function getUserPaperDuration($uid, $courseId)
{
$tblUserSection = new DB_Haodu_UserSection();
$list = $tblUserSection->fetchAll("section_id", "where uid={$uid} and course_id={$courseId}");
if (!$list) {
return 0;
}
$sectionIds = $tblUserSection->columnRow($list, "section_id");
$tblPractiseAnswerHistory = new DB_Haodu_PractiseAnswerHistory();
$practiseList = $tblPractiseAnswerHistory->fetchAll("practise_id", "where uid={$uid} and section_id in (" . implode(",", $sectionIds) . ")");
if (!$practiseList) {
return 0;
}
$practiseIds = $tblPractiseAnswerHistory->columnRow($practiseList, "practise_id");
$tblCoursePractise = new DB_Haodu_CoursePractise();
$videoList = $tblCoursePractise->fetchAll("video_id", "where practise_id in (" . implode(",", $practiseIds) . ")");
if (!$videoList) {
return 0;
}
$videoIds = $tblCoursePractise->columnRow($videoList, "video_id");
$tblUserVideo = new DB_Haodu_UserVideo();
$videoList = $tblUserVideo->fetchAll("video_id", "where uid={$uid} and video_id in (" . implode(",", $videoIds) . ")");
if (!$videoList) {
return 0;
}
$videoIds = $tblCoursePractise->columnRow($videoList, "video_id");
$tblVideo = new DB_Haodu_CourseVideo();
$video = $tblVideo->scalar("sum(duration) as total_duration", "where id in (" . implode(',', $videoIds) . ")");
return (int) $video['total_duration'];
}
/**
* 用户与章节
*/
public function updateUserSection($uid, $sectionId, $courseId)
{
$tblUserSection = new DB_Haodu_UserSection();
$rs = $tblUserSection->scalar("id", "where uid={$uid} and section_id={$sectionId}", "");
if ($rs) {
$lastTime = time();
$tblUserSection->update($rs['id'], array('last_time' => $lastTime));
} else {
$data = array("uid" => $uid, "section_id" => $sectionId, "course_id" => $courseId);
$tblUserSection->insert($data);
}
}
