course/app/api/controller/StudentController.php

<?php

namespace app\api\controller;

use app\BaseController;
use app\common\model\StudentSchedule;
use app\common\service\StudentService;
use app\constant\ResponseCode;
use support\Request;

class StudentController extends BaseController
{
    protected $noNeedLogin = ['login', 'getCode'];

    /**
     * @desc 登录
     * @param Request $request
     * @return \support\Response
     */
    public function login(Request $request)
    {
        $service = new StudentService();
        $res = $service->login($request->post());
        return $this->json($res);
    }


    /**
     * @desc 更改密码
     * @param Request $request
     * @return \support\Response
     */
    public function resetPassword(Request $request)
    {
        $service = new StudentService();
        $res = $service->resetPassword($request);
        return $this->json($res);
    }

    /**
     * @desc 获取code
     * @param Request $request
     * @return \support\Response
     */
    public function getCode(Request $request)
    {
        $appid = getenv('APP_ID');
        $redirect_uri = urlencode(getenv('SERVER_DOMAIN') . "/h5#/pages/login/login");//重定向地址
//        $redirect_uri = getenv('SERVER_DOMAIN') . "/h5#/pages/index/index";//重定向地址

        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=STATE&connect_redirect=1#wechat_redirect";
//        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";

        return $this->json([
            'code' => ResponseCode::SUCCESS,
            'data' => $url
        ]);
//        return redirect($url);
    }

    /**
     * @desc 学生信息
     * @param Request $request
     * @return \support\Response
     */
    public function userInfo(Request $request)
    {

        $service = new StudentService();
        $res = $service->userInfo($request);
        return $this->json($res);
    }

    /**
     * @desc 更新学生openid
     * @param Request $request
     * @return \support\Response
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function updateOpenid(Request $request)
    {
        $service = new StudentService();
        $res = $service->updateOpenid($request);
        return $this->json($res);
    }


    /**
     * @desc 学生课表
     * @param Request $request
     * @return void
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\ModelNotFoundException
     */
    public function downloadSchedule(Request $request)
    {

        $request_data = $request->post();
        $month = date('Y-m', strtotime($request_data['date']));
        $student_schedule = StudentSchedule::where(['student_id' => $request->student->id, 'is_publish' => 1])
            ->where(['month' => $month])
            ->with(['teacher', 'subject'])
            ->order('start_time asc')
            ->select()->toArray();

        $array = [];
        $stu_nmae = '';

        foreach ($student_schedule as $k => &$v) {
            $array[] = [
                'week' => $this->getWeek(strtotime($v['date'])),
                'date' => $v['date'],
                'time_on' => $v['time'],
                'subject' => $v['subject_name'],
                'teacher_name' => $v['teacher_name'],
                'time_num' => $v['hour'] . '/h',
            ];
            $stu_nmae = $v['student_name'];
        }

        $params = [
            'row' => count($student_schedule) + 1,//数据的行数
            'file_name' => time() . '.png',
            'title' => $stu_nmae,
            'table_time' => $month,
            'data' => $array,
        ];
        $file_path = '/files/images/student_schedule/' . $month . "/{$request->student->id}/";
        $base = [
            'border' => 10,//图片外边框
            'file_path' => public_path($file_path),//图片保存路径
            'title_height' => 30,//报表名称高度
            'title_font_size' => 16,//报表名称字体大小
            'font_ulr' => public_path('/Alibaba-PuHuiTi-Light.ttf'),//字体文件路径
            'text_size' => 12,//正文字体大小
            'row_hight' => 30,//每行数据行高
            'filed_id_width' => 60,//序号列的宽度
            'filed_name_width' => 120,//玩家名称的宽度
            'filed_data_width' => 120,//数据列的宽度
            'table_header' => ['', '星期', '日期', '上课时间', '学科', '教师', '课时'],//表头文字
            'column_text_offset_arr' => [45, 70, 70, 100, 55, 65, 65],//表头文字左偏移量
            'row_text_offset_arr' => [50, 110, 90, 110, 90, 90, 90],//数据列文字左偏移量
        ];
        $base['img_width'] = $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 5 + $base['border'] * 2;//图片宽度
        $base['img_height'] = $params['row'] * $base['row_hight'] + $base['border'] * 2 + $base['title_height'];//图片高度
        $border_top = $base['border'] + $base['title_height'];//表格顶部高度
        $border_bottom = $base['img_height'] - $base['border'];//表格底部高度
        $base['column_x_arr'] = [
            $base['border'] + $base['filed_id_width'],//第一列边框线x轴像素  70/2+10
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'],//第二列边框线x轴像素  190
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 1,//第三列边框线x轴像素
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 2,//第四列边框线x轴像素
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 3,//第五列边框线x轴像素
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 4,//第五列边框线x轴像素
            $base['border'] + $base['filed_id_width'] + $base['filed_name_width'] + $base['filed_data_width'] * 5,//第五列边框线x轴像素
        ];

