<?php

namespace App\Http\Requests\Admin\Students;

use App\Http\Requests\BaseRequest;
use App\Models\Students\Student;

/**
 * 学生请求验证类
 */
class StudentRequest extends BaseRequest
{
        /**
     * 获取特定的验证规则
     * @return array
     */
    protected function getSpecificRules(): array
    {
        $rules = [];

        switch ($this->method()) {
            case 'GET':
                // 列表查询参数
                $rules = [
                    'username' => 'nullable|string|max:200',
                    'real_name' => 'nullable|string|max:30',
                    'email' => 'nullable|string|max:200',
                    'phone_number' => 'nullable|string|max:11',
                    'role' => 'nullable|integer|in:2,3',
                    'status' => 'nullable|integer|in:0,1,2,3',
                    'sex' => 'nullable|integer|in:0,1,2',
                    'grade_id' => 'nullable|integer|min:0',
                    'parent_id' => 'nullable|integer|min:0',
                    'class_id' => 'nullable|integer|min:0',
                ];
                break;

            case 'POST':
                // 创建学生
                $rules = [
                    'username' => 'required|string|max:200|unique:student,username',
                    'real_name' => 'nullable|string|max:30',
                    'password' => 'required|string|min:6|max:20',
                    'role' => 'required|integer|in:2,3',
                    'grade_id' => 'nullable|integer|min:0',
                    'parent_id' => 'nullable|integer|exists:student,id',
                    'email' => 'nullable|email|max:200|unique:student,email',
                    'phone_number' => 'nullable|string|max:11|unique:student,phone_number',
                    'title' => 'nullable|string|max:200',
                    'avatar' => 'nullable|string|max:200',
                    'status' => 'nullable|integer|in:0,1,2,3',
                    'vip_level' => 'nullable|integer|min:0',
                    'sex' => 'nullable|integer|in:0,1,2',
                    'qq' => 'nullable|string|max:20',
                    'examing_number' => 'nullable|string|max:50',
                ];
                break;

            case 'PUT':
            case 'PATCH':
                // 更新学生
                $studentId = $this->route('id');
                $rules = [
                    'username' => 'nullable|string|max:200|unique:student,username,' . $studentId,
                    'real_name' => 'nullable|string|max:30',
                    'password' => 'nullable|string|min:6|max:20',
                    'role' => 'nullable|integer|in:2,3',
                    'grade_id' => 'nullable|integer|min:0',
                    'parent_id' => 'nullable|integer|exists:student,id',
                    'email' => 'nullable|email|max:200|unique:student,email,' . $studentId,
                    'phone_number' => 'nullable|string|max:11|unique:student,phone_number,' . $studentId,
                    'title' => 'nullable|string|max:200',
                    'avatar' => 'nullable|string|max:200',
                    'status' => 'nullable|integer|in:0,1,2,3',
                    'vip_level' => 'nullable|integer|min:0',
                    'sex' => 'nullable|integer|in:0,1,2',
                    'qq' => 'nullable|string|max:20',
                    'examing_number' => 'nullable|string|max:50',
                ];
                break;
        }

        return $rules;
    }

    /**
     * 获取特定的验证错误消息
     * @return array
     */
    protected function getSpecificMessages(): array
    {
        return [
            'username.required' => '用户名不能为空',
            'username.max' => '用户名最多200个字符',
            'username.unique' => '用户名已存在',
            'real_name.max' => '真实姓名最多30个字符',
            'password.required' => '密码不能为空',
            'password.min' => '密码长度至少6位',
            'password.max' => '密码长度最多20位',
            'role.required' => '角色不能为空',
            'role.in' => '角色值无效',
            'grade_id.integer' => '年级ID必须是整数',
            'grade_id.min' => '年级ID不能小于0',
            'parent_id.integer' => '家长ID必须是整数',
            'parent_id.exists' => '家长不存在',
            'email.email' => '邮箱格式不正确',
            'email.max' => '邮箱最多200个字符',
            'email.unique' => '邮箱已存在',
            'phone_number.max' => '手机号最多11个字符',
            'phone_number.unique' => '手机号已存在',
            'title.max' => '头衔最多200个字符',
            'avatar.max' => '头像URL最多200个字符',
            'status.in' => '状态值无效',
            'vip_level.integer' => 'VIP等级必须是整数',
            'vip_level.min' => 'VIP等级不能小于0',
            'sex.in' => '性别值无效',
            'qq.max' => 'QQ号最多20个字符',
            'examing_number.max' => '考号最多50个字符',
        ];
    }


    /**
     * 获取字段名称
     * @return array
     */
    public function attributes(): array
    {
        return [
            'username' => '用户名',
            'real_name' => '真实姓名',
            'password' => '密码',
            'role' => '角色',
            'grade_id' => '年级ID',
            'parent_id' => '家长ID',
            'email' => '邮箱',
            'phone_number' => '手机号',
            'title' => '头衔',
            'avatar' => '头像',
            'status' => '状态',
            'vip_level' => 'VIP等级',
            'sex' => '性别',
            'qq' => 'QQ号',
            'examing_number' => '考号',
            'class_id' => '班级ID',
        ];
    }

    /**
     * 配置验证器
     * @param \Illuminate\Validation\Validator $validator
     * @return void
     */
    public function withValidator($validator): void
    {
        $validator->after(function ($validator) {
            // 如果是创建学生并且指定了家长，验证家长必须是家长角色
            if ($this->method() === 'POST' && $this->parent_id) {
                $parent = Student::find($this->parent_id);
                if ($parent && $parent->role !== Student::ROLE_PARENT) {
                    $validator->errors()->add('parent_id', '指定的家长用户角色不正确');
                }
            }

            // 如果是学生角色，不能指定自己为家长
            if ($this->role === Student::ROLE_STUDENT && $this->parent_id) {
                $studentId = $this->method() === 'POST' ? 0 : $this->route('id');
                if ($this->parent_id == $studentId) {
                    $validator->errors()->add('parent_id', '不能指定自己为家长');
                }
            }
        });
    }
}