From 329ef7561eb70e9aa57474e4bf8d1c3bfb3b88b4 Mon Sep 17 00:00:00 2001
From: NatrixAeria <upezu@student.kit.edu>
Date: Sun, 18 Oct 2020 21:39:42 +0200
Subject: Add a tutor list

---
 .gitignore  |  1 +
 bot.py      | 20 ++++++++++++++++++++
 commands.py | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 config.py   |  1 +
 4 files changed, 68 insertions(+)

diff --git a/.gitignore b/.gitignore
index 16328e0..114517e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .env
 .idea/
 __pycache__
+tutors
diff --git a/bot.py b/bot.py
index ad2f95b..61c7aeb 100644
--- a/bot.py
+++ b/bot.py
@@ -19,6 +19,18 @@ class Cupido(commands.Bot):
         self.task = None
         self.reaction_map = {}
         self.vote_map = {}
+        self.read_file()
+
+    def read_file(self):
+        try:
+            with open(config.TUTOR_FILE_PATH, 'r') as f:
+                self.tutors = {int(line) for line in f.read().split('\n')}
+        except FileNotFoundError:
+            self.tutors = set()
+
+    def write_file(self):
+        with open(config.TUTOR_FILE_PATH, 'w') as f:
+            f.write('\n'.join(str(t) for t in self.tutors))
 
     async def await_coroutine(self, co):
         if self.task is not None:
@@ -160,6 +172,14 @@ class Cupido(commands.Bot):
                 selected=vote)[0]
         return await message.edit(embed=embeds[0])
 
+    def add_tutor(self, tutor):
+        self.tutors.add(tutor)
+        self.write_file()
+
+    def remove_tutor(self, tutor):
+        self.tutors.remove(tutor)
+        self.write_file()
+
 
 def main():
     token = getenv(config.TOKEN_ENV_VAR)
diff --git a/commands.py b/commands.py
index 8e673c2..0a10b7f 100644
--- a/commands.py
+++ b/commands.py
@@ -136,5 +136,51 @@ async def loop(ctx: commands.Context, n=config.DEFAULT_LOOP_COUNT, t=config.DEFA
         if not result:
             break
 
+@commands.command(
+    help='add a tutor',
+    aliases=('tutor', 'hello')
+)
+async def add(ctx: commands.Context, id=None):
+    if id is None:
+        return await answer(ctx, 'error: expecting user id')
+    try:
+        id = int(id)
+    except ValueError:
+        return await answer(ctx, 'error: invalid user id')
+    ctx.bot.add_tutor(id)
+    await answer(ctx, f'added user id {id} to the tutor list')
+
+@commands.command(
+    help='remove a tutor',
+    aliases=('rm', 'del', 'delete', 'byebye', 'bb')
+)
+async def remove(ctx: commands.Context, id=None):
+    if id is None:
+        return await answer(ctx, 'error: expecting user id')
+    try:
+        id = int(id)
+    except ValueError:
+        return await answer(ctx, 'error: invalid user id')
+    ctx.bot.remove_tutor(id)
+    await answer(ctx, f'romved user id {id} from the tutor list')
+
+
+@commands.command(
+    help='list all tutors',
+    aliases=('tutors',)
+)
+async def list(ctx: commands.Context):
+    if ctx.bot.tutors:
+        futures = []
+        for tutor in ctx.bot.tutors:
+            try:
+                user = ctx.bot.get_user(tutor) or await ctx.bot.fetch_user(tutor)
+                futures.append(answer(ctx, f' • {user} ({tutor})'))
+            except Exception as e:
+                futures.append(await answer(ctx, f' • *unknown* ({tutor})'))
+        await await_n(futures)
+    else:
+        await answer(ctx, 'there is no tutor :/')
+
 
 bot_commands = [cmd for cmd in locals().values() if isinstance(cmd, commands.Command)]
diff --git a/config.py b/config.py
index d7ea555..240e602 100644
--- a/config.py
+++ b/config.py
@@ -1,5 +1,6 @@
 NAME = 'cupido'
 TOKEN_ENV_VAR = 'DISCORD_TOKEN'
+TUTOR_FILE_PATH = 'tutors'
 
 COMMAND_PREFIX = '!<3 '
 
-- 
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