using System.Globalization;
using EnVisage.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Microsoft.AspNet.Identity;
using EnVisage.Code;
using EnVisage.Code.Cache;
using EnVisage.Models.Cache;
using System.Text;

namespace EnVisage.Code.HtmlHelpers
{
    public static class HtmlHelpers
    {
		public const int C_ITEM_LEVEL_INDENT_PIXELS = 16;

        public struct RoleAccess {
            public Guid RoleId;
            public Areas SecurityObject;
            public Guid ProjectId;
            public int Read;
            public int Write;
        }

        //public static MvcHtmlString GetAreaItemsList(this HtmlHelper html, UrlHelper url, AspNetUser principal)
        public static MvcHtmlString GetAreaItemsList(this HtmlHelper html, UrlHelper url, UserModel principal)
        {
            const string attrChecked = "checked";
			const string attrInherited = "inherited";

            var context = new EnVisageEntities();
            var roleIds = principal.AspNetRoles.Select(t => new Guid (t.Id)).ToArray();
            var rolePermissions = (from pr in context.Securities
                            where roleIds.Contains(pr.PrincipalId)
                            select pr).ToArray().Select(area => new RoleAccess
                {
                    RoleId = area.PrincipalId,
                    SecurityObject = (Areas) Enum.Parse(typeof (Areas), area.SecurityObject),
                    Read = area.Read,
                    Write = area.Write
                }).ToList();

            var userPermissions = new List<Security>();

            if (principal.Id != Guid.Empty)
                userPermissions = (from pr in context.Securities where pr.PrincipalId == principal.Id select pr).ToList();

			var menuItems = Enum.GetValues(typeof(Areas)).Cast<Areas>().ToList();

			//temporary remove Scheduling Board and Portfolio from permission list
			menuItems.Remove(Areas.ScheduleBoard);
			menuItems.Remove(Areas.Portfolio);
            if (!context.MenuNavigations.Any(x => x.Value == (int) Areas.CustomReports))
                menuItems.Remove(Areas.CustomReports);
			var menulist = new TagBuilder("div");
			menulist.InnerHtml = @"<tr style=""border-top:0;"">
                        <td style=""font-weight:600;border-top-width:0"">Areas</td>
                        <td style=""border-top-width:0;text-align: center;"">&nbsp;R&nbsp;&nbsp;&nbsp;&nbsp;W</td>
                    </tr>";

            foreach (var menuItem in menuItems)
            {
                var tr = new TagBuilder("tr");
                var td = new TagBuilder("td");
				var td1 = new TagBuilder("td");

				var permissionLabeDiv = new TagBuilder("div");
				permissionLabeDiv.AddCssClass("permission-area-label");

				var cbr = new TagBuilder("input");
                cbr.Attributes["value"] = menuItem.ToString();
                cbr.Attributes["type"] = "checkbox";
                cbr.Attributes["name"] = "areasread";
                cbr.AddCssClass("custominput");

				var cbw = new TagBuilder("input");
                cbw.Attributes["value"] = menuItem.ToString();
                cbw.Attributes["type"] = "checkbox";
                cbw.Attributes["name"] = "areaswrite";
                cbw.AddCssClass("custominput");

                var isExplicitReadFound = false;
                var isExplicitWriteFound = false;

                foreach (var pa in userPermissions)
                {
                    if (!menuItem.ToString().Equals(pa.SecurityObject))
                        continue;
                    if (pa.Read == (int)Permission.Allow)
                        cbr.Attributes["checked"] = attrChecked;
                    if (pa.Write == (int)Permission.Allow)
                        cbw.Attributes["checked"] = attrChecked;

                    isExplicitReadFound = pa.Read != (int)Permission.Inherited;
                    isExplicitWriteFound = pa.Write != (int)Permission.Inherited;
                    break;
                }
                
                var isRolePermissionFound = rolePermissions.Any(t => t.SecurityObject == menuItem);
                var isRead = rolePermissions.Any(t => t.SecurityObject == menuItem && (t.Read == (int)Permission.Allow));
                var isWrite = rolePermissions.Any(t => t.SecurityObject == menuItem && (t.Write == (int)Permission.Allow));
                if (isRolePermissionFound)
                {
                    cbr.Attributes["role"] = ((int)(isRead ? Permission.Allow : Permission.Deny)).ToString(CultureInfo.InvariantCulture);
                    cbw.Attributes["role"] = ((int)(isWrite ? Permission.Allow : Permission.Deny)).ToString(CultureInfo.InvariantCulture);
                    if (!isExplicitReadFound)
                    {
						cbr.Attributes["inherited"] = attrInherited;
                        if (isRead)
                            cbr.Attributes["checked"] =  "checked";
                    }
                    if (!isExplicitWriteFound)
                    {
						cbw.Attributes["inherited"] = attrInherited;
                        if (isWrite)
                            cbw.Attributes["checked"] = "checked";
                    }
                }
                else
                {
                    cbr.Attributes["role"] = ((int)Permission.Deny).ToString(CultureInfo.InvariantCulture);
                    cbw.Attributes["role"] = ((int)Permission.Deny).ToString(CultureInfo.InvariantCulture);
                    if (!isExplicitReadFound)
                    {
						cbr.Attributes["inherited"] = attrInherited;
					}
                    if (!isExplicitWriteFound)
					{
						cbw.Attributes["inherited"] = attrInherited;
					}
                }

