using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Net;

namespace ByteScoutWebApiExample
{
    class Program
    {
        // The authentication key (API Key).
        // Get your own by registering at https://app.pdf.co
        const String API_KEY = "***********************************";

        // Direct URL of PDF file to get information
        // You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
        const string SourceFileURL = "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/encryption/sample_encrypted_aes128.pdf";

        // Refer to documentations for more info. https://apidocs.pdf.co/32-1-user-controlled-data-encryption-and-decryption
        const string Profiles = "{ 'DataDecryptionAlgorithm': 'AES128', 'DataDecryptionKey': 'HelloThisKey1234', 'DataDecryptionIV': 'TreloThisKey1234' }";


        static void Main(string[] args)
        {
            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);

            // URL for `PDF Info` API call
            string url = "https://api.pdf.co/v1/pdf/info";

            // Prepare requests params as JSON
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            parameters.Add("url", SourceFileURL);
            parameters.Add("profiles", Profiles);

            // Convert dictionary of params to JSON
            string jsonPayload = JsonConvert.SerializeObject(parameters);

            try
            {
                // Execute POST request with JSON payload
                string response = webClient.UploadString(url, jsonPayload);

                // Parse JSON response
                JObject json = JObject.Parse(response);

                if (json["error"].ToObject<bool>() == false)
                {
                    // Display PDF document information
                    foreach (JToken token in json["info"])
                    {
                        JProperty property = (JProperty) token;
                        Console.WriteLine("{0}: {1}", property.Name, property.Value);
                    }
                }
                else
                {
                    Console.WriteLine(json["message"].ToString());
                }
            }
            catch (WebException e)
            {
                Console.WriteLine(e.ToString());
            }

            webClient.Dispose();

            Console.WriteLine();
            Console.WriteLine("Press any key...");
            Console.ReadKey();
        }
    }
}