"""Contains functions for open raid sign-ups."""

import datetime

import nextcord

from off_cooldown_bot.logger import ocd_logger

MAX_TANKS = 2
MAX_HEALERS = 2
MAX_DPS = 25


class OpenRaid(nextcord.ui.View):
    """Class defines view for buttons on an open raid schedule message."""

    def __init__(self) -> None:
        super().__init__(timeout=None, auto_defer=True)

    @nextcord.ui.button(label="Tank", style=nextcord.ButtonStyle.blurple, emoji="🛡️", custom_id="open_raid_tank")
    async def tank(self, button: nextcord.ui.Button, interaction: nextcord.Interaction) -> None:  # noqa: ARG002
        """
        Signs a user up as a tank.

        Removes them if they are already signed up.

        Args:
            button (nextcord.ui.Button): Un-used.
            interaction (nextcord.Interaction): Interaction with command.

        """
        if interaction.message is None or interaction.user is None:
            ocd_logger.warning("Command was called without a message or user.")
            return

        embed = interaction.message.embeds[0]
        user_str = f"<@{interaction.user.id}>"

        for index, field in enumerate(embed.fields):
            if field.name == "Tanks":
                values = [] if field.value is None else field.value.split("\n")
                if user_str in values:
                    values.remove(user_str)
                else:
                    if len(values) >= MAX_TANKS:
                        await interaction.response.send_message(
                            "Enough tanks have signed up, please choose another role.", ephemeral=True
                        )
                        return
                    values.append(user_str)
                embed.set_field_at(index, name=field.name, value="\n".join(values), inline=False)
                break

        await interaction.edit(embed=embed)

    @nextcord.ui.button(label="Healer", style=nextcord.ButtonStyle.green, emoji="❤️", custom_id="open_raid_healer")
    async def healer(self, button: nextcord.ui.Button, interaction: nextcord.Interaction) -> None:  # noqa: ARG002
        """
        Signs a user up as a healer.

        Removes them if they are already signed up.

        Args:
            button (nextcord.ui.Button): Un-used.
            interaction (nextcord.Interaction): Interaction with command.

        """
        if interaction.message is None or interaction.user is None:
            ocd_logger.warning("Command was called without a message or user.")
            return

        embed = interaction.message.embeds[0]
        user_str = f"<@{interaction.user.id}>"

        for index, field in enumerate(embed.fields):
            if field.name == "Healers":
                values = [] if field.value is None else field.value.split("\n")
                if user_str in values:
                    values.remove(user_str)
                else:
                    if len(values) >= MAX_HEALERS:
                        await interaction.response.send_message(
                            "Enough healers have signed up, please choose another role.", ephemeral=True
                        )
                        return
                    values.append(user_str)
                embed.set_field_at(index, name=field.name, value="\n".join(values), inline=False)
                break

        await interaction.edit(embed=embed)

    @nextcord.ui.button(label="DPS", style=nextcord.ButtonStyle.red, emoji="⚔️", custom_id="open_raid_dps")
    async def dps(self, button: nextcord.ui.Button, interaction: nextcord.Interaction) -> None:  # noqa: ARG002
        """
        Signs a user up as dps.

        Removes them if they are already signed up.

        Args:
            button (nextcord.ui.Button): Un-used.
            interaction (nextcord.Interaction): Interaction with command.

        """
        if interaction.message is None or interaction.user is None:
            ocd_logger.warning("Command was called without a message or user.")
            return

        embed = interaction.message.embeds[0]
        user_str = f"<@{interaction.user.id}>"

        for index, field in enumerate(embed.fields):
            if field.name == "DPS":
                values = [] if field.value is None else field.value.split("\n")
                if user_str in values:
                    values.remove(user_str)
                else:
                    if len(values) >= MAX_DPS:
                        await interaction.response.send_message(
                            "Enough dps have signed up, please choose another role.", ephemeral=True
                        )
                        return
                    values.append(user_str)
                embed.set_field_at(index, name=field.name, value="\n".join(values), inline=False)
                break

        await interaction.edit(embed=embed)


def build_raid_embed() -> nextcord.Embed:
    """
    Build the open raid embed.

    Returns:
        nextcord.Embed: _description_

    """
    raid_time = datetime.datetime.now(tz=datetime.UTC)  # TODO make this to the next saturday at 8pm CST
    embed = nextcord.Embed(title="Off Cooldown Open Raid", timestamp=raid_time)
    embed.add_field(name="Tanks", value="", inline=False)
    embed.add_field(name="Healers", value="", inline=False)
    embed.add_field(name="DPS", value="", inline=False)

    return embed