package writecachebadger

import (
	"path/filepath"
	"sync/atomic"
	"testing"
	"time"

	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache/writecachetest"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
	"github.com/dgraph-io/badger/v4"
	"github.com/stretchr/testify/require"
	"go.uber.org/zap"
)

func TestFlush(t *testing.T) {
	testlogger := test.NewLogger(t, true)

	createCacheFn := func(t *testing.T, smallSize uint64, mb *meta.DB, bs writecache.MainStorage, opts ...Option) writecache.Cache {
		return New(
			append([]Option{
				WithLogger(test.NewLogger(t, true)),
				WithPath(filepath.Join(t.TempDir(), "writecache")),
				WithMetabase(mb),
				WithBlobstor(bs),
				WithGCInterval(1 * time.Second),
				WithDisableBackgroundFlush(),
			}, opts...)...)
	}

	errCountOpt := func() (Option, *atomic.Uint32) {
		cnt := &atomic.Uint32{}
		return WithReportErrorFunc(func(msg string, err error) {
			cnt.Add(1)
			testlogger.Warn(msg, zap.Uint32("error_count", cnt.Load()), zap.Error(err))
		}), cnt
	}

	failures := []writecachetest.TestFailureInjector[Option]{
		{
			Desc: "db, invalid address",
			InjectFn: func(t *testing.T, wc writecache.Cache) {
				c := wc.(*cache)
				obj := testutil.GenerateObject()
				data, err := obj.Marshal()
				require.NoError(t, err)
				require.NoError(t, c.db.Update(func(tx *badger.Txn) error {
					return tx.Set([]byte{1, 2, 3}, data)
				}))
			},
		},
		{
			Desc: "db, invalid object",
			InjectFn: func(t *testing.T, wc writecache.Cache) {
				c := wc.(*cache)
				key := addr2key(oidtest.Address())
				require.NoError(t, c.db.Update(func(tx *badger.Txn) error {
					return tx.Set(key[:], []byte{1, 2, 3})
				}))
			},
		},
	}

	writecachetest.TestFlush(t, createCacheFn, errCountOpt, failures...)
}