SPAL-15: MVC display condition

.gitignore

@@ -9,3 +9,4 @@ node_modules/
 *.user
 .pnpm-debug.log
 .editorconfig
+*.orig

Lombiq.HelpfulExtensions/Extensions/Widgets/Drivers/ConditionDisplayDriver.cs

@@ -0,0 +1,31 @@
+using Lombiq.HelpfulExtensions.Extensions.Widgets.ViewModels;
+using Lombiq.HelpfulLibraries.OrchardCore.Contents;
+using OrchardCore.DisplayManagement.Handlers;
+using OrchardCore.DisplayManagement.Views;
+using OrchardCore.Rules;
+using System.Collections.Generic;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Drivers;
+
+public abstract class ConditionDisplayDriver<TCondition> : DisplayDriver<Condition, TCondition>
+    where TCondition : Condition
+{
+    public override IDisplayResult Display(TCondition model) =>
+        Combine(
+            InitializeDisplayType(CommonContentDisplayTypes.Summary, model),
+            InitializeDisplayType(CommonContentDisplayTypes.Thumbnail, model));
+
+    public override IDisplayResult Edit(TCondition model) =>
+        Combine(
+            InitializeDisplayType(CommonContentDisplayTypes.Detail, model, "Title"),
+            GetEditor(model));
+
+    protected abstract ConditionViewModel GetConditionViewModel(TCondition condition);
+    protected abstract IDisplayResult GetEditor(TCondition model);
+
+    private ShapeResult InitializeDisplayType(string displayType, TCondition model, string shapeTypeSuffix = null) =>
+        Initialize<ConditionViewModel>(
+                string.Join('_', new[] { "Condition", "Fields", displayType, shapeTypeSuffix }.WhereNot(string.IsNullOrEmpty)),
+                target => GetConditionViewModel(model).CopyTo(target))
+            .Location(displayType, CommonLocationNames.Content);
+}

Lombiq.HelpfulExtensions/Extensions/Widgets/Drivers/MvcConditionDisplayDriver.cs

@@ -0,0 +1,90 @@
+using Lombiq.HelpfulExtensions.Extensions.Widgets.Models;
+using Lombiq.HelpfulExtensions.Extensions.Widgets.ViewModels;
+using Microsoft.AspNetCore.Html;
+using Microsoft.AspNetCore.Mvc.Localization;
+using Microsoft.Extensions.Localization;
+using Newtonsoft.Json;
+using OrchardCore.DisplayManagement.ModelBinding;
+using OrchardCore.DisplayManagement.Views;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Drivers;
+
+public class MvcConditionDisplayDriver : ConditionDisplayDriver<MvcCondition>
+{
+    private readonly IHtmlLocalizer<MvcConditionDisplayDriver> H;
+    private readonly IStringLocalizer<MvcConditionDisplayDriver> T;
+    public MvcConditionDisplayDriver(
+        IHtmlLocalizer<MvcConditionDisplayDriver> htmlLocalizer,
+        IStringLocalizer<MvcConditionDisplayDriver> stringLocalizer)
+    {
+        H = htmlLocalizer;
+        T = stringLocalizer;
+    }
+
+    protected override IDisplayResult GetEditor(MvcCondition model) =>
+        Initialize<MvcConditionViewModel>("MvcCondition_Fields_Edit", viewModel =>
+        {
+            viewModel.Area = model.Area;
+            viewModel.Controller = model.Controller;
+            viewModel.Action = model.Action;
+
+            foreach (var (key, value) in model.OtherRouteValues)
+            {
+                viewModel.OtherRouteNames.Add(key);
+                viewModel.OtherRouteValues.Add(value);
+            }
+        }).PlaceInContent();
+
+    public override async Task<IDisplayResult> UpdateAsync(MvcCondition model, IUpdateModel updater)
+    {
+        var viewModel = new MvcConditionViewModel();
+        if (await updater.TryUpdateModelAsync(viewModel, Prefix))
+        {
+            if (viewModel.OtherRouteNames.Count != viewModel.OtherRouteValues.Count)
+            {
+                updater.ModelState.AddModelError(
+                    nameof(viewModel.OtherRouteNames),
+                    T["The count of other route value names didn't match the count of other route values."]);
+            }
+
+            model.Area = viewModel.Area;
+            model.Controller = viewModel.Controller;
+            model.Action = viewModel.Action;
+
+            model.OtherRouteValues.Clear();
+            for (var i = 0; i < viewModel.OtherRouteNames.Count; i++)
+            {
+                model.OtherRouteValues[viewModel.OtherRouteNames[i]] = viewModel.OtherRouteValues[i];
+            }
+        }
+
+        return Edit(model);
+    }
+
+    protected override ConditionViewModel GetConditionViewModel(MvcCondition condition)
+    {
+        IHtmlContentBuilder summaryHint = new HtmlContentBuilder();
+
+        static IHtmlContentBuilder AppendIfNotEmpty(IHtmlContentBuilder summaryHint, string value, IHtmlContent label) =>
+            string.IsNullOrEmpty(value) ? summaryHint : summaryHint.AppendHtml(label).AppendHtml(" ");
+
+        summaryHint = AppendIfNotEmpty(summaryHint, condition.Area, H["Area: \"{0}\"", condition.Area]);
+        summaryHint = AppendIfNotEmpty(summaryHint, condition.Controller, H["Controller: \"{0}\"", condition.Controller]);
+        summaryHint = AppendIfNotEmpty(summaryHint, condition.Action, H["Action: \"{0}\"", condition.Action]);
+
+        if (condition.OtherRouteValues.Any())
+        {
+            summaryHint = summaryHint.AppendHtml(
+                H["Other route values: {0}", JsonConvert.SerializeObject(condition.OtherRouteValues)]);
+        }
+
+        return new ConditionViewModel
+        {
+            Title = H["MVC condition"],
+            Description = H["An MVC condition evaluates the currently route values such as controller and action name."],
+            SummaryHint = summaryHint,
+        };
+    }
+}

