Refactor more db methods into the models

src/pluralkit/bot/embeds.py

@@ -69,9 +69,10 @@ async def system_card(conn, client: discord.Client, system: System) -> discord.E
         card.add_field(name="Current fronter" if len(fronters) == 1 else "Current fronters", value=fronter_val)
 
     account_names = []
-    for account_id in await db.get_linked_accounts(conn, system_id=system.id):
-        account = await client.get_user_info(account_id)
+    for account_id in await system.get_linked_account_ids(conn):
+        account = await client.get_user_info(str(account_id))
         account_names.append("{}#{}".format(account.name, account.discriminator))
+
     card.add_field(name="Linked accounts", value="\n".join(account_names))
 
     if system.description:
@@ -80,7 +81,7 @@ async def system_card(conn, client: discord.Client, system: System) -> discord.E
 
     # Get names of all members
     member_texts = []
-    for member in await db.get_all_members(conn, system_id=system.id):
+    for member in await system.get_members(conn):
         member_texts.append("{} (`{}`)".format(escape(member.name), member.hid))
 
     if len(member_texts) > 0:
@@ -92,7 +93,7 @@ async def system_card(conn, client: discord.Client, system: System) -> discord.E
 
 
 async def member_card(conn, member: Member) -> discord.Embed:
-    system = await db.get_system(conn, system_id=member.system)
+    system = await member.fetch_system(conn)
 
     card = discord.Embed()
     card.colour = discord.Colour.blue()
@@ -105,9 +106,6 @@ async def member_card(conn, member: Member) -> discord.Embed:
     if member.avatar_url:
         card.set_thumbnail(url=member.avatar_url)
 
-    # Get system name and hid
-    system = await db.get_system(conn, system_id=member.system)
-
     if member.color:
         card.colour = int(member.color, 16)
 
@@ -120,7 +118,7 @@ async def member_card(conn, member: Member) -> discord.Embed:
     if member.pronouns:
         card.add_field(name="Pronouns", value=member.pronouns)
 
-    message_count = await db.get_member_message_count(conn, member.id)
+    message_count = await member.message_count(conn)
     if message_count > 0:
         card.add_field(name="Message Count", value=str(message_count), inline=True)
 

src/pluralkit/member.py

@@ -124,4 +124,11 @@ class Member(namedtuple("Member",
 
     async def delete(self, conn):
         """Delete this member from the database."""
-        await db.delete_member(conn, self.id)
+        await db.delete_member(conn, self.id)
+
+    async def fetch_system(self, conn) -> "System":
+        """Fetch the member's system from the database"""
+        return await db.get_system(conn, self.system)
+
+    async def message_count(self, conn) -> int:
+        return await db.get_member_message_count(conn, self.id)

src/pluralkit/system.py

@@ -1,7 +1,7 @@
 from datetime import datetime
 
 from collections.__init__ import namedtuple
-from typing import Optional
+from typing import Optional, List
 
 from pluralkit import db, errors
 from pluralkit.member import Member
@@ -85,6 +85,9 @@ class System(namedtuple("System", ["id", "hid", "name", "description", "tag", "a
 
             await db.unlink_account(conn, self.id, account_id)
 
+    async def get_linked_account_ids(self, conn) -> List[int]:
+        return await db.get_linked_accounts(conn, self.id)
+
     async def delete(self, conn):
         await db.remove_system(conn, self.id)
 
@@ -98,6 +101,9 @@ class System(namedtuple("System", ["id", "hid", "name", "description", "tag", "a
         member = await db.create_member(conn, self.id, member_name, new_hid)
         return member
 
+    async def get_members(self, conn) -> List[Member]:
+        return await db.get_all_members(conn, self.id)
+
     def get_member_name_limit(self) -> int:
         """Returns the maximum length a member's name or nickname is allowed to be. Depends on the system tag."""
         if self.tag: