using Core.Parsers.EventOccurrence;
using NUnit.Framework;

namespace Tests.Parsers.EventOccurrence;

[TestFixture]
public class LineClassifier_Tests
{
    [Test]
    public void IsEmptyLine_EmptyString_ReturnsTrue()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsEmptyLine(""), Is.True);
    }

    [Test]
    public void IsEmptyLine_WhitespaceOnly_ReturnsTrue()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsEmptyLine("   "), Is.True);
        Assert.That(LineClassifier.IsEmptyLine("\t\n"), Is.True);
    }

    [Test]
    public void IsEmptyLine_NonEmpty_ReturnsFalse()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsEmptyLine("Some text"), Is.False);
    }

    [Test]
    public void IsCommentLine_StartsWithHash_ReturnsTrue()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsCommentLine("# This is a comment"), Is.True);
    }

    [Test]
    public void IsCommentLine_NoHash_ReturnsFalse()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsCommentLine("Not a comment"), Is.False);
    }

    [Test]
    public void IsContinuationLine_ParentheticalNote_ReturnsTrue()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsContinuationLine("(Semifinalists only)"), Is.True);
        Assert.That(LineClassifier.IsContinuationLine("(Note: Some information)"), Is.True);
    }

    [Test]
    public void IsContinuationLine_StartsWithAsterisk_ReturnsTrue()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsContinuationLine("*The books of semifinalist teams"), Is.True);
        Assert.That(LineClassifier.IsContinuationLine("*Note: Important details"), Is.True);
        Assert.That(LineClassifier.IsContinuationLine("*This is a continuation line"), Is.True);
        Assert.That(LineClassifier.IsContinuationLine("  *Line with leading whitespace"), Is.True);
    }

    [Test]
    public void IsContinuationLine_DoesNotStartWithAsterisk_ReturnsFalse()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsContinuationLine("The event will be held"), Is.False);
        Assert.That(LineClassifier.IsContinuationLine("Note: Additional information"), Is.False);
        Assert.That(LineClassifier.IsContinuationLine("Important Event March 15"), Is.False);
        Assert.That(LineClassifier.IsContinuationLine("Schedule Posted on website"), Is.False);
    }

    [Test]
    public void IsContinuationLine_RegularEventLine_ReturnsFalse()
    {
        // Act & Assert
        Assert.That(LineClassifier.IsContinuationLine("Test Event March 15 3:00 p.m. Room A"), Is.False);
    }
}