"""
Contained commands and views for record commands.
"""

import nextcord
from discord import TextInputStyle
from nextcord.ext import commands

from config import DakinyConfig
from utils import record_event_points


class RecordCog(commands.Cog, name="Record Commands"):
    """
    Class holds record commands.
    """

    def __init__(self, bot) -> None:
        """
        Default constructor for RecordCog class. Does nothing.
        """
        super().__init__()
        self.bot: commands.Bot = bot

    @nextcord.slash_command()
    async def record(self, interaction: nextcord.Interaction):
        """
        Parent slash command for record. Never called.
        """

    @record.subcommand(description="Record an event and its participants.")
    async def event(
        self,
        interaction: nextcord.Interaction,
        name: str = nextcord.SlashOption(
            required=True, description="Name of the event that was hosted."
        ),
        host: nextcord.Member = nextcord.SlashOption(
            required=False,
            description="An alternative host if you are recording event for someone else.",
        ),
    ):
        """
        This command creates the base event recording embed and sends a message with it and the EventView
        for gathering more information on the event.

        Args:
            interaction (nextcord.Interaction): interaction with this command.
            name (str): Name of the event.
            host (nextcord.Member, optional): Alternative host to user using command.
        """

        # check role
        if (
            interaction.guild.get_role(self.bot.config.params.event_host_role_id)
            not in interaction.user.roles
        ):
            await interaction.response.send_message(
                f"You must have the <@&{self.bot.config.params.event_host_role_id}> role to record an event.",
                ephemeral=True,
            )
            return

        if host is None:
            host = interaction.user

        embed: nextcord.Embed = nextcord.Embed(title=name, description="")
        embed.add_field(name="Participants", value="")
        embed.add_field(name="Non-Discord Participants", value="")
        embed.add_field(name="Hosted by", value=f"<@{host.id}>", inline=False)

        await interaction.response.send_message(
            "Fill out event details and select all members who participated!",
            view=EventView(name, self.bot.config, host.id),
            ephemeral=True,
            embed=embed,
        )


class EventView(nextcord.ui.View):
    """
    Class handles gathering information on an event. Has buttons to edit the information, cancel, and submit.
    Also contains a UserSelect object to pick discord members.
    """

    def __init__(self, name: str, config: DakinyConfig, host_id: int):
        super().__init__()

        self.name: str = name
        self.config: DakinyConfig = config
        self.host_id: int = host_id

        self.event_participants = ParticipantSelect()

        self.add_item(self.event_participants)

    @nextcord.ui.button(label="Cancel", style=nextcord.ButtonStyle.red, row=1)
    async def cancel(
        self, button: nextcord.ui.Button, interaction: nextcord.Interaction
    ):
        """
        Cancels event submission. Removes embed and view.
        """
        await interaction.response.edit_message(
            "Canceled", ephemeral=True, embed=None, view=None
        )
        self.stop()

    @nextcord.ui.button(label="Edit", style=nextcord.ButtonStyle.blurple, row=1)
    async def edit(self, button: nextcord.ui.Button, interaction: nextcord.Interaction):
        """
        Calls modal to update the text input information of the event.
        """
        await interaction.response.send_modal(
            ParticipantModal(interaction.message.embeds[0])
        )

    @nextcord.ui.button(label="Confirm", style=nextcord.ButtonStyle.green, row=1)
    async def confirm(
        self, button: nextcord.ui.Button, interaction: nextcord.Interaction
    ):
        """
        Submits the event embed to the event channel. Removes view and embed from recording message.
        Sends point information to database.
        """

        discord_users = self.event_participants.values.members
        if discord_users:
            discord_users_list: list[str] = [
                str(user.id) for user in discord_users if user.id is not self.host_id
            ]
            record_event_points(
                self.config,
                discord_users_list,
                True,
                self.config.params.event_participate_points,
            )

        non_discord_users = interaction.message.embeds[0].fields[1].value
        if non_discord_users:
            non_discord_users_list: list[str] = non_discord_users.split("\n")
            record_event_points(
                self.config,
                non_discord_users_list,
                False,
                self.config.params.event_participate_points,
            )

        record_event_points(
            self.config, [self.host_id], True, self.config.params.event_host_points
        )

        event_channel: nextcord.TextChannel = interaction.guild.get_channel(
            self.config.params.event_post_channel_id
        )
        await event_channel.send(embed=interaction.message.embeds[0])
        await interaction.response.edit_message(
            content="Event has been submitted.", view=None, embed=None
        )

        self.stop()


class ParticipantModal(nextcord.ui.Modal):
    """
    This modal contains all the text edits for an event. You can change the name, description, and add the usernames
    of participants who are not in the discord.
    """

    # TODO turn this embed into a dict
    def __init__(self, embed):
        super().__init__(
            "Edit the event.",
            timeout=5 * 60,
        )
        self.embed: nextcord.Embed = embed
        self.name: nextcord.ui.TextInput = nextcord.ui.TextInput(
            required=True,
            label="Event Name",
            default_value=self.embed.title,
        )
        self.description: nextcord.ui.TextInput = nextcord.ui.TextInput(
            required=False,
            label="Event Description",
            default_value=self.embed.description,
            style=TextInputStyle.paragraph,
            placeholder="Add a description if desired.",
            max_length=1000,
        )
        self.participants: nextcord.ui.TextInput = nextcord.ui.TextInput(
            required=False,
            label="Non-Discord Usernames",
            style=TextInputStyle.paragraph,
            placeholder="Please separate usernames with a new line.",
            default_value=self.embed.fields[1].value,
        )
        self.add_item(self.name)
        self.add_item(self.description)
        self.add_item(self.participants)

    async def callback(self, interaction: nextcord.Interaction):
        self.embed.title = self.name.value
        self.embed.description = self.description.value
        self.embed.set_field_at(
            index=1, name="Non-Discord Participants", value=self.participants.value
        )

        await interaction.response.edit_message(embed=self.embed)


class ParticipantSelect(nextcord.ui.UserSelect):
    """
    A selection drop down for discord members. Updates the embed with all users selected.
    """

    def __init__(self) -> None:
        super().__init__(
            min_values=1,
            max_values=25,
            placeholder="Select all participants",
            row=0,
        )

    async def callback(self, interaction: nextcord.Interaction):
        embed: nextcord.Embed = interaction.message.embeds[0]
        participants: str = "\n".join(
            [f"<@{participant.id}>" for participant in self.values.members]
        )
        embed.set_field_at(0, name="Participants", value=participants)
        await interaction.response.edit_message(embed=embed)