Unraveling the URL Enigma with Power Automate’s C# Plugin

using System.Net;
using System.Net.Http;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Newtonsoft.Json.Linq;

public class Script : ScriptBase
{
   public override async Task<HttpResponseMessage> ExecuteAsync()
{
    // Check if the operation ID matches what is specified in the OpenAPI definition of the connector
    if (this.Context.OperationId == "URLextract")
    {
        // Corrected method name
        return await this.HandleURLextractOperation().ConfigureAwait(false);
    }

    // Handle an invalid operation ID
    HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.BadRequest);
    response.Content = CreateJsonContent($"Unknown operation ID '{this.Context.OperationId}'");
    return response;
}

  private async Task<HttpResponseMessage> HandleURLextractOperation()
    {
        HttpResponseMessage response;

    // The structure of the message body of the incoming request looks like this:
    // {
    //   "urltext": "<some text>"
    // }
        var contentAsString = await this.Context.Request.Content.ReadAsStringAsync().ConfigureAwait(false);
        var contentAsJson = JObject.Parse(contentAsString);

        // Extract the input text from the request content
    var inputText = (string)contentAsJson["urltext"];

    // Call the ExtractUrls method to get the list of URLs
        var urls = await ExtractUrls(inputText);

        // Create a JSON object to hold the response content
        JObject output = new JObject
        {
            ["urls"] = JArray.FromObject(urls)
        };

        response = new HttpResponseMessage(HttpStatusCode.OK);
        response.Content = CreateJsonContent(output.ToString());
        return response;
    }

// The ExtractUrls method provided by the user
    public async Task<List<string>> ExtractUrls(string inputText)
    {
        // Define a regular expression to match URLs
        var urlRegex = new Regex(@"\b(?:https?://|www\.)\S+\b", RegexOptions.Compiled | RegexOptions.IgnoreCase);

        // Find matches in the input text
        var matches = urlRegex.Matches(inputText);

        // Create a list to hold the URLs
        var urls = new List<string>();

        foreach (Match match in matches)
        {
            // Add each URL to the list
            urls.Add(match.Value);
        }

        // Return the list of URLs
        return urls;
    }
    // Helper method to create JSON content
    private StringContent CreateJsonContent(string jsonString)
    {
        return new StringContent(jsonString, System.Text.Encoding.UTF8, "application/json");
    }
}