Lombiq.HelpfulExtensions/Extensions/Widgets/Drivers/MvcConditionEvaluatorDriver.cs

@@ -0,0 +1,34 @@
+using Lombiq.HelpfulExtensions.Extensions.Widgets.Models;
+using Microsoft.AspNetCore.Http;
+using OrchardCore.ContentManagement.Display.ContentDisplay;
+using OrchardCore.Rules;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Drivers;
+
+public class MvcConditionEvaluatorDriver : ContentDisplayDriver, IConditionEvaluator
+{
+    private readonly IHttpContextAccessor _hca;
+
+    public MvcConditionEvaluatorDriver(IHttpContextAccessor hca) =>
+        _hca = hca;
+
+    public ValueTask<bool> EvaluateAsync(Condition condition) => new(Evaluate((MvcCondition)condition));
+
+    private bool Evaluate(MvcCondition condition) =>
+        MatchRouteValue("area", condition.Area) &&
+        MatchRouteValue("controller", condition.Controller) &&
+        MatchRouteValue("action", condition.Action) &&
+        (!condition.OtherRouteValues.Any() || condition.OtherRouteValues.All(pair => MatchRouteValue(pair.Key, pair.Value)));
+
+    private bool MatchRouteValue(string name, string value)
+    {
+        // Ignore this match operation if the target value is not set.
+        if (string.IsNullOrWhiteSpace(value)) return true;
+
+        return _hca.HttpContext?.Request.RouteValues.TryGetValue(name, out var routeValue) == true &&
+               value.EqualsOrdinalIgnoreCase(routeValue?.ToString());
+    }
+}

