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

namespace ByteScoutWebApiExample
{
	class Program
	{
		// The authentication key (API Key).
		// Get your own by registering at https://app.pdf.co
		const String API_KEY = "***********************************";
		
		// URL of web page to convert to PDF document.
		const string SourceUrl = "http://en.wikipedia.org/wiki/Main_Page";
		// Destination PDF file name
		const string DestinationFile = @".\result.pdf";

		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 `Web Page to PDF` API call
			string url = "https://api.pdf.co/v1/pdf/convert/from/url";

			// Prepare requests params as JSON
			Dictionary<string, object> requestBody = new Dictionary<string, object>();
			requestBody.Add("name", Path.GetFileName(DestinationFile));
			requestBody.Add("url", SourceUrl);

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

			try
			{
				// Execute POST request
				var response = webClient.UploadString(url, "POST", jsonPayload);

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

				if (json["error"].ToObject<bool>() == false)
				{
					// Get URL of generated PDF file
					string resultFileUrl = json["url"].ToString();

					// Download PDF file
					webClient.DownloadFile(resultFileUrl, DestinationFile);

					Console.WriteLine("Generated PDF document saved as \"{0}\" file.", DestinationFile);
				}
				else
				{
					Console.WriteLine(json["message"].ToString());
				}
			}
			catch (WebException e)
			{
				Console.WriteLine(e.ToString());
			}

			webClient.Dispose();


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