"""JARVIS Reddit cog."""
import asyncio
import logging

from asyncpraw import Reddit
from asyncprawcore.exceptions import Forbidden, NotFound, Redirect
from dis_snek import InteractionContext, Permissions, Scale, Snake
from dis_snek.client.utils.misc_utils import get
from dis_snek.models.discord.channel import ChannelTypes, GuildText
from dis_snek.models.discord.components import ActionRow, Select, SelectOption
from dis_snek.models.snek.application_commands import (
    OptionTypes,
    SlashCommand,
    slash_option,
)
from dis_snek.models.snek.command import check
from jarvis_core.db import q
from jarvis_core.db.models import Subreddit, SubredditFollow

from jarvis import const
from jarvis.config import JarvisConfig
from jarvis.utils.permissions import admin_or_permissions

DEFAULT_USER_AGENT = f"python:JARVIS:{const.__version__} (by u/zevaryx)"


class RedditCog(Scale):
    """JARVIS Reddit Cog."""

    def __init__(self, bot: Snake):
        self.bot = bot
        self.logger = logging.getLogger(__name__)
        config = JarvisConfig.from_yaml()
        config.reddit["user_agent"] = config.reddit.get("user_agent", DEFAULT_USER_AGENT)
        self.api = Reddit(**config.reddit)

    reddit = SlashCommand(name="reddit", description="Manage Reddit follows")

    @reddit.subcommand(sub_cmd_name="follow", sub_cmd_description="Follow a Subreddit")
    @slash_option(
        name="name",
        description="Subreddit display name",
        opt_type=OptionTypes.STRING,
        required=True,
    )
    @slash_option(
        name="channel",
        description="Channel to post to",
        opt_type=OptionTypes.CHANNEL,
        channel_types=[ChannelTypes.GUILD_TEXT],
        required=True,
    )
    @check(admin_or_permissions(Permissions.MANAGE_GUILD))
    async def _reddit_follow(self, ctx: InteractionContext, name: str, channel: GuildText) -> None:
        name = name.replace("r/", "")
        if len(name) > 20 or len(name) < 3:
            await ctx.send("Invalid Subreddit name", ephemeral=True)
            return

        if not isinstance(channel, GuildText):
            await ctx.send("Channel must be a text channel", ephemeral=True)
            return

        try:
            subreddit = await self.api.subreddit(name)
            await subreddit.load()
        except (NotFound, Forbidden, Redirect) as e:
            self.logger.debug(f"Subreddit {name} raised {e.__class__.__name__} on add")
            await ctx.send("Subreddit may be private, quarantined, or nonexistent.", ephemeral=True)
            return

        exists = await SubredditFollow.find_one(
            q(display_name=subreddit.display_name, guild=ctx.guild.id)
        )
        if exists:
            await ctx.send("Subreddit already being followed in this guild", ephemeral=True)
            return

        count = len([i async for i in SubredditFollow.find(q(guild=ctx.guild.id))])
        if count >= 12:
            await ctx.send("Cannot follow more than 12 Subreddits", ephemeral=True)
            return

        if subreddit.over18 and not channel.nsfw:
            await ctx.send(
                "Subreddit is nsfw, but channel is not. Mark the channel NSFW first.",
                ephemeral=True,
            )
            return

        sr = await Subreddit.find_one(q(display_name=subreddit.display_name))
        if not sr:
            sr = Subreddit(display_name=subreddit.display_name, over18=subreddit.over18)
            await sr.commit()

        srf = SubredditFollow(
            display_name=subreddit.display_name,
            channel=channel.id,
            guild=ctx.guild.id,
            admin=ctx.author.id,
        )
        await srf.commit()

        await ctx.send(f"Now following `r/{name}` in {channel.mention}")

    @reddit.subcommand(sub_cmd_name="unfollow", sub_cmd_description="Unfollow Subreddits")
    @check(admin_or_permissions(Permissions.MANAGE_GUILD))
    async def _subreddit_unfollow(self, ctx: InteractionContext) -> None:
        subs = SubredditFollow.find(q(guild=ctx.guild.id))
        subreddits = []
        async for sub in subs:
            subreddits.append(sub)
        if not subreddits:
            await ctx.send("You need to follow a Subreddit first", ephemeral=True)
            return

        options = []
        names = []
        for idx, subreddit in enumerate(subreddits):
            sub = await Subreddit.find_one(q(display_name=subreddit.display_name))
            names.append(sub.display_name)
            option = SelectOption(label=sub.display_name, value=str(idx))
            options.append(option)

        select = Select(
            options=options, custom_id="to_delete", min_values=1, max_values=len(subreddits)
        )

        components = [ActionRow(select)]
        block = "\n".join(x for x in names)
        message = await ctx.send(
            content=f"You are following the following subreddits:\n```\n{block}\n```\n\n"
            "Please choose subreddits to unfollow",
            components=components,
        )

        try:
            context = await self.bot.wait_for_component(
                check=lambda x: ctx.author.id == x.context.author.id,
                messages=message,
                timeout=60 * 5,
            )
            for to_delete in context.context.values:
                follow = get(subreddits, guild=ctx.guild.id, display_name=names[int(to_delete)])
                try:
                    await follow.delete()
                except Exception:
                    self.logger.debug("Ignoring deletion error")
            for row in components:
                for component in row.components:
                    component.disabled = True

            block = "\n".join(names[int(x)] for x in context.context.values)
            await context.context.edit_origin(
                content=f"Unfollowed the following:\n```\n{block}\n```", components=components
            )
        except asyncio.TimeoutError:
            for row in components:
                for component in row.components:
                    component.disabled = True
            await message.edit(components=components)


def setup(bot: Snake) -> None:
    """Add RedditCog to JARVIS"""
    if JarvisConfig.from_yaml().reddit:
        RedditCog(bot)