using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Web.Mvc;
using EnVisage.App_Start;
using EnVisage.Code;
using EnVisage.Code.BLL;
using EnVisage.Models;
using jQuery.DataTables.Mvc;

namespace EnVisage.Controllers
{
    [Authorize]
    public class NonProjectTimeCategoryController : BaseController
    {
        /// <summary>
        /// GET: /Types/
        /// </summary>
        /// <returns>Empty view</returns>
        [HttpGet]
        [AreaSecurityAttribute(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Read)]
        public ActionResult Index()
        {
			//TODO: There is AreaSecurityAttribute applied for current action. We do not need to check any more
			if (!SecurityManager.CheckSecurityObjectPermission(Areas.RD_ResourceNPTAllocationCategory, AccessLevel.Read))
                return Redirect("/");

            return View();
        }

        /// <summary>
        /// Returns JSON Types list with filters and sort for jQuery DataTables
        /// </summary>
        [HttpPost]
        [AreaSecurityAttribute(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Read)]
        public JsonResult Index(JQueryDataTablesModel jQueryDataTablesModel)
        {
            int totalRecordCount;
            int searchRecordCount;

            var types = GetNPCategories(startIndex: jQueryDataTablesModel.iDisplayStart,
                pageSize: jQueryDataTablesModel.iDisplayLength, sortedColumns: jQueryDataTablesModel.GetSortedColumns(),
                totalRecordCount: out totalRecordCount, searchRecordCount: out searchRecordCount, searchString: jQueryDataTablesModel.sSearch);

            return this.DataTablesJson(items: types,
                totalRecords: totalRecordCount,
                totalDisplayRecords: searchRecordCount,
                sEcho: jQueryDataTablesModel.sEcho);
        }

        private IEnumerable<NonProjectTimeCategoryModel> GetNPCategories(int startIndex,
            int pageSize,
            IEnumerable<SortedColumn> sortedColumns,
            out int totalRecordCount,
            out int searchRecordCount,
            string searchString)
        {
            var query = from c in DbContext.NonProjectTimeCategories.AsNoTracking()
                        select new NonProjectTimeCategoryModel()
                        {
                            Id = c.Id,
                            Name = c.Name,
                            Scheduled = c.NonProjectTimes.Count
                        };

            //filter
            if (!string.IsNullOrWhiteSpace(searchString))
            {
                query = query.Where(c => c.Name.ToLower().Contains(searchString.ToLower()));
            }

            //sort
            foreach (var sortedColumn in sortedColumns)
            {
                switch (sortedColumn.PropertyName)
                {
                    case "Name":
                        query = sortedColumn.Direction == SortingDirection.Ascending ? query.OrderBy(c => c.Name) : query.OrderByDescending(c => c.Name);
                        break;

                    case "Scheduled":
                        query = sortedColumn.Direction == SortingDirection.Ascending ? query.OrderBy(c => c.Scheduled) : query.OrderByDescending(c => c.Scheduled);
                        break;
                }
            }

            totalRecordCount = DbContext.NonProjectTimeCategories.Count();
            searchRecordCount = query.Count();
            return query.Skip(startIndex).Take(pageSize).ToList();
        }

        // GET: /Type/Edit/5
        [HttpGet]
        [AreaSecurity(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Write)]
        public ActionResult Edit(Guid? id)
        {
            try
            {
	            if (id.HasValue)
                {
                    var category = (new NonProjectTimeCategoryManager(DbContext)).Load(id);
                    if (category == null)
                        return new HttpStatusCodeResult(HttpStatusCode.NotFound);

                    var model = new NonProjectTimeCategoryEditModel()
                    {
                        Id = category.Id,
                        Name = category.Name
                    };

                    return PartialView("_editNonProjectTimeCategory", model);
                }
	            return PartialView("_editNonProjectTimeCategory", (new NonProjectTimeCategoryEditModel()));
            }
            catch (BLLException blEx)
            {
                if (blEx.DisplayError)
                    SetErrorScript(message: blEx.Message);
                else
                {
                    LogException(blEx);
                    SetErrorScript();
                }
            }
            catch (Exception exception)
            {
                LogException(exception);
                SetErrorScript();
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }

        // POST: /Type/Edit/5
        // Implementing Basic CRUD Functionality with the Entity Framework in ASP.NET MVC Application http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        [AreaSecurity(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Write)]
        public ActionResult Edit(NonProjectTimeCategoryEditModel model)
        {
            if (model.Id != Guid.Empty && ContentLocker.IsLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName()))
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);

            model.TrimStringProperties();

            if (ModelState.IsValid)
            {
                try
                {
                    (new NonProjectTimeCategoryManager(null)).Save(model);

