From 9b389e1c9f951a11aa15d87ff3bcdc021bb4ce49 Mon Sep 17 00:00:00 2001
From: Tiago Yamamoto <tiago.ribeiro@inventcloud.com.br>
Date: Wed, 24 Dec 2025 18:11:17 -0300
Subject: [PATCH] fix(services): initialize all list slices to empty array to
 prevent null json response

---
 backend/internal/core/usecases/tenant/list_companies.go | 2 +-
 backend/internal/core/usecases/user/list_users.go       | 2 +-
 backend/internal/services/admin_service.go              | 4 ++--
 backend/internal/services/audit_service.go              | 2 +-
 backend/internal/services/job_service.go                | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/backend/internal/core/usecases/tenant/list_companies.go b/backend/internal/core/usecases/tenant/list_companies.go
index 5529b86..1ba7ebd 100644
--- a/backend/internal/core/usecases/tenant/list_companies.go
+++ b/backend/internal/core/usecases/tenant/list_companies.go
@@ -23,7 +23,7 @@ func (uc *ListCompaniesUseCase) Execute(ctx context.Context) ([]dto.CompanyRespo
 		return nil, err
 	}
 
-	var response []dto.CompanyResponse
+	response := []dto.CompanyResponse{}
 	for _, c := range companies {
 		response = append(response, dto.CompanyResponse{
 			ID:        c.ID,
diff --git a/backend/internal/core/usecases/user/list_users.go b/backend/internal/core/usecases/user/list_users.go
index 4400434..22ba794 100644
--- a/backend/internal/core/usecases/user/list_users.go
+++ b/backend/internal/core/usecases/user/list_users.go
@@ -38,7 +38,7 @@ func (uc *ListUsersUseCase) Execute(ctx context.Context, tenantID string, page,
 		return nil, err
 	}
 
-	var response []dto.UserResponse
+	response := []dto.UserResponse{}
 	for _, u := range users {
 		roles := make([]string, len(u.Roles))
 		for i, r := range u.Roles {
diff --git a/backend/internal/services/admin_service.go b/backend/internal/services/admin_service.go
index bd31833..4aca60b 100644
--- a/backend/internal/services/admin_service.go
+++ b/backend/internal/services/admin_service.go
@@ -57,7 +57,7 @@ func (s *AdminService) ListCompanies(ctx context.Context, verified *bool, page,
 	}
 	defer rows.Close()
 
-	var companies []models.Company
+	companies := []models.Company{}
 	for rows.Next() {
 		var c models.Company
 		if err := rows.Scan(
@@ -204,7 +204,7 @@ func (s *AdminService) ListTags(ctx context.Context, category *string) ([]models
 	}
 	defer rows.Close()
 
-	var tags []models.Tag
+	tags := []models.Tag{}
 	for rows.Next() {
 		var t models.Tag
 		if err := rows.Scan(&t.ID, &t.Name, &t.Category, &t.Active, &t.CreatedAt, &t.UpdatedAt); err != nil {
diff --git a/backend/internal/services/audit_service.go b/backend/internal/services/audit_service.go
index 84f8b25..1541d13 100644
--- a/backend/internal/services/audit_service.go
+++ b/backend/internal/services/audit_service.go
@@ -51,7 +51,7 @@ func (s *AuditService) ListLogins(ctx context.Context, limit int) ([]models.Logi
 	}
 	defer rows.Close()
 
-	var audits []models.LoginAudit
+	audits := []models.LoginAudit{}
 	for rows.Next() {
 		var entry models.LoginAudit
 		if err := rows.Scan(
diff --git a/backend/internal/services/job_service.go b/backend/internal/services/job_service.go
index 724fa39..1fb6042 100644
--- a/backend/internal/services/job_service.go
+++ b/backend/internal/services/job_service.go
@@ -204,7 +204,7 @@ func (s *JobService) GetJobs(filter dto.JobFilterQuery) ([]models.JobWithCompany
 	}
 	defer rows.Close()
 
-	var jobs []models.JobWithCompany
+	jobs := []models.JobWithCompany{}
 	for rows.Next() {
 		var j models.JobWithCompany
 		if err := rows.Scan(