import discord
from discord.ext import commands

import lib.format
from lib.client import Luminara
from lib.const import CONST
from ui.embeds import Builder
from ui.views.introduction import (
    IntroductionFinishButtons,
    IntroductionStartButtons,
)


class Introduction(commands.Cog):
    def __init__(self, bot: Luminara):
        self.bot = bot
        self.introduction.usage = lib.format.generate_usage(self.introduction)

    @commands.hybrid_command(name="introduction", aliases=["intro"])
    async def introduction(self, ctx: commands.Context[Luminara]) -> None:
        """
        Introduction command.

        Parameters
        ----------
        ctx : commands.Context[Luminara]
            The context of the command.
        """
        guild: discord.Guild | None = self.bot.get_guild(
            CONST.INTRODUCTIONS_GUILD_ID,
        )
        member: discord.Member | None = guild.get_member(ctx.author.id) if guild else None

        if not guild or not member:
            await ctx.send(
                embed=Builder.create_embed(
                    Builder.ERROR,
                    user_name=ctx.author.name,
                    author_text=CONST.STRINGS["intro_no_guild_author"],
                    description=CONST.STRINGS["intro_no_guild"],
                    footer_text=CONST.STRINGS["intro_service_name"],
                ),
            )
            return

        question_mapping: dict[str, str] = CONST.INTRODUCTIONS_QUESTION_MAPPING
        channel: discord.abc.GuildChannel | None = guild.get_channel(
            CONST.INTRODUCTIONS_CHANNEL_ID,
        )

        if not channel or isinstance(
            channel,
            discord.ForumChannel | discord.CategoryChannel,
        ):
            await ctx.send(
                embed=Builder.create_embed(
                    Builder.ERROR,
                    user_name=ctx.author.name,
                    author_text=CONST.STRINGS["intro_no_channel_author"],
                    description=CONST.STRINGS["intro_no_channel"],
                    footer_text=CONST.STRINGS["intro_service_name"],
                ),
            )
            return

        view: IntroductionStartButtons | IntroductionFinishButtons = IntroductionStartButtons(ctx)
        await ctx.send(
            embed=Builder.create_embed(
                Builder.INFO,
                user_name=ctx.author.name,
                author_text=CONST.STRINGS["intro_service_name"],
                description=CONST.STRINGS["intro_start"].format(channel.mention),
                footer_text=CONST.STRINGS["intro_start_footer"],
            ),
            view=view,
        )

        await view.wait()

        if view.clicked_stop:
            await ctx.send(
                embed=Builder.create_embed(
                    Builder.ERROR,
                    user_name=ctx.author.name,
                    author_text=CONST.STRINGS["intro_stopped_author"],
                    description=CONST.STRINGS["intro_stopped"],
                    footer_text=CONST.STRINGS["intro_service_name"],
                ),
            )
            return

        if view.clicked_start:

            def check(message: discord.Message) -> bool:
                return message.author == ctx.author and isinstance(
                    message.channel,
                    discord.DMChannel,
                )

            answer_mapping: dict[str, str] = {}

            for key, question in question_mapping.items():
                await ctx.send(
                    embed=Builder.create_embed(
                        Builder.INFO,
                        user_name=ctx.author.name,
                        author_text=key,
                        description=question,
                        footer_text=CONST.STRINGS["intro_question_footer"],
                    ),
                )

                try:
                    answer: discord.Message = await self.bot.wait_for(
                        "message",
                        check=check,
                        timeout=300,
                    )
                    answer_content: str = answer.content.replace("\n", " ")

                    if len(answer_content) > 200:
                        await ctx.send(
                            embed=Builder.create_embed(
                                Builder.ERROR,
                                user_name=ctx.author.name,
                                author_text=CONST.STRINGS["intro_too_long_author"],
                                description=CONST.STRINGS["intro_too_long"],
                                footer_text=CONST.STRINGS["intro_service_name"],
                            ),
                        )
                        return

                    answer_mapping[key] = answer_content

                except TimeoutError:
                    await ctx.send(
                        embed=Builder.create_embed(
                            Builder.ERROR,
                            user_name=ctx.author.name,
                            author_text=CONST.STRINGS["intro_timeout_author"],
                            description=CONST.STRINGS["intro_timeout"],
                            footer_text=CONST.STRINGS["intro_service_name"],
                        ),
                    )
                    return

            description: str = "".join(
                CONST.STRINGS["intro_preview_field"].format(key, value) for key, value in answer_mapping.items()
            )

            preview: discord.Embed = Builder.create_embed(
                Builder.INFO,
                user_name=ctx.author.name,
                author_text=ctx.author.name,
                author_icon_url=ctx.author.display_avatar.url,
                description=description,
                footer_text=CONST.STRINGS["intro_content_footer"],
                hide_name_in_description=True,
            )
            view = IntroductionFinishButtons(ctx)

            await ctx.send(embed=preview, view=view)
            await view.wait()

            if view.clicked_confirm:
                await channel.send(
                    embed=preview,
                    content=CONST.STRINGS["intro_content"].format(ctx.author.mention),
                )
                await ctx.send(
                    embed=Builder.create_embed(
                        Builder.INFO,
                        user_name=ctx.author.name,
                        author_text=CONST.STRINGS["intro_post_confirmation_author"],
                        description=CONST.STRINGS["intro_post_confirmation"].format(
                            channel.mention,
                        ),
                    ),
                )
            else:
                await ctx.send(
                    embed=Builder.create_embed(
                        Builder.ERROR,
                        user_name=ctx.author.name,
                        author_text=CONST.STRINGS["intro_stopped_author"],
                        description=CONST.STRINGS["intro_stopped"],
                        footer_text=CONST.STRINGS["intro_service_name"],
                    ),
                )


async def setup(bot: Luminara) -> None:
    await bot.add_cog(Introduction(bot))