private AssembleSources()

in src/tooling/docs-assembler/AssembleSources.cs [58:108]
47 lines of code
3 McCabe index (conditional complexity)

	private AssembleSources(AssembleContext assembleContext, Checkout[] checkouts)
	{
		AssembleContext = assembleContext;
		TocTopLevelMappings = GetConfiguredSources(assembleContext);
		HistoryMappings = GetHistoryMapping(assembleContext);

		var crossLinkFetcher = new AssemblerCrossLinkFetcher(NullLoggerFactory.Instance, assembleContext.Configuration, assembleContext.Environment);
		UriResolver = new PublishEnvironmentUriResolver(TocTopLevelMappings, assembleContext.Environment);
		var crossLinkResolver = new CrossLinkResolver(crossLinkFetcher, UriResolver);
		AssembleSets = checkouts
			.Where(c => !c.Repository.Skip)
			.Select(c => new AssemblerDocumentationSet(NullLoggerFactory.Instance, assembleContext, c, crossLinkResolver, TreeCollector))
			.ToDictionary(s => s.Checkout.Repository.Name, s => s)
			.ToFrozenDictionary();

		TocConfigurationMapping = TocTopLevelMappings
			.Select(kv =>
			{
				var repo = kv.Value.Source.Scheme;
				if (!AssembleSets.TryGetValue(repo, out var set))
					throw new Exception($"Unable to find repository: {repo}");

				var fs = set.BuildContext.ReadFileSystem;
				var config = set.BuildContext.Configuration;
				var tocDirectory = Path.Combine(config.ScopeDirectory.FullName, kv.Value.Source.Host, kv.Value.Source.AbsolutePath.TrimStart('/'));
				var relative = Path.GetRelativePath(config.ScopeDirectory.FullName, tocDirectory);
				IFileInfo[] tocFiles =
				[
					fs.FileInfo.New(Path.Combine(tocDirectory, "toc.yml")),
					fs.FileInfo.New(Path.Combine(tocDirectory, "_toc.yml")),
					fs.FileInfo.New(Path.Combine(tocDirectory, "docset.yml")),
					fs.FileInfo.New(Path.Combine(tocDirectory, "_docset.yml"))
				];
				var file = tocFiles.FirstOrDefault(f => f.Exists);
				if (file is null)
				{
					assembleContext.Collector.EmitWarning(assembleContext.ConfigurationPath.FullName, $"Unable to find toc file in {tocDirectory}");
					file = tocFiles.First();
				}

				var toc = new TableOfContentsConfiguration(config, file, fs.DirectoryInfo.New(tocDirectory), set.BuildContext, 0, relative);
				var mapping = new TocConfigurationMapping
				{
					TopLevel = kv.Value,
					RepositoryConfigurationFile = config,
					TableOfContentsConfiguration = toc
				};
				return new KeyValuePair<Uri, TocConfigurationMapping>(kv.Value.Source, mapping);
			})
			.ToFrozenDictionary();
	}