        // var_dump( $base['column_x_arr']);
        $img = imagecreatetruecolor($base['img_width'], $base['img_height']);//创建指定尺寸图片
        $bg_color = imagecolorallocate($img, 255, 255, 255);//设定图片背景色
        $text_coler = imagecolorallocate($img, 0, 0, 0);//设定文字颜色
        $border_coler = imagecolorallocate($img, 0, 0, 0);//设定边框颜色
//        $white_coler = imagecolorallocate($img, 255, 255, 255);//设定边框颜色
        imagefill($img, 0, 0, $bg_color);//填充图片背景色
        //先填充一个黑色的大块背景
        imagefilledrectangle($img, $base['border'], $base['border'] + $base['title_height'], $base['img_width'] - $base['border'], $base['img_height'] - $base['border'], $border_coler);//画矩形
        //再填充一个小两个像素的 背景色区域，形成一个两个像素的外边框
        imagefilledrectangle($img, $base['border'] + 2, $base['border'] + $base['title_height'] + 2, $base['img_width'] - $base['border'] - 2, $base['img_height'] - $base['border'] - 2, $bg_color);//画矩形
        //画表格纵线 及 写入表头文字
        foreach ($base['column_x_arr'] as $key => $x) {
            imageline($img, $x, $border_top, $x, $border_bottom, $border_coler);//画纵线
            $x = $x - $base['column_text_offset_arr'][$key] + 1;
            // echo  $x;echo  "<br>";
            $y = $border_top + $base['row_hight'] - 8;
            $text = $base['table_header'][$key];
            imagettftext($img, $base['text_size'], 0, $x, $y, $text_coler, $base['font_ulr'], $text);//写入表头文字
        }
        //画表格横线
        foreach ($params['data'] as $key => $item) {
            $border_top += $base['row_hight'];
            imageline($img, $base['border'], $border_top, $base['img_width'] - $base['border'], $border_top, $border_coler);
            $x = $base['column_x_arr'][0] - $base['row_text_offset_arr'][0];
            $y = $border_top + $base['row_hight'] - 10;
            $text = $key + 1;
            imagettftext($img, $base['text_size'], 0, $x, $y, $text_coler, $base['font_ulr'], $text);//写入序号
            $sub = 0;
            foreach ($item as $value) {
                $sub++;
                imagettftext($img, $base['text_size'], 0, $base['column_x_arr'][$sub] - $base['row_text_offset_arr'][$sub], $border_top + $base['row_hight'] - 10, $text_coler, $base['font_ulr'], $value);//写入data数据
            }
        }
        //计算标题写入起始位置
        $title_fout_box = imagettfbbox($base['title_font_size'], 0, $base['font_ulr'], $params['title']);//imagettfbbox() 返回一个含有 8 个单元的数组表示了文本外框的四个角：

        $title_fout_width = $title_fout_box[2] - $title_fout_box[0];//右下角 X 位置 - 左下角 X 位置 为文字宽度
        $title_fout_height = $title_fout_box[1] - $title_fout_box[7];//左下角 Y 位置- 左上角 Y 位置 为文字高度
        //居中写入标题
        imagettftext($img, $base['title_font_size'], 0, ($base['img_width'] - $title_fout_width) / 2, $base['title_height'], $text_coler, $base['font_ulr'], $params['title']);
        //写入制表时间
        imagettftext($img, $base['text_size'], 0, $base['border'], $base['title_height'], $text_coler, $base['font_ulr'], '时间：' . $params['table_time']);
        $save_path = $base['file_path'] . $params['file_name'];
        if (!is_dir($base['file_path']))//判断存储路径是否存在，不存在则创建
        {
            mkdir($base['file_path'], 0777, true);//可创建多级目录
        }
        imagepng($img, $save_path, 0);//输出图片，输出png使用imagepng方法，输出gif使用imagegif方法

        $url = getenv('SERVER_DOMAIN') . $file_path . $params['file_name'];
        return $this->json([
            'code' => ResponseCode::SUCCESS,
            'data' => $url
        ]);

    }


    public function getWeek($date)
    {
        $week_array = array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
        $week = date("w", $date);
        return $week_array[$week];
    }

}