From 3c07500ec0bc788c46a58bad2ac7417cd5978736 Mon Sep 17 00:00:00 2001
From: blank X <blankie@nixnetmail.com>
Date: Sat, 9 Oct 2021 20:06:59 +0700
Subject: [PATCH] Add video attributes

---
 redditbot.py | 39 ++++++++++++++++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 5 deletions(-)

diff --git a/redditbot.py b/redditbot.py
index fcbff13..3ea0656 100644
--- a/redditbot.py
+++ b/redditbot.py
@@ -9,6 +9,7 @@ import tempfile
 import functools
 import mimetypes
 import traceback
+from decimal import Decimal
 from itertools import zip_longest
 from urllib.parse import urlparse, urlunparse, urljoin
 import yaml
@@ -18,6 +19,7 @@ import aiocron
 from bs4 import BeautifulSoup
 from telethon import TelegramClient, events
 from telethon.utils import chunks, is_list_like
+from telethon.tl.types import DocumentAttributeVideo
 
 mimetypes.init(['mime.types'])
 with open('config.yaml') as file:
@@ -193,11 +195,8 @@ async def main():
         await add_chat(chat, send_to_chats[chat])
 
     async def _start_broadcast(text, file, chats):
-        uploaded_files = []
-        for i in file or []:
-            uploaded_files.append(await client.upload_file(i))
         for chat in chats:
-            for i in chunks(zip_longest(text, uploaded_files), 10):
+            for i in chunks(zip_longest(text, file or []), 10):
                 j, k = zip(*i)
                 if not any(k):
                     k = None
@@ -207,7 +206,37 @@ async def main():
                     if len(j) == 1 and len(k) == 1:
                         j = j[0]
                         k = k[0]
-                await client.send_message(chat, j, file=k, link_preview=False)
+                attributes = []
+                mimetype = await _get_file_mimetype(k)
+                if mimetype.startswith('video/'):
+                    try:
+                        data = await _get_video_data(k)
+                        duration = int(Decimal(data['format']['duration']))
+                        w = h = None
+                        for l in data['streams']:
+                            if l['codec_type'] != 'video':
+                                continue
+                            w = l['width']
+                            h = l['height']
+                            break
+                    except Exception:
+                        logging.exception('Exception when getting video data')
+                    else:
+                        attributes.append(DocumentAttributeVideo(duration, w, h, supports_streaming=mimetype == 'video/mp4'))
+                await client.send_message(chat, j, file=k, link_preview=False, attributes=attributes)
+
+    async def _get_video_data(filename):
+        proc = await asyncio.create_subprocess_exec('ffprobe', '-show_format', '-show_streams', '-print_format', 'json', filename, stdout=asyncio.subprocess.PIPE)
+        stdout, _ = await proc.communicate()
+        data = json.loads(stdout)
+        if data.get('format') and 'duration' not in data['format']:
+            with tempfile.NamedTemporaryFile() as tempf:
+                proc = await asyncio.create_subprocess_exec('ffmpeg', '-an', '-sn', '-i', filename, '-c', 'copy', '-f', 'matroska', tempf.name)
+                await proc.communicate()
+                ndata = await _get_video_data(tempf.name)
+                if ndata.get('format') and 'duration' in ndata['format']:
+                    data['format']['duration'] = ndata['format']['duration']
+        return data
 
     async def _download_file(filename, url):
         print(url)