Lombiq.HelpfulExtensions/Extensions/Widgets/Liquid/MenuWidgetLiquidFilter.cs

@@ -0,0 +1,133 @@
+using Fluid;
+using Fluid.Values;
+using Lombiq.HelpfulExtensions.Extensions.Widgets.ViewModels;
+using Lombiq.HelpfulLibraries.OrchardCore.Liquid;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Infrastructure;
+using Microsoft.AspNetCore.Mvc.Routing;
+using Microsoft.Extensions.Localization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using OrchardCore.Liquid;
+using OrchardCore.Navigation;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Threading.Tasks;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Liquid;
+
+public class MenuWidgetLiquidFilter : ILiquidFilter
+{
+    private readonly ILiquidContentDisplayService _liquidContentDisplayService;
+    private readonly Lazy<IUrlHelper> _urlHelperLazy;
+    private readonly IStringLocalizer<MenuWidgetLiquidFilter> T;
+
+    public MenuWidgetLiquidFilter(
+        IActionContextAccessor actionContextAccessor,
+        ILiquidContentDisplayService liquidContentDisplayService,
+        IStringLocalizer<MenuWidgetLiquidFilter> stringLocalizer,
+        IUrlHelperFactory urlHelperFactory)
+    {
+        _liquidContentDisplayService = liquidContentDisplayService;
+
+        _urlHelperLazy = new Lazy<IUrlHelper>(() =>
+            urlHelperFactory.GetUrlHelper(actionContextAccessor.ActionContext!));
+
+        T = stringLocalizer;
+    }
+
+    public ValueTask<FluidValue> ProcessAsync(FluidValue input, FilterArguments arguments, LiquidTemplateContext context)
+    {
+        bool noWrapper, localNav;
+        string classes;
+        noWrapper = arguments[nameof(noWrapper)].ToBooleanValue();
+        localNav = arguments[nameof(localNav)].ToBooleanValue();
+        classes = arguments[nameof(classes)].ToStringValue();
+
+        var converter = new LocalizedStringJsonConverter(T);
+        var serializer = new JsonSerializer();
+        serializer.Converters.Add(converter);
+        var serializerSettings = new JsonSerializerSettings();
+        serializerSettings.Converters.Add(converter);
+
+        var menuItems = input?.Type switch
+        {
+            FluidValues.String => JsonConvert.DeserializeObject<IList<MenuItem>>(
+                input!.ToStringValue(),
+                serializerSettings),
+            FluidValues.Object => input!.ToObjectValue() switch
+            {
+                IEnumerable<MenuItem> enumerable => enumerable.AsList(),
+                MenuItem single => new[] { single },
+                JArray jArray => jArray.ToObject<IList<MenuItem>>(serializer),
+                JObject jObject => new[] { jObject.ToObject<MenuItem>(serializer) },
+                _ => null,
+            },
+            _ => null,
+        };
+
+        UpdateMenuItems(menuItems, localNav);
+
+        return _liquidContentDisplayService.DisplayNewAsync<MenuWidgetViewModel>(
+            WidgetTypes.MenuWidget,
+            model =>
+            {
+                model.NoWrapper = noWrapper;
+                model.MenuItems = menuItems ?? Array.Empty<MenuItem>();
+                model.HtmlClasses = classes;
+            });
+    }
+
+    private void UpdateMenuItems(IEnumerable<MenuItem> menuItems, bool localNav)
+    {
+        if (menuItems == null) return;
+
+        foreach (var item in menuItems)
+        {
+            if (!string.IsNullOrEmpty(item.Url))
+            {
+                var finalUrl = _urlHelperLazy.Value.Content(item.Url);
+                item.Url = finalUrl;
+                item.Href = finalUrl;
+            }
+
+            item.LocalNav = localNav || item.LocalNav;
+
+            UpdateMenuItems(item.Items, localNav);
+        }
+    }
+
+    public class LocalizedStringJsonConverter : JsonConverter<LocalizedString>
+    {
+        private readonly IStringLocalizer T;
+
+        public LocalizedStringJsonConverter(IStringLocalizer stringLocalizer) =>
+            T = stringLocalizer;
+
+        public override void WriteJson(JsonWriter writer, LocalizedString value, JsonSerializer serializer) =>
+            writer.WriteValue(value?.Value);
+
+        [SuppressMessage("Style", "IDE0010:Add missing cases", Justification = "We don't want to handle other token types.")]
+        public override LocalizedString ReadJson(
+            JsonReader reader,
+            Type objectType,
+            LocalizedString existingValue,
+            bool hasExistingValue,
+            JsonSerializer serializer)
+        {
+            switch (reader.TokenType)
+            {
+                case JsonToken.String:
+                    return JToken.ReadFrom(reader).ToObject<string>() is { } text ? T[text] : null;
+                case JsonToken.StartObject:
+                    var data = new Dictionary<string, string>(
+                        JToken.ReadFrom(reader).ToObject<Dictionary<string, string>>(),
+                        StringComparer.OrdinalIgnoreCase);
+                    return new LocalizedString(data[nameof(LocalizedString.Name)], data[nameof(LocalizedString.Value)]);
+                default:
+                    throw new InvalidOperationException("Unable to parse JSON!");
+            }
+        }
+    }
+}

