async Task CreateIndexIfDoesntExist()

in src/WebJobs.Extensions.OpenAI.AzureAISearch/AzureAISearchProvider.cs [188:243]
54 lines of code
3 McCabe index (conditional complexity)

    async Task CreateIndexIfDoesntExist(SearchIndexClient searchIndexClient, string searchIndexName, CancellationToken cancellationToken = default)
    {
        AsyncPageable<string> indexNames = searchIndexClient.GetIndexNamesAsync();
        await foreach (Page<string> page in indexNames.AsPages())
        {
            if (page.Values.Any(indexName => string.Equals(indexName, searchIndexName, StringComparison.OrdinalIgnoreCase)))
            {
                this.logger.LogDebug("Search index - {searchIndexName} already exists", searchIndexName);
                return;
            }
        }

        SearchIndex index = new(searchIndexName)
        {
            VectorSearch = new()
            {
                Algorithms =
                {
                    new HnswAlgorithmConfiguration(vectorSearchConfigName)
                },
                Profiles =
                {
                    new VectorSearchProfile(vectorSearchProfile, vectorSearchConfigName)
                }
            },
            Fields =
            {
                new SimpleField("id", SearchFieldDataType.String) { IsKey = true },
                new SearchableField("text") { AnalyzerName = LexicalAnalyzerName.EnMicrosoft },
                new SimpleField("title", SearchFieldDataType.String) { IsFacetable = true },
                new SearchField("embeddings", SearchFieldDataType.Collection(SearchFieldDataType.Single))
                {
                    VectorSearchDimensions = this.vectorSearchDimensions,
                    IsSearchable = true,
                    VectorSearchProfileName = vectorSearchProfile,
                },
                new SimpleField("timestamp", SearchFieldDataType.DateTimeOffset) { IsFacetable = true }
            },
            SemanticSearch = new()
            {
                Configurations =
                {
                    new SemanticConfiguration("default", new()
                    {
                        ContentFields =
                        {
                            new SemanticField("text")
                        },
                        TitleField = new SemanticField("title")
                    })
                }
            }
        };

        await searchIndexClient.CreateIndexAsync(index, cancellationToken);
    }