using PkmnLib.Static.Utils;

namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;

[Script(ScriptCategory.Ability, "anticipation")]
public class Anticipation : Script
{
    private IPokemon? _owner;

    /// <inheritdoc />
    public override void OnAddedToParent(IScriptSource source)
    {
        if (source is not IPokemon pokemon)
            throw new ArgumentException("Anticipation script can only be added to a Pokemon.", nameof(source));
        _owner = pokemon;
    }

    /// <inheritdoc />
    public override void OnOpponentSwitchIn(IPokemon pokemon, byte position)
    {
        if (_owner is null)
            return;
        var pokemonMoves = pokemon.Moves.WhereNotNull();
        var typeLibrary = pokemon.Library.StaticLibrary.Types;
        var relevantMoves = pokemonMoves.Any(move =>
            // Either the move is super effective against the owner or
            typeLibrary.GetEffectiveness(move.MoveData.MoveType, _owner.Types) > 1.0f ||
            // the move is a OHKO move
            move.MoveData.SecondaryEffect?.Name == "one_hit_ko" ||
            // the move is a self-destruct move
            move.MoveData.SecondaryEffect?.Name == "self_destruct" ||
            move.MoveData.SecondaryEffect?.Name == "explosion");

        if (relevantMoves)
        {
            pokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(_owner));
        }
    }
}