using ClaudeDo.Localization;
using ClaudeDo.Ui.Localization;

namespace ClaudeDo.Ui.Tests;

public class LocalizedStringTests
{
    private static Localizer Make()
    {
        var dir = Path.Combine(Path.GetTempPath(), "loc_" + Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(dir);
        File.WriteAllText(Path.Combine(dir, "en.json"),
            """{ "metadata": { "code": "en", "name": "English" }, "settings": { "save": "Save" } }""");
        File.WriteAllText(Path.Combine(dir, "de.json"),
            """{ "metadata": { "code": "de", "name": "Deutsch" }, "settings": { "save": "Speichern" } }""");
        return new Localizer(LocaleStore.Load(dir), "en");
    }

    [Fact]
    public void Value_tracks_language_change()
    {
        var loc = Make();
        var ls = new LocalizedString(loc, "settings.save");
        Assert.Equal("Save", ls.Value);

        string? changed = null;
        ls.PropertyChanged += (_, e) => { if (e.PropertyName == nameof(LocalizedString.Value)) changed = ls.Value; };

        loc.SetLanguage("de");
        Assert.Equal("Speichern", ls.Value);
        Assert.Equal("Speichern", changed);
    }
}