package store_test

import (
	"context"
	"fmt"
	"github.com/chrislusf/seaweedfs/weed/filer"
	"github.com/chrislusf/seaweedfs/weed/util"
	"github.com/stretchr/testify/assert"
	"os"
	"testing"
)

func TestFilerStore(t *testing.T, store filer.FilerStore) {
	ctx := context.Background()

	store.InsertEntry(ctx, makeEntry(util.FullPath("/"), true))
	store.InsertEntry(ctx, makeEntry(util.FullPath("/a"), true))
	store.InsertEntry(ctx, makeEntry(util.FullPath("/a/b"), true))
	store.InsertEntry(ctx, makeEntry(util.FullPath("/a/b/c"), true))
	for i := 0; i < 2000; i++ {
		store.InsertEntry(ctx, makeEntry(util.FullPath(fmt.Sprintf("/a/b/c/f%05d", i)), false))
	}

	{
		var counter int
		lastFileName, err := store.ListDirectoryEntries(ctx, util.FullPath("/a/b/c"), "", false, 3, func(entry *filer.Entry) bool {
			counter++
			return true
		})
		assert.Nil(t, err, "list directory")
		assert.Equal(t, 3, counter, "directory list counter")
		assert.Equal(t, "f00003", lastFileName, "directory list last file")
		lastFileName, err = store.ListDirectoryEntries(ctx, util.FullPath("/a/b/c"), lastFileName, false, 1024, func(entry *filer.Entry) bool {
			counter++
			return true
		})
		assert.Nil(t, err, "list directory")
		assert.Equal(t, 1027, counter, "directory list counter")
		assert.Equal(t, "f01027", lastFileName, "directory list last file")
	}

}

func makeEntry(fullPath util.FullPath, isDirectory bool) *filer.Entry {
	var mode os.FileMode
	if isDirectory {
		mode = os.ModeDir
	}
	return &filer.Entry{
		FullPath: fullPath,
		Attr: filer.Attr{
			Mode: mode,
		},
	}
}