Add greetings extension

db/Greetings.py

@@ -0,0 +1,25 @@
+from discord import Embed
+
+from db import Base
+from sqlalchemy import Column, Integer, Text, Boolean, BigInteger
+
+
+class Greetings(Base):
+    __tablename__ = "greetings"
+    id = Column(Integer, primary_key=True)
+    join_message = Column(Text, nullable=False, default="")
+    join_enable = Column(Boolean, nullable=False, default=False)
+    leave_message = Column(Text, nullable=False, default="")
+    leave_enable = Column(Boolean, nullable=False, default=False)
+    guild = Column(BigInteger, nullable=False)
+
+    def __init__(self, guild: int):
+        self.guild = guild
+
+    def join_embed(self, guild_name: str,  user: str):
+        embed = Embed()
+        embed.add_field(name=f"Welcome to {guild_name} !", value=self.join_message.format(user))
+        return embed
+
+    def leave_msg(self, user: str):
+        return self.leave_message.format(user)

db/__init__.py

@@ -6,4 +6,5 @@ engine = create_engine(config.get("db"))
 Session = sessionmaker(bind=engine)
 Base = declarative_base()
 from db.Task import Task
+from db.Greetings import Greetings
 Base.metadata.create_all(engine)

extensions/__init__.py

@@ -5,3 +5,4 @@ bot.load_extension("extensions.extension")
 bot.load_extension("extensions.purge")
 bot.load_extension("extensions.poll")
 bot.load_extension("extensions.reminders")
+bot.load_extension("extensions.greetings")

extensions/greetings.py

@@ -0,0 +1,115 @@
+from discord.ext import commands
+from discord import Member, Embed
+from discord.ext.commands import BadArgument
+
+from administrator.logger import logger
+from administrator import db, config
+
+
+def check_greetings_message_type(message_type):
+    if message_type not in ["join", "leave"]:
+        raise BadArgument()
+
+
+extension_name = "greetings"
+logger = logger.getChild(extension_name)
+
+
+class Greetings(commands.Cog):
+    def __init__(self, bot: commands.Bot):
+        self.bot = bot
+
+    @commands.group("greetings", pass_context=True)
+    @commands.guild_only()
+    @commands.has_permissions(manage_guild=True)
+    async def greetings(self, ctx: commands.Context):
+        if ctx.invoked_subcommand is None:
+            await ctx.invoke(self.greetings_help)
+
+    @greetings.group("help", pass_context=True)
+    async def greetings_help(self, ctx: commands.Context):
+        embed = Embed(title="greetings help")
+        embed.add_field(name="set <join/leave> <message>", value="Set the greetings message\n"
+                                                                 "`{}` will be replace by the username",
+                        inline=False)
+        embed.add_field(name="show <join/leave>", value="Show the greetings message", inline=False)
+        embed.add_field(name="toggle <join/leave>", value="Enable or disable the greetings message", inline=False)
+        await ctx.send(embed=embed)
+
+    @greetings.group("set", pass_context=True)
+    async def greetings_set(self, ctx: commands.Context, message_type: str):
+        check_greetings_message_type(message_type)
+        message = ctx.message.content.replace(config.get("prefix")+"greetings set " + message_type, "").strip()
+        s = db.Session()
+        m = s.query(db.Greetings).filter(db.Greetings.guild == ctx.guild.id).first()
+        if not m:
+            m = db.Greetings(ctx.guild.id)
+            s.add(m)
+        setattr(m, message_type+"_enable", True)
+        setattr(m, message_type+"_message", message)
+        s.commit()
+        await ctx.message.add_reaction("\U0001f44d")
+
+    @greetings.group("show", pass_context=True)
+    async def greetings_show(self, ctx: commands.Context, message_type: str):
+        check_greetings_message_type(message_type)
+        s = db.Session()
+        m = s.query(db.Greetings).filter(db.Greetings.guild == ctx.guild.id).first()
+        s.close()
+        if not m:
+            await ctx.send(f"No {message_type} message set !")
+        else:
+            if message_type == "join":
+                await ctx.send(embed=m.join_embed(ctx.guild.name, str(ctx.message.author)))
+            else:
+                await ctx.send(m.leave_msg(str(ctx.message.author)))
+
+    @greetings.group("toggle", pass_context=True)
+    async def greetings_toggle(self, ctx: commands.Context, message_type: str):
+        check_greetings_message_type(message_type)
+        s = db.Session()
+        m = s.query(db.Greetings).filter(db.Greetings.guild == ctx.guild.id).first()
+        if not m:
+            await ctx.send(f"No {message_type} message set !")
+        else:
+            setattr(m, message_type+"_enable", not getattr(m, message_type+"_enable"))
+            s.commit()
+            await ctx.send(f"{message_type.title()} message is " +
+                           ("enable" if getattr(m, message_type+"_enable") else "disable"))
+        s.close()
+
+    @commands.Cog.listener()
+    async def on_member_join(self, member: Member):
+        s = db.Session()
+        m = s.query(db.Greetings).filter(db.Greetings.guild == member.guild.id).first()
+        s.close()
+        if m and m.join_enable:
+            await member.send(embed=m.join_embed(member.guild.name, str(member)))
+
+    @commands.Cog.listener()
+    async def on_member_remove(self, member: Member):
+        s = db.Session()
+        m = s.query(db.Greetings).filter(db.Greetings.guild == member.guild.id).first()
+        s.close()
+        if m and m.leave_enable:
+            await member.guild.system_channel.send(m.leave_msg(str(member)))
+
+
+def setup(bot):
+    logger.info(f"Loading...")
+    try:
+        bot.add_cog(Greetings(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("Greetings")
+    except Exception as e:
+        logger.error(f"Error unloading: {e}")
+    else:
+        logger.info(f"Unload successful")

extensions/help.py

@@ -1,5 +1,5 @@
 from discord.ext import commands
-from discord.ext.commands import CommandNotFound, MissingRequiredArgument, BadArgument
+from discord.ext.commands import CommandNotFound, MissingRequiredArgument, BadArgument, MissingPermissions
 
 from administrator.logger import logger
 from administrator.check import NotOwner
@@ -24,7 +24,7 @@ class Help(commands.Cog):
             await ctx.message.add_reaction("\u2753")
         elif isinstance(error, MissingRequiredArgument) or isinstance(error, BadArgument):
             await ctx.message.add_reaction("\u274C")
-        elif isinstance(error, NotOwner):
+        elif isinstance(error, NotOwner) or isinstance(error, MissingPermissions):
             await ctx.message.add_reaction("\u274C")
         else:
             await ctx.send("An error occurred !")

extensions/reminders.py

@@ -3,7 +3,7 @@ from datetime import datetime, timedelta
 
 from discord.ext import commands
 from discord import Embed
-from discord.ext.commands import CommandNotFound, BadArgument
+from discord.ext.commands import BadArgument
 from discord.ext import tasks
 
 from administrator.logger import logger
@@ -32,7 +32,7 @@ class Reminders(commands.Cog):
     @commands.group("reminder", pass_context=True)
     async def reminder(self, ctx: commands.Context):
         if ctx.invoked_subcommand is None:
-            raise CommandNotFound()
+            await ctx.invoke(self.reminder_help)
 
     @reminder.group("help", pass_context=True)
     async def reminder_help(self, ctx: commands.Context):