package store

import (
	"io/ioutil"
	"os"
	"path"
	"testing"

	"github.com/stretchr/testify/assert"
)

const testDir = "/tmp/testFilesystemStore/"

func TestNewFilesystemStore(t *testing.T) {
	_, err := NewFilesystemStore(testDir, "metadata", "json", "targets")
	assert.Nil(t, err, "Initializing FilesystemStore returned unexpected error: %v", err)
	defer os.RemoveAll(testDir)

	info, err := os.Stat(path.Join(testDir, "metadata"))
	assert.Nil(t, err, "Error attempting to stat metadata dir: %v", err)
	assert.NotNil(t, info, "Nil FileInfo from stat on metadata dir")
	assert.True(t, 0700&info.Mode() != 0, "Metadata directory is not writable")

	info, err = os.Stat(path.Join(testDir, "targets"))
	assert.Nil(t, err, "Error attempting to stat targets dir: %v", err)
	assert.NotNil(t, info, "Nil FileInfo from stat on targets dir")
	assert.True(t, 0700&info.Mode() != 0, "Targets directory is not writable")
}

func TestSetMeta(t *testing.T) {
	s, err := NewFilesystemStore(testDir, "metadata", "json", "targets")
	assert.Nil(t, err, "Initializing FilesystemStore returned unexpected error: %v", err)
	defer os.RemoveAll(testDir)

	testContent := []byte("test data")

	err = s.SetMeta("testMeta", testContent)
	assert.Nil(t, err, "SetMeta returned unexpected error: %v", err)

	content, err := ioutil.ReadFile(path.Join(testDir, "metadata", "testMeta.json"))
	assert.Nil(t, err, "Error reading file: %v", err)
	assert.Equal(t, testContent, content, "Content written to file was corrupted.")
}

func TestGetMeta(t *testing.T) {
	s, err := NewFilesystemStore(testDir, "metadata", "json", "targets")
	assert.Nil(t, err, "Initializing FilesystemStore returned unexpected error: %v", err)
	defer os.RemoveAll(testDir)

	testContent := []byte("test data")

	ioutil.WriteFile(path.Join(testDir, "metadata", "testMeta.json"), testContent, 0600)

	content, err := s.GetMeta("testMeta", int64(len(testContent)))
	assert.Nil(t, err, "GetMeta returned unexpected error: %v", err)

	assert.Equal(t, testContent, content, "Content read from file was corrupted.")
}