添加接口：判断视频文件是否存在

@@ -249,5 +249,42 @@ router.post('/recording', async function (req, res, next) {
 
 })
 
+// 判断该视频文件是否存在
+router.post('/fileExists', async function (req, res, next) {
+    let fileConfig = new MediaCreat().getConfigFileJson()
+    const { PROJECTCATALOG } = JSON.parse(fileConfig)
+    const body = req.body
+    if(!body.siteId) {
+        res.send({ code: 2,message:"机构编码无效" });
+        return
+    }
+    if(!body.classId) {
+        res.send({ code: 3,message:"课堂号无效" });
+        return
+    }
+    let timeDir = PROJECTCATALOG + "/media/" + body.siteId
+
+    if (!fs.existsSync(timeDir)) {
+        res.send({ code: 4,message:"目录未生成" });
+        return
+    }
+    const timeFiles = fs.readdirSync(timeDir)
+    let classIdStr = `${body.classId}.mp4`
+    let isFile = false
+    for(let i=0;i<timeFiles.length;i++){
+        let classDir = `${timeDir}/${timeFiles[i]}`
+        const classFiles = fs.readdirSync(classDir)
+        if(classFiles.indexOf(classIdStr) > -1){
+            isFile = true
+            break
+        }
+    }
+    if(isFile){
+        res.send({ code: 0,message:"文件已生成" });
+    }else {
+        res.send({ code: 1,message:"文件未生成" });
+    }
+
+})
 
 module.exports = router;