using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Helpers;
using System.Web.Mvc;
using ASMS_BUSINESS_DOMAIN;
using ASMS_BUSINESS_DOMAIN.Extensions;
using ASMS_BUSINESS_DOMAIN.Global;
using ASMS_BUSINESS_DOMAIN.Repository;
using ASMS_MVC.GraphicConfig;
using ASMS_MVC.Models;
using ASMS_MVC.Global;
using ASMS_MVC.Helpers;

namespace ASMS_MVC.Controllers
{
    [Authorize(Roles = Constants.ROLE_ADMIN)]
    public class CBDPhotoController : BaseController
    {
        private IRepository<CBD_PHOTO> _cbdPhotoRepo;

        public CBDPhotoController(IRepository<CBD_PHOTO> cbdPhotoRepo)
        {
            _cbdPhotoRepo = cbdPhotoRepo;
        }
        
        //
        // GET: /CBDPhoto/
        public ViewResult Index(int cbdid)
        {
            List<CBD_PHOTO> cbd_photos = _cbdPhotoRepo.Where(x => x.PARENT_ID == cbdid).ToList();
            cbd_photos.Sort(new CBD_PHOTO_COMPARER());
            
            ViewBag.cbdid = cbdid;
            ViewBag.ELEM_TXT_PHOTO_TITLE = Constants.ELEM_TXT_PHOTO_TITLE;
            ViewBag.MAX_THUMBNAIL_WIDTH = Constants.MAX_THUMBNAIL_WIDTH;
            return View(Constants.PARTIALVIEW_INDEX, cbd_photos);
        }

        /// <summary>
        /// Returns an Image using the raw THUMBNAIL data from the DB
        /// </summary>
        public FileContentResult GetThumbnail(int cbdPhotoId)
        {
            return new FileContentResult(Utils.GetThumbnail(cbdPhotoId, _cbdPhotoRepo), "image/jpeg");
        }

        /// <summary>
        /// Returns an Image file of Medium quality for display in the 'Edit Photo' view of the CBD Site Admin screens
        /// </summary>
        public FileContentResult GetEditImage(int cbdPhotoId)
        {
            byte[] result = Utils.GetImageResult(cbdPhotoId, Constants.MAX_EDIT_IMAGE_WIDTH, ImageQuality.Medium, ImageFormat.Jpeg, _cbdPhotoRepo);

            return new FileContentResult(result, "image/jpeg");
        }

        /// <summary>
        /// Creates a High Quality Image from the raw data in the DB
        /// </summary>
        public FileContentResult GetFullResImage(int cbdPhotoId)
        {
            byte[] result = Utils.GetImageResult(cbdPhotoId, null, ImageQuality.High, ImageFormat.Jpeg, _cbdPhotoRepo);

            return new FileContentResult(result, "image/jpeg");
        }

        public ViewResult View(int cbdPhotoId)
        {
            CBD_PHOTO cbd_photo = _cbdPhotoRepo.Single(c => c.PHOTO_ID == cbdPhotoId);
            return View(Constants.PARTIALVIEW_VIEW, cbd_photo);
        }

        //
        // GET: /CBDPhoto/Edit/5 
        public ActionResult Edit(int cbdPhotoId)
        {
            CBD_PHOTO cbd_photo = _cbdPhotoRepo.Single(c => c.PHOTO_ID == cbdPhotoId);
            ViewBag.CBD_SITE_ID = cbd_photo.PARENT_ID;
            return View(Constants.PARTIALVIEW_EDIT, cbd_photo);
        }

        //
        // POST: /CBDPhoto/Edit/5

        [HttpPost]
        public ActionResult Edit(CBD_PHOTO cbd_photo)
        {
            if (ModelState.IsValid)
            {
                // NOTE: We don't get the image data serialized because the client doesn't have the full resolution cbdPhoto.
                // EF complains if we try and update the cbdPhoto without included the cbdPhoto data, since it is a non-nullable field.
                // This problem is solved by using the Table Split method of table mapping: splitting the PHOTO_DATA into it's own entity

                _cbdPhotoRepo.Add(cbd_photo);
                _cbdPhotoRepo.Context.ObjectStateManager.ChangeObjectState(cbd_photo, EntityState.Modified);
                _cbdPhotoRepo.SaveChanges();

                // Return the full cbdPhoto entity, serialized into a JSON object so we can update the View
                return Json(new { CBD_PHOTO_ID = cbd_photo.PHOTO_ID, cbd_photo.TITLE });
            }
            ViewBag.CBD_SITE_ID = cbd_photo.PARENT_ID;
            return View(Constants.PARTIALVIEW_EDIT, cbd_photo);
        }

        //
        // GET: /CBDPhoto/Delete/5
        public ActionResult Delete(int cbdPhotoId)
        {
            // Eager load the photo data
            CBD_PHOTO cbd_photo = _cbdPhotoRepo.Where(c => c.PHOTO_ID == cbdPhotoId).Include(p => p.PHOTO_DATA).Include(p => p.THUMBNAIL_DATA).Single();
            
            if (cbd_photo == null)
            {
                //Return record not found error
                return View(Constants.PARTIALVIEW_DELETE, cbd_photo);
            }
            else
            {
                _cbdPhotoRepo.Delete(cbd_photo);
                _cbdPhotoRepo.SaveChanges();

                // Serialize an annoymous type containing the id of photo we just deleted so the client script knows which div wrapper to remove
                return Json(new { CBD_PHOTO_ID = cbd_photo.PHOTO_ID }, JsonRequestBehavior.AllowGet);
            }
        }
        
        protected override void Dispose(bool disposing)
        {
            _cbdPhotoRepo.Dispose();
            base.Dispose(disposing);
        }
    }
}