add resend_after command

main.py

@@ -1,5 +1,6 @@
 import asyncio
 import base64
+import datetime
 import logging
 import os
 import random
@@ -143,6 +144,35 @@ async def check_updates():
                 await sleep(1)
 
 
+@dp.message(filters.Command('resend_after'), ChatFilter)
+async def resend_after(msg: Message):
+    try:
+        timestamp = int(msg.text.split()[1])
+    except:
+        traceback.print_exc()
+        await msg.reply('Invalid timestamp or not provided')
+        return
+
+    async with redis.lock('e621:update'):
+        tag_list = [t.decode() for t in await redis.smembers('e621:subs')]
+        for i, tag in enumerate(tag_list):
+            await msg.reply(f'Checking tag <b>{tag}</b> ({i+1}/{len(tag_list)}')
+            posts = []
+            page = 1
+            while True:
+                page_posts = await e621.get_posts(tag, page)
+                if not page_posts:
+                    break
+                for post in page_posts:
+                    if datetime.datetime.fromisoformat(post.created_at).timestamp() < timestamp:
+                        break
+                    posts.append(post)
+                page += 1
+            for post in posts[::-1]:
+                await send_post(post, tag_list)
+    await msg.reply('Finished')
+
+
 @dp.message(filters.Command('add'), ChatFilter)
 async def add_tag(msg: Message):
     args = ' '.join(msg.text.split()[1:])