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 = "**************************************";

        static void Main(string[] args)
        {
            /* 
            Please follow below steps to create your own HTML Template and get "templateId". 
                1. Add new html template in app.pdf.co/templates/html
                2. Copy paste your html template code into this new template. Sample HTML templates can be found at "https://github.com/bytescout/pdf-co-api-samples/tree/master/PDF%20from%20HTML%20template/TEMPLATES-SAMPLES"
                3. Save this new template
                4. Copy it’s ID to clipboard
                5. Now set ID of the template into “templateId” parameter
            */

            // Template HTML
            string template = File.ReadAllText(@".\..\..\..\..\TEMPLATES-SAMPLES/Array Iteration/template.html");

            // Data to fill the template
            string templateData = File.ReadAllText(@".\task_data.json");

            // Destination PDF file name
            string destinationFile = @".\result.pdf";

            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);
            
            // Set JSON content type
            webClient.Headers.Add("Content-Type", "application/json");

            try
            {
                // Prepare request to `HTML To PDF` API endpoint
                Dictionary<string, object> parameters = new Dictionary<string, object>();

                // Input HTML code to be converted. Required. 
                parameters.Add("html", template);

                // Name of resulting file
                parameters.Add("templateData", templateData);

                // If large input document, process in async mode by passing true
                parameters.Add("async", false);


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


                // Prepare URL for `HTML to PDF` API call
                string url = "https://api.pdf.co/v1/pdf/convert/from/html";

                // 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)
                {
                    // Get URL of generated PDF file
                    string resultFileUrl = json["url"].ToString();

                    webClient.Headers.Remove("Content-Type"); // remove the header required for only the previous request

                    // Download the 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 to exit...");
            Console.ReadKey();
        }
    }
}

{
  "inputArr": [
    {
      "Name": "Task 1",
      "Description": "Task 1 Description",
      "Status": "Pending"
    },
    {
      "Name": "Task 2",
      "Description": "Task 2 Description",
      "Status": "Approved"
    },
    {
      "Name": "Task 3",
      "Description": "Task 3 Description",
      "Status": "Completed"
    },
    {
      "Name": "Task 4",
      "Description": "Task 4 Description",
      "Status": "Closed"
    },
    {
      "Name": "Task 5",
      "Description": "Task 5 Description",
      "Status": "Closed"
    },
    {
      "Name": "Task 6",
      "Description": "Task 6 Description",
      "Status": "Completed"
    },
    {
      "Name": "Task 7",
      "Description": "Task 7 Description",
      "Status": "Open"
    },
    {
      "Name": "Task 8",
      "Description": "Task 8 Description",
      "Status": "Completed"
    },
    {
      "Name": "Task 9",
      "Description": "Task 9 Description",
      "Status": "Pending"
    },
    {
      "Name": "Task 10",
      "Description": "Task 10 Description",
      "Status": "Open"
    }
  ]
}