Radicade/ServerTests/DiscordWebhookTests.cs

using System.Text.Json;
using Microsoft.Extensions.Configuration;
using RadicadeServer.Discord.Webhooks;
using RadicadeServer.Radicade.Discord;
using Xunit;

namespace RadicadeServer.Tests;

public sealed class DiscordWebhookTests
{
	[Fact]
	public void WebhookConfig_LoadsLocalFileAndLetsConfigurationOverrideIt()
	{
		var root = Path.Combine(AppContext.BaseDirectory, $"webhook-config-test-{Guid.NewGuid():N}");
		var webhookDirectory = Path.Combine(root, "Discord", "Webhooks");
		Directory.CreateDirectory(webhookDirectory);

		try
		{
			File.WriteAllText(Path.Combine(webhookDirectory, "webhooks.json"), """
			{
			  "BanAppeals": "https://discord.com/api/webhooks/123/appeal",
			  "Reports": "https://discord.com/api/webhooks/123/file-report"
			}
			""");

			var configuration = new ConfigurationBuilder()
				.AddInMemoryCollection(new Dictionary<string, string?>
				{
					["Radicade:Discord:Webhooks:Reports"] = "https://discord.com/api/webhooks/456/config-report"
				})
				.Build();

			WebhookConfig.Load(configuration, root);

			Assert.Equal("https://discord.com/api/webhooks/123/appeal", WebhookConfig.BanAppealsUrl);
			Assert.Equal("https://discord.com/api/webhooks/456/config-report", WebhookConfig.ReportsUrl);
		}
		finally
		{
			WebhookConfig.Load(new ConfigurationBuilder().Build(), Path.Combine(root, "missing"));
			Directory.Delete(root, recursive: true);
		}
	}

	[Theory]
	[InlineData("Club", "https://cdn.radicade.app/ClubReport.png")]
	[InlineData("Player", "https://cdn.radicade.app/PlayerReport.png")]
	[InlineData("Room", "https://cdn.radicade.app/RoomReport.png")]
	[InlineData("Event", "https://cdn.radicade.app/EventReport.png")]
	[InlineData("Invention", "https://cdn.radicade.app/InventionReport.png")]
	public void ReportImage_MatchesReportCategory(string reportType, string expectedUrl)
		=> Assert.Equal(expectedUrl, WebhookImages.ForReport(reportType));

	[Fact]
	public void ReportImage_IsNotAssignedToUnspecifiedCategories()
		=> Assert.Null(WebhookImages.ForReport("Board"));

	[Fact]
	public void CategoryArtwork_IsSerializedAsThumbnailRatherThanLargeImage()
	{
		var payload = new DiscordPayload
		{
			Title = "Bug report",
			ThumbnailUrl = WebhookImages.BugReport
		};

		using var document = JsonDocument.Parse(DiscordPayloadJson.Build(payload));
		var embed = document.RootElement.GetProperty("embeds")[0];

		Assert.Equal(WebhookImages.BugReport, embed.GetProperty("thumbnail").GetProperty("url").GetString());
		Assert.False(embed.TryGetProperty("image", out _));
	}

	[Fact]
	public void UploadedBugScreenshot_RemainsTheLargeImageAlongsideCategoryThumbnail()
	{
		var payload = new DiscordPayload
		{
			Title = "Bug report",
			ThumbnailUrl = WebhookImages.BugReport
		};

		using var document = JsonDocument.Parse(DiscordPayloadJson.Build(payload, embedImageUrl: "attachment://screenshot.png"));
		var embed = document.RootElement.GetProperty("embeds")[0];

		Assert.Equal("attachment://screenshot.png", embed.GetProperty("image").GetProperty("url").GetString());
		Assert.Equal(WebhookImages.BugReport, embed.GetProperty("thumbnail").GetProperty("url").GetString());
	}
}