"""Get command hierarchy."""

import nextcord
from nextcord.ext import commands
from sqlmodel import Session, col, select

from database.db import engine
from database.models import Category, CategoryGroup
from utilities.utils import autofill_categories, autofill_groups


class GetCog(commands.Cog, name="Get command."):
    """Class holds commands for setting variables in guild's database."""

    def __init__(self) -> None:
        """Default constructor for SetCog class. Does nothing."""

    @nextcord.slash_command(default_member_permissions=nextcord.Permissions(administrator=True))
    async def get(self, interaction: nextcord.Interaction) -> None:
        """Parent slash command for getting. Never called."""

    @get.subcommand(description="Commands for getting category information.")
    async def category(self, interaction: nextcord.Interaction) -> None:
        """Parent slash subcommand for getting category information. Never called."""

    @category.subcommand(description="Get whether a category is sorted in ascending or descending order.")
    async def is_ascending(
        self,
        interaction: nextcord.Interaction,
        group_id: str = nextcord.SlashOption(name="group", description="Group that Category is in.", required=True),
        category_id: str = nextcord.SlashOption(
            name="category", description="Category to information from.", required=True
        ),
    ) -> None:
        """
        Command to view how a category is sorted.

        Args:
            interaction (nextcord.Interaction):  Interaction that invoked the command.
            group_id (str): String representation of Group id to register channel to. Is SlashOption.
            category_id (str): String representation of Category id to register channel to. Is SlashOption.
        """
        stmt = (
            select(Category).where(col(CategoryGroup.id) == int(group_id)).where(col(Category.id) == int(category_id))
        )

        with Session(engine) as session:
            category = session.scalar(stmt)
            if category is None:
                await interaction.response.send_message("Group or Category was not found.", ephemeral=True)
                return

            await interaction.response.send_message(
                f"{category.name} is sorted in {'ascending' if category.is_ascending else 'descending'} order.",
                ephemeral=True,
            )

    @category.subcommand(description="Get whether a category required validation.")
    async def is_validated(
        self,
        interaction: nextcord.Interaction,
        group_id: str = nextcord.SlashOption(name="group", description="Group that Category is in.", required=True),
        category_id: str = nextcord.SlashOption(
            name="category", description="Category to information from.", required=True
        ),
    ) -> None:
        """
        Command to view if a category required photo validation.

        Args:
            interaction (nextcord.Interaction):  Interaction that invoked the command.
            group_id (str): String representation of Group id to register channel to. Is SlashOption.
            category_id (str): String representation of Category id to register channel to. Is SlashOption.
        """
        stmt = (
            select(Category).where(col(CategoryGroup.id) == int(group_id)).where(col(Category.id) == int(category_id))
        )

        with Session(engine) as session:
            category = session.scalar(stmt)
            if category is None:
                await interaction.response.send_message("Group or Category was not found.", ephemeral=True)
                return

            await interaction.response.send_message(
                f"{category.name} does {'not ' if not category.is_validated else ''} require validation.",
                ephemeral=True,
            )

    @category.subcommand(description="Get the size for a category.")
    async def size(
        self,
        interaction: nextcord.Interaction,
        group_id: str = nextcord.SlashOption(name="group", description="Group that Category is in.", required=True),
        category_id: str = nextcord.SlashOption(name="category", description="Category to get size of.", required=True),
    ) -> None:
        """
        Command to view a category's size.

        Args:
            interaction (nextcord.Interaction):  Interaction that invoked the command.
            group_id (str): String representation of Group id to register channel to. Is SlashOption.
            category_id (str): String representation of Category id to register channel to. Is SlashOption.
        """
        stmt = (
            select(Category).where(col(CategoryGroup.id) == int(group_id)).where(col(Category.id) == int(category_id))
        )

        with Session(engine) as session:
            category = session.scalar(stmt)
            if category is None:
                await interaction.response.send_message("Group or Category was not found.", ephemeral=True)
                return

            await interaction.response.send_message(f"{category.name} has a size of {category.size}.", ephemeral=True)

    @get.subcommand(description="Commands for getting group information.")
    async def group(self, interaction: nextcord.Interaction) -> None:
        """Parent slash subcommand for getting group information. Never called."""

    @is_ascending.on_autocomplete("category_id")
    @is_validated.on_autocomplete("category_id")
    @size.on_autocomplete("category_id")
    async def category_autocomplete(self, interaction: nextcord.Interaction, category_id: str, group_id: str) -> None:
        """
        Autocomplete function for category names.

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

    @is_ascending.on_autocomplete("group_id")
    @is_validated.on_autocomplete("group_id")
    @size.on_autocomplete("group_id")
    async def group_autocomplete(self, interaction: nextcord.Interaction, group_id: str) -> None:
        """
        Sends results from autofill_groups back to group_output_channel for autocompletion of group_id.

        Args:
            interaction (nextcord.Interaction): Interaction with command.
            group_id (str): String to run autocompletion against.
        """
        await interaction.response.send_autocomplete(autofill_groups(interaction.guild_id, group_id))