Implementing SQL version of roles interface

Signed-off-by: Ethan Wellenreiter <ewellenreiter@gmail.com>

backend/internal/storage/sql-roles.go

@@ -0,0 +1,39 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+)
+
+type SQLRolesStore struct {
+	db *sql.DB
+}
+
+func (s *SQLRolesStore) GetByName(ctx context.Context, name string) (*Role, error) {
+	ctx, cancel := context.WithTimeout(ctx, QueryTimeoutDuration)
+	defer cancel()
+
+	query := `SELECT id, name, description, level FROM roles WHERE name = $1`
+
+	role := &Role{}
+	err := s.db.QueryRowContext(ctx, query, name).Scan(&role.ID, &role.Name, &role.Description, &role.Level)
+	if err != nil {
+		return nil, err
+	}
+
+	return role, nil
+}
+func (s *SQLRolesStore) GetById(ctx context.Context, id int64) (*Role, error) {
+	ctx, cancel := context.WithTimeout(ctx, QueryTimeoutDuration)
+	defer cancel()
+
+	query := `SELECT id, name, description, level FROM roles WHERE id = $1`
+
+	role := &Role{}
+	err := s.db.QueryRowContext(ctx, query, id).Scan(&role.ID, &role.Name, &role.Description, &role.Level)
+	if err != nil {
+		return nil, err
+	}
+
+	return role, nil
+}