using PkmnLib.Dynamic.Models;
using PkmnLib.Dynamic.ScriptHandling.Registry;
using PkmnLib.Plugin.Gen7.Scripts.Moves;
using GrassyTerrainScript = PkmnLib.Plugin.Gen7.Scripts.Terrain.GrassyTerrain;

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

/// <summary>
/// Tests for the <see cref="GrassyTerrain"/> move script.
/// Gen VII Bulbapedia behavior (Generations VI to VII): "Grassy Terrain creates terrain that envelops the
/// field and replaces the background environment and any other terrain that is already in effect."
/// </summary>
public class GrassyTerrainTests
{
    private static (GrassyTerrain script, IExecutingMove move, IBattle battle) CreateTestSetup()
    {
        var script = new GrassyTerrain();
        var move = Substitute.For<IExecutingMove>();

        var battle = Substitute.For<IBattle>();

        var user = Substitute.For<IBattlePokemon>();
        move.User.Returns(user);
        user.Battle.Returns(battle);

        return (script, move, battle);
    }

    /// <summary>
    /// Bulbapedia: Grassy Terrain "envelops the field and replaces the background environment and any
    /// other terrain that is already in effect" — the move sets the battle's terrain to the
    /// <see cref="GrassyTerrainScript"/> terrain script.
    /// </summary>
    [Test]
    public void OnSecondaryEffect_SetsGrassyTerrainOnBattle()
    {
        // Arrange
        var (script, move, battle) = CreateTestSetup();

        // Act
        script.OnSecondaryEffect(move, Substitute.For<IBattlePokemon>(), 0);

        // Assert
        battle.Received(1).SetTerrain(ScriptUtils.ResolveName<GrassyTerrainScript>());
    }
}