using System.IO;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Text.Json.Serialization;
using DTLib.Extensions;

namespace ParadoxSaveParser.Lib.Tests;

[TestFixture]
[TestOf(typeof(ISearchExpression))]
public class SearchExpressionTests
{
    [SetUp]
    public void Setup()
    {
        _smallSaveData = "EU4txt a={ b={ c=0 d=1 e=2 } f=3 }".ToBytes();
    }

    private byte[] _smallSaveData;


    private static readonly JsonSerializerOptions _smallSaveSerializerOptions = new()
    {
        WriteIndented = false,
        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
        MaxDepth = 1024,
        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
    };

    internal static string JsonToPdx(string json)
        => json.Substring(1, json.Length - 2)
            .Replace(",", " ").Replace("{", "{ ").Replace("}", " }")
            .Replace("\"", "").Replace("[", "").Replace("]", "").Replace(":", "=");

    [TestCase("a", "a={ b={ c=0 d=1 e=2 } f=3 }")]
    [TestCase("a.*", "a={ b={ c=0 d=1 e=2 } f=3 }")]
    [TestCase("a.b", "a={ b={ c=0 d=1 e=2 } }")]
    [TestCase("a.[0].c", "a={ b={ c=0 } }")]
    [TestCase("a.[1]", "a={ f=3 }")]
    [TestCase("a.b.(c|d)", "a={ b={ c=0 d=1 } }")]
    [TestCase("a.(b.e|f)", "a={ b={ e=2 } f=3 }")]
    public void TestSearchOnSmallData(string input, string expectedOutput)
    {
        using var saveStream = new MemoryStream(_smallSaveData, false);
        var se = SearchExpressionCompiler.Compile(input);
        var parser = new SaveParserEU4(saveStream, se);
        var rootNode = parser.Parse();
        string json = JsonSerializer.Serialize(rootNode, _smallSaveSerializerOptions);
        string pdx = JsonToPdx(json);
        Assert.That(pdx, Is.EqualTo(expectedOutput));
    }
}