feat: Refactor activity and project handlers to use utility functions for ID parsing and response handling

backend/internal/models/project.go

@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/oklog/ulid/v2"
 	"github.com/timetracker/backend/internal/types"
 	"gorm.io/gorm"
 )
@@ -72,7 +71,7 @@ func GetProjectByID(ctx context.Context, id types.ULID) (*Project, error) {
 }
 
 // GetProjectWithCustomer loads a project with the associated customer information
-func GetProjectWithCustomer(ctx context.Context, id ulid.ULID) (*Project, error) {
+func GetProjectWithCustomer(ctx context.Context, id types.ULID) (*Project, error) {
 	var project Project
 	result := GetEngine(ctx).Preload("Customer").Where("id = ?", id).First(&project)
 	if result.Error != nil {
@@ -105,9 +104,9 @@ func GetAllProjectsWithCustomers(ctx context.Context) ([]Project, error) {
 }
 
 // GetProjectsByCustomerID returns all projects of a specific customer
-func GetProjectsByCustomerID(ctx context.Context, customerID ulid.ULID) ([]Project, error) {
+func GetProjectsByCustomerID(ctx context.Context, customerId types.ULID) ([]Project, error) {
 	var projects []Project
-	result := GetEngine(ctx).Where("customer_id = ?", customerID).Find(&projects)
+	result := GetEngine(ctx).Where("customer_id = ?", customerId.ULID).Find(&projects)
 	if result.Error != nil {
 		return nil, result.Error
 	}
@@ -180,7 +179,7 @@ func UpdateProject(ctx context.Context, update ProjectUpdate) (*Project, error)
 }
 
 // DeleteProject deletes a project by its ID
-func DeleteProject(ctx context.Context, id ulid.ULID) error {
+func DeleteProject(ctx context.Context, id types.ULID) error {
 	// Here you could check if dependent entities exist
 	result := GetEngine(ctx).Delete(&Project{}, id)
 	if result.Error != nil {