j3rbr0wn/AdminToolMenuProvider.cs

## _ViewImports.cshtml
@using EPiServer.Framework.Localization
@using EPiServer.Web.Mvc.Html
@using EPiServer.Shell.Web.Mvc.Html
@using EPiServer.Core
@using EPiServer.Web
@using EPiServer.Web.Mvc
@using EPiServer.Web.Routing
@using MyCms12Website.Models.ViewModels
@using MyCms12Website.Models.Blocks
@using MyCms12Website.Models.Pages

@using Microsoft.AspNetCore.Mvc.Razor
@using Microsoft.AspNetCore.Html

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

## AdminToolMenuProvider.cs
using EPiServer.Authorization;
using EPiServer.Shell.Navigation;

namespace MyCms12Website.Business.Plugins;

[MenuProvider]
public class AdminToolMenuProvider : IMenuProvider
{
    public IEnumerable<MenuItem> GetMenuItems()
    {
        var contentCleaner = new UrlMenuItem("Content Cleaner", MenuPaths.Global + "/cms/admin/contentcleanertool", "/contentcleanertool/index")
        {
            IsAvailable = _ => true,
            SortIndex = 70,
            AuthorizationPolicy = CmsPolicyNames.CmsAdmin
        };

        return new List<MenuItem>(1)
        {
            contentCleaner
        };
    }
}

## ContentCleanerTool.cshtml
@using EPiServer.Framework.Web.Resources
@using EPiServer.Shell.Navigation
@using EPiServer.Editor
@using Microsoft.AspNetCore.Mvc.TagHelpers

@model MyCms12Website.Business.Plugins.ContentCleanerTool.ContentCleanerToolViewModel

@{
    Layout = null;
}

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Content Type Cleaner Tool</title>

    <!-- Shell -->
    @ClientResources.RenderResources("ShellCore")

    <!-- LightTheme -->
    @ClientResources.RenderResources("ShellCoreLightTheme")
</head>
<body class="epi-workspace">
    @Html.AntiForgeryToken()
    @Html.Raw(Html.CreatePlatformNavigationMenu())
    <div @Html.Raw(Html.ApplyPlatformNavigation())>
        <div class="epi-contentContainer epi-padding">
            <div class="epi-contentArea">

                <h1 class="EP-prefix">Content Type Cleaner Tool</h1>

                <div>
                    <p id="message"></p>
                </div>

                <div>
                    <form action="/contentcleanertool/index/" method="post" id="contentTypeSelectionForm">
                        <h2>Content Type Selection</h2>

                        <div>
                            <label asp-for="ContentTypeId">Select content type:</label>
                            <select asp-for="ContentTypeId" asp-items="@Model.ContentItems">
                            </select>

                            <button type="submit" class="epi-cmsButton">List content</button>
                        </div>

                    </form>
                </div>

                @if (Model.ContentUsages?.Any() ?? false)
                {
                    <div>
                        <h2>Content</h2>
                        <table>
                            <tr>
                                <th>Id</th>
                                <th>Location</th>
                                <th></th>
                                <th></th>
                            </tr>
                            @foreach (var item in Model.ContentUsages)
                            {
                                <tr>
                                    <td>
                                        @item.Content.ContentLink.ID
                                    </td>
                                    <td>
                                        <a href="@item.ContentUrl" target="_blank">
                                            @item.Breadcrumb
                                        </a>
                                    </td>
                                    <td>
                                        <a href="@PageEditing.GetEditUrl(item.Content.ContentLink)" target="_blank">
                                            Edit
                                        </a>
                                    </td>
                                    <td>
                                        <button class="js-delete-button" data-contentref="@item.Content.ContentLink">
                                            Delete
                                        </button>
                                    </td>
                                </tr>
                            }
                        </table>
                    </div>
                }

            </div>
        </div>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/jquery@3.6.4/dist/jquery.min.js" crossorigin="anonymous"></script>

    <script>
        $(document).ready(function () {
            $('.js-delete-button').click(function () {
                let contentRef = $(this).data('contentref');
                $.get('/contentcleanertool/delete/', { contentRef: contentRef })
                    .done(function (data) {
                        $( "#contentTypeSelectionForm" ).trigger( "submit" );
                    })
                    .fail(function(jqXHR, textStatus, errorThrown) {
                        $( "#message" ).text( `Delete failed - ${jqXHR.responseText}` );
                    });
            });
        });
    </script>

