feat: add organization onboarding

backend/src/Socialize.Api/Modules/Organizations/Handlers/CreateOrganization.cs

@@ -0,0 +1,64 @@
+using FastEndpoints;
+using Socialize.Api.Data;
+using Socialize.Api.Infrastructure.Security;
+using Socialize.Api.Modules.Organizations.Data;
+using Socialize.Api.Modules.Organizations.Services;
+
+namespace Socialize.Api.Modules.Organizations.Handlers;
+
+internal record CreateOrganizationRequest(
+    string Name);
+
+internal class CreateOrganizationRequestValidator
+    : Validator<CreateOrganizationRequest>
+{
+    public CreateOrganizationRequestValidator()
+    {
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(256);
+    }
+}
+
+internal class CreateOrganizationHandler(
+    AppDbContext dbContext)
+    : Endpoint<CreateOrganizationRequest, OrganizationDto>
+{
+    public override void Configure()
+    {
+        Post("/api/organizations");
+        Options(o => o.WithTags("Organizations"));
+    }
+
+    public override async Task HandleAsync(CreateOrganizationRequest request, CancellationToken ct)
+    {
+        ArgumentNullException.ThrowIfNull(request);
+
+        Guid userId = User.GetUserId();
+        Organization organization = new()
+        {
+            Id = Guid.NewGuid(),
+            Name = request.Name.Trim(),
+            OwnerUserId = userId,
+            CreatedAt = DateTimeOffset.UtcNow,
+        };
+
+        OrganizationMembership ownerMembership = new()
+        {
+            Id = Guid.NewGuid(),
+            OrganizationId = organization.Id,
+            UserId = userId,
+            Role = OrganizationRoles.Owner,
+            CreatedAt = DateTimeOffset.UtcNow,
+        };
+
+        dbContext.Organizations.Add(organization);
+        dbContext.OrganizationMemberships.Add(ownerMembership);
+        await dbContext.SaveChangesAsync(ct);
+
+        await SendAsync(
+            OrganizationDto.FromOrganization(
+                organization,
+                OrganizationPermissionRules.GetPermissionsForRole(OrganizationRoles.Owner)),
+            StatusCodes.Status201Created,
+            ct);
+    }
+}