from typing import *
import royalnet
import royalnet.commands as rc
import royalnet.utils as ru
from ..types import Faction
from ..tables import DndBattleUnit
from ..utils import get_active_battle
from ..types import Health


class DndaddunitCommand(rc.Command):
    name: str = "dndaddunit"

    description: str = "Add an Unit to a Battle."

    aliases = ["dau", "dndau", "addunit", "daddunit"]

    syntax: str = "{faction} {name} {initiative} {health} {armorclass}"

    async def run(self, args: rc.CommandArgs, data: rc.CommandData) -> None:
        faction = Faction[args[0].upper()]
        name = args[1]
        initiative = int(args[2])
        health = args[3]
        armor_class = int(args[4])

        DndBattleUnitT = self.alchemy.get(DndBattleUnit)

        async with data.session_acm() as session:
            active_battle = await get_active_battle(session=session, data=data)
            if active_battle is None:
                raise rc.CommandError("No battle is active in this chat.")

            units_with_same_name = await ru.asyncify(session.query(DndBattleUnitT).filter_by(
                name=name,
                battle=active_battle.battle
            ).all)

            if len(units_with_same_name) != 0:
                raise rc.InvalidInputError("A unit with the same name already exists.")

            try:
                health = Health.from_text(health)
            except ValueError:
                raise rc.InvalidInputError("Invalid health string.")

            dbu = DndBattleUnitT(
                linked_character_id=None,
                initiative=initiative,
                faction=faction,
                name=name,
                health_string=health,
                armor_class=armor_class,
                battle=active_battle.battle
            )

            session.add(dbu)
            await ru.asyncify(session.commit)

            await data.reply(f"{dbu}\n"
                             f"joins the battle!")

            if dbu.health.hidden:
                await data.delete_invoking()