249 lines
8.8 KiB
PHP
249 lines
8.8 KiB
PHP
<?php
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namespace app\api\controller\course;
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use app\common\controller\Api;
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use mysql_xdevapi\Collection;
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/**
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* 课程
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*/
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class Column extends Api
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{
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// 无需登录的接口,*表示全部
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protected $noNeedLogin = ['*'];
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protected $noNeedRight = '*';
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public function _initialize()
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{
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parent::_initialize();
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$this->columnDirModel = new \app\admin\model\course\ColumnDir;
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$this->model = new \app\admin\model\course\ColumnBind;
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$this->courseModel = new \app\admin\model\course\Course;
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}
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/**
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* 获取专栏目录
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* @return void
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*/
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public function getDir(){
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$courseId = input("id");
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$row = $this->columnDirModel->courseIdGetList($courseId);
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return $this->success("获取成功",$row);
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}
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/**
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* 获取专栏所属课程
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* @return mixed
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*/
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public function getCourse(){
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$courseId = input('id');
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$sort = input('sort','asc');
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$courseInfo = $this->courseModel->get($courseId);
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if(!$courseInfo){
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return $this->error("获取课程信息错误");
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}
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$list = $this->model
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->with(['course'])
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->where([
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'column_bind.column_id'=>$courseId,
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'course.status'=>1
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])
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->order("column_bind.sort {$sort}, column_bind.createtime {$courseInfo['column_update']}")
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->select();
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//判断有没有订阅
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$isSubscription = \app\common\model\user\Subscription::getSubscriptionAuth($this->auth->id,$courseId);
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if(!empty($list)){
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foreach ($list as $index => $item){
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$item['course'] = $item['course']->toArray();
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$item->getRelation('course')->visible(['name','cover','id','updatetime','views','type','type_text','pay_type']);
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$item['course'] = $this->courseModel->structrue($item['course'],'decode');
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$item->visible(['id','course','try','subscription']);
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$isCourseSubscription = \app\common\model\user\Subscription::getSubscriptionAuth($this->auth->id,$item['course']['id']);
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if($isSubscription || $isCourseSubscription || $item->try){
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$list[$index]['subscription'] = 1;
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}else{
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$list[$index]['subscription'] = 0;
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}
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}
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}
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return $this->success("获取成功",$list);
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}
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/**
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* 获取专栏目录 新
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* @return void
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*/
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public function getColumnDir(){
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$courseId = input('id');
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$sort = input('sort','asc');
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$courseInfo = $this->courseModel->get($courseId);
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if(!$courseInfo){
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return $this->error("获取课程信息错误");
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}
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$list = $this->model
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->with(['bindcourse'])
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->where([
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'column_bind.column_id'=>$courseId,
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])
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->order("column_bind.sort {$sort}, column_bind.createtime {$courseInfo['column_update']}")
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->select();
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//判断有没有订阅
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$isSubscription = \app\common\model\user\Subscription::getSubscriptionAuth($this->auth->id,$courseId);
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if(!empty($list)){
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foreach ($list as $index => &$item){
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$item->visible(['id','bindcourse','try','subscription','type','p_id','title']);
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$item->getRelation('bindcourse')->visible(['name','cover','id','updatetime','views','type','type_text','status','pay_type','no']);
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$item = $item->toArray();
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if($item['type'] == 1){
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if(!$item['bindcourse']['id'] || $item['bindcourse']['status']!=1){
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unset($list[$index]);
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continue;
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}
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$item['bindcourse'] = $this->courseModel->structrue($item['bindcourse'],'decode');
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$isCourseSubscription = \app\common\model\user\Subscription::getSubscriptionAuth($this->auth->id,$item['bindcourse']['id']);
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if($isSubscription || $isCourseSubscription || $item['try']){
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$list[$index]['subscription'] = 1;
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}else{
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$list[$index]['subscription'] = 0;
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}
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}
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}
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//重新给数组排序
