// Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dbtx

import (
	"context"
	"database/sql"

	"github.com/jmoiron/sqlx"
)

// New returns new database Runner interface.
func New(db *sqlx.DB) AccessorTx {
	mx := getLocker(db)
	run := &runnerDB{
		db: sqlDB{db},
		mx: mx,
	}
	return run
}

// transactor is combines data access capabilities with transaction starting.
type transactor interface {
	Accessor
	startTx(ctx context.Context, opts *sql.TxOptions) (TransactionAccessor, error)
}

// sqlDB is a wrapper for the sqlx.DB that implements the transactor interface.
type sqlDB struct {
	*sqlx.DB
}

var _ transactor = (*sqlDB)(nil)

func (db sqlDB) startTx(ctx context.Context, opts *sql.TxOptions) (TransactionAccessor, error) {
	tx, err := db.DB.BeginTxx(ctx, opts)
	return tx, err
}