Functions.Templates/Templates/HttpTriggerWithOpenAPI-CSharp/HttpTriggerWithOpenAPICSharp.cs

using System.IO;
using System.Net;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Attributes;
#if (AuthEnabled)
using Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Enums;
#endif
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using Newtonsoft.Json;

namespace Company.Function
{
    public class HttpTriggerWithOpenAPICSharp
    {
        private readonly ILogger<HttpTriggerWithOpenAPICSharp> _logger;

        public HttpTriggerWithOpenAPICSharp(ILogger<HttpTriggerWithOpenAPICSharp> log)
        {
            _logger = log;
        }

        [FunctionName("HttpTriggerWithOpenAPICSharp")]
        [OpenApiOperation(operationId: "Run", tags: new[] { "name" })]
#if (AuthEnabled)
        [OpenApiSecurity("function_key", SecuritySchemeType.ApiKey, Name = "code", In = OpenApiSecurityLocationType.Query)]
#endif
        [OpenApiParameter(name: "name", In = ParameterLocation.Query, Required = true, Type = typeof(string), Description = "The **Name** parameter")]
        [OpenApiResponseWithBody(statusCode: HttpStatusCode.OK, contentType: "text/plain", bodyType: typeof(string), Description = "The OK response")]
        public async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.AuthLevelValue, "get", "post", Route = null)] HttpRequest req)
        {
            _logger.LogInformation("C# HTTP trigger function processed a request.");

            string name = req.Query["name"];

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);
            name = name ?? data?.name;

            string responseMessage = string.IsNullOrEmpty(name)
                ? "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response."
                : $"Hello, {name}. This HTTP triggered function executed successfully.";

            return new OkObjectResult(responseMessage);
        }
    }
}