package kv

import (
	"crypto/rand"
	"fmt"
	"math/big"
	"os"
	"path"
	"testing"

	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
	"github.com/prysmaticlabs/prysm/shared/testutil"
	"github.com/prysmaticlabs/prysm/shared/testutil/require"
)

// setupDB instantiates and returns a Store instance.
func setupDB(t testing.TB) *Store {
	randPath, err := rand.Int(rand.Reader, big.NewInt(1000000))
	require.NoError(t, err, "Could not generate random file path")
	p := path.Join(testutil.TempDir(), fmt.Sprintf("/%d", randPath))
	require.NoError(t, os.RemoveAll(p), "Failed to remove directory")
	db, err := NewKVStore(p, cache.NewStateSummaryCache())
	require.NoError(t, err, "Failed to instantiate DB")
	t.Cleanup(func() {
		require.NoError(t, db.Close(), "Failed to close database")
		require.NoError(t, os.RemoveAll(db.DatabasePath()), "Failed to remove directory")
	})
	return db
}