Lombiq.HelpfulExtensions/Extensions/Widgets/Migrations.cs

@@ -1,4 +1,6 @@
+using Lombiq.HelpfulExtensions.Extensions.Widgets.Models;
 using Lombiq.HelpfulLibraries.OrchardCore.Contents;
+using OrchardCore.ContentFields.Settings;
 using OrchardCore.ContentManagement.Metadata;
 using OrchardCore.ContentManagement.Metadata.Settings;
 using OrchardCore.Data.Migration;
@@ -55,7 +57,25 @@ public int Create()
             )
         );
 
-        return 4;
+        var contentItemWidgetPartName = _contentDefinitionManager.AlterPartDefinition<ContentItemWidget>(builder => builder
+            .WithField(part => part.ContentToDisplay, field => field
+                .WithDisplayName("Content to display")
+                .WithSettings(new ContentPickerFieldSettings
+                {
+                    DisplayAllContentTypes = true,
+                    Multiple = true,
+                }))
+            .WithField(part => part.DisplayType, field => field.WithDisplayName("Display type"))
+            .WithField(part => part.GroupId, field => field.WithDisplayName("Group ID"))
+        );
+
+        _contentDefinitionManager.AlterTypeDefinition(WidgetTypes.ContentItemWidget, builder => builder
+            .Securable()
+            .Stereotype(CommonStereotypes.Widget)
+            .WithPart(contentItemWidgetPartName)
+        );
+
+        return 5;
     }
 
     public int UpdateFrom1()
@@ -90,4 +110,21 @@ public int UpdateFrom3()
 
         return 4;
     }
+
+    public int UpdateFrom4()
+    {
+        var contentItemWidgetPartName = _contentDefinitionManager.AlterPartDefinition<ContentItemWidget>(builder => builder
+            .WithField(part => part.ContentToDisplay, field => field.WithDisplayName("Content to display"))
+            .WithField(part => part.DisplayType, field => field.WithDisplayName("Display type"))
+            .WithField(part => part.GroupId, field => field.WithDisplayName("Group ID"))
+        );
+
+        _contentDefinitionManager.AlterTypeDefinition(WidgetTypes.ContentItemWidget, builder => builder
+            .Securable()
+            .Stereotype(CommonStereotypes.Widget)
+            .WithPart(contentItemWidgetPartName)
+        );
+
+        return 5;
+    }
 }

Lombiq.HelpfulExtensions/Extensions/Widgets/Models/ContentItemWidget.cs

@@ -0,0 +1,11 @@
+using OrchardCore.ContentFields.Fields;
+using OrchardCore.ContentManagement;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Models;
+
+public class ContentItemWidget : ContentPart
+{
+    public ContentPickerField ContentToDisplay { get; set; } = new();
+    public TextField DisplayType { get; set; } = new();
+    public TextField GroupId { get; set; } = new();
+}

Lombiq.HelpfulExtensions/Extensions/Widgets/Models/MvcCondition.cs

@@ -0,0 +1,12 @@
+using OrchardCore.Rules;
+using System.Collections.Generic;
+
+namespace Lombiq.HelpfulExtensions.Extensions.Widgets.Models;
+
+public class MvcCondition : Condition
+{
+    public string Area { get; set; }
+    public string Controller { get; set; }
+    public string Action { get; set; }
+    public IDictionary<string, string> OtherRouteValues { get; } = new Dictionary<string, string>();
+}