Upload weekly autoban report to pastebin

This fixes #2391 and solves BOT-3CR which was caused by the weekly report being longer than 2000 characters.

Instead of posting the entire report to Discord, it is now upload to the pastebin, and uploaded as a text file to the channel, so people can use what they prefer.

1 files changed, 20 insertions, 3 deletions

diff --git a/bot/exts/filtering/filtering.py b/bot/exts/filtering/filtering.py
index 8e7ba7476..aa53cab26 100644
--- a/bot/exts/filtering/filtering.py
+++ b/bot/exts/filtering/filtering.py
@@ -1,4 +1,5 @@
 import datetime
+import io
 import json
 import re
 import unicodedata
@@ -46,6 +47,7 @@ from bot.pagination import LinePaginator
 from bot.utils.channel import is_mod_channel
 from bot.utils.lock import lock_arg
 from bot.utils.message_cache import MessageCache
+from bot.utils.services import PasteTooLongError, PasteUploadError, send_to_paste_service
 
 log = get_logger(__name__)
 
@@ -1400,7 +1402,7 @@ class Filtering(Cog):
         """
         Send a list of auto-infractions added in the last 7 days to the specified channel.
 
-        If `channel` is not specified, it is sent to #mod-meta.
+        If `channel` is not specified, the report is sent to #mod-meta instead.
         """
         log.trace("Preparing weekly auto-infraction report.")
         seven_days_ago = arrow.utcnow().shift(days=-7)
@@ -1435,9 +1437,24 @@ class Filtering(Cog):
         if len(lines) == 1:
             lines.append("Nothing to show")
 
-        await channel.send("\n\n".join(lines))
-        log.info("Successfully sent auto-infraction report.")
+        report = "\n\n".join(lines)
+        try:
+            await channel.send(report)
+        except discord.HTTPException as e:
+            if e.code != 50035:  # Content too long
+                raise
+            report = discord.utils.remove_markdown(report)
+            try:
+                paste_resp = await send_to_paste_service(report, extension="txt")
+            except (ValueError, PasteTooLongError, PasteUploadError):
+                paste_resp = ":warning: Failed to upload report to paste service"
+            file_buffer = io.StringIO(report)
+            await channel.send(
+                f"**{lines[0]}**\n\n{paste_resp}",
+                file=discord.File(file_buffer, "last_weeks_autoban_filters.txt"),
+            )
 
+        log.info("Successfully sent auto-infraction report.")
     # endregion
 
     async def cog_unload(self) -> None: