<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------
// | 官方网址：https://www.niucloud.com
// +----------------------------------------------------------------------
// | niucloud团队 版权所有 开源版本可自由商用
// +----------------------------------------------------------------------
// | Author: Niucloud Team
// +----------------------------------------------------------------------

namespace app\service\api\apiService;

use app\model\customer_resources\CustomerResources;
use app\model\student_courses\StudentCourses;
use app\model\person_course_schedule\PersonCourseSchedule;
use app\model\student_course_usage\StudentCourseUsage;
use app\model\course\Course;
use app\model\campus\Campus;
use app\model\venue\Venue;
use app\model\personnel\Personnel;
use core\base\BaseApiService;
use think\facade\Log;

/**
 * 学员课程服务类
 * Class StudentCourseService
 * @package app\service\api\apiService
 */
class StudentCourseService extends BaseApiService
{
    /**
     * 获取课程详情
     * @param array $where
     * @return array
     */
    public function getCourseDetail(array $where)
    {
        try {
            Log::debug('StudentCourseService::getCourseDetail - 查询条件: ' . json_encode($where));
            
            $course_id = $where['course_id'] ?? '';
            $resource_id = $where['resource_id'] ?? '';
            
            if (empty($course_id) || empty($resource_id)) {
                return ['code' => 0, 'msg' => '参数不完整'];
            }
            
            // 1. 获取学员课程基本信息
            $courseInfo = $this->getCourseInfo($course_id, $resource_id);
            if (!$courseInfo) {
                return ['code' => 0, 'msg' => '课程信息不存在'];
            }
            
            // 2. 获取课程安排列表
            $scheduleList = $this->getScheduleList($course_id, $resource_id);
            
            // 3. 获取课程使用记录
            $usageList = $this->getUsageList($course_id, $resource_id);
            
            $result = [
                'course_info' => $courseInfo,
                'schedule_list' => $scheduleList,
                'usage_list' => $usageList
            ];
            
            Log::debug('StudentCourseService::getCourseDetail - 返回数据: ' . json_encode($result));
            
            return ['code' => 1, 'data' => $result];
            
        } catch (\Exception $e) {
            Log::error('StudentCourseService::getCourseDetail - 异常: ' . $e->getMessage());
            return ['code' => 0, 'msg' => '获取课程详情失败: ' . $e->getMessage()];
        }
    }
    
    /**
     * 获取课程基本信息
     * @param int $course_id
     * @param int $resource_id
     * @return array|null
     */
    private function getCourseInfo($course_id, $resource_id)
    {
        $studentCourse = new StudentCourses();
        
        $info = $studentCourse
            ->alias('sc')
            ->join(['school_course' => 'c'], 'sc.course_id = c.id', 'left')
            ->join(['school_campus' => 'campus'], 'sc.campus_id = campus.id', 'left')
            ->join(['school_personnel' => 'coach'], 'sc.main_coach_id = coach.id', 'left')
            ->join(['school_personnel' => 'education'], 'sc.education_id = education.id', 'left')
            ->where([
                'sc.course_id' => $course_id,
                'sc.resource_id' => $resource_id
            ])
            ->field([
                'sc.id',
                'sc.course_id',
                'sc.resource_id',
                'sc.total_hours',
                'sc.gift_hours',
                'sc.start_date',
                'sc.end_date',
                'sc.use_total_hours',
                'sc.use_gift_hours',
                'sc.status',
                'sc.single_session_count',
                'c.course_name',
                'campus.campus_name',
                'coach.name as main_coach_name',
                'education.name as education_name'
            ])
            ->find();
            
        return $info ? $info->toArray() : null;
    }
    
    /**
     * 获取课程安排列表
     * @param int $course_id
     * @param int $resource_id
     * @return array
     */
    private function getScheduleList($course_id, $resource_id)
    {
        // 首先获取学员课程ID
        $studentCourseId = $this->getStudentCourseId($course_id, $resource_id);
        if (!$studentCourseId) {
            return [];
        }
        
        $personCourseSchedule = new PersonCourseSchedule();
        
        $list = $personCourseSchedule
            ->alias('pcs')
            ->join(['school_course_schedule' => 'cs'], 'pcs.schedule_id = cs.id', 'left')
            ->join(['school_venue' => 'v'], 'cs.venue_id = v.id', 'left')
            ->join(['school_personnel' => 'coach'], 'cs.coach_id = coach.id', 'left')
            ->where([
                'pcs.student_course_id' => $studentCourseId,
                'pcs.resources_id' => $resource_id
            ])
            ->field([
                'pcs.id',
                'pcs.schedule_id',
                'pcs.course_date',
                'pcs.time_slot',
                'pcs.schedule_type',
                'pcs.course_type',
                'pcs.status',
                'pcs.remark',
                'v.venue_name',
                'coach.name as coach_name'
            ])
            ->order('pcs.course_date desc, pcs.time_slot desc')
            ->select();
            
        return $list ? $list->toArray() : [];
    }
    
    /**
     * 获取课程使用记录
     * @param int $course_id
     * @param int $resource_id
     * @return array
     */
    private function getUsageList($course_id, $resource_id)
    {
        // 首先获取学员课程ID
        $studentCourseId = $this->getStudentCourseId($course_id, $resource_id);
        if (!$studentCourseId) {
            return [];
        }
        
        $studentCourseUsage = new StudentCourseUsage();
        
        $list = $studentCourseUsage
            ->alias('scu')
            ->join(['school_course_schedule' => 'cs'], 'scu.schedule_id = cs.id', 'left')
            ->join(['school_venue' => 'v'], 'cs.venue_id = v.id', 'left')
            ->where([
                'scu.student_course_id' => $studentCourseId,
                'scu.resource_id' => $resource_id
            ])
            ->field([
                'scu.id',
                'scu.usage_date',
                'scu.hours_used',
                'scu.usage_type',
                'scu.remark',
                'cs.time_slot',
                'v.venue_name'
            ])
            ->order('scu.usage_date desc')
            ->select();
            
        return $list ? $list->toArray() : [];
    }
    
    /**
     * 获取学员课程ID
     * @param int $course_id
     * @param int $resource_id
     * @return int|null
     */
    private function getStudentCourseId($course_id, $resource_id)
    {
        $studentCourse = new StudentCourses();
        
        $info = $studentCourse
            ->where([
                'course_id' => $course_id,
                'resource_id' => $resource_id
            ])
            ->find();
            
        return $info ? $info->id : null;
    }
}