using System.Text.Json;
using RadicadeServer.Extensions;
using RadicadeServer.RecNet.Enums.Players;
using RadicadeServer.RecNet.Notifications;
using Xunit;

namespace RadicadeServer.Tests;

/// <summary>
/// A saved announcement has to reach players without a restart. The only lever the client offers
/// for that is its notification table, which is keyed by name and drops any frame whose Id is not
/// the exact registered key - the same contract the community board and the progression frame live
/// under. The server used to push the numeric enum AnnouncementText (26), which matches no
/// registration, so an announcement only ever appeared on the next login.
/// </summary>
public class AnnouncementWireTests
{
	[Fact]
	public void TheAnnouncementGoesOutUnderTheLiteralNameTheClientRegistersItsHandlerFor()
	{
		var frame = AnnouncementBroadcast.Update(new Announcement
		{
			AnnouncementId = 7,
			Title = "Weekend event",
			Body = "Double XP all weekend.",
			Platform = Platforms.All,
		});

		Assert.Equal("AnnouncementUpdate", (string)frame.Id);
		Assert.Contains("\"Id\":\"AnnouncementUpdate\"", frame.ToJson());

		// Not the numeric enum (26): the client registers the announcement handler by name and
		// drops any frame whose Id is not the exact key, which is why a saved announcement used to
		// be invisible until the game was restarted.
		Assert.DoesNotContain("\"Id\":\"26\"", frame.ToJson());
	}

	[Fact]
	public void TheAnnouncementFrameCarriesTheSavedAnnouncement()
	{
		var frame = AnnouncementBroadcast.Update(new Announcement
		{
			AnnouncementId = 7,
			Title = "Weekend event",
			Body = "Double XP all weekend.",
		});

		using var doc = JsonDocument.Parse(frame.ToJson());
		var msg = doc.RootElement.GetProperty("Msg");

		Assert.Equal(7L, msg.GetProperty("AnnouncementId").GetInt64());
		Assert.Equal("Weekend event", msg.GetProperty("Title").GetString());
		Assert.Equal("Double XP all weekend.", msg.GetProperty("Body").GetString());
	}

	[Fact]
	public void ARemovedAnnouncementGoesOutUnderTheDeleteLiteralTheClientRegisters()
	{
		var frame = AnnouncementBroadcast.Delete(new Announcement
		{
			AnnouncementId = 7,
			Title = "Weekend event",
			Body = "Double XP all weekend.",
			Platform = Platforms.All,
		});

		// A delete is its own registration on the client, so a removed announcement leaves the
		// on-screen list on the spot instead of waiting for the next api/announcement/v1/get.
		Assert.Equal("AnnouncementDelete", (string)frame.Id);
		Assert.Contains("\"Id\":\"AnnouncementDelete\"", frame.ToJson());

		using var doc = JsonDocument.Parse(frame.ToJson());
		Assert.Equal(7L, doc.RootElement.GetProperty("Msg").GetProperty("AnnouncementId").GetInt64());
	}
}