using AibisDream.SaveSystem;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using NUnit.Framework;

namespace AibisDream.SystemEditor.Tests
{
    public sealed class PresentationSnapshotContractTests
    {
        [Test]
        public void Providers_UseDistinctStableIdsAndRestoreBeforeScreen()
        {
            var showcase = new ShowcaseSnapshotProvider();
            var playTool = new PlayToolSnapshotProvider();
            var screen = new ScreenSnapshotProvider();

            Assert.That(showcase.SaveId, Is.EqualTo("showcase"));
            Assert.That(playTool.SaveId, Is.EqualTo("playTool"));
            Assert.That(showcase.RestoreOrder, Is.LessThan(playTool.RestoreOrder));
            Assert.That(playTool.RestoreOrder, Is.LessThan(screen.RestoreOrder));
        }

        [Test]
        public void PresentationSections_RoundTripThroughSnapshotJson()
        {
            var source = new SaveSnapshot();
            source.sections[SnapshotProviderIds.PlayTool] = new PlayToolSnapshotDto
            {
                isObjVisible = true,
                objPicName = "证物",
                isFullScreenVisible = true,
                fullScreenPicName = "教室"
            };
            source.sections[SnapshotProviderIds.Showcase] = new ShowcaseSnapshotDto
            {
                displayMode = nameof(ShowcaseDisplayMode.Small),
                picName = "D2S轱辘",
                usesSplitLayers = true
            };

            var json = JsonConvert.SerializeObject(source);
            var restored = JsonConvert.DeserializeObject<SaveSnapshot>(json);
            var playTool = ((JObject)restored.sections[SnapshotProviderIds.PlayTool])
                .ToObject<PlayToolSnapshotDto>();
            var showcase = ((JObject)restored.sections[SnapshotProviderIds.Showcase])
                .ToObject<ShowcaseSnapshotDto>();

            Assert.That(playTool.isObjVisible, Is.True);
            Assert.That(playTool.objPicName, Is.EqualTo("证物"));
            Assert.That(playTool.isFullScreenVisible, Is.True);
            Assert.That(playTool.fullScreenPicName, Is.EqualTo("教室"));
            Assert.That(showcase.displayMode, Is.EqualTo(nameof(ShowcaseDisplayMode.Small)));
            Assert.That(showcase.picName, Is.EqualTo("D2S轱辘"));
            Assert.That(showcase.usesSplitLayers, Is.True);
            Assert.That(restored.schemaVersion, Is.EqualTo(1));
        }

        [Test]
        public void OldSnapshotWithoutPresentationSections_RemainsCompatible()
        {
            var restored = JsonConvert.DeserializeObject<SaveSnapshot>(
                "{\"schemaVersion\":1,\"sections\":{}}");

            Assert.That(restored.schemaVersion, Is.EqualTo(SaveSnapshotSchema.CurrentVersion));
            Assert.That(restored.sections.ContainsKey(SnapshotProviderIds.PlayTool), Is.False);
            Assert.That(restored.sections.ContainsKey(SnapshotProviderIds.Showcase), Is.False);
        }
    }
}