public async Task HandleAsync()

in functions/http/ParseContentType/Function.cs [31:89]
51 lines of code
9 McCabe index (conditional complexity)

    public async Task HandleAsync(HttpContext context)
    {
        HttpRequest request = context.Request;
        HttpResponse response = context.Response;

        string name = null;
        ContentType contentType = new ContentType(request.ContentType);

        switch (contentType.MediaType)
        {
            case "application/json":
            {
                // '{"name":"John"}'
                using TextReader reader = new StreamReader(request.Body);
                string json = await reader.ReadToEndAsync();
                JsonElement body = JsonSerializer.Deserialize<JsonElement>(json);
                if (body.TryGetProperty("name", out JsonElement property) && property.ValueKind == JsonValueKind.String)
                {
                    name = property.GetString();
                }
                break;
            }
            case "application/octet-stream":
            {
                // 'John', encoded to bytes using UTF-8, then encoded as base64
                using TextReader reader = new StreamReader(request.Body);
                string base64 = await reader.ReadToEndAsync();
                byte[] data = Convert.FromBase64String(base64);
                name = Encoding.UTF8.GetString(data);
                break;
            }
            case "text/plain":
            {
                // 'John'
                using TextReader reader = new StreamReader(request.Body);
                name = await reader.ReadLineAsync();
                break;
            }
            case "application/x-www-form-urlencoded":
            {
                // 'name=John' in the body of a POST request (not the URL)
                if (request.Form.TryGetValue("name", out StringValues value))
                {
                    name = value;
                }
                break;
            }
        }
        if (name is object)
        {
            await response.WriteAsync($"Hello {name}!", context.RequestAborted);
        }
        else
        {
            // Unrecognized content type, or the name wasn't in the content
            // (e.g. JSON without a "name" property)
            response.StatusCode = (int) HttpStatusCode.BadRequest;
        }
    }