From bb48c5e6fea14bc8ec42b1188ceb5008fa259463 Mon Sep 17 00:00:00 2001
From: ks129 <45097959+ks129@users.noreply.github.com>
Date: Mon, 20 Apr 2020 11:46:17 +0300
Subject: Added helper function `News.sync_maillists`

Function sync maillists listing with API, that hold IDs of message that have news. PEPs handling is over RSS, so this will added manually in this function.
---
 bot/cogs/news.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/bot/cogs/news.py b/bot/cogs/news.py
index 8eb8689c2..c850b4192 100644
--- a/bot/cogs/news.py
+++ b/bot/cogs/news.py
@@ -2,12 +2,35 @@ from discord.ext.commands import Cog
 
 from bot.bot import Bot
 
+MAIL_LISTS = [
+    "python-ideas",
+    "python-announce-list",
+    "pypi-announce"
+]
+
 
 class News(Cog):
     """Post new PEPs and Python News to `#python-news`."""
 
     def __init__(self, bot: Bot):
         self.bot = bot
+        self.bot.loop.create_task(self.sync_maillists())
+
+    async def sync_maillists(self) -> None:
+        """Sync currently in-use maillists with API."""
+        # Wait until guild is available to avoid running before API is ready
+        await self.bot.wait_until_guild_available()
+
+        response = await self.bot.api_client.get("bot/bot-settings/news")
+        for mail in MAIL_LISTS:
+            if mail not in response["data"]:
+                response["data"][mail] = []
+
+        # Because we are handling PEPs differently, we don't include it to mail lists
+        if "pep" not in response["data"]:
+            response["data"]["pep"] = []
+
+        await self.bot.api_client.put("bot/bot-settings/news", json=response)
 
 
 def setup(bot: Bot) -> None:
-- 
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