using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Logging;
using TTSW.Controllers;
using TTSW.EF;
using TTSW.Utils;
using TTSW.Constant;
using TTSW.Common;
using TodoAPI2.Models;
using System.Data;
using Microsoft.Extensions.Configuration;
using System.IO;
using System.Net;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace TodoAPI2.Controllers
{
    //[Authorize]
    [Produces("application/json")]
    [Route("api/rep_kp7")]
    public class rep_kp7Controller : BaseController
    {
        #region Private Variables
        private ILogger<rep_kp7Controller> _logger;
        private Irep_kp7Service _repository;
		private IConfiguration Configuration { get; set; }
        #endregion

        #region Properties

        #endregion

        /// <summary>
        /// Default constructure for dependency injection
        /// </summary>
        /// <param name="repository"></param>
		/// <param name="configuration"></param>
        /// <param name="logger"></param>
        public rep_kp7Controller(ILogger<rep_kp7Controller> logger, Irep_kp7Service repository, IConfiguration configuration)
        {
            _logger = logger;
            _repository = repository;
			Configuration = configuration;
        }

		/// <summary>
        /// Get Blank Item
        /// </summary>
        /// <remarks>
        /// </remarks>
        /// <returns>Return a blank item</returns>
        /// <response code="200">Returns the item</response>
        /// <response code="500">Error Occurred</response>  
        [HttpGet("GetBlankItem")]
        [ProducesResponseType(typeof(rep_kp7WithSelectionViewModel), 200)]
        [ProducesResponseType(400)]
        [ProducesResponseType(500)]
        //[ValidateAntiForgeryToken]
        public IActionResult GetBlankItem()
        {
            try
            {
				if (!MyHelper.checkAuth(Configuration, HttpContext)) return Unauthorized();
                var result = _repository.GetBlankItem();

                return Ok(result);
            }
            catch (Exception ex)
            {
                _logger.LogCritical($"Exception in IActionResult GetBlankItem.", ex);
                return StatusCode(500, $"{ex.Message}");
            }
        }

		/// <summary>
        /// Download Report
        /// </summary>
        /// <remarks>
        /// </remarks>
        /// <returns>Return list of items by specifced keyword</returns>
        /// <response code="200">Returns the item</response>
        /// <response code="500">Error Occurred</response>  
        [HttpGet("rep_kp7_report")]
        [ProducesResponseType(typeof(FileStreamResult), 200)]
        [ProducesResponseType(400)]
        [ProducesResponseType(500)]
        //[ValidateAntiForgeryToken]
        public IActionResult rep_kp7_report(rep_kp7ReportRequestModel model)
        {
            try
            {
				if (!MyHelper.checkAuth(Configuration, HttpContext)) return Unauthorized();
                var httpclient = new WebClient();
                
                var stream = new MemoryStream();

                Document document = new Document();
                PdfCopy writer = new PdfCopy(document, stream);
                document.Open();

                // Get Main KP7 report from HR
                try
                {
                    var data = GetKP7MainReport(model.employee_id);
                    PdfReader reader = new PdfReader(data);
                    reader.ConsolidateNamedDestinations();
                    for (int i = 1; i <= reader.NumberOfPages; i++)
                    {
                        PdfImportedPage page = writer.GetImportedPage(reader, i);
                        writer.AddPage(page);
                    }
                    reader.Close();
                }
                catch (Exception ex)
                {

                }

                // Get Jasper Section report
                string mainurl = MyHelper.GetConfig(Configuration, "JasperReportServer:MainURL");
                string reportsite = MyHelper.GetConfig(Configuration, "JasperReportServer:reportsite");
                string username = MyHelper.GetConfig(Configuration, "JasperReportServer:username");
                string password = MyHelper.GetConfig(Configuration, "JasperReportServer:password");
                string url = $"{mainurl}{reportsite}/rep_kp7.{model.filetype}?{MyHelper.GetParameterForJasperReport(model)}&j_username={username}&j_password={password}";
                var data2 = httpclient.DownloadData(url);
                PdfReader reader2 = new PdfReader(data2);
                reader2.ConsolidateNamedDestinations();
                for (int i = 1; i <= reader2.NumberOfPages; i++)
                {
                    PdfImportedPage page = writer.GetImportedPage(reader2, i);
                    writer.AddPage(page);
                }
                reader2.Close();

                writer.Close();
                document.Close();

                var data3 = stream.ToArray();
                var stream3 = new MemoryStream(data3);

                return File(stream3, model.contentType);
            }
            catch (Exception ex)
            {
                _logger.LogCritical($"Exception while GetReport.", ex);
                return StatusCode(500, $"{ex.Message}");
            }
        }

        private byte[] GetKP7MainReport(int? employee_id)
        {
            string kp7_main_api = MyHelper.GetConfig(Configuration, "SiteInformation:hr_svc") + "/hrm/employeeReportKP/" + employee_id.ToString();
            var httpclient = new WebClient();
            return httpclient.DownloadData(kp7_main_api);
        }
    }
}