Add hash checking to TT downloading

telegram_downloader_bot/main.py

@@ -56,7 +56,7 @@ async def message_handler(_, message: Message):
         msg = f"Downloading video {i+1}/{len(urls)}..."
         log.info(msg)
         await message.reply_text(msg)
-        utils.download_tt_video(settings.storage, url)
+        utils.download_tt_video(url)
 
     await message.reply_text("Done.")
 
@@ -67,7 +67,7 @@ async def media_handler(client, message: Message):
 
     await message.reply_text("Downloading media...")
 
-    utils.handle_media_message_contents(settings.storage, client, message)
+    utils.handle_media_message_contents(client, message)
 
 
 if __name__ == "__main__":

telegram_downloader_bot/security.py

@@ -7,12 +7,12 @@ from telegram_downloader_bot.settings import settings
 def protected(func):
     @wraps(func)
     async def wrapper(client, message):
-        if int(message.from_user.id) not in allowed_ids:
+        if int(message.from_user.id) not in settings.allowed_ids_list:
             log.warning(
                 f"User with ID {message.from_user.id} attempted"
                 "to text this bot!")
             log.info(
-                f"Only users allowed are: {' '.join(allowed_ids)}")
+                f"Only users allowed are: {' '.join(settings.allowed_ids_list)}")
             return await message.reply_text("You are not on the list!")
         return await func(client, message)
     return wrapper

telegram_downloader_bot/utils.py

@@ -1,11 +1,15 @@
 import os
+import pickle
 import re
 
 from datetime import datetime
+from hashlib import sha256
 from pyrogram import Client
 from pyrogram.types import Message
 from tiktok_downloader import snaptik
 
+from telegram_downloader_bot.settings import settings
+
 
 def sanitize_name(input: str) -> str:
     """Sanize string by removing non aplhanumeric characters and spaces."""
@@ -14,7 +18,7 @@ def sanitize_name(input: str) -> str:
     return output
 
 
-def get_user_folder(storage_path: os.path, message: Message) -> os.path:
+def get_user_folder(message: Message) -> os.path:
     """ Determine folder name used to save the media to. Depending on
     which type of message (forwarded, direct) detect that person's
     or group's name."""
@@ -47,19 +51,18 @@ def get_user_folder(storage_path: os.path, message: Message) -> os.path:
     # Sanitize the folder name
     user_folder_name = sanitize_name(user_folder_name)
 
-    user_folder = os.path.join(storage_path, "telegram", user_folder_name)
+    user_folder = os.path.join(settings.storage, "telegram", user_folder_name)
     os.makedirs(user_folder, exist_ok=True)
     return user_folder
 
 
-async def handle_media_message_contents(storage_path: os.path,
-                                        client: Client,
+async def handle_media_message_contents(client: Client,
                                         message: Message):
     """Detect what kind of media is being sent over from the user.
     Based on that, determine the correct file extension and save
     that media."""
 
-    user_folder = get_user_folder(storage_path, message)
+    user_folder = get_user_folder(message)
 
     # Handle documents
     if message.document:
@@ -94,7 +97,35 @@ async def handle_media_message_contents(storage_path: os.path,
         await message.reply_text("Unknown media type!")
 
 
-def download_tt_video(storage_path: str, url: str) -> None:
+def get_tt_hashes() -> set:
+    if not os.path.exists(settings.tt_hash_file):
+        return set()
+
+    with open(settings.tt_hash_file, "rb+") as f:
+        all_tt_hashes: set = pickle.load(f)
+    print(all_tt_hashes)
+    return all_tt_hashes
+
+
+def add_to_hashes(new_hash: str) -> None:
+    all_tt_hashes = get_tt_hashes()
+    all_tt_hashes.add(new_hash)
+    save_tt_hashes(all_tt_hashes)
+
+
+def save_tt_hashes(hashes: set) -> None:
+    with open(settings.tt_hash_file, "wb+") as f:
+        pickle.dump(hashes,
+                    f,
+                    protocol=pickle.HIGHEST_PROTOCOL)
+
+
+def check_if_tt_downloaded(tt_hash: str) -> bool:
+    all_tt_hashes = get_tt_hashes()
+    return tt_hash in all_tt_hashes
+
+
+def download_tt_video(url: str) -> str:
     """Downloads tiktok video from a given URL.
     Makes sure the video integrity is correct."""
 
@@ -103,14 +134,24 @@ def download_tt_video(storage_path: str, url: str) -> None:
 
     for video in videos:
         video_filename = now.strftime("video-tiktok-%Y-%m-%d_%H-%M-%S.mp4")
-        video_filepath: os.path = os.path.join(storage_path,
+        video_filepath: os.path = os.path.join(settings.storage,
                                                "tiktok",
                                                video_filename)
         video_content = video.download().getbuffer()
 
+        video_hash = sha256(video_content).hexdigest()
+        print(video_hash)
+
+        if check_if_tt_downloaded(video_hash):
+            return "Already downloaded"
+
         with open(video_filepath, "wb") as f:
             f.write(video_content)
 
+        add_to_hashes(video_hash)
+
+        return "Downloaded ok"
+
 
 def make_fs(storaga_path: str) -> None:
     os.makedirs(os.path.join(storaga_path, "tiktok"), exist_ok=True)