package autodig.client.command;

import autodig.client.AutoDigModClient;
import autodig.client.config.MineTask;
import autodig.client.controller.DigController;
import com.mojang.brigadier.CommandDispatcher;
import com.mojang.brigadier.arguments.StringArgumentType;
import net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource;
import net.minecraft.client.MinecraftClient;
import net.minecraft.text.Text;

/**
 * AutoDig 客户端命令。
 *
 * <p>提供 {@code /autodig gui}（打开界面）、{@code /autodig start <任务>}
 * （直接启动）、{@code /autodig stop}（停止当前任务）、{@code /autodig status}
 * （查看实时状态）四个快捷入口，方便在未绑定的快捷键场景下使用。</p>
 */
public final class AutoDigCommands {

    private AutoDigCommands() {
    }

    public static void register(CommandDispatcher<FabricClientCommandSource> dispatcher) {
        dispatcher.register(com.mojang.brigadier.builder.LiteralArgumentBuilder
                .<FabricClientCommandSource>literal("autodig")
                .then(com.mojang.brigadier.builder.LiteralArgumentBuilder.<FabricClientCommandSource>literal("gui")
                        .executes(ctx -> {
                            AutoDigModClient.instance().openGui();
                            return 1;
                        }))
                .then(com.mojang.brigadier.builder.LiteralArgumentBuilder.<FabricClientCommandSource>literal("start")
                        .then(com.mojang.brigadier.builder.RequiredArgumentBuilder
                                .<FabricClientCommandSource, String>argument("task", StringArgumentType.word())
                                .executes(ctx -> {
                                    String name = StringArgumentType.getString(ctx, "task");
                                    MineTask task = parseTask(name);
                                    if (task == null) {
                                        ctx.getSource().sendFeedback(Text.literal("未知任务: " + name + "（可用 overworld / nether / none）"));
                                        return 0;
                                    }
                                    AutoDigModClient mod = AutoDigModClient.instance();
                                    mod.config().task = task;
                                    mod.saveConfig();
                                    mod.sendToast("AutoDig: 已选择任务 " + task.label());
                                    return 1;
                                })))
                .then(com.mojang.brigadier.builder.LiteralArgumentBuilder.<FabricClientCommandSource>literal("stop")
                        .executes(ctx -> {
                            AutoDigModClient mod = AutoDigModClient.instance();
                            mod.config().task = MineTask.NONE;
                            mod.saveConfig();
                            mod.bridge().cancelAll();
                            mod.sendToast("AutoDig: 已停止");
                            return 1;
                        }))
                .then(com.mojang.brigadier.builder.LiteralArgumentBuilder.<FabricClientCommandSource>literal("status")
                        .executes(ctx -> {
                            AutoDigModClient mod = AutoDigModClient.instance();
                            if (mod == null) {
                                ctx.getSource().sendFeedback(Text.literal("AutoDig 未初始化"));
                                return 0;
                            }
                            MinecraftClient client = MinecraftClient.getInstance();
                            boolean playerOk = client.player != null;
                            String task = "任务: " + mod.config().task.label();
                            String state = "状态: " + mod.controller().statusText();
                            String hp = playerOk ? "血量: " + String.format("%.0f%%",
                                    client.player.getHealth() / Math.max(client.player.getMaxHealth(), 1.0) * 100.0) : "血量: --";
                            String food = playerOk ? "饥饿: " + client.player.getHungerManager().getFoodLevel() + "/20" : "饥饿: --";
                            String time = "时间: " + mod.controller().stats().elapsedString();
                            String deaths = "死亡: " + mod.controller().stats().getDeaths();
                            ctx.getSource().sendFeedback(Text.literal("§e== AutoDig 状态 =="));
                            ctx.getSource().sendFeedback(Text.literal("§7" + task));
                            ctx.getSource().sendFeedback(Text.literal("§7" + state));
                            ctx.getSource().sendFeedback(Text.literal("§7" + time));
                            ctx.getSource().sendFeedback(Text.literal("§7" + deaths));
                            if (playerOk) {
                                ctx.getSource().sendFeedback(Text.literal("§7" + hp));
                                ctx.getSource().sendFeedback(Text.literal("§7" + food));
                            }
                            return 1;
                        })));
    }

    private static MineTask parseTask(String name) {
        return switch (name.toLowerCase()) {
            case "overworld", "主世界", "ow" -> MineTask.OVERWORLD;
            case "nether", "下界" -> MineTask.NETHER;
            case "none", "stop", "空闲" -> MineTask.NONE;
            default -> null;
        };
    }
}