<?php

namespace App\Http\Controllers\API\Admin;

use App\Http\Controllers\Controller;
use App\Services\UserService;
use Illuminate\Http\Request;
use App\Lib\Rs;
use Illuminate\Support\Facades\DB;

class HolidayController extends Controller
{
    private $userService;

    public function __construct(UserService $userService)
    {
        $this->userService = $userService;
    }

    /**
     * 获取节假日列表
     */
    public function list(Request $request)
    {
        $payload = $request->attributes->get('payload');
        if (!$payload) {
            return Rs::error('用户信息无效', 401);
        }

        $year = $request->input('year', null);
        $month = $request->input('month', null);
        $type = $request->input('type', null);
        $status = $request->input('status', null);
        $page = $request->input('page', 1);
        $pageSize = $request->input('page_size', 20);

        $query = DB::table('holiday')
            ->where('deleted', 0);

        if ($year !== null && $year !== '') {
            $query->whereYear('date', $year);
        }

        if ($month !== null && $month !== '') {
            $query->whereMonth('date', $month);
        }

        if ($type !== null && $type !== '') {
            $query->where('type', $type);
        }

        if ($status !== null && $status !== '') {
            $query->where('status', $status);
        }

        $total = $query->count();

        $holidays = $query->orderBy('date', 'asc')
            ->skip(($page - 1) * $pageSize)
            ->take($pageSize)
            ->get();

        $data = [
            'list' => $holidays,
            'total' => $total,
            'page' => $page,
            'page_size' => $pageSize,
            'total_pages' => ceil($total / $pageSize)
        ];

        return Rs::success($data);
    }

    /**
     * 保存节假日（新增或更新）
     */
    public function Save(Request $request)
    {
        $payload = $request->attributes->get('payload');
        if (!$payload) {
            return Rs::error('用户信息无效', 401);
        }

        $data = $request->validate([
            'id' => 'nullable|integer',
            'date' => 'required|date',
            'type' => 'required|integer|in:1,2',
            'name' => 'nullable|string|max:50',
            'status' => 'required|integer|in:0,1',
        ]);

        if (!isset($data['id']) || $data['id'] === null) {
            $data['id'] = 0;
        }

        // 检查同一日期是否已存在（排除当前记录和已删除的）
        $exists = DB::table('holiday')
            ->where('date', $data['date'])
            ->where('deleted', 0);

        if ($data['id'] > 0) {
            $exists->where('id', '!=', $data['id']);
        }

        if ($exists->exists()) {
            return Rs::error('该日期已存在节假日记录');
        }

        try {
            $values = [
                'date' => $data['date'],
                'type' => $data['type'],
                'name' => $data['name'] ?? '',
                'status' => $data['status'],
            ];

            if ($data['id'] == 0) {
                $values['created_at'] = now();
                $values['updated_at'] = now();
                $id = DB::table('holiday')->insertGetId($values);
            } else {
                $values['updated_at'] = now();
                DB::table('holiday')->where('id', $data['id'])->update($values);
                $id = $data['id'];
            }

            return Rs::success(['id' => $id]);
        } catch (\Exception $e) {
            return Rs::error('保存失败：' . $e->getMessage());
        }
    }

    /**
     * 批量保存节假日
     */
    public function batchSave(Request $request)
    {
        $payload = $request->attributes->get('payload');
        if (!$payload) {
            return Rs::error('用户信息无效', 401);
        }

        $data = $request->validate([
            'holidays' => 'required|array|min:1',
            'holidays.*.date' => 'required|date',
            'holidays.*.type' => 'required|integer|in:1,2',
            'holidays.*.name' => 'nullable|string|max:50',
            'holidays.*.status' => 'required|integer|in:0,1',
        ]);

        try {
            DB::beginTransaction();

            $count = 0;
            foreach ($data['holidays'] as $holiday) {
                // 检查是否已存在
                $exists = DB::table('holiday')
                    ->where('date', $holiday['date'])
                    ->where('deleted', 0)
                    ->first();

                if ($exists) {
                    // 更新已有记录
                    DB::table('holiday')->where('id', $exists->id)->update([
                        'type' => $holiday['type'],
                        'name' => $holiday['name'] ?? $exists->name,
                        'status' => $holiday['status'],
                        'updated_at' => now(),
                    ]);
                } else {
                    // 新增
                    DB::table('holiday')->insert([
                        'date' => $holiday['date'],
                        'type' => $holiday['type'],
                        'name' => $holiday['name'] ?? '',
                        'status' => $holiday['status'],
                        'deleted' => 0,
                        'created_at' => now(),
                        'updated_at' => now(),
                    ]);
                }
                $count++;
            }

            DB::commit();
            return Rs::success(['count' => $count], "成功保存 {$count} 条节假日记录");
        } catch (\Exception $e) {
            DB::rollBack();
            return Rs::error('批量保存失败：' . $e->getMessage());
        }
    }

    /**
     * 删除节假日
     */
    public function Delete(Request $request)
    {
        $payload = $request->attributes->get('payload');
        if (!$payload) {
            return Rs::error('用户信息无效', 401);
        }

        $data = $request->validate([
            'id' => 'required|integer',
        ]);

        try {
            $deleted = DB::table('holiday')
                ->where('id', $data['id'])
                ->update([
                    'deleted' => 1,
                    'updated_at' => now(),
                ]);

            if ($deleted) {
                return Rs::success();
            }
            return Rs::error('删除失败：记录不存在');
        } catch (\Exception $e) {
            return Rs::error('删除失败：' . $e->getMessage());
        }
    }

    /**
     * 获取指定年份所有节假日（用于前端日历展示）
     */
    public function getByYear(Request $request)
    {
        $payload = $request->attributes->get('payload');
        if (!$payload) {
            return Rs::error('用户信息无效', 401);
        }

        $year = $request->input('year', date('Y'));

        $holidays = DB::table('holiday')
            ->where('deleted', 0)
            ->where('status', 1)
            ->whereYear('date', $year)
            ->select('id', 'date', 'type', 'name', 'status')
            ->orderBy('date', 'asc')
            ->get();

        return Rs::success($holidays);
    }
}