<?php

namespace App\Http\Controllers\Admin\Students;

use App\Http\Controllers\BaseController;
use App\Http\Requests\Admin\Students\StudentRequest;
use App\Services\Students\StudentService;
use Illuminate\Http\Request;

/**
 * 学生管理控制器
 */
class StudentController extends BaseController
{
    protected $studentService;

    public function __construct(StudentService $studentService)
    {
        $this->studentService = $studentService;
    }

    /**
     * 获取学生列表
     * @param Request $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function index(Request $request)
    {
        $params = $request->all();
        $result = $this->studentService->getStudentList($params);

        return $this->success($result, '获取学生列表成功');
    }

    /**
     * 创建学生
     * @param StudentRequest $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function store(StudentRequest $request)
    {
        $data = $request->validated();
        $result = $this->studentService->createStudent($data);

        return $this->success($result, '创建学生成功');
    }

    /**
     * 获取学生详情
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function show(int $id)
    {
        $result = $this->studentService->getStudentDetail($id);

        return $this->success($result, '获取学生详情成功');
    }

    /**
     * 更新学生
     * @param StudentRequest $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function update(StudentRequest $request, int $id)
    {
        $data = $request->validated();
        $result = $this->studentService->updateStudent($id, $data);

        return $this->success($result, '更新学生成功');
    }

    /**
     * 删除学生
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function destroy(int $id)
    {
        $this->studentService->deleteStudent($id);

        return $this->success([], '删除学生成功');
    }

    /**
     * 重置学生密码
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function resetPassword(Request $request, int $id)
    {
        $request->validate([
            'password' => 'required|string|min:6|max:20'
        ], [
            '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'
        ]);

        $this->studentService->resetPassword($id, $request->password);

        return $this->success([], '重置密码成功');
    }

    /**
     * 更新学生状态
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function updateStatus(Request $request, int $id)
    {
        $request->validate([
            'status' => 'required|integer|in:0,1,2,3'
        ], [
            'status.required' => '状态不能为空',
            'status.in' => '状态值无效'
        ]);

        $result = $this->studentService->updateStatus($id, $request->status);

        return $this->success($result, '更新状态成功');
    }

    /**
     * 获取学生班级历史
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function classHistory(int $id)
    {
        $result = $this->studentService->getStudentClassHistory($id);

        return $this->success($result, '获取班级历史成功');
    }

    /**
     * 分配学生到班级
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function assignToClass(Request $request, int $id)
    {
        $request->validate([
            'class_id' => 'required|integer|exists:school_class,id',
            'join_time' => 'nullable|date',
            'remark' => 'nullable|string|max:500'
        ], [
            'class_id.required' => '班级ID不能为空',
            'class_id.exists' => '班级不存在',
            'join_time.date' => '入班时间格式错误',
            'remark.max' => '备注最多500字符'
        ]);

        $result = $this->studentService->assignToClass($id, $request->class_id, $request->only(['join_time', 'remark']));

        return $this->success($result, '分配班级成功');
    }

    /**
     * 从班级移除学生
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function removeFromClass(Request $request, int $id)
    {
        $request->validate([
            'class_id' => 'required|integer|exists:school_class,id',
            'status' => 'nullable|integer|in:2,3,4',
            'leave_time' => 'nullable|date',
            'remark' => 'nullable|string|max:500'
        ], [
            'class_id.required' => '班级ID不能为空',
            'class_id.exists' => '班级不存在',
            'status.in' => '状态值无效',
            'leave_time.date' => '离班时间格式错误',
            'remark.max' => '备注最多500字符'
        ]);

        $this->studentService->removeFromClass($id, $request->class_id, $request->only(['status', 'leave_time', 'remark']));

        return $this->success([], '移除班级成功');
    }

    /**
     * 获取家长的子女列表
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function getChildren(int $id)
    {
        $result = $this->studentService->getParentChildren($id);

        return $this->success($result, '获取子女列表成功');
    }

    /**
     * 绑定家长和子女关系
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function bindChild(Request $request, int $id)
    {
        $request->validate([
            'child_id' => 'required|integer|exists:student,id'
        ], [
            'child_id.required' => '子女ID不能为空',
            'child_id.exists' => '子女不存在'
        ]);

        $this->studentService->bindParentChild($id, $request->child_id);

        return $this->success([], '绑定子女成功');
    }

    /**
     * 解除家长和子女关系
     * @param int $id
     * @return \Illuminate\Http\JsonResponse
     */
    public function unbindChild(int $id)
    {
        $this->studentService->unbindParentChild($id);

        return $this->success([], '解除绑定成功');
    }

    /**
     * 获取学生统计信息
     * @return \Illuminate\Http\JsonResponse
     */
    public function statistics()
    {
        $result = $this->studentService->getStudentStatistics();

        return $this->success($result, '获取统计信息成功');
    }

    /**
     * 批量导入学生
     * @param Request $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function batchImport(Request $request)
    {
        $request->validate([
            'file' => 'required|file|mimes:xlsx,xls,csv|max:10240'
        ], [
            'file.required' => '请选择文件',
            'file.mimes' => '文件格式不正确',
            'file.max' => '文件大小不能超过10M'
        ]);

        // TODO: 实现批量导入逻辑
        return $this->success([], '批量导入功能待实现');
    }

    /**
     * 导出学生数据
     * @param Request $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function export(Request $request)
    {
        // TODO: 实现导出逻辑
        return $this->success([], '导出功能待实现');
    }
}