using System.Text;
using ModuleCore.Calendar;

namespace ModuleTests.Calendar;

public class MarkedDayRenderTests
{
	private static readonly VerifySettings Settings;

	static MarkedDayRenderTests()
	{
		Settings = new VerifySettings();
		var testBaseDirectory = Path.Join(TestConstants.SnapshotFolderName, nameof(MarkedDayRenderTests));

		Settings.UseDirectory(testBaseDirectory);
		Settings.DisableDiff();
	}

	[Fact]
	public Task DefaultMarkedDayRender()
	{
		Settings.UseFileName(nameof(DefaultMarkedDayRender));

		var date = new DateTime(2026, 8, 1);
		var calendar = new CalendarGenerator();
		var renderedMonth = calendar.Render(date, date.AddDays(15));

		return Verify(renderedMonth, Settings);
	}

	[Fact]
	public Task SimpleMarkedDayRender()
	{
		Settings.UseFileName(nameof(SimpleMarkedDayRender));

		var date = new DateTime(2026, 8, 1);
		var calendar = new CalendarGenerator("|");
		var renderedMonth = calendar.Render(date, date.AddDays(15));

		return Verify(renderedMonth, Settings);
	}

	[Fact]
	public Task LongMarkedDayRender()
	{
		Settings.UseFileName(nameof(LongMarkedDayRender));

		var date = new DateTime(2026, 8, 1);
		var calendar = new CalendarGenerator("passed");
		var renderedMonth = calendar.Render(date, date.AddDays(15));

		return Verify(renderedMonth, Settings);
	}

	[Fact]
	public Task EmojiMarkedDayRender()
	{
		Settings.UseFileName(nameof(EmojiMarkedDayRender));

		var date = new DateTime(2026, 8, 1);
		var calendar = new CalendarGenerator("🤫");
		var sb = new StringBuilder();
		sb.AppendLine("Emojis will display incorrectly in text but output correctly in terminals with UTF-8 encoding.")
			.AppendLine(calendar.Render(date, date.AddDays(15)));

		return Verify(sb, Settings);
	}

	[Fact]
	public Task DoubleWideMarkedDayRender()
	{
		Settings.UseFileName(nameof(DoubleWideMarkedDayRender));

		var date = new DateTime(2026, 8, 1);
		// Using an asian-character to have a test covering the unfortunate reality of character rendering of
		// characters that are visually 1 character in width, but render as double width or some other cursed form.
		// Written language was a mistake but trying to render it on computers alongside a different one
		// is arguably worse.
		var calendar = new CalendarGenerator("火");
		var sb = new StringBuilder();
		sb.AppendLine("Double-wide characters will display incorrectly but still tested until rendering can be improved")
			.AppendLine(calendar.Render(date, date.AddDays(15)));

		return Verify(sb, Settings);
	}
}