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$list = array_values($list);
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}
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return $this->success("获取成功",$list);
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}
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/**
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* 获取下一课程
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* @return mixed
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*/
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public function getNextCourse() {
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$courseId = input('course_id');
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$columnId = input('column_id');
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// 1. 验证专栏和课程是否存在
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$columnInfo = $this->courseModel->get($columnId);
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if (!$columnInfo) {
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return $this->success();
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}
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$courseInfo = $this->model->where(['column_id' => $columnId, 'course_id' => $courseId])->find();
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if (!$courseInfo) {
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return $this->success();
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}
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// 2. 关键修正：查询专栏下所有课程和目录（包含type=1和type=2）
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$allItems = $this->model
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->with(['course'])
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->where([
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'course.status'=>1
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])
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->where('column_id', $columnId)
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->field('column_bind.id, column_bind.course_id, column_bind.type, column_bind.sort, column_bind.p_id, column_bind.createtime')
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->select();
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if (empty($allItems)) {
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return $this->success();
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}
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// 3. 构建映射和子元素分组（方便快速查找父元素和子课程）
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$itemMap = []; // 按 id 映射所有元素（id是column_bind表的主键）
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$childrenGroups = []; // 按 p_id 分组（p_id对应父目录的id）
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$courseIdToItemId = []; // 课程id -> column_bind.id 的映射（用于快速定位当前课程）
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foreach ($allItems as $item) {
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$itemMap[$item['id']] = $item;
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$pId = $item['p_id'];
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if (!isset($childrenGroups[$pId])) {
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$childrenGroups[$pId] = [];
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}
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$childrenGroups[$pId][] = $item;
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// 关联课程id和column_bind的id（因为传入的是course_id，不是column_bind的id）
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if ($item['type'] == 1) { // 只有课程有course_id
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$courseIdToItemId[$item['course_id']] = $item['id'];
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}
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}
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// 4. 筛选一级元素（p_id=0的课程/目录）并排序
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$level1Items = $childrenGroups[0] ?? [];
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usort($level1Items, function($a, $b) {
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// 排序规则：sort升序 -> createtime升序
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if ($a['sort'] != $b['sort']) {
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return $a['sort'] - $b['sort'];
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}
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return strcmp($a['createtime'], $b['createtime']);
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});
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// 5. 构建最终排序列表（一级元素 + 对应二级课程）
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$finalSortedList = [];
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foreach ($level1Items as $item) {
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$finalSortedList[] = $item;
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// 如果是目录，且有子课程，将子课程排序后追加
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if ($item['type'] == 2 && isset($childrenGroups[$item['id']])) {
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$children = $childrenGroups[$item['id']];
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// 子课程排序规则：sort升序 -> createtime升序
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usort($children, function($a, $b) {
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if ($a['sort'] != $b['sort']) {
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return $a['sort'] - $b['sort'];
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}
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return strcmp($a['createtime'], $b['createtime']);
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});
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$finalSortedList = array_merge($finalSortedList, $children);
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}
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}
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// 6. 找到当前课程在排序列表中的位置
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$currentItemId = $courseIdToItemId[$courseId] ?? null;
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$currentIndex = -1;
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foreach ($finalSortedList as $index => $item) {
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if ($item['id'] == $currentItemId) {
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$currentIndex = $index;
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break;
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}
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}
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// 7. 查找下一个课程（跳过目录，只找type=1的）
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$nextCourse = null;
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$listCount = count($finalSortedList);
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for ($i = $currentIndex + 1; $i < $listCount; $i++) {
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$candidate = $finalSortedList[$i];
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if ($candidate['type'] == 1) { // 只取课程
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$nextCourse = $candidate;
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break;
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}
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}
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if (!$nextCourse) {
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return $this->success('');
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}
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// 8. 关联课程详情并返回
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$nextCourseInfo = $this->courseModel->get($nextCourse['course_id']);
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if (!$nextCourseInfo) {
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return $this->success();
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}
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// 整理返回字段
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$result = $nextCourseInfo->visible(['name', 'column_id', 'cover', 'id', 'updatetime', 'views', 'type', 'type_text', 'status', 'pay_type', 'no'])->toArray();
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$result['column_id'] = $columnId;
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return $this->success("获取成功", $result);
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}
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}
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