From d23f35954484c2dcf142caf90411efb07901b892 Mon Sep 17 00:00:00 2001
From: Aljaz Ceru <aljaz@ceru.si>
Date: Thu, 4 Jan 2024 14:37:55 +0000
Subject: [PATCH] export chat history first commit

---
 chat-history-export.py | 58 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 chat-history-export.py

diff --git a/chat-history-export.py b/chat-history-export.py
new file mode 100644
index 0000000..702fb6f
--- /dev/null
+++ b/chat-history-export.py
@@ -0,0 +1,58 @@
+import os
+import json
+import datetime
+from telethon import TelegramClient, events, sync
+from settings import *
+import asyncio
+
+api_id = API_ID
+api_hash = API_HASH
+phone_number = PHONE_NUMBER
+client = TelegramClient('session_name', api_id, api_hash)
+
+import base64
+
+
+def serialize(obj):
+    """A custom serializer for non-serializable objects."""
+    if isinstance(obj, datetime.datetime):
+        return obj.isoformat()  # Convert datetime objects to ISO format string
+    elif isinstance(obj, bytes):
+        return base64.b64encode(obj).decode('utf-8')  # Convert bytes to base64 string
+    raise TypeError(f'Object of type {obj.__class__.__name__} is not JSON serializable')
+
+async def dump_chat_history(chat_id):
+    chat = await client.get_entity(chat_id)
+    chat_title = ''.join(e for e in chat.title if e.isalnum())
+
+    async for message in client.iter_messages(chat, reverse=True):
+        date_str = message.date.strftime('%Y-%m-%d')
+        directory = f'./{chat_title}/{date_str}'
+        os.makedirs(directory, exist_ok=True)
+        file_path = f'{directory}/messages.json'
+
+        with open(file_path, 'a') as file:
+            message_dict = message.to_dict()
+            # Serialize the message dict with the custom serialize function
+            json.dump(message_dict, file, default=serialize)
+            file.write('\n')
+
+async def main():
+    await client.start()
+    async for dialog in client.iter_dialogs():
+        if dialog.is_group or dialog.is_channel:
+            await dump_chat_history(dialog.id)
+    await client.stop()
+
+if __name__ == '__main__':
+    asyncio.run(main())
+
+
+async def main():
+    # Fetching all the chats
+    async for dialog in client.iter_dialogs():
+        if dialog.is_group or dialog.is_channel:
+            await dump_chat_history(dialog.id)
+
+with client:
+    client.loop.run_until_complete(main())