check for duplicate images when admigger threads for banners/sidebar/badges are used

files/helpers/media.py

@@ -8,7 +8,7 @@ import requests
 import time
 from .const import *
 import gevent
-
+import imagehash
 
 def process_files():
 	body = ''
@@ -103,8 +103,36 @@ def process_image(filename=None, resize=0, trim=False):
 			i = ImageOps.exif_transpose(i)
 			i.save(filename, format="WEBP", method=6, quality=88)
 
-	if resize in (400,1200) and os.stat(filename).st_size > 1 * 1024 * 1024:
-		os.remove(filename)
-		abort(413)
+
+	if resize in (300,400,1200):
+		if os.stat(filename).st_size > 1 * 1024 * 1024:
+			os.remove(filename)
+			abort(413)
+
+		if resize == 1200:
+			path = f'files/assets/images/{SITE_NAME}/banners'
+		elif resize == 400:
+			path = f'files/assets/images/{SITE_NAME}/sidebar'
+		else:
+			path = f'files/assets/images/badges'
+
+		hashes = {}
+
+		for img in os.listdir(path):
+			if resize == 400 and img in ('256.webp','585.webp'): continue
+			img_path = f'{path}/{img}'
+			if img_path == filename: continue
+			img = Image.open(img_path)
+			i_hash = str(imagehash.phash(img))
+			if i_hash in hashes.keys():
+				print(hashes[i_hash], flush=True)
+				print(img_path, flush=True)
+			else: hashes[i_hash] = img_path
+
+		i = Image.open(filename)
+		i_hash = str(imagehash.phash(i))
+		if i_hash in hashes.keys():
+			os.remove(filename)
+			abort(417)
 
 	return filename

files/routes/errors.py

@@ -64,6 +64,10 @@ def error_415(e):
 	if request.headers.get("Authorization") or request.headers.get("xhr"): return {"error": "Please upload only Image, Video, or Audio files!"}, 415
 	else: return render_template('errors/415.html', err=True), 415
 
+@app.errorhandler(417)
+def error_417(e):
+	return {"error": "Image already exists!"}, 417
+
 @app.errorhandler(418)
 def error_418(e):
 	if request.headers.get("Authorization") or request.headers.get("xhr"):

requirements.txt

@@ -11,6 +11,7 @@ gevent
 gevent-websocket
 greenlet
 gunicorn
+imagehash
 lxml
 mistletoe
 matplotlib