// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package memdb

import (
	"context"
	"testing"

	"github.com/ledgerwatch/erigon-lib/kv"
	"github.com/ledgerwatch/erigon-lib/kv/mdbx"
	"github.com/ledgerwatch/erigon-lib/log"
)

func New() kv.RwDB {
	logger := log.New() //TODO: move higher
	return mdbx.NewMDBX(logger).InMem().MustOpen()
}

func NewTestDB(t testing.TB) kv.RwDB {
	db := New()
	t.Cleanup(db.Close)
	return db
}

func NewTestTx(t testing.TB) (kv.RwDB, kv.RwTx) {
	db := New()
	t.Cleanup(db.Close)
	tx, err := db.BeginRw(context.Background()) //nolint
	if err != nil {
		t.Fatal(err)
	}
	switch tt := t.(type) {
	case *testing.T:
		if tt != nil {
			tt.Cleanup(tx.Rollback)
		}
	}
	return db, tx
}