Added isProjectManager function to db.go and corresponding test to db_test.go

backend/internal/database/db.go

@@ -35,6 +35,7 @@ type Database interface {
 	GetWeeklyReportsUser(username string, projectname string) ([]types.WeeklyReportList, error)
 	SignWeeklyReport(reportId int, projectManagerId int) error
 	IsSiteAdmin(username string) (bool, error)
+	IsProjectManager(username string, projectname string) (bool, error)
 }
 
 // This struct is a wrapper type that holds the database connection
@@ -433,6 +434,27 @@ func (d *Db) GetWeeklyReportsUser(username string, projectName string) ([]types.
 	return reports, nil
 }
 
+// IsProjectManager checks if a given username is a project manager for the specified project
+func (d *Db) IsProjectManager(username string, projectname string) (bool, error) {
+	// Define the SQL query to check if the user is a project manager for the project
+	query := `
+        SELECT COUNT(*) FROM user_roles 
+        JOIN users ON user_roles.user_id = users.id 
+        JOIN projects ON user_roles.project_id = projects.id 
+        WHERE users.username = ? AND projects.name = ? AND user_roles.p_role = 'project_manager'
+    `
+
+	// Execute the query
+	var count int
+	err := d.Get(&count, query, username, projectname)
+	if err != nil {
+		return false, err
+	}
+
+	// If count is greater than 0, the user is a project manager for the project
+	return count > 0, nil
+}
+
 // MigrateSampleData applies sample data to the database.
 func (d *Db) MigrateSampleData() error {
 	// Insert sample data

backend/internal/database/db_test.go

@@ -602,6 +602,58 @@ func TestGetWeeklyReportsUser(t *testing.T) {
 	if len(reports) != 2 {
 		t.Errorf("Expected 1 report, got %d", len(reports))
 	}
-
-	// You can add further checks here if needed
+}
+
+func TestIsProjectManager(t *testing.T) {
+	db, err := setupState()
+	if err != nil {
+		t.Error("setupState failed:", err)
+	}
+
+	// Add a project manager
+	err = db.AddUser("projectManager", "password")
+	if err != nil {
+		t.Error("AddUser failed:", err)
+	}
+
+	// Add a regular user
+	err = db.AddUser("testuser", "password")
+	if err != nil {
+		t.Error("AddUser failed:", err)
+	}
+
+	// Add project
+	err = db.AddProject("testproject", "description", "projectManager")
+	if err != nil {
+		t.Error("AddProject failed:", err)
+	}
+
+	// Add both regular users as members to the project
+	err = db.AddUserToProject("testuser", "testproject", "member")
+	if err != nil {
+		t.Error("AddUserToProject failed:", err)
+	}
+
+	err = db.AddUserToProject("projectManager", "testproject", "project_manager")
+	if err != nil {
+		t.Error("AddUserToProject failed:", err)
+	}
+
+	// Check if the regular user is not a project manager
+	isManager, err := db.IsProjectManager("testuser", "testproject")
+	if err != nil {
+		t.Error("IsProjectManager failed:", err)
+	}
+	if isManager {
+		t.Error("Expected testuser not to be a project manager, but it is.")
+	}
+
+	// Check if the project manager is indeed a project manager
+	isManager, err = db.IsProjectManager("projectManager", "testproject")
+	if err != nil {
+		t.Error("IsProjectManager failed:", err)
+	}
+	if !isManager {
+		t.Error("Expected projectManager to be a project manager, but it's not.")
+	}
 }