<?php

// 根据课程id获取课程详细信息
require_once ("../user_include.inc");

ErrorLogger::doOutput("Compass...ajax_get_course_detail.php....Start.", 0);

//获取参数
$unionId = ParamUtil::getRequestString("unionId");
$mediaId = ParamUtil::getRequestNumber("mediaId", 0);

//参数检查
if(empty($unionId) || empty($mediaId)) {
	$result["message"] = "参数错误！";
	responseNG($result);
}

//判断用户是否存在
$param = array();
$param['unionid'] = $unionId;
$param['delete_flg'] = false;
$userList = UserMst::getList($param,'id','desc', 0, 1);
if(empty($userList)) {
	$result["message"] = "用户不存在！";
	responseNG($result);
}

$userMst = $userList[0];

$result = array();

//判断视频是否存在
$courseMediaDat = CourseMediaDat::getById($mediaId);
if(empty($courseMediaDat)) {
	$result["message"] = "视频不存在！";
	responseNG($result);
}

//如果为合集视频获取对应的媒体列表
$courseId = "0";
$courseTitle = "";
$teacherName = "";
$teacherProfile = "";
$frontImage = "";
$courseComment = "";
$updateTime = "";
$viewCount = "0";
$price = "0";
$haveBuy = false;
$courseMediaList = array();

//单个视频
if($courseMediaDat->course_id == "0") {
	$courseMediaList[] = $courseMediaDat;
	$courseId = $courseMediaDat->course_id;
	$courseTitle = $courseMediaDat->title;
	$teacherName = $courseMediaDat->teacher;
	$teacherProfile = $courseMediaDat->teacher_profile;
	$frontImage = $courseMediaDat->front_image;
	$courseComment = $courseMediaDat->comment;
	$updateTime = $courseMediaDat->registration_date;
	$viewCount = $courseMediaDat->view_count;
	//是否购买本视频
	$courseMediaDat->haveBuy = false;
	//付费会员、教育局领导、学校负责人、班级负责人可以免费观看
	if($courseMediaDat->is_free || $userMst->is_member || $userMst->role == 4 || $userMst->school_owner || $userMst->class_owner) {
		$haveBuy = true;
	} else {
		if($courseMediaDat->is_free==false) {
			//收费课程的情况下，判断用户是否已经购买本课程
			$param = array();
			$param['user_id'] = $userMst->id;
			$param['media_id'] = $courseMediaDat->id;
			$param['status'] = 'SUCCESS';
			$param['delete_flg'] = false;
			$userMstBuyList = UserMediaDat::getList($param, "id", "desc", 0, 1);
			if(!empty($userMstBuyList)) {
				$haveBuy = true;
			}
		}
	}
} else {
	//合集视频
	$courseMst = CourseMst::getById($courseMediaDat->course_id);
	$courseId = $courseMediaDat->course_id;
	$courseTitle = $courseMst->title;
	$teacherName = $courseMst->teacher_name;
	$teacherProfile = $courseMst->teacher_profile;
	$frontImage = $courseMst->front_image;
	$courseComment = $courseMst->comment;
	$updateTime = $courseMst->registration_date;
	$viewCount = $courseMediaDat->view_count;
	$price = $courseMst->price;
	
	//是否已经购买判断
	$param = array();
	$param['course_id'] = $courseMediaDat->course_id;
	$param['delete_flg'] = false;
	$courseMediaList = CourseMediaDat::getList($param,'id','asc');
	
	//是否已经购买判断
	$param = array();
	$param['user_id'] = $userMst->id;
	$param['course_id'] = $courseMediaDat->course_id;
	$param['status'] = 'SUCCESS';
	$param['delete_flg'] = false;
	$userMstBuyList = UserMediaDat::getList($param,'id','asc');
	if($courseMst->price <= 0 || $userMst->is_member || $userMst->role == 4 || $userMst->school_owner || $userMst->class_owner) {
		$haveBuy = true;
	} else {
		if(!empty($userMstBuyList)) {
			$haveBuy = true;
		}
	}
}

//接口返回数据
$result["courseId"] = $courseId;
$result["courseTitle"] = $courseTitle;
$result["teacherName"] = $teacherName;
$result["teacherProfile"] = $teacherProfile;
$result["frontImage"] = $frontImage;
$result["courseComment"] = $courseComment;
$result["mediaCount"] = count($courseMediaList);
$result["updateTime"] = $updateTime;
$result["viewCount"] = $viewCount;
$result["price"] = $price;//合集价格
$result["haveBuy"] = $haveBuy;//是否已经购买（单个或者合集）
$result["mediaList"] = $courseMediaList;

ErrorLogger::doOutput("Compass...ajax_get_course_detail.php....End.", 0);


//返回结果
responseOK($result);

function responseNG($result) {
	$result = array("status"=>"NG", "result"=>$result);
	print json_encode($result);
	exit;
}
function responseOK($result) {
	$result = array("status"=>"OK", "result"=>$result);
	print json_encode($result);
	exit;
}
?>