Add question_of_the_day

3 files changed, 231 insertions, 0 deletions

diff --git a/question_of_the_day/__init__.py b/question_of_the_day/__init__.py
new file mode 100644
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--- /dev/null
+++ b/question_of_the_day/__init__.py
@@ -0,0 +1,5 @@
+from .question_of_the_day import QuestionOfTheDay
+
+
+async def setup(bot):
+    await bot.add_cog(QuestionOfTheDay(bot))
diff --git a/question_of_the_day/info.json b/question_of_the_day/info.json
new file mode 100644
index 0000000..adfd4d0
--- /dev/null
+++ b/question_of_the_day/info.json
@@ -0,0 +1,5 @@
+{
+    "author": ["Arjun Satarkar"],
+    "description": "Post a random question in a specified channel every day. Users can submit questions for approval.",
+    "short": "Post (customizable) questions every day."
+}
diff --git a/question_of_the_day/question_of_the_day.py b/question_of_the_day/question_of_the_day.py
new file mode 100644
index 0000000..ca3bb5b
--- /dev/null
+++ b/question_of_the_day/question_of_the_day.py
@@ -0,0 +1,221 @@
+from discord.ext import tasks
+from redbot.core import Config
+from redbot.core import checks
+from redbot.core import commands
+import redbot.core
+import copy
+import datetime
+import logging
+import random
+import time
+
+MAX_QUESTIONS_PER_GUILD = 1000
+MAX_QUESTION_SIZE = 500
+
+
+class QuestionOfTheDay(commands.Cog):
+    def __init__(self, bot):
+        self.logger = logging.getLogger("red.aps-cogs.question_of_the_day")
+        self.bot = bot
+        self.config = Config.get_conf(
+            self, identifier="551742410770612234|038a0658-85c9-416d-93ea-7c0bdb426734"
+        )
+        self.config.register_guild(
+            questions=[],
+            post_at={"hour": 0, "minute": 0},
+            post_in_channel=None,
+            enabled=False,
+        )
+        self.config.register_global(last_posted_qotds_at=None, guild_to_post_at={})
+        self.post_qotds.start()
+
+    @tasks.loop(seconds=30)
+    async def post_qotds(self):
+        async def post_qotds_for_time(hour, minute):
+            try:
+                guilds_due = (await self.config.guild_to_post_at())[
+                    repr((hour, minute))
+                ].keys()
+            except KeyError:
+                guilds_due = []
+
+            for guild_id in guilds_due:
+                guild = await self.bot.fetch_guild(int(guild_id))
+                channel_id = await self.config.guild(guild).post_in_channel()
+                if not channel_id:
+                    self.logger.info(
+                        f"QOTD was due for guild {guild.name} ({guild_id}) but no channel was set, so it was not posted."
+                    )
+                async with self.config.guild(guild).questions() as questions:
+                    channel = await guild.fetch_channel(channel_id)
+                    questions_len = len(questions)
+                    if not questions_len:
+                        await channel.send(
+                            "# Question of the Day\n**No questions left!**"
+                        )
+                        continue
+                    question_index = random.randrange(0, questions_len)
+                    question = questions[question_index]
+                    await channel.send(
+                        f"# Question of the Day\n"
+                        f"{question['question']}\n{redbot.core.utils.chat_formatting.italics((await guild.fetch_member(question['asked_by'])).name)}"
+                        f" ({question['asked_by']})"
+                    )
+                    del questions[question_index]
+                    self.logger.info(
+                        f"Posted QOTD for guild {guild.name} ({guild_id})."
+                    )
+
+        current_time = time.time()
+
+        current_datetime = datetime.datetime.fromtimestamp(
+            current_time, datetime.timezone.utc
+        )
+        hour = current_datetime.hour
+        minute = current_datetime.minute
+
+        last_posted_time = await self.config.last_posted_qotds_at()
+        last_posted_datetime = datetime.datetime.fromtimestamp(
+            last_posted_time, datetime.timezone.utc
+        )
+        if not (hour == last_posted_datetime.hour and minute == last_posted_datetime.minute):
+            await post_qotds_for_time(hour, minute)
+
+            gap_secs = current_time - (last_posted_time or current_time)
+            if gap_secs >= 60:
+                # Posts may have been missed; recover them up to an hour
+                self.logger.info(f"Detected gap of {gap_secs} seconds.")
