Bot cleandb (#20)

* Initial Code

* Cleanup database commit

discordbot/cleanup_db_messages.py

@@ -0,0 +1,97 @@
+from config import config
+from titanembeds.database import DatabaseInterface, Guilds, Messages
+from titanembeds.commands import Commands
+import discord
+import aiohttp
+import asyncio
+import sys
+import logging
+import json
+from asyncio_extras import threadpool
+logging.basicConfig(filename='titanbot.log',level=logging.INFO,format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
+logging.getLogger('TitanBot')
+logging.getLogger('sqlalchemy')
+
+###########################
+#   Cleanup DB Messages   #
+#                         #
+# Cleans the database     #
+# messages store          #
+###########################
+
+class Titan(discord.Client):
+    def __init__(self):
+        super().__init__()
+        self.aiosession = aiohttp.ClientSession(loop=self.loop)
+        self.http.user_agent += ' TitanEmbeds-Bot'
+        self.database = DatabaseInterface(self)
+        self.command = Commands(self, self.database)
+
+    def _cleanup(self):
+        try:
+            self.loop.run_until_complete(self.logout())
+        except: # Can be ignored
+            pass
+        pending = asyncio.Task.all_tasks()
+        gathered = asyncio.gather(*pending)
+        try:
+            gathered.cancel()
+            self.loop.run_until_complete(gathered)
+            gathered.exception()
+        except: # Can be ignored
+            pass
+
+    def run(self):
+        try:
+            self.loop.run_until_complete(self.start(config["bot-token"]))
+        except discord.errors.LoginFailure:
+            print("Invalid bot token in config!")
+        finally:
+            try:
+                self._cleanup()
+            except Exception as e:
+                print("Error in cleanup:", e)
+            self.loop.close()
+
+    async def on_ready(self):
+        print('Titan [DiscordBot] [UTILITY: Cleanup database messages]')
+        print('Logged in as the following user:')
+        print(self.user.name)
+        print(self.user.id)
+        print('------')
+
+        try:
+            await self.database.connect(config["database-uri"] + "?charset=utf8mb4")
+        except Exception:
+            self.logger.error("Unable to connect to specified database!")
+            traceback.print_exc()
+            await self.logout()
+            return
+
+        print("working on this...")
+        async with threadpool():
+            with self.database.get_session() as session:
+                guilds = session.query(Guilds).all()
+                for guild in guilds:
+                    print("id-{} snowflake-{} name-{}".format(guild.id, guild.guild_id, guild.name))
+                    try:
+                        channelsjson = json.loads(guild.channels)
+                    except:
+                        continue
+                    for channel in channelsjson:
+                        chanid = channel["id"]
+                        msgs = session.query(Messages).filter(Messages.channel_id == chanid).order_by(Messages.timestamp.desc()).offset(50).all()
+                        for msg in msgs:
+                            session.delete(msg)
+                    session.commit()
+        print("done!")
+        await self.logout()
+
+def main():
+    print("Starting...")
+    te = Titan()
+    te.run()
+    gc.collect()
+
+if __name__ == '__main__':
+    main()