                }
            }
            if (this.openGuiRequested) {
                this.openGuiRequested = false;
                try {
                    client.setScreen(new AutoDigGui(this));
                } catch (Throwable t) {
                    if (client.player != null) {
                        client.player.sendMessage(Text.literal("AutoDig GUI \u6253\u5f00\u5931\u8d25: " + t), false);
                    }
                }
            }
        });
        ClientCommandRegistrationCallback.EVENT.register((dispatcher, registryAccess)
                -> AutoDigCommands.register(dispatcher));
        // 实时状态 HUD：仅在挖矿任务进行中于左上角渲染
        HudRenderCallback.EVENT.register((context, tickCounter) -> StatusHud.render(context));
    }

    public static AutoDigModClient instance() {
        return instance;
    }

    public DigController controller() {
        return this.controller;
    }

    public DigConfig config() {
        return this.config;
    }

    public BaritoneBridge bridge() {
        return this.controller.bridge();
    }

    public void saveConfig() {
        this.configStore.save(this.config);
    }

    /** 请求打开 AutoDig GUI（下一帧安全执行）。 */
    public void openGui() {
        this.openGuiRequested = true;
    }

    /** 向玩家聊天栏发送一条提示。 */
    public void sendToast(String message) {
        MinecraftClient client = MinecraftClient.getInstance();
        if (client.player != null) {
            client.player.sendMessage(Text.literal(message), false);
        }
    }

    private boolean isCtrlDown(MinecraftClient client) {
        long handle = client.getWindow().getHandle();
        return InputUtil.isKeyPressed(handle, KEY_LEFT_CTRL)
                || InputUtil.isKeyPressed(handle, KEY_RIGHT_CTRL);
    }
}