</body>
</html>

## ContentCleanerToolController.cs
using EPiServer.Security;
using EPiServer.Web.Routing;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using System.Net;
using System.Text;

namespace MyCms12Website.Business.Plugins.ContentCleanerTool.Controllers;

[Authorize(Roles = "Administrators")]
[Route("[controller]")]
public class ContentCleanerToolController : Controller
{
    private readonly IContentRepository _contentRepository;
    private readonly IContentModelUsage _contentModelUsage;
    private readonly IContentTypeRepository _contentTypeRepository;
    private readonly IUrlResolver _urlResolver;

    public ContentCleanerToolController(IUrlResolver urlResolver, IContentTypeRepository contentTypeRepository, IContentModelUsage contentModelUsage, IContentRepository contentRepository)
    {
        _urlResolver = urlResolver;
        _contentTypeRepository = contentTypeRepository;
        _contentModelUsage = contentModelUsage;
        _contentRepository = contentRepository;
    }

    [Route("[action]")]
    [HttpGet]
    public IActionResult Index()
    {
        var model = new ContentCleanerToolViewModel()
        {
            ContentItems = GetContentTypes()
        };

        return View("/Business/Plugins/ContentCleanerTool/Views/ContentCleanerTool/Index.cshtml", model);
    }

    [Route("[action]")]
    [HttpPost]
    public IActionResult Index(ContentCleanerToolViewModel model)
    {
        model.ContentItems = GetContentTypes();

        if (ModelState.IsValid)
        {
            model.ContentUsages = GetContentTypeUsages(model.ContentTypeId);
        }

        return View("/Business/Plugins/ContentCleanerTool/Views/ContentCleanerTool/Index.cshtml", model);
    }

    [Route("[action]")]
    [HttpGet]
    public IActionResult Delete(string contentRef)
    {
        try
        {
            if (ModelState.IsValid)
            {
                DeleteItem(contentRef);
            }

            return new OkResult();
        }
        catch (Exception ex)
        {
            return new ContentResult
            {
                StatusCode = (int)HttpStatusCode.InternalServerError,
                ContentType = "application/json",
                Content = $"Error - {ex.Message}"
            };
        }
    }

    private void DeleteItem(string contentRef)
    {
        _contentRepository.Delete(ContentReference.Parse(contentRef), forceDelete: false, access: AccessLevel.NoAccess);
    }

    private List<ContentUsageBreadcrumb<ContentUsage>> GetContentTypeUsages(int selectedTypeID)
    {
        var contentType = _contentTypeRepository.Load(selectedTypeID);
        return _contentModelUsage.ListContentOfContentType(contentType)
            .Select(x => new ContentUsageBreadcrumb<ContentUsage>(x)
            {
                Breadcrumb = BreadCrumb(x.ContentLink),
                ContentUrl = _urlResolver.GetUrl(x.ContentLink)
            })
            .OrderBy(x => x.Name)
            .ToList();
    }

    private IEnumerable<SelectListItem> GetContentTypes()
    {
        var uploads = _contentTypeRepository.List().OrderBy(p => p.Name);

        return uploads.Select(x => new SelectListItem
        {
            Value = x.ID.ToString(),
            Text = x.Name
        }).ToList();
    }

    public string BreadCrumb(ContentReference cReference)
    {
        if (cReference == null)
            return string.Empty;

        var ancestor = _contentRepository.GetAncestors(cReference).ToList();
        var content = _contentRepository.Get<IContent>(cReference);

        var path = new StringBuilder();

        for (var x = ancestor.Count - 1; x >= 0; x--)
        {
            path.Append($"\\{ancestor[x].Name}");
        }

        return $"{path}\\{content.Name}".Trim("\\".ToCharArray());
    }
}

## ContentCleanerToolViewModel.cs
using Microsoft.AspNetCore.Mvc.Rendering;

namespace MyCms12Website.Business.Plugins.ContentCleanerTool;

public class ContentCleanerToolViewModel
{
    public IEnumerable<SelectListItem> ContentItems { get; set; }

    public IEnumerable<ContentUsageBreadcrumb<ContentUsage>> ContentUsages { get; set; } = new List<ContentUsageBreadcrumb<ContentUsage>>();

    public int ContentTypeId { get; set; }
}

public class ContentUsageBreadcrumb<TContent> : ContentUsage
{
    public ContentUsageBreadcrumb(TContent content)
    {
        Content = content;
    }

    public TContent Content { get; }
    public string ContentUrl { get; set; }
    public string Breadcrumb { get; set; }
}
	@using EPiServer.Framework.Localization
	@using EPiServer.Web.Mvc.Html
	@using EPiServer.Shell.Web.Mvc.Html
	@using EPiServer.Core
	@using EPiServer.Web
	@using EPiServer.Web.Mvc
	@using EPiServer.Web.Routing
	@using MyCms12Website.Models.ViewModels
	@using MyCms12Website.Models.Blocks
	@using MyCms12Website.Models.Pages

	@using Microsoft.AspNetCore.Mvc.Razor
	@using Microsoft.AspNetCore.Html

	@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
	using EPiServer.Authorization;
	using EPiServer.Shell.Navigation;

	namespace MyCms12Website.Business.Plugins;

	[MenuProvider]
	public class AdminToolMenuProvider : IMenuProvider
	{
	public IEnumerable<MenuItem> GetMenuItems()
	{
	var contentCleaner = new UrlMenuItem("Content Cleaner", MenuPaths.Global + "/cms/admin/contentcleanertool", "/contentcleanertool/index")
	{
	IsAvailable = _ => true,
	SortIndex = 70,
	AuthorizationPolicy = CmsPolicyNames.CmsAdmin
	};

	return new List<MenuItem>(1)
	{
	contentCleaner
	};
	}
	}
	@using EPiServer.Framework.Web.Resources
	@using EPiServer.Shell.Navigation
	@using EPiServer.Editor
	@using Microsoft.AspNetCore.Mvc.TagHelpers

	@model MyCms12Website.Business.Plugins.ContentCleanerTool.ContentCleanerToolViewModel

	@{
	Layout = null;
	}

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>Content Type Cleaner Tool</title>

	<!-- Shell -->
	@ClientResources.RenderResources("ShellCore")

	<!-- LightTheme -->
	@ClientResources.RenderResources("ShellCoreLightTheme")
	</head>
	<body class="epi-workspace">
	@Html.AntiForgeryToken()
	@Html.Raw(Html.CreatePlatformNavigationMenu())
	<div @Html.Raw(Html.ApplyPlatformNavigation())>
	<div class="epi-contentContainer epi-padding">
	<div class="epi-contentArea">

	<h1 class="EP-prefix">Content Type Cleaner Tool</h1>

	<div>
	<p id="message"></p>
	</div>

	<div>
	<form action="/contentcleanertool/index/" method="post" id="contentTypeSelectionForm">
	<h2>Content Type Selection</h2>

	<div>
	<label asp-for="ContentTypeId">Select content type:</label>
	<select asp-for="ContentTypeId" asp-items="@Model.ContentItems">
	</select>

	<button type="submit" class="epi-cmsButton">List content</button>
	</div>

	</form>
	</div>

	@if (Model.ContentUsages?.Any() ?? false)
	{
	<div>
	<h2>Content</h2>
	<table>
	<tr>
	<th>Id</th>
	<th>Location</th>
	<th></th>
	<th></th>
	</tr>
	@foreach (var item in Model.ContentUsages)
	{
	<tr>
	<td>
	@item.Content.ContentLink.ID
	</td>
	<td>
	<a href="@item.ContentUrl" target="_blank">
	@item.Breadcrumb
	</a>
	</td>
	<td>
	<a href="@PageEditing.GetEditUrl(item.Content.ContentLink)" target="_blank">
	Edit
	</a>
	</td>
	<td>
	<button class="js-delete-button" data-contentref="@item.Content.ContentLink">
	Delete
	</button>
	</td>
	</tr>
	}
	</table>
	</div>
	}

	</div>
	</div>
	</div>

	<script src="https://cdn.jsdelivr.net/npm/jquery@3.6.4/dist/jquery.min.js" crossorigin="anonymous"></script>

	<script>
	$(document).ready(function () {
	$('.js-delete-button').click(function () {
	let contentRef = $(this).data('contentref');
	$.get('/contentcleanertool/delete/', { contentRef: contentRef })
	.done(function (data) {
	$( "#contentTypeSelectionForm" ).trigger( "submit" );
	})
	.fail(function(jqXHR, textStatus, errorThrown) {
	$( "#message" ).text( `Delete failed - ${jqXHR.responseText}` );
	});
	});
	});
	</script>

	</body>
	</html>
	using EPiServer.Security;
	using EPiServer.Web.Routing;
	using Microsoft.AspNetCore.Authorization;
	using Microsoft.AspNetCore.Mvc;
	using Microsoft.AspNetCore.Mvc.Rendering;
	using System.Net;
	using System.Text;

	namespace MyCms12Website.Business.Plugins.ContentCleanerTool.Controllers;

	[Authorize(Roles = "Administrators")]
	[Route("[controller]")]
	public class ContentCleanerToolController : Controller
	{
	private readonly IContentRepository _contentRepository;
	private readonly IContentModelUsage _contentModelUsage;
	private readonly IContentTypeRepository _contentTypeRepository;
	private readonly IUrlResolver _urlResolver;

	public ContentCleanerToolController(IUrlResolver urlResolver, IContentTypeRepository contentTypeRepository, IContentModelUsage contentModelUsage, IContentRepository contentRepository)
	{
	_urlResolver = urlResolver;
	_contentTypeRepository = contentTypeRepository;
	_contentModelUsage = contentModelUsage;
	_contentRepository = contentRepository;
	}

	[Route("[action]")]
	[HttpGet]
	public IActionResult Index()
	{
	var model = new ContentCleanerToolViewModel()
	{
	ContentItems = GetContentTypes()
	};

	return View("/Business/Plugins/ContentCleanerTool/Views/ContentCleanerTool/Index.cshtml", model);
	}

	[Route("[action]")]
	[HttpPost]
	public IActionResult Index(ContentCleanerToolViewModel model)
	{
	model.ContentItems = GetContentTypes();

	if (ModelState.IsValid)
	{
	model.ContentUsages = GetContentTypeUsages(model.ContentTypeId);
	}

	return View("/Business/Plugins/ContentCleanerTool/Views/ContentCleanerTool/Index.cshtml", model);
	}

	[Route("[action]")]
	[HttpGet]
	public IActionResult Delete(string contentRef)
	{
	try
	{
	if (ModelState.IsValid)
	{
	DeleteItem(contentRef);
	}

	return new OkResult();
	}
	catch (Exception ex)
	{
	return new ContentResult
	{
	StatusCode = (int)HttpStatusCode.InternalServerError,
	ContentType = "application/json",
	Content = $"Error - {ex.Message}"
	};
	}
	}

	private void DeleteItem(string contentRef)
	{
	_contentRepository.Delete(ContentReference.Parse(contentRef), forceDelete: false, access: AccessLevel.NoAccess);
	}

	private List<ContentUsageBreadcrumb<ContentUsage>> GetContentTypeUsages(int selectedTypeID)
	{
	var contentType = _contentTypeRepository.Load(selectedTypeID);
	return _contentModelUsage.ListContentOfContentType(contentType)
	.Select(x => new ContentUsageBreadcrumb<ContentUsage>(x)
	{
	Breadcrumb = BreadCrumb(x.ContentLink),
	ContentUrl = _urlResolver.GetUrl(x.ContentLink)
	})
	.OrderBy(x => x.Name)
	.ToList();
	}

	private IEnumerable<SelectListItem> GetContentTypes()
	{
	var uploads = _contentTypeRepository.List().OrderBy(p => p.Name);

	return uploads.Select(x => new SelectListItem
	{
	Value = x.ID.ToString(),
	Text = x.Name
	}).ToList();
	}

	public string BreadCrumb(ContentReference cReference)
	{
	if (cReference == null)
	return string.Empty;

	var ancestor = _contentRepository.GetAncestors(cReference).ToList();
	var content = _contentRepository.Get<IContent>(cReference);

	var path = new StringBuilder();

	for (var x = ancestor.Count - 1; x >= 0; x--)
	{
	path.Append($"\\{ancestor[x].Name}");
	}

	return $"{path}\\{content.Name}".Trim("\\".ToCharArray());
	}
	}
	using Microsoft.AspNetCore.Mvc.Rendering;

	namespace MyCms12Website.Business.Plugins.ContentCleanerTool;

	public class ContentCleanerToolViewModel
	{
	public IEnumerable<SelectListItem> ContentItems { get; set; }

	public IEnumerable<ContentUsageBreadcrumb<ContentUsage>> ContentUsages { get; set; } = new List<ContentUsageBreadcrumb<ContentUsage>>();

	public int ContentTypeId { get; set; }
	}

	public class ContentUsageBreadcrumb<TContent> : ContentUsage
	{
	public ContentUsageBreadcrumb(TContent content)
	{
	Content = content;
	}

	public TContent Content { get; }
	public string ContentUrl { get; set; }
	public string Breadcrumb { get; set; }
	}