[Core] Implemented missing checks, extended DB

The DB has been extended and now covers the functionality of the old Settings class of the previous version

core/bot.py

@@ -1,6 +1,6 @@
 from discord.ext import commands
 from collections import Counter
-from core.utils.helpers import JsonGuildDB
+from core.settings import CoreDB
 from enum import Enum
 import os
 
@@ -8,7 +8,7 @@ import os
 class Red(commands.Bot):
     def __init__(self, cli_flags, **kwargs):
         self._shutdown_mode = ExitCodes.CRITICAL
-        self.db = JsonGuildDB("core/data/settings.json",
+        self.db = CoreDB("core/data/settings.json",
                          autosave=True,
                          create_dirs=True)
 

core/checks.py

@@ -5,3 +5,67 @@ def is_owner(**kwargs):
     async def check(ctx):
         return await ctx.bot.is_owner(ctx.author, **kwargs)
     return commands.check(check)
+
+
+async def check_permissions(ctx, perms):
+    if await ctx.bot.is_owner(ctx.author):
+        return True
+    elif not perms:
+        return False
+    resolved = ctx.channel.permissions_for(ctx.author)
+
+    return all(getattr(resolved, name, None) == value for name, value in perms.items())
+
+
+def mod_or_permissions(**perms):
+    async def predicate(ctx):
+        has_perms_or_is_owner = await check_permissions(ctx, perms)
+        if ctx.guild is None:
+            return has_perms_or_is_owner
+        author = ctx.author
+        mod_role = ctx.bot.db.get_mod_role(ctx.guild)
+        admin_role = ctx.bot.db.get_admin_role(ctx.guild)
+        is_staff = mod_role in author.roles or admin_role in author.roles
+        is_guild_owner = author == ctx.guild.owner
+
+        return is_staff or has_perms_or_is_owner or is_guild_owner
+
+    return commands.check(predicate)
+
+
+def admin_or_permissions(**perms):
+    async def predicate(ctx):
+        has_perms_or_is_owner = await check_permissions(ctx, perms)
+        if ctx.guild is None:
+            return has_perms_or_is_owner
+        author = ctx.author
+        is_guild_owner = author == ctx.guild.owner
+        admin_role = ctx.bot.db.get_admin_role(ctx.guild)
+
+        return admin_role in author.roles or has_perms_or_is_owner or is_guild_owner
+
+    return commands.check(predicate)
+
+
+def guildowner_or_permissions(**perms):
+    async def predicate(ctx):
+        has_perms_or_is_owner = await check_permissions(ctx, perms)
+        if ctx.guild is None:
+            return has_perms_or_is_owner
+        is_guild_owner = ctx.author == ctx.guild.owner
+
+        return is_guild_owner or has_perms_or_is_owner
+
+    return commands.check(predicate)
+
+
+def guildowner():
+    return guildowner_or_permissions()
+
+
+def admin():
+    return admin_or_permissions()
+
+
+def mod():
+    return mod_or_permissions()

core/settings.py

@@ -1,17 +1,88 @@
+from core.utils.helpers import JsonGuildDB
+import discord
 import argparse
 
-# Do we even need a Settings class this time? To be decided
 
-
-class Settings:
-    def __init__(self):
-        args = {}
-        self.coowners = []
+class CoreDB(JsonGuildDB):
+    """
+    The central DB used by Red to store a variety
+    of settings, both global and guild specific
+    """
 
     def can_login(self):
         """Used on start to determine if Red is setup enough to login"""
         raise NotImplementedError
 
+    def get_admin_role(self, guild):
+        """Returns the guild's admin role
+
+        Returns None if not set or if the role
+        couldn't be retrieved"""
+        _id = self.get_all(guild, {}).get("admin_role", None)
+        return discord.utils.get(guild.roles, id=_id)
+
+    def get_mod_role(self, guild):
+        """Returns the guild's mod role
+
+        Returns None if not set or if the role
+        couldn't be retrieved"""
+        _id = self.get_all(guild, {}).get("mod_role", None)
+        return discord.utils.get(guild.roles, id=_id)
+
+    async def set_admin_role(self, role):
+        """Sets the admin role for the guild"""
+        if not isinstance(role, discord.Role):
+            raise TypeError("A valid Discord role must be passed.")
+        await self.set(role.guild, "admin_role", role.id)
+
+    async def set_mod_role(self, role):
+        """Sets the mod role for the guild"""
+        if not isinstance(role, discord.Role):
+            raise TypeError("A valid Discord role must be passed.")
+        await self.set(role.guild, "mod_role", role.id)
+
+    def get_global_whitelist(self):
+        """Returns the global whitelist"""
+        return self.get_global("whitelist", [])
+
+    def get_global_blacklist(self):
+        """Returns the global whitelist"""
+        return self.get_global("blacklist", [])
+
+    async def set_global_whitelist(self, whitelist):
+        """Sets the global whitelist"""
+        if not isinstance(list, whitelist):
+            raise TypeError("A list of IDs must be passed.")
+        await self.set_global("whitelist", whitelist)
+
+    async def set_global_blacklist(self, blacklist):
+        """Sets the global blacklist"""
+        if not isinstance(list, blacklist):
+            raise TypeError("A list of IDs must be passed.")
+        await self.set_global("blacklist", blacklist)
+
+    def get_guild_whitelist(self, guild):
+        """Returns the guild's whitelist"""
+        return self.get(guild, "whitelist", [])
+
+    def get_guild_blacklist(self, guild):
+        """Returns the guild's blacklist"""
+        return self.get(guild, "blacklist", [])
+
+    async def set_guild_whitelist(self, guild, whitelist):
+        """Sets the guild's whitelist"""
+        if not isinstance(guild, discord.Guild) or not isinstance(whitelist, list):
+            raise TypeError("A valid Discord guild and a list of IDs "
+                            "must be passed.")
+        await self.set(guild, "whitelist", whitelist)
+
+    async def set_guild_blacklist(self, guild, blacklist):
+        """Sets the guild's blacklist"""
+        if not isinstance(guild, discord.Guild) or not isinstance(blacklist, list):
+            raise TypeError("A valid Discord guild and a list of IDs "
+                            "must be passed.")
+        await self.set(guild, "blacklist", blacklist)
+
 
 def parse_cli_flags():
     parser = argparse.ArgumentParser(description="Red - Discord Bot")

core/utils/helpers.py

@@ -152,7 +152,7 @@ class JsonGuildDB(JsonDB):
         await self.save()
         return value
 
-    def get_all(self, guild, default):
+    def get_all(self, guild, default=None):
         """Returns all entries of a guild"""
         if not isinstance(guild, discord.Guild):
             raise TypeError('Can only get guild data')
@@ -182,7 +182,7 @@ class JsonGuildDB(JsonDB):
         """Removes a global value"""
         if GLOBAL_KEY not in self._data:
             self._data[GLOBAL_KEY] = {}
-        del self._data[key]
+        del self._data[GLOBAL_KEY][key]
         await self.save()
 
     async def pop_global(self, key, default=None):