Update AoC leaderboard upload ot use new paste service

bot/exts/advent_of_code/_helpers.py

@@ -11,6 +11,7 @@
 import arrow
 import discord
 from discord.ext import commands
+from pydis_core.utils import paste_service
 
 import bot
 from bot.bot import SirRobin
@@ -19,9 +20,6 @@
 
 log = logging.getLogger(__name__)
 
-PASTE_URL = "https://paste.pythondiscord.com/documents"
-RAW_PASTE_URL_TEMPLATE = "https://paste.pythondiscord.com/raw/{key}"
-
 # Base API URL for Advent of Code Private Leaderboards
 AOC_API_URL = "https://adventofcode.com/{year}/leaderboard/private/view/{leaderboard_id}.json"
 AOC_REQUEST_HEADER = {"user-agent": "PythonDiscord AoC Event Bot"}
@@ -289,18 +287,20 @@ async def _fetch_leaderboard_data() -> dict[str, Any]:
 
 async def _upload_leaderboard(leaderboard: str) -> str:
     """Upload the full leaderboard to our paste service and return the URL."""
-    async with aiohttp.request("POST", PASTE_URL, data=leaderboard) as resp:
-        try:
-            resp_json = await resp.json()
-        except Exception:
-            log.exception("Failed to upload full leaderboard to paste service")
-            return ""
-
-    if "key" in resp_json:
-        return RAW_PASTE_URL_TEMPLATE.format(key=resp_json["key"])
-
-    log.error(f"Unexpected response from paste service while uploading leaderboard {resp_json}")
-    return ""
+    file = paste_service.PasteFile(content=leaderboard)
+    try:
+        paste = await paste_service.send_to_paste_service(
+            files=[file],
+            http_session=aiohttp.ClientSession()
+        )
+    except paste_service.PasteTooLongError:
+        log.exception("Leaderboard too long to upload to paste site")
+        return ""
+    except paste_service.PasteUploadError:
+        log.exception("Failed to upload full leaderboard to paste service")
+        return ""
+
+    return paste.link
 
 
 def _get_top_leaderboard(full_leaderboard: str) -> str: