//
// BootstrapMenuRender.cs
//
// Author:
//       Carsten Sonne Larsen <cs@innolan.dk>
//
// Copyright (c) 2013 Carsten Sonne Larsen
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using Ntp.Analyzer.Config.Page;
using Ntp.Analyzer.Config.Navigation;

namespace Ntp.Analyzer.Render
{
    public sealed class BootstrapMenuRender : HtmlObjectRender
    {
        public BootstrapMenuRender (string webPath, MenuConfiguration menu, ILinkable page)
            : base(webPath)
        {
            this.menu = menu;
            this.page = page;
        }

        private readonly MenuConfiguration menu;
        private readonly ILinkable page;

        public override string RenderHead ()
        {
            return String.Empty;
        }

        public override string Render ()
        {
            StringBuilder builder = new StringBuilder ();

            builder.AppendLine (@"  <div class=""navbar navbar-inverse navbar-fixed-top"">");
            builder.AppendLine (@"    <div class=""container"">");
            builder.AppendLine (@"      <div class=""navbar-header"">");
            builder.AppendLine (@"        <button type=""button"" class=""navbar-toggle"" data-toggle=""collapse"" data-target="".navbar-collapse"">");
            builder.AppendLine (@"          <span class=""icon-bar""></span>");
            builder.AppendLine (@"          <span class=""icon-bar""></span>");
            builder.AppendLine (@"          <span class=""icon-bar""></span>");
            builder.AppendLine (@"        </button>");

            HeadMenuItemConfiguration headItem = menu.MenuItems.
                Single (i => i is HeadMenuItemConfiguration) as HeadMenuItemConfiguration;

            builder.AppendLine(this.AppendWithWebpath(
                @"        <a class=""navbar-brand"" href=""{0}{1}"">{2}</a>",
                headItem.Link, headItem.Caption));

            builder.AppendLine (@"      </div>");
            builder.AppendLine (@"      <div class=""navbar-collapse collapse"">");
            builder.AppendLine (@"        <ul class=""nav navbar-nav"">");

            foreach (MenuItemConfiguration item in menu.MenuItems.Where(i => !(i is HeadMenuItemConfiguration))) {
                string active = (item.Page == page) ? @" class=""active""" : String.Empty;

                if (item is LinkMenuItemConfiguration || item is PageMenuItemConfiguration) {
                    builder.AppendLine(this.AppendWithWebpath(
                        @"          <li{3}><a href=""{0}{1}"">{2}</a></li>",
                        item.Link, item.Caption, active));
                } else if (item is DropdownItemConfiguration) {
                    builder.AppendLine (@"          <li class=""dropdown"">");
                    builder.AppendLine (@"            <a href=""#"" class=""dropdown-toggle"" data-toggle=""dropdown"">Peers <b class=""caret""></b></a>");
                    builder.AppendLine (@"            <ul class=""dropdown-menu"">");

                    DropdownItemConfiguration dropdownItem = item as DropdownItemConfiguration;

                    foreach (MenuItemConfiguration subItem in dropdownItem.MenuItems) {

                        if (subItem is LinkMenuItemConfiguration || subItem is PageMenuItemConfiguration) {
                            builder.AppendLine(this.AppendWithWebpath(
                                @"              <li><a href=""{0}{1}"">{2}</a></li>",
                                subItem.Link, subItem.Caption));

                        } else if (subItem is SpacerMenuItemConfiguration) {
                            builder.AppendLine (@"              <li class=""divider""></li>");

                        } else if (subItem is HeaderMenuItemConfiguration) {
                            builder.AppendLine (String.Format (
                                @"              <li class=""dropdown-header"">{0}</li>", subItem.Caption));

                        } else {
                            throw new NotSupportedException ("Unknown item type.");
                        }
                    }

                    builder.AppendLine (@"            </ul>");

                } else {
                    throw new NotSupportedException ("Unknown item type.");
                }
            }

            builder.AppendLine (@"          </li>");
            builder.AppendLine (@"        </ul>");
            builder.AppendLine (@"      </div>");
            builder.AppendLine (@"    </div>");
            builder.AppendLine (@"  </div>");

            return builder.ToString ();
        }

        public override string RenderFooter ()
        {
            return String.Empty;   
        }
    }
}