feat: pivot to social media workflow app

backend/Modules/Workspaces/Handlers/CreateWorkspace.cs

@@ -0,0 +1,80 @@
+using Socialize.Infrastructure.Security;
+using Socialize.Modules.Workspaces.Data;
+
+namespace Socialize.Modules.Workspaces.Handlers;
+
+public record CreateWorkspaceRequest(
+    string Name,
+    string Slug,
+    string TimeZone);
+
+public class CreateWorkspaceRequestValidator
+    : Validator<CreateWorkspaceRequest>
+{
+    public CreateWorkspaceRequestValidator()
+    {
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(256);
+        RuleFor(x => x.Slug)
+            .NotEmpty()
+            .MaximumLength(128)
+            .Matches("^[a-z0-9]+(?:-[a-z0-9]+)*$");
+        RuleFor(x => x.TimeZone).NotEmpty().MaximumLength(128);
+    }
+}
+
+public class CreateWorkspaceHandler(
+    AppDbContext dbContext,
+    AccessScopeService accessScopeService)
+    : Endpoint<CreateWorkspaceRequest, WorkspaceDto>
+{
+    public override void Configure()
+    {
+        Post("/api/workspaces");
+        Options(o => o.WithTags("Workspaces"));
+    }
+
+    public override async Task HandleAsync(CreateWorkspaceRequest request, CancellationToken ct)
+    {
+        if (!accessScopeService.IsManager(User))
+        {
+            await SendForbiddenAsync(ct);
+            return;
+        }
+
+        string normalizedName = request.Name.Trim();
+        string normalizedSlug = request.Slug.Trim().ToLowerInvariant();
+        string normalizedTimeZone = request.TimeZone.Trim();
+
+        bool duplicateWorkspace = await dbContext.Workspaces
+            .AnyAsync(workspace => workspace.Slug == normalizedSlug, ct);
+
+        if (duplicateWorkspace)
+        {
+            AddError(request => request.Slug, "A workspace with this slug already exists.");
+            await SendErrorsAsync(StatusCodes.Status409Conflict, ct);
+            return;
+        }
+
+        Workspace workspace = new()
+        {
+            Id = Guid.NewGuid(),
+            Name = normalizedName,
+            Slug = normalizedSlug,
+            OwnerUserId = User.GetUserId(),
+            TimeZone = normalizedTimeZone,
+            CreatedAt = DateTimeOffset.UtcNow,
+        };
+
+        dbContext.Workspaces.Add(workspace);
+        await dbContext.SaveChangesAsync(ct);
+
+        WorkspaceDto dto = new(
+            workspace.Id,
+            workspace.Name,
+            workspace.Slug,
+            workspace.TimeZone,
+            workspace.CreatedAt);
+
+        await SendAsync(dto, StatusCodes.Status201Created, ct);
+    }
+}