💄: Update Tag colour to match changes

- In [version 5](alphagov/govuk-design-system-backlog#62 (comment)) of the GDS front-end packages, they have changed the tag colours. As a result, our "dark blue" tag no longer existed, so all of our tags were using the default colours.
- Changed tag colour match changes.

:zap: Changed GetSectionSubmissionStatuses to return List

- Improves performance by not having to call `.ToList` on an object that is already a List

src/Dfe.PlanTech.Application/Submissions/Queries/GetSubmissionStatusesQuery.cs

@@ -19,7 +19,7 @@ public GetSubmissionStatusesQuery(IPlanTechDbContext db, IUser userHelper)
 
     }
 
-    public IList<SectionStatusDto> GetSectionSubmissionStatuses(IEnumerable<ISectionComponent> sections)
+    public List<SectionStatusDto> GetSectionSubmissionStatuses(IEnumerable<ISectionComponent> sections)
     {
         int establishmentId = _userHelper.GetEstablishmentId().Result;
 

src/Dfe.PlanTech.Domain/Interfaces/IGetSubmissionStatusesQuery.cs

@@ -5,7 +5,7 @@ namespace Dfe.PlanTech.Domain.Interfaces;
 
 public interface IGetSubmissionStatusesQuery
 {
-    IList<SectionStatusDto> GetSectionSubmissionStatuses(IEnumerable<ISectionComponent> sections);
+    List<SectionStatusDto> GetSectionSubmissionStatuses(IEnumerable<ISectionComponent> sections);
 
     Task<SectionStatusNew> GetSectionSubmissionStatusAsync(int establishmentId,
                                                            ISectionComponent section,

src/Dfe.PlanTech.Web/TagHelpers/TaskList/TagColour.cs

@@ -1,10 +1,14 @@
 namespace Dfe.PlanTech.Web.TagHelpers.TaskList;
 
-public enum TagColour
+public static class TagColour
 {
-    Default,
-    Blue,
-    Grey,
-    Red,
-    DarkBlue,
+    public readonly static string Default = "blue";
+    public readonly static string Blue = "blue";
+    public readonly static string Grey = "grey";
+    public readonly static string LightBlue = "light-blue";
+    public readonly static string Red = "red";
+
+    private readonly static string[] _colours = [Blue, Grey, LightBlue, Red];
+
+    public static string GetMatchingColour(string? toMatch) => string.IsNullOrEmpty(toMatch) ? Default : _colours.FirstOrDefault(colour => colour == toMatch, Default);
 }

src/Dfe.PlanTech.Web/TagHelpers/TaskList/TaskListTagTagHelper.cs

@@ -16,7 +16,7 @@ public TaskListTagTagHelper()
         TagName = "strong";
     }
 
-    protected TagColour TagColour => Enum.TryParse(Colour, true, out TagColour colour) ? colour : TagColour.Default;
+    protected string TagClassColour => TagColour.GetMatchingColour(Colour);
 
     protected override string CreateClassesAttribute()
     {
@@ -40,13 +40,12 @@ private void AppendExtraClasses(StringBuilder stringBuilder)
 
     private void AppendTagColour(StringBuilder stringBuilder)
     {
-        var tagColour = TagColour;
-        if (tagColour != TagColour.Default)
+        if (TagClassColour != TagColour.Default)
         {
             stringBuilder.Append(' ');
             stringBuilder.Append(_class);
             stringBuilder.Append("--");
-            stringBuilder.Append(tagColour.ToString().ToLower());
+            stringBuilder.Append(TagClassColour);
         }
     }
 

src/Dfe.PlanTech.Web/ViewComponents/CategorySectionViewComponent.cs

@@ -70,7 +70,7 @@ private static void SetCategorySectionDtoTagWithCurrentStatus(Category category,
 
         if (sectionStatusCompleted != null)
         {
-            categorySectionDto.TagColour = sectionStatusCompleted == 1 ? TagColour.DarkBlue.ToString() : TagColour.Blue.ToString();
+            categorySectionDto.TagColour = sectionStatusCompleted == 1 ? TagColour.Blue : TagColour.LightBlue;
             categorySectionDto.TagText = sectionStatusCompleted == 1 ? "COMPLETE" : "IN PROGRESS";
         }
         else
@@ -102,7 +102,7 @@ public Category RetrieveSectionStatuses(Category category)
     {
         try
         {
-            category.SectionStatuses = _query.GetSectionSubmissionStatuses(category.Sections).ToList();
+            category.SectionStatuses = _query.GetSectionSubmissionStatuses(category.Sections);
             category.Completed = category.SectionStatuses.Count(x => x.Completed == 1);
             category.RetrievalError = false;
             return category;