using System.Collections.Generic;
using PkmnLib.Dynamic.Libraries;
using PkmnLib.Dynamic.Models;
using PkmnLib.Dynamic.ScriptHandling;
using PkmnLib.Dynamic.ScriptHandling.Registry;
using PkmnLib.Static.Utils;

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(IDynamicLibrary library, IReadOnlyDictionary<StringKey, object?>? parameters)
    {
        base.OnInitialize(library, 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);
        user.Heal(healed, false);
    }
}