From 3a463e3af99f1723058f4ba2ab5e96732c1d1f6b Mon Sep 17 00:00:00 2001
From: flifloo <flifloo@gmail.com>
Date: Tue, 3 Nov 2020 15:47:51 +0100
Subject: [PATCH] Add tomuss extension

---
 db/Tomuss.py           |  16 ++++++
 db/__init__.py         |   1 +
 extensions/__init__.py |   1 +
 extensions/tomuss.py   | 124 +++++++++++++++++++++++++++++++++++++++++
 requirements.txt       |   2 +
 5 files changed, 144 insertions(+)
 create mode 100644 db/Tomuss.py
 create mode 100644 extensions/tomuss.py

diff --git a/db/Tomuss.py b/db/Tomuss.py
new file mode 100644
index 0000000..3892645
--- /dev/null
+++ b/db/Tomuss.py
@@ -0,0 +1,16 @@
+from datetime import datetime
+
+from db import Base
+from sqlalchemy import Column, BigInteger, String, DateTime
+
+
+class Tomuss(Base):
+    __tablename__ = "tomuss"
+    user_id = Column(BigInteger, primary_key=True)
+    url = Column(String, nullable=False)
+    last = Column(DateTime, nullable=False)
+
+    def __init__(self, user_id: int, url: str, last: datetime):
+        self.user_id = user_id
+        self.url = url
+        self.last = last
diff --git a/db/__init__.py b/db/__init__.py
index 620746a..a983286 100644
--- a/db/__init__.py
+++ b/db/__init__.py
@@ -13,4 +13,5 @@ from db.Polls import Polls
 from db.Warn import Warn
 from db.WarnAction import WarnAction
 from db.InviteRole import InviteRole
+from db.Tomuss import Tomuss
 Base.metadata.create_all(engine)
diff --git a/extensions/__init__.py b/extensions/__init__.py
index b679308..2c84dbe 100644
--- a/extensions/__init__.py
+++ b/extensions/__init__.py
@@ -14,3 +14,4 @@ bot.load_extension("extensions.tex")
 bot.load_extension("extensions.invite")
 bot.load_extension("extensions.speak")
 bot.load_extension("extensions.utils")
+bot.load_extension("extensions.tomuss")
diff --git a/extensions/tomuss.py b/extensions/tomuss.py
new file mode 100644
index 0000000..704dff8
--- /dev/null
+++ b/extensions/tomuss.py
@@ -0,0 +1,124 @@
+import re
+from datetime import datetime
+from time import mktime, struct_time
+
+from discord import Embed, Forbidden
+from discord.ext import commands, tasks
+from discord.ext.commands import BadArgument
+from feedparser import parse
+
+import db
+from administrator.logger import logger
+
+
+extension_name = "tomuss"
+logger = logger.getChild(extension_name)
+url_re = re.compile(r"https://tomuss\.univ-lyon1\.fr/S/[0-9]{4}/[a-zA-Z]+/rss/.+")
+
+
+class Tomuss(commands.Cog):
+    def __init__(self, bot: commands.Bot):
+        self.bot = bot
+        self.tomuss_loop.start()
+
+    def description(self):
+        return "PCP Univ Lyon 1"
+
+    @commands.group("tomuss", pass_context=True)
+    async def tomuss(self, ctx: commands.Context):
+        if ctx.invoked_subcommand is None:
+            await ctx.invoke(self.tomuss_help)
+
+    @tomuss.group("help", pass_context=True)
+    async def tomuss_help(self, ctx: commands.Context):
+        embed = Embed(title="Tomuss help")
+        embed.add_field(name="tomuss set <url>", value="Set your tomuss RSS feed", inline=False)
+        embed.add_field(name="tomuss unset", value="Unset your tomuss RSS feed", inline=False)
+        await ctx.send(embed=embed)
+
+    @tomuss.group("set", pass_context=True)
+    async def tomuss_set(self, ctx: commands.Context, url: str):
+        if not url_re.fullmatch(url):
+            raise BadArgument()
+        entries = parse(url).entries
+
+        if not entries:
+            raise BadArgument()
+        last = datetime.fromtimestamp(mktime(sorted(entries, key=lambda e: e.published_parsed)[0].published_parsed))
+
+        s = db.Session()
+        t = s.query(db.Tomuss).get(ctx.author.id)
+        if t:
+            t.url = url
+            t.last = last
+        else:
+            t = db.Tomuss(ctx.author.id, url, last)
+        s.add(t)
+        s.commit()
+        s.close()
+
+        await ctx.message.add_reaction("\U0001f44d")
+
+    @tomuss.group("unset", pass_context=True)
+    async def tomuss_unset(self, ctx: commands.Context):
+        s = db.Session()
+        t = s.query(db.Tomuss).get(ctx.author.id)
+        if not t:
+            raise BadArgument()
+        s.delete(t)
+        s.commit()
+        s.close()
+        await ctx.message.add_reaction("\U0001f44d")
+
+    @tasks.loop(minutes=5)
+    async def tomuss_loop(self):
+        s = db.Session()
+
+        for t in s.query(db.Tomuss).all():
+            u = await self.bot.fetch_user(t.user_id)
+            if not u:
+                s.delete(t)
+                s.commit()
+                continue
+
+            last = t.last.utctimetuple()
+            entries = list(filter(lambda e: e.published_parsed > last,
+                                  sorted(parse(t.url).entries, key=lambda e: e.published_parsed)))
+            if entries:
+                embed = Embed(title="Tomuss update !")
+                for e in entries:
+                    embed.add_field(name=e.title,
+                                    value=e.summary.replace("<br />", "\n").replace("<b>", "**").replace("</b>", "**"))
+                try:
+                    await u.send(embed=embed)
+
+                    t.last = datetime.fromtimestamp(mktime(entries[-1].published_parsed))
+                    s.add(t)
+                except Forbidden:
+                    s.delete(t)
+                s.commit()
+
+        s.close()
+
+    def cog_unload(self):
+        self.tomuss_loop.stop()
+
+
+def setup(bot):
+    logger.info(f"Loading...")
+    try:
+        bot.add_cog(Tomuss(bot))
+    except Exception as e:
+        logger.error(f"Error loading: {e}")
+    else:
+        logger.info(f"Load successful")
+
+
+def teardown(bot):
+    logger.info(f"Unloading...")
+    try:
+        bot.remove_cog("Tomuss")
+    except Exception as e:
+        logger.error(f"Error unloading: {e}")
+    else:
+        logger.info(f"Unload successful")
diff --git a/requirements.txt b/requirements.txt
index 4b9b3ea..56d1dbc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,9 @@ attrs==20.2.0
 chardet==3.0.4
 discord==1.0.1
 discord.py==1.5.1
+feedparser==6.0.2
 idna==2.10
 multidict==4.7.6
+sgmllib3k==1.0.0
 SQLAlchemy==1.3.20
 yarl==1.5.1