from __future__ import annotations

import contextlib
import logging

import discord
from discord import app_commands
from discord.ext import commands

from features import shared

logger = logging.getLogger("vision")

_open_tickets: dict[int, int] = {}


class ModMail(commands.Cog):
    def __init__(self, bot: commands.Bot):
        self.bot = bot

    @commands.Cog.listener()
    async def on_message(self, message: discord.Message):
        if message.author.bot or message.guild:
            return

        cfg = shared.get(0, "modmail")
        if not cfg.get("enabled"):
            return

        guild_id = cfg.get("guild_id")
        if not guild_id:
            return

        guild = self.bot.get_guild(guild_id)
        if not guild:
            return

        existing = _open_tickets.get(message.author.id)
        if existing:
            channel = guild.get_channel(existing)
            if channel:
                embed = discord.Embed(
                    description=message.content or "*Pièce jointe*",
                    color=discord.Color.blurple(),
                    timestamp=message.created_at,
                )
                embed.set_author(name=str(message.author), icon_url=message.author.display_avatar.url)
                await channel.send(embed=embed)
                for att in message.attachments:
                    await channel.send(file=await discord.File(await att.to_file(), filename=att.filename))
                return

        category_id = cfg.get("category_id")
        staff_role_id = cfg.get("staff_role_id")
        category = guild.get_channel(category_id) if category_id else None

        overwrites = {
            guild.default_role: discord.PermissionOverwrite(view_channel=False),
            guild.me: discord.PermissionOverwrite(
                view_channel=True,
                send_messages=True,
                read_message_history=True,
                attach_files=True,
                manage_channels=True,
            ),
            message.author: discord.PermissionOverwrite(
                view_channel=True, send_messages=True, read_message_history=True
            ),
        }
        if staff_role_id:
            role = guild.get_role(staff_role_id)
            if role:
                overwrites[role] = discord.PermissionOverwrite(
                    view_channel=True, send_messages=True, read_message_history=True, attach_files=True
                )

        channel = await guild.create_text_channel(
            f"modmail-{message.author.name}",
            category=category,
            overwrites=overwrites,
            topic=f"Modmail de {message.author} ({message.author.id})",
        )

        _open_tickets[message.author.id] = channel.id

        container = discord.ui.Container()
        container.add_item(
            discord.ui.TextDisplay(
                f"## Modmail\n**De :** {message.author.mention}\n**Raison :** {message.content[:500] if message.content else 'Pièce jointe'}"
            )
        )
        view = discord.ui.LayoutView()
        view.add_item(container)

        mention = message.author.mention
        if staff_role_id:
            mention += f" <@&{staff_role_id}>"
        await channel.send(content=mention, view=view)

        with contextlib.suppress(discord.HTTPException):
            await message.author.send("Ton message a été envoyé au staff, réponses ici.")

    @app_commands.command(name="modmail_setup", description="Configurer le système de modmail")
    @app_commands.describe(category="Category pour les tickets", staff_role="Rôle staff")
    @app_commands.checks.has_permissions(manage_guild=True)
    async def modmail_setup(
        self, interaction: discord.Interaction, category: discord.CategoryChannel, staff_role: discord.Role
    ):
        shared.set(
            0,
            "modmail",
            {
                "enabled": True,
                "guild_id": interaction.guild_id,
                "category_id": category.id,
                "staff_role_id": staff_role.id,
            },
        )
        await interaction.response.send_message(
            f"Modmail configuré : catégorie {category.mention}, staff {staff_role.mention}", ephemeral=True
        )


async def setup(bot: commands.Bot):
    await bot.add_cog(ModMail(bot))