<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------

namespace app\service\api\student;

use app\model\customer_resources\CustomerResources;
use app\model\student\Student;
use app\model\member\Member;
use think\facade\Db;
use core\base\BaseService;
use core\exception\CommonException;

/**
 * 学员信息管理服务类
 */
class StudentService extends BaseService
{
    /**
     * 获取当前用户的学员列表
     * @return array
     */
    public function getStudentList()
    {
        // 获取当前登录用户ID
        $customerId = $this->getUserId();
        
        // 通过客户资源表获取user_id
        $customerResource = (new CustomerResources())->where('id', $customerId)->find();
        if (!$customerResource) {
            throw new CommonException('用户信息不存在');
        }

        // 获取该用户的所有学员
        $studentList = (new Student())
            ->where('user_id', $customerId)
            ->where('deleted_at', 0)
            ->field('id,name,gender,birthday,headimg,created_at')
            ->order('id desc')
            ->select()
            ->toArray();

        // 计算年龄和格式化数据
        foreach ($studentList as &$student) {
            $student['age'] = $this->calculateAge($student['birthday']);
            $student['gender_text'] = $student['gender'] == 1 ? '男' : '女';
            $student['headimg'] = $student['headimg'] ? get_image_url($student['headimg']) : '';
        }

        return [
            'list' => $studentList,
            'total' => count($studentList)
        ];
    }

    /**
     * 获取学员概览信息（首页用）
     * @param int $studentId
     * @return array
     */
    public function getStudentSummary($studentId)
    {
        // 验证学员权限
        $this->checkStudentPermission($studentId);

        $student = (new Student())
            ->where('id', $studentId)
            ->where('deleted_at', 0)
            ->find();

        if (!$student) {
            throw new CommonException('学员信息不存在');
        }

        // 获取用户基本信息
        $member = (new CustomerResources())->where('id', $student['user_id'])->find();

        return [
            'student_id' => $student['id'],
            'name' => $student['name'],
            'age' => $this->calculateAge($student['birthday']),
            'gender' => $student['gender'],
            'gender_text' => $student['gender'] == 1 ? '男' : '女',
            'headimg' => $student['headimg'] ? get_image_url($student['headimg']) : '',
            'member_name' => $member['name'] ?? '',
            'created_at' => $student['created_at'],
            'create_year_month' => date('Y年m月', strtotime($student['created_at'])),
            'week_day' => '星期' . ['日', '一', '二', '三', '四', '五', '六'][date('w')]
        ];
    }

    /**
     * 获取学员详细信息
     * @param int $studentId
     * @return array
     */
    public function getStudentInfo($studentId)
    {
        // 验证学员权限
        $this->checkStudentPermission($studentId);

        $student = (new Student())
            ->where('id', $studentId)
            ->where('deleted_at', 0)
            ->find();

        if (!$student) {
            throw new CommonException('学员信息不存在');
        }

        $studentData = $student->toArray();
        
        // 处理图片URL
        $studentData['headimg'] = $studentData['headimg'] ? get_image_url($studentData['headimg']) : '';
        
        // 计算年龄
        $studentData['age'] = $this->calculateAge($studentData['birthday']);
        $studentData['gender_text'] = $studentData['gender'] == 1 ? '男' : '女';

        return $studentData;
    }

    /**
     * 获取学员详细信息（包含体测信息）
     * @param int $studentId
     * @return array
     */
    public function getStudentInfoWithPhysicalTest($studentId)
    {
        // 验证学员权限
        $this->checkStudentPermission($studentId);

        // 获取学员基本信息
        $student = Db::table('school_student')
            ->where('id', $studentId)
            ->where('deleted_at', 0)
            ->find();

        if (!$student) {
            throw new CommonException('学员信息不存在');
        }

        // 获取最新的体测信息
        $physicalTest = Db::table('school_physical_test')
            ->where('student_id', $studentId)
            ->order('created_at desc')
            ->find();

        // 处理学员信息
        $studentInfo = [
            'id' => $student['id'],
            'name' => $student['name'],
            'gender' => $student['gender'],
            'gender_text' => $student['gender'] == 1 ? '男' : '女',
            'birthday' => $student['birthday'],
            'emergency_contact' => $student['emergency_contact'],
            'contact_phone' => $student['contact_phone'],
            'note' => $student['note'],
            'headimg' => $student['headimg'] ? get_image_url($student['headimg']) : '',
        ];

        // 处理体测信息
        $physicalTestInfo = [];
        if ($physicalTest) {
            $physicalTestInfo = [
                'height' => $physicalTest['height'] ? (string)$physicalTest['height'] : '',
                'weight' => $physicalTest['weight'] ? (string)$physicalTest['weight'] : '',
                'test_date' => date('Y-m-d', strtotime($physicalTest['created_at']))
            ];
        }

        return [
            'student_info' => $studentInfo,
            'physical_test_info' => $physicalTestInfo
        ];
    }

    /**
     * 更新学员信息
     * @param array $data
     * @return bool
     */
    public function updateStudentInfo($data)
    {
        $studentId = $data['student_id'];
        
        // 验证学员权限
        $this->checkStudentPermission($studentId);

