skeleton added

gates/storage/admin.go

@@ -0,0 +1,42 @@
+package storage
+
+import (
+	"context"
+	"database/sql"
+
+	"tgVideoCall/domain/admin/models"
+
+	sq "github.com/Masterminds/squirrel"
+)
+
+// Пытается получить админа по userID
+func (p *DB) GetAdmin(ctx context.Context, userID int) (models.Admin, error) {
+	const op = "gates.postgres.GetAdmin"
+	p.log.Debug(op, "Starting retrieving admin, for user: ", userID)
+
+	query := p.sq.Select("user_id", "role").
+		From("admins").
+		Where(sq.Eq{"user_id": userID})
+
+	qry, args, err := query.ToSql()
+	p.log.Debug(op, "Building query: ", qry, "args: ", args)
+	if err != nil {
+		p.log.Error(op, "Error building query: ", err)
+		return models.Admin{}, err
+	}
+
+	var result models.Admin
+	err = p.db.QueryRowxContext(ctx, qry, args...).StructScan(&result)
+
+	if err == sql.ErrNoRows {
+		p.log.Debug(op, "Admin does not exist, for user: ", userID)
+		return models.Admin{}, models.ErrNotAdmin
+	}
+	if err != nil {
+		p.log.Error(op, "Error retrieving admin: ", err)
+		return models.Admin{}, err
+	}
+
+	p.log.Debug(op, "Successfully retrieved admin for user: ", userID)
+	return result, nil
+}