package com.example.livestreaming;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Switch;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;

import com.example.livestreaming.databinding.ActivityNotificationSettingsBinding;

import java.util.ArrayList;
import java.util.List;

/**
 * 通知设置页面
 * 支持各类通知开关和免打扰设置
 */
public class NotificationSettingsActivity extends AppCompatActivity {

    private static final String PREFS_NAME = "notification_settings";
    private static final String KEY_SYSTEM_NOTIFICATIONS = "system_notifications";
    private static final String KEY_FOLLOW_NOTIFICATIONS = "follow_notifications";
    private static final String KEY_COMMENT_NOTIFICATIONS = "comment_notifications";
    private static final String KEY_MESSAGE_NOTIFICATIONS = "message_notifications";
    private static final String KEY_LIVE_NOTIFICATIONS = "live_notifications";
    private static final String KEY_DND_ENABLED = "dnd_enabled";
    private static final String KEY_DND_START_HOUR = "dnd_start_hour";
    private static final String KEY_DND_END_HOUR = "dnd_end_hour";

    private ActivityNotificationSettingsBinding binding;
    private MoreAdapter adapter;
    private SharedPreferences prefs;

    public static void start(Context context) {
        Intent intent = new Intent(context, NotificationSettingsActivity.class);
        context.startActivity(intent);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityNotificationSettingsBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        prefs = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);

        binding.backButton.setOnClickListener(v -> finish());
        binding.titleText.setText("通知设置");

        adapter = new MoreAdapter(item -> {
            if (item == null) return;
            if (item.getType() != MoreItem.Type.ROW) return;
            handleItemClick(item);
        });

        binding.recyclerView.setLayoutManager(new LinearLayoutManager(this));
        binding.recyclerView.setAdapter(adapter);

        refreshItems();
    }

    private void handleItemClick(MoreItem item) {
        String title = item.getTitle() != null ? item.getTitle() : "";
        
        if ("免打扰".equals(title)) {
            showDoNotDisturbDialog();
        }
    }

    private void refreshItems() {
        // TODO: 接入后端接口 - 获取用户通知设置
        // 接口路径: GET /api/users/{userId}/notification/settings
        // 请求参数:
        //   - userId: 用户ID（从token中获取）
        // 返回数据格式: ApiResponse<NotificationSettings>
        // NotificationSettings对象应包含: systemEnabled, followEnabled, commentEnabled, 
        //   messageEnabled, liveEnabled, dndEnabled, dndStartHour, dndEndHour等字段
        // 首次加载时从接口获取，后续可从本地缓存读取
        List<MoreItem> items = new ArrayList<>();
        
        // 系统通知开关
        items.add(MoreItem.section("系统通知"));
        boolean systemEnabled = prefs.getBoolean(KEY_SYSTEM_NOTIFICATIONS, true);
        items.add(MoreItem.row("系统通知", systemEnabled ? "已开启" : "已关闭", R.drawable.ic_notifications_24));
        
        // 消息提醒
        items.add(MoreItem.section("消息提醒"));
        boolean followEnabled = prefs.getBoolean(KEY_FOLLOW_NOTIFICATIONS, true);
        boolean commentEnabled = prefs.getBoolean(KEY_COMMENT_NOTIFICATIONS, true);
        boolean messageEnabled = prefs.getBoolean(KEY_MESSAGE_NOTIFICATIONS, true);
        boolean liveEnabled = prefs.getBoolean(KEY_LIVE_NOTIFICATIONS, true);
        
        items.add(MoreItem.row("关注提醒", followEnabled ? "已开启" : "已关闭", R.drawable.ic_people_24));
        items.add(MoreItem.row("评论提醒", commentEnabled ? "已开启" : "已关闭", R.drawable.ic_chat_24));
        items.add(MoreItem.row("私信提醒", messageEnabled ? "已开启" : "已关闭", R.drawable.ic_chat_24));
        items.add(MoreItem.row("开播提醒", liveEnabled ? "已开启" : "已关闭", R.drawable.ic_notifications_24));
        
        // 免打扰
        items.add(MoreItem.section("免打扰"));
        boolean dndEnabled = prefs.getBoolean(KEY_DND_ENABLED, false);
        if (dndEnabled) {
            int startHour = prefs.getInt(KEY_DND_START_HOUR, 22);
            int endHour = prefs.getInt(KEY_DND_END_HOUR, 8);
            items.add(MoreItem.row("免打扰", String.format("%02d:00 - %02d:00", startHour, endHour), R.drawable.ic_notifications_24));
        } else {
            items.add(MoreItem.row("免打扰", "未开启", R.drawable.ic_notifications_24));
        }
        
        adapter.submitList(items);
    }

    private void showDoNotDisturbDialog() {
        // 简单的免打扰设置对话框
        boolean currentEnabled = prefs.getBoolean(KEY_DND_ENABLED, false);
        int startHour = prefs.getInt(KEY_DND_START_HOUR, 22);
        int endHour = prefs.getInt(KEY_DND_END_HOUR, 8);
        
        String message = "免打扰功能说明：\n\n" +
                "• 开启后，在指定时间段内不会收到通知\n" +
                "• 当前设置：" + (currentEnabled ? 
                    String.format("已开启 (%02d:00 - %02d:00)", startHour, endHour) : "未开启") + "\n" +
                "• 紧急通知仍会显示\n\n" +
                "（此功能待完善）";
        
        new android.app.AlertDialog.Builder(this)
                .setTitle("免打扰设置")
                .setMessage(message)
                .setPositiveButton("开启", (dialog, which) -> {
                    // TODO: 接入后端接口 - 更新通知设置
                    // 接口路径: PUT /api/users/{userId}/notification/settings
                    // 请求参数:
                    //   - userId: 用户ID（从token中获取）
                    //   - systemEnabled (可选): 系统通知开关
                    //   - followEnabled (可选): 关注提醒开关
                    //   - commentEnabled (可选): 评论提醒开关
                    //   - messageEnabled (可选): 私信提醒开关
                    //   - liveEnabled (可选): 开播提醒开关
                    //   - dndEnabled (可选): 免打扰开关
                    //   - dndStartHour (可选): 免打扰开始时间（小时，0-23）
                    //   - dndEndHour (可选): 免打扰结束时间（小时，0-23）
                    // 返回数据格式: ApiResponse<{success: boolean}>
                    // 更新成功后，同步更新本地缓存和界面显示
                    prefs.edit().putBoolean(KEY_DND_ENABLED, true).apply();
                    refreshItems();
                    Toast.makeText(this, "免打扰已开启", Toast.LENGTH_SHORT).show();
                })
                .setNeutralButton(currentEnabled ? "关闭" : "取消", (dialog, which) -> {
                    if (currentEnabled) {
                        prefs.edit().putBoolean(KEY_DND_ENABLED, false).apply();
                        refreshItems();
                        Toast.makeText(this, "免打扰已关闭", Toast.LENGTH_SHORT).show();
                    }
                })
                .show();
    }
}