				string permissionTitle = menuItem.ToDisplayValue();
                permissionLabeDiv.SetInnerText(permissionTitle);
				permissionLabeDiv.Attributes.Add("title", permissionTitle);

				if (menuItem.DisplayAsBold())
					// Customize display of the group permission item
					permissionLabeDiv.AddCssClass("permission-group");

				// Set item indent int the permission Tree
				var menuItemDisplayLevel = menuItem.GetLevelInTree();
				int menuItemDisplayIndentPx = C_ITEM_LEVEL_INDENT_PIXELS * ((int)menuItemDisplayLevel - 1);

				if (menuItemDisplayIndentPx > 0)
				{
					string inlineCssStyle =
						permissionLabeDiv.Attributes.ContainsKey("style") ?
						permissionLabeDiv.Attributes["style"] :
						String.Empty;

					inlineCssStyle += String.Format(" padding-left:{0}px;", menuItemDisplayIndentPx);
					permissionLabeDiv.Attributes["style"] = inlineCssStyle.Trim();

					var parentItem = menuItem.GetParentItem();
					if (parentItem.HasValue)
					{
						cbr.Attributes.Add("data-parent-item", parentItem.Value.ToString());
						cbw.Attributes.Add("data-parent-item", parentItem.Value.ToString());
					}
				}

				td.InnerHtml = permissionLabeDiv.ToString();
				td1.InnerHtml = string.Format("<nobr>{0}{1}</nobr>", cbr, cbw);

				tr.InnerHtml = string.Format("{0}{1}", td, td1);
                menulist.InnerHtml += tr;
            }
            return new MvcHtmlString(menulist.ToString());
        }

		public static MvcHtmlString GetAreaItemsList(this HtmlHelper html, UrlHelper url, RoleModel role)
        {
            EnVisageEntities context = new EnVisageEntities();
			var selecteds = (from pr in context.Securities where pr.PrincipalId == role.Id select pr).ToList();
			var menuItems = Enum.GetValues(typeof(Areas)).Cast<Areas>().ToList();

			//temporary remove Scheduling Board and Portfolio from permission list
			menuItems.Remove(Areas.ScheduleBoard);
			menuItems.Remove(Areas.Portfolio);
            if (!context.MenuNavigations.Any(x=>x.Value == (int) Areas.CustomReports))
                menuItems.Remove(Areas.CustomReports);
			var menulist = new TagBuilder("div");
            menulist.InnerHtml = @"<tr style=""border-top:0;"">
                        <td style=""font-weight:600;border-top-width:0"">Areas</td>
                        <td style=""border-top-width:0;text-align: center;"">R&nbsp;&nbsp;&nbsp;&nbsp;W</td>
                    </tr>";

            foreach (var menuItem in menuItems)
            {
                var tr = new TagBuilder("tr");
                var td = new TagBuilder("td");
                var td1 = new TagBuilder("td");
				td1.Attributes.Add("nowrap", string.Empty);

				var permissionLabeDiv = new TagBuilder("div");
				permissionLabeDiv.AddCssClass("permission-area-label");

				var cbr = new TagBuilder("input");
                cbr.Attributes["value"] = menuItem.ToString();
                cbr.Attributes["type"] = "checkbox";
                cbr.Attributes["name"] = "areasread";
                var cbw = new TagBuilder("input");
                cbw.Attributes["value"] = menuItem.ToString();
                cbw.Attributes["type"] = "checkbox";
                cbw.Attributes["name"] = "areaswrite";

                cbr.AddCssClass("custominput");
                cbw.AddCssClass("custominput");

                foreach (var selected in selecteds)
                {
                    if (menuItem.ToString() == selected.SecurityObject && selected.Read == 1)
                        cbr.Attributes["checked"] = "checked";
                    if (menuItem.ToString() == selected.SecurityObject && selected.Write == 1)
                        cbw.Attributes["checked"] = "checked";
                }

				string permissionTitle = menuItem.ToDisplayValue();
				permissionLabeDiv.SetInnerText(permissionTitle);
				permissionLabeDiv.Attributes.Add("title", permissionTitle);

				if (menuItem.DisplayAsBold())
					// Customize display of the group permission item
					permissionLabeDiv.AddCssClass("permission-group");

