from datetime import datetime
from pathlib import Path
from typing import List, Dict, Any
from zoneinfo import ZoneInfo

from bson import ObjectId
from bson.errors import InvalidId
from discord import (
    ApplicationContext,
    SlashCommandGroup,
    User,
    option,
    File,
    TextChannel,
)
from discord.ext.commands import Cog
from libbot.i18n import _, in_every_locale

from classes import PycordUser, PycordEvent, PycordGuild
from classes.errors import GuildNotFoundError
from classes.pycord_bot import PycordBot
from modules.database import col_users
from modules.utils import is_operation_confirmed


class CogUser(Cog):
    """Cog with user management commands."""

    def __init__(self, bot: PycordBot):
        self.bot: PycordBot = bot

    command_group: SlashCommandGroup = SlashCommandGroup(
        "user",
        description=_("description", "commands", "user"),
        description_localizations=in_every_locale("description", "commands", "user"),
    )

    # TODO Implement the command
    # @command_group.command(
    #     name="create_channel",
    #     description="Create channel for the user",
    # )
    # @option(
    #     "user",
    #     description="Selected user",
    # )
    # async def command_user_create_channel(self, ctx: ApplicationContext, user: User) -> None:
    #     await ctx.respond("Not implemented.")

    # TODO Implement the command
    @command_group.command(
        name="update_channels",
        description="Update user's event channels",
    )
    @option(
        "user",
        description="Selected user",
    )
    async def command_user_update_channels(self, ctx: ApplicationContext, user: User) -> None:
        try:
            guild: PycordGuild = await self.bot.find_guild(ctx.guild.id)
        except (InvalidId, GuildNotFoundError):
            await ctx.respond(self.bot._("unexpected_error", "messages", locale=ctx.locale))
            return

        pycord_user: PycordUser = await self.bot.find_user(user.id, ctx.guild.id)
        events: List[PycordEvent] = []

        pipeline: List[Dict[str, Any]] = [
            {"$match": {"id": pycord_user.id}},
            {
                "$lookup": {
                    "from": "events",
                    "localField": "registered_event_ids",
                    "foreignField": "_id",
                    "as": "registered_events",
                }
            },
            {
                "$match": {
                    "registered_events.ended": None,
                    "registered_events.ends": {"$gt": datetime.now(tz=ZoneInfo("UTC"))},
                    "registered_events.starts": {"$lt": datetime.now(tz=ZoneInfo("UTC"))},
                    "registered_events.is_cancelled": False,
                }
            },
        ]

        async for result in col_users.aggregate(pipeline):
            for registered_event in result["registered_events"]:
                events.append(PycordEvent(**registered_event))

        for event in events:
            if pycord_user.current_event_id is not None and pycord_user.current_event_id != event._id:
                continue

            if pycord_user.current_event_id is None:
                await pycord_user.set_event(event._id, cache=self.bot.cache)

            channel: TextChannel | None = await pycord_user.fix_event_channel(
                self.bot, ctx.guild, guild, event, cache=self.bot.cache
            )

            if channel is None:
                continue

            thumbnail: File | None = (
                None
                if event.thumbnail is None
                else File(Path(f"data/{event.thumbnail['id']}"), event.thumbnail["filename"])
            )

            await channel.send(
                self.bot._("notice_event_already_started", "messages").format(event_name=event.name),
                file=thumbnail,
            )

            stage_id: ObjectId = (
                event.stage_ids[0] if pycord_user.current_stage_id is None else pycord_user.current_stage_id
            )

            await pycord_user.set_event_stage(stage_id, cache=self.bot.cache)

            await self.bot.send_stage_question(channel, event, await self.bot.find_event_stage(stage_id))

        await ctx.respond("Channels were updated.")

    # TODO Implement the command
    # @command_group.command(
    #     name="delete_channel",
    #     description="Delete user's channel",
    # )
    # @option(
    #     "user",
    #     description="Selected user",
    # )
    # @option("confirm", description="Confirmation of the operation", required=False)
    # async def command_user_delete_channel(
    #     self, ctx: ApplicationContext, user: User, confirm: bool = False
    # ) -> None:
    #     await ctx.respond("Not implemented.")

    @command_group.command(
        name="jail",
        description=_("description", "commands", "user_jail"),
        description_localizations=in_every_locale("description", "commands", "user_jail"),
    )
    @option(
        "user",
        description=_("description", "commands", "user_jail", "options", "user"),
        description_localizations=in_every_locale(
            "description", "commands", "user_jail", "options", "user"
        ),
    )
    @option(
        "confirm",
        description=_("description", "commands", "user_jail", "options", "confirm"),
        description_localizations=in_every_locale(
            "description", "commands", "user_jail", "options", "confirm"
        ),
        required=False,
    )
    async def command_user_jail(self, ctx: ApplicationContext, user: User, confirm: bool = False) -> None:
        if not (await is_operation_confirmed(ctx, confirm)):
            return

        pycord_user: PycordUser = await self.bot.find_user(user, ctx.guild)

        if pycord_user.is_jailed:
            await ctx.respond(
                self.bot._("user_jail_already_jailed", "messages", locale=ctx.locale).format(
                    display_name=user.display_name
                ),
                ephemeral=True,
            )
            return

        await pycord_user.jail(self.bot.cache)

        await ctx.respond(
            self.bot._("user_jail_successful", "messages", locale=ctx.locale).format(
                display_name=user.display_name
            )
        )

    @command_group.command(
        name="unjail",
        description=_("description", "commands", "user_unjail"),
        description_localizations=in_every_locale("description", "commands", "user_unjail"),
    )
    @option(
        "user",
        description=_("description", "commands", "user_unjail", "options", "user"),
        description_localizations=in_every_locale(
            "description", "commands", "user_unjail", "options", "user"
        ),
    )
    @option(
        "confirm",
        description=_("description", "commands", "user_unjail", "options", "confirm"),
        description_localizations=in_every_locale(
            "description", "commands", "user_unjail", "options", "confirm"
        ),
        required=False,
    )
    async def command_user_unjail(self, ctx: ApplicationContext, user: User, confirm: bool = False) -> None:
        if not (await is_operation_confirmed(ctx, confirm)):
            return

        pycord_user: PycordUser = await self.bot.find_user(user, ctx.guild)

        if not pycord_user.is_jailed:
            await ctx.respond(
                self.bot._("user_unjail_not_jailed", "messages", locale=ctx.locale).format(
                    display_name=user.display_name
                ),
                ephemeral=True,
            )
            return

        await pycord_user.unjail(self.bot.cache)

        await ctx.respond(
            self.bot._("user_unjail_successful", "messages", locale=ctx.locale).format(
                display_name=user.display_name
            )
        )


def setup(bot: PycordBot) -> None:
    bot.add_cog(CogUser(bot))