namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;

[Script(ScriptCategory.Side, "follow_me")]
public class FollowMeEffect : Script, IScriptChangeIncomingTargets, IScriptOnEndTurn, IScriptOnFaint, IScriptOnSwitchOut
{
    private readonly IPokemon _user;

    public FollowMeEffect(IPokemon user)
    {
        _user = user;
    }

    /// <inheritdoc />
    public void ChangeIncomingTargets(IMoveChoice moveChoice, ref IReadOnlyList<IPokemon?> targets)
    {
        if (targets.Count != 1)
            return;
        if (moveChoice.ChosenMove.MoveData.HasFlag(MoveFlags.NoRedirection))
            return;

        if (moveChoice.User.BattleData?.SideIndex == _user.BattleData?.SideIndex)
            return;
        targets = [_user];
    }

    public void OnEndTurn(IScriptSource owner, IBattle battle)
    {
        RemoveSelf();
    }

    public void OnFaint(IPokemon pokemon, DamageSource source)
    {
        if (pokemon == _user)
            RemoveSelf();
    }

    public void OnSwitchOut(IPokemon oldPokemon, byte position)
    {
        if (oldPokemon == _user)
            RemoveSelf();
    }
}