using System.Text.RegularExpressions;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Formatting;
using MLEM.Formatting.Codes;
using MLEM.Textures;
using NUnit.Framework;

namespace Tests {
    public class FormattingTests {

        [Test]
        public void TestMacros() {
            var formatter = new TextFormatter();
            formatter.Macros.Add(new Regex("<testmacro>"), (f, m, r) => "<test1>");
            formatter.Macros.Add(new Regex("<test1>"), (f, m, r) => "<test2>blue");
            formatter.Macros.Add(new Regex("<test2>"), (f, m, r) => "<c Blue>");
            const string strg = "This text uses a bunch of non-breaking~spaces to see if macros work. Additionally, it uses a macro that resolves into a bunch of other macros and then, at the end, into <testmacro> text</c>.";
            const string goal = "This text uses a bunch of non-breaking\u00A0spaces to see if macros work. Additionally, it uses a macro that resolves into a bunch of other macros and then, at the end, into <c Blue>blue text</c>.";
            Assert.AreEqual(formatter.ResolveMacros(strg), goal);
        }

        [Test]
        public void TestFormatting() {
            using var game = TestGame.Create();
            var formatter = new TextFormatter();
            formatter.AddImage("Test", new TextureRegion((Texture2D) null, 0, 8, 24, 24));
            const string strg = "Lorem Ipsum <i Test> is simply dummy text of the <i Test> printing and typesetting <i Test> industry. Lorem Ipsum has been the industry's standard dummy text <i Test> ever since the <i Test> 1500s, when <i Test><i Test><i Test><i Test><i Test><i Test><i Test> an unknown printer took a galley of type and scrambled it to make a type specimen book.";
            var ret = formatter.Tokenize(game.UiSystem.Style.Font, strg);
            Assert.AreEqual(ret.Tokens.Length, 13);
            Assert.AreEqual(ret.DisplayString, "Lorem Ipsum \u2003 is simply dummy text of the \u2003 printing and typesetting \u2003 industry. Lorem Ipsum has been the industry's standard dummy text \u2003 ever since the \u2003 1500s, when \u2003\u2003\u2003\u2003\u2003\u2003\u2003 an unknown printer took a galley of type and scrambled it to make a type specimen book.");
            Assert.AreEqual(ret.AllCodes.Length, 12);
        }

    }
}