                    ContentLocker.RemoveLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName());

                    return new HttpStatusCodeResult(HttpStatusCode.OK);
                }
                catch (BLLException blEx) // handle any system specific error
                {
                    // display error message if required
                    if (blEx.DisplayError)
                        ModelState.AddModelError(string.Empty, blEx.Message);
                    else // if display not requried then display modal form with general error message 
                    {
                        LogException(blEx);
                        SetErrorScript();
                    }
                }
                catch (Exception exception) // handle any unexpected error
                {
                    LogException(exception);
                    SetErrorScript();
                }
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }

        // GET: /Type/Reallocate/5
        [HttpGet]
        [AreaSecurity(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Write)]
        public ActionResult Reallocate(Guid? id)
        {
            try
            {
	            if (id.HasValue)
                {
                    var category = new NonProjectTimeCategoryManager(DbContext).Load(id);
                    if (category == null)
                        return new HttpStatusCodeResult(HttpStatusCode.NotFound);

                    var model = new NonProjectTimeCategoryReallocateModel()
                    {
                        Id = category.Id,
                        Name = category.Name,
                        CategoryId = Guid.Empty
                    };

                    return PartialView("_reallocateNonProjectTimeCategory", model);
                }
	            return PartialView("_reallocateNonProjectTimeCategory", (new NonProjectTimeCategoryEditModel()));
            }
            catch (BLLException blEx)
            {
                if (blEx.DisplayError)
                    SetErrorScript(message: blEx.Message);
                else
                {
                    LogException(blEx);
                    SetErrorScript();
                }
            }
            catch (Exception exception)
            {
                LogException(exception);
                SetErrorScript();
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }

        // POST: /Type/Reallocate/5
        // Implementing Basic CRUD Functionality with the Entity Framework in ASP.NET MVC Application http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
		[AreaSecurity(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Write)]
		public ActionResult Reallocate(NonProjectTimeCategoryReallocateModel model)
        {
            if (model.Id != Guid.Empty && ContentLocker.IsLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName()))
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);

            model.TrimStringProperties();

            if (ModelState.IsValid)
            {
                try
                {
                    (new NonProjectTimeCategoryManager(null)).Reallocate(model);

                    ContentLocker.RemoveLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName());

                    return new HttpStatusCodeResult(HttpStatusCode.OK);
                }
                catch (BLLException blEx) // handle any system specific error
                {
                    // display error message if required
                    if (blEx.DisplayError)
                        ModelState.AddModelError(string.Empty, blEx.Message);
                    else // if display not requried then display modal form with general error message 
                    {
                        LogException(blEx);
                        SetErrorScript();
                    }
                }
                catch (Exception exception) // handle any unexpected error
                {
                    LogException(exception);
                    SetErrorScript();
                }
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }

        // POST: /Type/Delete/5
        [HttpPost]
        [AreaSecurity(area = Areas.RD_ResourceNPTAllocationCategory, level = AccessLevel.Write)]
        public ActionResult Delete(NonProjectTimeCategoryModel model)
        {
            if (model == null || ContentLocker.IsLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName()))
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);

            try
            {
                var result = DbContext.NonProjectTimeCategories
                                      .Where(x => x.Id == model.Id)
                                      .Select(x => new
                                      {
                                          category = x,
                                          scheduled = x.NonProjectTimes.Count
                                      }).FirstOrDefault();
                if (result == null || result.category == null)
                    return new HttpStatusCodeResult(HttpStatusCode.NotFound);

                // deleting is not allowed
                if (result.scheduled > 0)
                    return new HttpStatusCodeResult(HttpStatusCode.BadRequest);

                (new NonProjectTimeCategoryManager(DbContext)).Delete(result.category);

                ContentLocker.RemoveLock("NonProjectTimeCategories", model.Id.ToString(), User.Identity.GetUserName());

                return new HttpStatusCodeResult(HttpStatusCode.OK);
            }
            catch (BLLException blEx) // handle any system specific error
            {
                // display error message if required
                if (blEx.DisplayError)
                    ModelState.AddModelError(string.Empty, blEx.Message);
                else // if display not requried then display modal form with general error message 
                {
                    LogException(blEx);
                    SetErrorScript();
                }
            }
            catch (Exception exception) // handle any unexpected error
            {
                LogException(exception);
                SetErrorScript();
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }

        [HttpPost]
        [ValidateJsonAntiForgeryToken]
        public ActionResult GetCategories()
        {
            try
            {
                var categories = DbContext.NonProjectTimeCategories.Select(x => new { id = x.Id, name = x.Name })
                                          .ToDictionary(x => x.id.ToString(), g => g.name);

                return Json(categories);
            }
            catch (Exception exception) // handle any unexpected error
            {
                LogException(exception);
            }

            return new HttpStatusCodeResult(HttpStatusCode.InternalServerError);
        }
    }
}