"""
Commands for managing the tables/categories/scores for a Guild.
"""

from typing import Optional

import nextcord
from nextcord.ext import commands

from highscores import highscores_data  # pylint: disable=import-error
from utilities.utils import (  # pylint: disable=import-error
    autofill_categories,
    autofill_tables,
    autofill_users,
    send_highscore_message,
)

from .views.update_username_verify import UpdateUsernameVerifyView


class DataManagementCog(commands.Cog, name="Table Management"):
    """
    Class holds commands for managing the data storage of the highscores.
    """

    def __init__(self, bot: commands.Bot):
        """
        Default constructor for DataManagement class. Sets internal bot variable.
        """
        self._bot: commands.Bot = bot

    @commands.Cog.listener()
    async def on_ready(self):
        """
        Called when cog is loaded. Adds views required for DataManagement commands.
        """
        self._bot.add_view(UpdateUsernameVerifyView())

    @nextcord.slash_command(default_member_permissions=nextcord.Permissions(administrator=True))
    async def delete(self, interaction: nextcord.Interaction):
        """
        Parent slash command for deleting things. Never called.
        """

    @delete.subcommand(description="Deletes all scores for this guild. Used for testing. Do Not Use.")
    async def scores(self, interaction: nextcord.Interaction):
        """
        Warning: This command only works for developers.

        A command which deletes all scores in all tables for this guild.
        Command limits to admins to prevent devs from usings on non-test servers.
        """
        # only allow AlwaysCompiling to use.
        # If you are a developer and want to use command, can add name to list
        if interaction.user.id == 206602713511886849:
            for table in highscores_data.get_guild(interaction.guild_id).tables:
                for category in table.categories:
                    category.clear()
            highscores_data.save_guild_data(highscores_data.get_guild(interaction.guild_id))
            await interaction.response.send_message(f"Cleared score data for {interaction.guild.name}.", ephemeral=True)
        else:
            await interaction.response.send_message(
                "You shouldn't be using this command. Deletes everything.", ephemeral=True
            )

    @delete.subcommand()
    async def user(self, interaction: nextcord.Interaction):
        """
        Subcommand parent for deleting user information. Never called.
        """

    @user.subcommand(
        description="Removes all of a user's scores. Warning: data is destroyed, use with case.",
    )
    async def from_all(
        self,
        interaction: nextcord.Interaction,
        username: str = nextcord.SlashOption(
            description="User to remove scores for. Note: This is not always a user's discord name."
        ),
    ):
        """
        Searches all of guild's scores data for any score from the user. Removes. Updates table
        message is user was removed from that table.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            username (str): User to remove from highscores
        """
        guild = highscores_data.get_guild(interaction.guild_id)

        user_was_found: bool = False

        # remove user from all tables and categories
        for table in guild.tables:
            table_updated: bool = False
            for category in table.categories:
                # user has a score in category
                if category.remove_score(username):
                    user_was_found = True
                    table_updated = True

            if table_updated:
                await send_highscore_message(interaction.guild.get_channel(guild.highscore_channel), guild, table)

        if not user_was_found:
            await interaction.send(f'User "{username}" was not found.', ephemeral=True)
        else:
            await interaction.send(f'User "{username}" was removed from all tables.')
            highscores_data.save_guild_data(guild)

    @user.subcommand(description="Deletes a user's scores from a category.")
    async def from_category(
        self,
        interaction: nextcord.Interaction,
        table_name: str = nextcord.SlashOption(description="Table to delete user from.", required=True),
        category_name: str = nextcord.SlashOption(description="Category to delete user from.", required=True),
        user_name: str = nextcord.SlashOption(description="User to delete.", required=True),
    ):
        """
        Removes a user from a category. Uses autofill functions to fill out table_name, category_name, and user_name.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            table_name (str): Table to remove user from. Is SlashOption.
            category_name (str): Category to remove user from. Is SlashOption.
            user_name (str): The user to remove. Is SlashOption.
        """

        guild = highscores_data.get_guild(interaction.guild_id)

        try:
            guild.get_table(table_name).get_category(category_name).remove_score(user_name)
            await send_highscore_message(
                interaction.guild.get_channel(guild.highscore_channel), guild, guild.get_table(table_name)
            )
            await interaction.response.send_message(
                f'User "{user_name}" removed from "{category_name}".', ephemeral=True
            )

        except nextcord.errors.ApplicationInvokeError:
            await interaction.response.send_message("Invalid parameter(s).", ephemeral=True)

