now detects existing files

main.go

@@ -64,6 +64,24 @@ func main() {
 		}
 	}
 
+	files, err := os.ReadDir(uploadFolder)
+	if err != nil {
+		panic(err)
+	}
+
+	if len(files) != 0 {
+		for _, file := range files {
+			if file.IsDir() {
+				continue
+			}
+
+			_, err = dbpool.Exec(context.Background(), "insert into videos(filepath) values($1)", fmt.Sprintf("%s/%s", uploadFolder, file.Name()))
+			if err != nil {
+				log.Panicf("main: %v\n", err)
+			}
+		}
+	}
+
 	router := gin.Default()
 	router.SetTrustedProxies(nil)