namespace PkmnLib.Plugin.Gen7.Scripts.Moves;

[Script(ScriptCategory.Move, "drain")]
public class Drain : Script
{
    public float DrainModifier { get; set; } = 0.5f;

    /// <inheritdoc />
    public override void OnInitialize(IReadOnlyDictionary<StringKey, object?>? parameters)
    {
        base.OnInitialize(parameters);
        if (parameters == null)
            return;
        DrainModifier = parameters.GetValueOrDefault("drain_modifier") as float? ?? DrainModifier;
    }

    /// <inheritdoc />
    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
    {
        var user = move.User;
        var damage = move.GetHitData(target, hit).Damage;
        var healed = (uint)(damage * DrainModifier);
        if (move.User.HasHeldItem("big_root"))
            healed = (uint)(healed * 1.3f);
        var invert = false;
        var parameters = new Dictionary<StringKey, object?>
        {
            { "user", user },
            { "target", target },
            { "damage", damage },
            { "healed", healed },
            { "invert", invert },
        };
        target.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyDrain, parameters));
        if (parameters.TryGetValue("invert", out var invertObj) && invertObj is bool invertBool)
            invert = invertBool;

        if (invert)
        {
            user.Damage(damage, DamageSource.Misc);
        }
        else
        {
            user.Heal(healed);
        }
    }
}