// Copyright 2022 PingCAP, 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,
// See the License for the specific language governing permissions and
// limitations under the License.

package database

import (
	"os"

	"github.com/pingcap/log"
	"go.uber.org/zap"

	"github.com/pingcap-inc/compute-engine/pkg/database/dynamo"
	"github.com/pingcap-inc/compute-engine/pkg/database/model"
	"github.com/pingcap-inc/compute-engine/pkg/database/mysql"
)

func InitTaskModel() model.TaskModel {
	var m model.TaskModel
	var err error
	switch os.Getenv("MYSQL_DSN") {
	case "", "MYSQL_DSN_PLACEHOLDER":
		m, err = mysql.NewModel()
	default:
		m, err = dynamo.NewModel()
	}
	if err != nil {
		log.Error("init task model error", zap.Error(err))
		os.Exit(-1)
	}
	return m
}