namespace UnitTests_Parallelizable.DriverTests;

public class MouseInterpreterTests
{
    [Theory]
    [MemberData (nameof (SequenceTests))]
    public void TestMouseEventSequences_InterpretedOnlyAsFlag (List<MouseEventArgs> events, params MouseFlags? [] expected)
    {
        // Arrange: Mock dependencies and set up the interpreter
        var interpreter = new MouseInterpreter ();

        // Act and Assert
        for (var i = 0; i < events.Count; i++)
        {
            MouseEventArgs [] results = interpreter.Process (events [i]).ToArray ();

            // Raw input event should be there
            Assert.Equal (events [i].Flags, results [0].Flags);

            // also any expected should be there
            if (expected [i] != null)
            {
                Assert.Equal (expected [i], results [1].Flags);
            }
            else
            {
                Assert.Single (results);
            }
        }
    }

    public static IEnumerable<object []> SequenceTests ()
    {
        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button1Pressed },
                new ()
            },
            null,
            MouseFlags.Button1Clicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button1Pressed },
                new (),
                new () { Flags = MouseFlags.Button1Pressed },
                new ()
            },
            null,
            MouseFlags.Button1Clicked,
            null,
            MouseFlags.Button1DoubleClicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button1Pressed },
                new (),
                new () { Flags = MouseFlags.Button1Pressed },
                new (),
                new () { Flags = MouseFlags.Button1Pressed },
                new ()
            },
            null,
            MouseFlags.Button1Clicked,
            null,
            MouseFlags.Button1DoubleClicked,
            null,
            MouseFlags.Button1TripleClicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button2Pressed },
                new (),
                new () { Flags = MouseFlags.Button2Pressed },
                new (),
                new () { Flags = MouseFlags.Button2Pressed },
                new ()
            },
            null,
            MouseFlags.Button2Clicked,
            null,
            MouseFlags.Button2DoubleClicked,
            null,
            MouseFlags.Button2TripleClicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button3Pressed },
                new (),
                new () { Flags = MouseFlags.Button3Pressed },
                new (),
                new () { Flags = MouseFlags.Button3Pressed },
                new ()
            },
            null,
            MouseFlags.Button3Clicked,
            null,
            MouseFlags.Button3DoubleClicked,
            null,
            MouseFlags.Button3TripleClicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button4Pressed },
                new (),
                new () { Flags = MouseFlags.Button4Pressed },
                new (),
                new () { Flags = MouseFlags.Button4Pressed },
                new ()
            },
            null,
            MouseFlags.Button4Clicked,
            null,
            MouseFlags.Button4DoubleClicked,
            null,
            MouseFlags.Button4TripleClicked
        ];

        yield return
        [
            new List<MouseEventArgs>
            {
                new () { Flags = MouseFlags.Button1Pressed, Position = new (10, 11) },
                new () { Position = new (10, 11) },

                // Clicking the line below means no double click because it's a different location
                new () { Flags = MouseFlags.Button1Pressed, Position = new (10, 12) },
                new () { Position = new (10, 12) }
            },
            null,
            MouseFlags.Button1Clicked,
            null,
            MouseFlags.Button1Clicked //release is click because new position
        ];
    }
}