				// Set item indent int the permission Tree
				var menuItemDisplayLevel = menuItem.GetLevelInTree();
				int menuItemDisplayIndentPx = C_ITEM_LEVEL_INDENT_PIXELS * ((int)menuItemDisplayLevel - 1);

				if (menuItemDisplayIndentPx > 0)
				{
					string inlineCssStyle =
						permissionLabeDiv.Attributes.ContainsKey("style") ?
						permissionLabeDiv.Attributes["style"] :
						String.Empty;

					inlineCssStyle += String.Format(" padding-left:{0}px;", menuItemDisplayIndentPx);
					permissionLabeDiv.Attributes["style"] = inlineCssStyle.Trim();

					var parentItem = menuItem.GetParentItem();
					if (parentItem.HasValue)
					{
						cbr.Attributes.Add("data-parent-item", parentItem.Value.ToString());
						cbw.Attributes.Add("data-parent-item", parentItem.Value.ToString());
					}
				}

				td.InnerHtml = permissionLabeDiv.ToString();
				td1.InnerHtml = cbr + " " + cbw;

				tr.InnerHtml = td + "" + td1;
                menulist.InnerHtml += tr;
            }

            return new MvcHtmlString(menulist.ToString());
        }

        //public static MvcHtmlString GetRolesList(this HtmlHelper html, UrlHelper url, AspNetUser Principal)
        public static MvcHtmlString GetRolesList(this HtmlHelper html, UrlHelper url, UserModel Principal)
        {
            EnVisageEntities context = new EnVisageEntities();
            var selecteds =  Principal.AspNetRoles.ToList();
            var roleItems = (from pr in context.AspNetRoles
                             orderby pr.Name
                             select pr).ToList();
            var rolelist = new TagBuilder("div");
            foreach (var roleItem in roleItems)
            {
                var cb = new TagBuilder("input");
                cb.Attributes["value"] = roleItem.Id.ToString();
                cb.Attributes["type"] = "checkbox";
                cb.Attributes["name"] = "roleitems";
                foreach (var selected in selecteds)
                {
                    if (roleItem.Id == selected.Id)
                        cb.Attributes["checked"] = "checked";
                }
                cb.InnerHtml = " " + roleItem.Name;
                rolelist.InnerHtml += cb + "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
            }

            return new MvcHtmlString(rolelist.ToString());
        }

        public static MvcHtmlString GetProjectStatusDropdown(this HtmlHelper html, UrlHelper url)
        {
            EnVisageEntities context = new EnVisageEntities();
            var statuses = (from pr in context.Status
                             orderby pr.Name
                             select pr).ToList();
            var statusDropDown = new TagBuilder("select");
            statusDropDown.Attributes["name"] = "statuses";
            statusDropDown.Attributes["class"] = "form-control";
            var opAll = new TagBuilder("option");
            opAll.Attributes["value"] = "All";
            opAll.InnerHtml = "All";
            statusDropDown.InnerHtml += opAll.ToString();
            foreach (var status in statuses)
            {
                var op = new TagBuilder("option");
                op.Attributes["value"] = status.Name;
                op.InnerHtml = status.Name;
                statusDropDown.InnerHtml += op.ToString();
            }

            return new MvcHtmlString(statusDropDown.ToString());
        }

        public static MvcHtmlString GetProjectName(this HtmlHelper html, Guid ProjectId)
        {
            EnVisageEntities context = new EnVisageEntities();
            var projName = (from pr in context.Projects
                        where pr.Id == ProjectId
                        select pr.Name).FirstOrDefault();
            if (projName == null) return new MvcHtmlString(string.Empty);
            else return new MvcHtmlString(projName.ToString());
        }


		public static IEnumerable<SelectListItem> GetProjectStatusDropdown(EnVisage.Models.ForecastDashboardModel input)
        {
            var options = new List<SelectListItem>();
            using (var dbContext = new EnVisageEntities())
            {
                var projectStatuses = dbContext.Status.ToList();
                var allItem = new SelectListItem();
                allItem.Text = "All";
                allItem.Value = "All";
                options.Add(allItem);
                options.AddRange(projectStatuses.Select(creditDepartment => new SelectListItem()
                {
                    Value = creditDepartment.Id.ToString(),
                    Text = creditDepartment.Name
                }));
            }
            return options;
        }

		public static IEnumerable<SelectListItem> GetProjectClassificationDropdown(EnVisage.Models.ForecastDashboardModel input)
        {
            var options = new List<SelectListItem>();
            using (var dbContext = new EnVisageEntities())
            {
                var projectClassifications = dbContext.Types.ToList();
                var allItem = new SelectListItem();
                allItem.Text = "All";
                allItem.Value = "All";
                options.Add(allItem);
                options.AddRange(projectClassifications.Select(creditDepartment => new SelectListItem()
                {
                    Value = creditDepartment.Id.ToString(),
                    Text = creditDepartment.Name
                }));
            }
            return options;
        }
    }
}