update video.py

fixed the bug of repetitive videos being played, now the program stores the previously played videos

Author: thewhitetulip

video.py

@@ -1,4 +1,3 @@
-#!/usr/bin/python
 import os
 import subprocess
 import random
@@ -9,29 +8,69 @@
 def set_path():
 	if not os.path.exists("./path.txt"):
 		path = raw_input("Enter the path where videos are stored")
-		if path !="":
-			try:
-				f=open("./path.txt","w")
-			except(IOError):
-				print "Something is wrong with the file"
-				exit
-			f.write(path)
-			f.close()
+		path=path.lstrip().rstrip()
+		if os.path.exists(path):
+			if path !="":
+				try:
+					f=open("./path.txt","w")
+				except(IOError):
+					print "Something is wrong with the file"
+					exit()
+				finally:
+					print "file created on this path: "+path
+				f.write(path)
+				f.write("\n")
+				f.close()
+		else:
+			print "That path is invalid"
+	else:
+		return
 
-def play():	
+def listing():	
+#this function invokes the vlc media player to actually play a video
 	try:
 		f = open("./path.txt")
 	except(IOError):
 		print "Path invalid, please try again"
-		exit
+		exit()
+	
 	path = f.readline()
 	f.close()
 
+	path=path.lstrip().rstrip()
 	video_list = os.listdir(path)
-	os.chdir(path)
+	total_videos = len(video_list)
 
-	subprocess.Popen(["vlc", video_list[random.randint(0,len(video_list)-1)]])
+	if not os.path.exists("./list.txt"):
+		f=open("./list.txt","w")
+		num=random.randint(0,len(video_list)-1)
+		f.write("%s,"%(num))
+		f.close()
+	else:
+		f = open("./list.txt","r")
+		line = f.readline()
+		line = line.split(",")
+		num=0
+		if len(line)==total_videos: #when all the videos have been watched, truncate the file
+			print "all videos finished"
+			f=open("./list.txt","w")
+			f.close()
+		while True:
+			num=random.randint(0,len(video_list)-1)
+			if str(num) not in line:
+				break
+		f=open("./list.txt","a")
+		f.write("%s,"%(num))
+		print "written to file"
+		f.close()					
+
+	play(path, video_list, num)
+
+def play(path, video_list, num):
+	os.chdir(path)
+	subprocess.Popen(["vlc", video_list[num]])
+
 
 if __name__=="__main__":
 	set_path()
-	play()
+	listing()