        // 验证学员是否存在
        $student = Db::table('school_student')
            ->where('id', $studentId)
            ->where('deleted_at', 0)
            ->find();
            
        if (!$student) {
            throw new CommonException('学员信息不存在');
        }

        // 允许更新的字段
        $allowedFields = ['name', 'gender', 'birthday', 'emergency_contact', 'contact_phone', 'note', 'headimg'];
        $updateData = [];
        
        foreach ($allowedFields as $field) {
            if (isset($data[$field]) && $data[$field] !== '') {
                $updateData[$field] = $data[$field];
            }
        }

        if (empty($updateData)) {
            throw new CommonException('没有需要更新的数据');
        }

        // 如果有生日更新，需要重新计算年龄
        if (isset($updateData['birthday'])) {
            $updateData['age'] = $this->calculateAgeFromBirthday($updateData['birthday']);
        }

        $result = Db::table('school_student')
            ->where('id', $studentId)
            ->update($updateData);
        
        if ($result === false) {
            throw new CommonException('更新学员信息失败');
        }

        return true;
    }

    /**
     * 上传学员头像
     * @param int $studentId
     * @return array
     */
    public function uploadAvatar($studentId)
    {
        // 验证学员权限
        $this->checkStudentPermission($studentId);

        // 处理文件上传
        $uploadService = new \app\service\api\upload\UploadService();
        $result = $uploadService->avatar(request()->file('image'));

        if (!$result) {
            throw new CommonException('头像上传失败');
        }

        // 更新学员头像
        $student = (new Student())->where('id', $studentId)->find();
        $student->headimg = $result['url'];
        $student->save();

        return [
            'url' => get_image_url($result['url']),
            'path' => $result['url']
        ];
    }

    /**
     * 检查学员权限（确保只能操作自己的孩子）
     * @param int $studentId
     * @return bool
     */
    private function checkStudentPermission($studentId)
    {
        $customerId = $this->getUserId();
        // 获取客户资源信息
        $customerResource = (new CustomerResources())->where('id', $customerId)->find();
        if (!$customerResource) {
            throw new CommonException('用户信息不存在');
        }

        // 检查学员是否属于当前用户
        $student = (new Student())
            ->where('id', $studentId)
            ->where('user_id', $customerId)
            ->where('deleted_at', 0)
            ->find();

        if (!$student) {
            throw new CommonException('无权限访问该学员信息');
        }

        return true;
    }

    /**
     * 计算年龄
     * @param string $birthday
     * @return int
     */
    private function calculateAge($birthday)
    {
        if (!$birthday) return 0;
        
        $birthTime = strtotime($birthday);
        if (!$birthTime) return 0;
        
        $age = date('Y') - date('Y', $birthTime);
        
        // 如果还没过生日，年龄减1
        if (date('md') < date('md', $birthTime)) {
            $age--;
        }
        
        return max(0, $age);
    }

    /**
     * 根据生日精确计算年龄（支持小数表示）
     * @param string $birthday
     * @return float
     */
    private function calculateAgeFromBirthday($birthday)
    {
        if (!$birthday) return 0;
        
        $birthTime = strtotime($birthday);
        if (!$birthTime) return 0;
        
        $today = new \DateTime();
        $birthDate = new \DateTime($birthday);
        
        $interval = $today->diff($birthDate);
        
        $years = $interval->y;
        $months = $interval->m;
        
        // 将月份转换为小数，如3岁11个月 = 3.11
        return $years + ($months / 100);
    }

    /**
     * 添加孩子信息
     * @param array $data
     * @return array
     */
    public function addChild($data)
    {
        $customerId = $this->getUserId();
        
        // 创建学员数据
        $studentData = [
            'user_id' => $customerId,
            'name' => $data['name'],
            'gender' => (int)$data['gender'],
            'birthday' => $data['birthday'],
            'headimg' => $data['headimg'] ?? '',
            'emergency_contact' => $data['emergency_contact'] ?? '',
            'contact_phone' => $data['contact_phone'] ?? '',
            'note' => $data['note'] ?? '',
            'age' => $this->calculateAgeFromBirthday($data['birthday']),
            'created_at' => date('Y-m-d H:i:s'),
            'updated_at' => date('Y-m-d H:i:s'),
            'deleted_at' => 0
        ];

        try {
            // 插入学员数据
            $studentId = Db::table('school_student')->insertGetId($studentData);
            
            if (!$studentId) {
                throw new CommonException('添加孩子失败');
            }

            return [
                'student_id' => $studentId,
                'name' => $data['name'],
                'gender_text' => $data['gender'] == 1 ? '男' : '女',
                'age' => $this->calculateAge($data['birthday'])
            ];
            
        } catch (\Exception $e) {
            throw new CommonException('添加孩子失败：' . $e->getMessage());
        }
    }

    /**
     * 获取当前登录用户ID
     * @return int
     */
    private function getUserId()
    {
        // 从request中获取memberId（由ApiCheckToken中间件设置）
        $memberId = request()->memberId();
        if ($memberId) {
            return $memberId;
        }
        
        // 如果没有中间件设置，尝试解析token
        $token = request()->header('token');
        if ($token) {
            try {
                $loginService = new \app\service\api\login\LoginService();
                $tokenInfo = $loginService->parseToken($token);
                if (!empty($tokenInfo) && isset($tokenInfo['member_id'])) {
                    return $tokenInfo['member_id'];
                }
            } catch (\Exception $e) {
                // token解析失败，抛出异常
                throw new CommonException('用户未登录或token无效');
            }
        }
        
        // 如果都没有，抛出异常
        throw new CommonException('用户未登录');
    }
}