<?php

namespace app\common\service;

use app\common\model\Teacher;
use app\common\model\TeacherFreeTime;
use app\constant\ResponseCode;
use think\Exception;
use DateTime;

class TeacherFreeTimeService
{


    /**
     * @desc 添加空闲时间
     * @param $request
     * @return array
     * @throws \Exception
     */
    public function addFreeTime($request)
    {
        try {
            if (empty($request->teacher)) {
                throw new Exception('请教师登陆后再设置');
            }
            $teacher = Teacher::where(['id' => $request->teacher->id])->findOrEmpty();

            if ($teacher->isEmpty()) {
                throw new Exception('未找到教师信息，设置失败');
            }
            $data = $request->post();

            $free_time = json_decode($data['free_time'], true);

            if (empty($free_time)) {
                throw new Exception('请选择时间段之后再提交');
            }
            $total_count = 0;
            $exit_count = 0;
            $err_free_count = 0;

            foreach ($free_time as $free_date => $times) {
                if ($times) {
                    foreach ($times as $time) {
                        $time_period = explode('-', $time);
                        $firstDate = new DateTime($free_date . ' ' . trim($time_period[0]));
                        $secondDate = new DateTime($free_date . ' ' . trim($time_period[1]));
                        $diff = $secondDate->diff($firstDate);
                        $h = $diff->h;
                        $m = round($diff->i / 60, 2);
                        $hour = round($h + $m, 2);
                        $time = $time_period[0] . ' - ' . $time_period[1];
                        $free_data = [
                            'teacher_id' => $request->teacher->id,
                            'date' => $free_date,
                            'time' => $time,
                            'hour' => $hour,
                            'start_time' => date('Y-m-d H:i:s', $firstDate->getTimestamp()),
                            'end_time' => date('Y-m-d H:i:s', $secondDate->getTimestamp()),
                            'month' => date('Y-m', strtotime($free_date)),
                        ];

                        //判断是否已经存在
                        $exit = TeacherFreeTime::where($free_data)->findOrEmpty();
                        if(!$exit->isEmpty()){
                            continue;
                        }
                        $res = TeacherFreeTime::create($free_data);
                        if(!$res){
                            throw new Exception('保存失败');
                        }
                    }
                }
            }

            return [
                'code' => ResponseCode::SUCCESS,
                'msg' => '保存成功'
            ];

        }catch (Exception $e){
            return [
                'code' => ResponseCode::FAIL,
                'msg' => $e->getMessage()
            ];
        }

    }

}