using PkmnLib.Dynamic.Models;
using PkmnLib.Plugin.Gen7.Scripts.Moves;

namespace PkmnLib.Plugin.Gen7.Tests.Scripts.Moves;

/// <summary>
/// Tests for the <see cref="LowKick"/> move script.
/// Gen VII Bulbapedia behavior (Generation III onwards): "Low Kick now has 100% accuracy, and its power is
/// now dependent on the weight of the target, inflicting greater damage on heavier targets."
/// </summary>
public class LowKickTests
{
    /// <summary>
    /// Bulbapedia weight-to-power table: 0.1–9.9 kg → 20, 10.0–24.9 kg → 40, 25.0–49.9 kg → 60,
    /// 50.0–99.9 kg → 80, 100.0–199.9 kg → 100, 200.0+ kg → 120. Each row tests a boundary of the table.
    /// </summary>
    [Test, Arguments(0.1f, 20), Arguments(9.9f, 20), Arguments(10.0f, 40), Arguments(24.9f, 40), Arguments(25.0f, 60),
     Arguments(49.9f, 60), Arguments(50.0f, 80), Arguments(99.9f, 80), Arguments(100.0f, 100), Arguments(199.9f, 100),
     Arguments(200.0f, 120), Arguments(950.0f, 120)]
    public async Task ChangeBasePower_TargetWeight_PowerFollowsWeightTable(float weightInKg, int expectedPower)
    {
        // Arrange
        var script = new LowKick();
        var move = Substitute.For<IExecutingMove>();
        var target = Substitute.For<IBattlePokemon>();
        target.WeightInKg.Returns(weightInKg);
        ushort basePower = 50;

        // Act
        script.ChangeBasePower(move, target, 0, ref basePower);

        // Assert
        await Assert.That(basePower).IsEqualTo((ushort)expectedPower);
    }

    /// <summary>
    /// Bulbapedia: the power is "dependent on the weight of the target" only — the move's original base
    /// power is irrelevant and fully replaced by the table value.
    /// </summary>
    [Test]
    public async Task ChangeBasePower_HighOriginalBasePower_OverwrittenByWeightTable()
    {
        // Arrange
        var script = new LowKick();
        var move = Substitute.For<IExecutingMove>();
        var target = Substitute.For<IBattlePokemon>();
        target.WeightInKg.Returns(5f);
        var basePower = ushort.MaxValue;

        // Act
        script.ChangeBasePower(move, target, 0, ref basePower);

        // Assert
        await Assert.That(basePower).IsEqualTo((ushort)20);
    }
}