+                gap_minutes = min(int(gap_secs / 60), 60)
+                for _ in range(gap_minutes):
+                    minute -= 1
+                    if minute < 0:
+                        minute = 59
+                        hour -= 1
+                    await post_qotds_for_time(hour, minute)
+
+        await self.config.last_posted_qotds_at.set(current_time)
+
+    async def cog_unload(self):
+        self.post_qotds.cancel()
+
+    @commands.group()
+    async def qotd(self, _ctx):
+        pass
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def add(self, ctx, *, question: str):
+        if not await self.check_and_handle_question_length(ctx, question):
+            return
+        async with self.config.guild(ctx.guild).questions() as questions:
+            if len(questions) > MAX_QUESTIONS_PER_GUILD:
+                await ctx.reply(
+                    f"Error: too many questions already added in this server! Max is {MAX_QUESTIONS_PER_GUILD}."
+                )
+                return
+            questions.append({"question": question, "asked_by": ctx.author.id})
+        await ctx.reply("Question added!")
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def list(self, ctx):
+        pages = [
+            x
+            for x in redbot.core.utils.chat_formatting.pagify(
+                redbot.core.utils.common_filters.filter_various_mentions(
+                    "\n".join(
+                        [
+                            f"{i + 1}. {redbot.core.utils.chat_formatting.bold(question['question'])} by "
+                            f"{redbot.core.utils.chat_formatting.bold(str(await ctx.guild.fetch_member(question['asked_by'])) + ' (' + str(question['asked_by']) + ')')}"
+                            for i, question in enumerate(
+                                await self.config.guild(ctx.guild).questions()
+                            )
+                        ]
+                    )
+                )
+            )
+        ]
+        if pages:
+            await redbot.core.utils.menus.menu(ctx, pages)
+        else:
+            await ctx.reply("No questions yet.")
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def remove(self, ctx, question_id: int):
+        async with self.config.guild(ctx.guild).questions() as questions:
+            try:
+                del questions[question_id - 1]
+            except IndexError:
+                await ctx.reply(f"Error: no question with id {question_id}.")
+                return
+        await ctx.reply(f"Deleted question {question_id}.")
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def post_at(self, ctx, hour_after_midnight_utc: int, minute_after_hour: int):
+        if (
+            hour_after_midnight_utc >= 0
+            and hour_after_midnight_utc < 24
+            and minute_after_hour >= 0
+            and minute_after_hour < 60
+        ):
+            async with self.config.guild(ctx.guild).post_at() as post_at:
+                old_post_at = copy.copy(post_at)
+                post_at["hour"] = hour_after_midnight_utc
+                post_at["minute"] = minute_after_hour
+                async with self.config.guild_to_post_at() as guild_to_post_at:
+                    try:
+                        del guild_to_post_at[
+                            repr((old_post_at["hour"], old_post_at["minute"]))
+                        ][repr(ctx.guild.id)]
+                    except KeyError:
+                        pass
+                    try:
+                        guild_to_post_at[(hour_after_midnight_utc, minute_after_hour)][
+                            ctx.guild.id
+                        ] = 1
+                    except KeyError:
+                        guild_to_post_at[
+                            (hour_after_midnight_utc, minute_after_hour)
+                        ] = {ctx.guild.id: 1}
+            await ctx.reply(
+                f"The bot will post the question of the day {hour_after_midnight_utc:0>2}:{minute_after_hour:0>2} hours after midnight UTC."
+            )
+        else:
+            await ctx.reply(
+                "Error: the conditions 0 ≤ hours < 24 and 0 ≤ minutes < 60 must be observed."
+            )
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def post_here(self, ctx):
+        await self.config.guild(ctx.guild).post_in_channel.set(ctx.channel.id)
+        await ctx.reply("Questions of the day will be posted in this channel.")
+
+    async def check_and_handle_question_length(self, ctx, question: str):
+        if len(question.encode("utf-8")) > MAX_QUESTION_SIZE:
+            await ctx.reply(
+                f"Error: that question is too long! Maximum length is {MAX_QUESTION_SIZE} bytes."
+            )
+            return False
+        return True
+
+    @qotd.command()
+    @checks.admin_or_permissions(manage_server=True)
+    async def toggle(self, ctx):
+        should_be_enabled = not await self.config.guild(ctx.guild).enabled()
+        await self.config.guild(ctx.guild).enabled.set(should_be_enabled)
+        post_at = await self.config.guild(ctx.guild).post_at()
+        async with self.config.guild_to_post_at() as guild_to_post_at:
+            try:
+                guild_to_post_at[(post_at["hour"], post_at["minute"])][ctx.guild.id] = 1
+            except KeyError:
+                guild_to_post_at[(post_at["hour"], post_at["minute"])] = {
+                    ctx.guild.id: 1
+                }
+        await ctx.reply(
+            "QOTDs will be posted in this server (provided that the channel has been set with post_here)."
+            if should_be_enabled
+            else "QOTDs will no longer be posted."
+        )