mirror of
https://gitee.com/koogua/course-tencent-cloud.git
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100 lines
2.6 KiB
PHP
100 lines
2.6 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2021 深圳市酷瓜软件有限公司
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* @license https://opensource.org/licenses/GPL-2.0
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* @link https://www.koogua.com
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*/
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namespace App\Services\Utils;
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use App\Models\Course as CourseModel;
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use App\Services\Service as AppService;
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class CourseScore extends AppService
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{
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public function handle(CourseModel $course)
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{
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if ($course->market_price == 0) {
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$score = $this->calculateFreeCourseScore($course);
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} else {
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$score = $this->calculateChargeCourseScore($course);
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}
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$course->score = $score;
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$course->update();
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}
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protected function calculateFreeCourseScore(CourseModel $course)
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{
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$weight = [
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'factor1' => 0.1,
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'factor2' => 0.25,
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'factor3' => 0.2,
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'factor4' => 0.1,
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'factor5' => 0.25,
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'factor6' => 0.1,
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];
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return $this->calculateCourseScore($course, $weight);
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}
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protected function calculateChargeCourseScore(CourseModel $course)
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{
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$weight = [
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'factor1' => 0.1,
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'factor2' => 0.3,
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'factor3' => 0.15,
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'factor4' => 0.15,
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'factor5' => 0.2,
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'factor6' => 0.1,
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];
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return $this->calculateCourseScore($course, $weight);
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}
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protected function calculateCourseScore(CourseModel $course, $weight)
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{
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$items = [
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'factor1' => 0.0,
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'factor2' => 0.0,
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'factor3' => 0.0,
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'factor4' => 0.0,
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'factor5' => 0.0,
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'factor6' => 0.0,
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];
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if ($course->featured == 1) {
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$items['factor1'] = 7 * $weight['factor1'];
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}
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if ($course->user_count > 0) {
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$items['factor2'] = log($course->user_count) * $weight['factor2'];
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}
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if ($course->favorite_count > 0) {
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$items['factor3'] = log($course->favorite_count) * $weight['factor3'];
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}
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if ($course->consult_count > 0) {
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$items['factor4'] = log($course->consult_count) * $weight['factor4'];
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}
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if ($course->review_count > 0 && $course->rating > 0) {
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$items['factor5'] = log($course->review_count * $course->rating) * $weight['factor5'];
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}
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$sumCount = $course->lesson_count + $course->package_count + $course->resource_count;
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if ($sumCount > 0) {
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$items['factor6'] = log($sumCount) * $weight['factor6'];
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}
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$score = array_sum($items) / log(time() - $course->create_time);
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return round($score, 4);
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}
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}
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