    @user.subcommand(description="Deletes a user's scores from entire table.")
    async def from_table(
        self,
        interaction: nextcord.Interaction,
        table_name: str = nextcord.SlashOption(description="Table to delete user from.", required=True),
        user_name: str = nextcord.SlashOption(description="User to delete.", required=True),
    ):
        """
        Removes user from a table. Uses autofill functions to fill out table_name and user_name.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            table_name (str): Table to remove user from. Is SlashOption.
            user_name (str): The user to remove. Is SlashOption.
        """
        guild = highscores_data.get_guild(interaction.guild_id)

        try:
            for category in guild.get_table(table_name).categories:
                category.remove_score(user_name)
            await send_highscore_message(
                interaction.guild.get_channel(guild.highscore_channel), guild, guild.get_table(table_name)
            )
            await interaction.response.send_message(f'User "{user_name}" removed from all categories.', ephemeral=True)

        except nextcord.errors.ApplicationInvokeError:
            await interaction.response.send_message("Invalid parameter(s).", ephemeral=True)

    @from_category.on_autocomplete("table_name")
    @from_table.on_autocomplete("table_name")
    async def autocomplete_table(self, interaction: nextcord.Interaction, table_name: str):
        """
        Autocomplete function for table names.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            table_name (str): String to be autocompleted with Table name.
        """
        await interaction.response.send_autocomplete(autofill_tables(interaction.guild_id, table_name))

    @from_category.on_autocomplete("category_name")
    async def autocomplete_category(self, interaction: nextcord.Interaction, category_name: str, table_name: str):
        """
        Autocomplete function for category names.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            category_name (str): String to be autocompleted with Category name.
            table_name (str): Table to find Category from.
        """
        await interaction.response.send_autocomplete(
            autofill_categories(interaction.guild_id, table_name, category_name)
        )

    @from_category.on_autocomplete("user_name")
    @from_table.on_autocomplete("user_name")
    async def autocomplete_user(
        self, interaction: nextcord.Interaction, user_name: str, table_name: str, category_name: Optional[str]
    ):
        """
        Autocomplete functions for user names.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command.
            user_name (str): String to be autocompleted with User name.
            table_name (str): Table to find category from.
            category_name (Optional[str]): Category to find User from, can be None.
        """
        await interaction.response.send_autocomplete(
            autofill_users(interaction.guild_id, table_name, category_name, user_name)
        )

    @nextcord.slash_command(description="Request a username update. Admins must approve.")
    async def update_username(
        self,
        interaction: nextcord.Interaction,
        old_username: str = nextcord.SlashOption(description="Username currently stored in highscores.", required=True),
        new_username: str = nextcord.SlashOption(description="Username to update to.", required=True),
    ):
        """
        Creates a request to send to admins for changing a username. Uses
        UpdateUsernameVerifyView to do the work.

        Args:
            interaction (nextcord.Interaction): Interaction that invoked the command
            old_username (str): Username to replace.
            new_username (str): Username to replace old with.
        """
        guild = highscores_data.get_guild(interaction.guild_id)
        verify_channel = interaction.guild.get_channel(guild.verification_channel)

        embed: nextcord.Embed = nextcord.Embed(title="Username change request.")
        embed.add_field(name="Old Username", value=old_username)
        embed.add_field(name="New Username", value=new_username)
        await verify_channel.send(
            content=f"Username change request from <@{interaction.user.id}>.",
            embed=embed,
            view=UpdateUsernameVerifyView(),
        )
        await interaction.send("Request sent to admins for verification.", ephemeral=True)