package cli //nolint:testpackage // shares runEntry and the hermetic config helpers

import (
	"fmt"
	"os"
	"path/filepath"
	"testing"

	"github.com/adrg/xdg"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TestEntrySnapshotCreateSkipsOwnFiles backs up a directory that holds
// vaultik's index and PID file beside one other file, with no exclude
// pattern set. The summary counts only the other file. See
// https://git.eeqj.de/sneak/vaultik/issues/421.
//
// Not parallel: it replaces os.Args, os.Stdout, os.Stderr and the xdg
// globals.
func TestEntrySnapshotCreateSkipsOwnFiles(t *testing.T) {
	for _, testCase := range []struct {
		name string
		// linked sets index_path to a symlink outside the backed-up
		// directory that points to the index inside it.
		linked bool
	}{
		{name: "index in the backed-up directory"},
		{name: "index_path links into the backed-up directory", linked: true},
	} {
		t.Run(testCase.name, func(t *testing.T) {
			dir := t.TempDir()
			configPath := filepath.Join(dir, "config.yml")
			sourceDir := filepath.Join(dir, "source")
			storeDir := filepath.Join(dir, "store")

			indexPath := filepath.Join(sourceDir, "index.sqlite")

			if testCase.linked {
				link := filepath.Join(dir, "index.sqlite")
				require.NoError(t, os.Symlink(indexPath, link))

				indexPath = link
			}

			contents := fmt.Sprintf(hermeticConfig,
				sourceDir, storeDir, indexPath)
			require.NoError(t,
				os.WriteFile(configPath, []byte(contents), configFileMode))
			require.NoError(t, os.Mkdir(storeDir, 0o750))
			require.NoError(t, os.Mkdir(sourceDir, 0o750))
			require.NoError(t, os.WriteFile(
				filepath.Join(sourceDir, "file.txt"), []byte("hello"), 0o600))

			// The PID file goes in a directory under XDG_DATA_HOME, which
			// xdg reads at package init.
			t.Setenv("XDG_DATA_HOME", filepath.Join(sourceDir, "data"))
			xdg.Reload()
			t.Cleanup(xdg.Reload)

			code, stdout, _ := runEntry(t,
				flagConfig, configPath, cmdSnapshot, cmdCreate)

			require.Equal(t, 0, code)
			assert.Contains(t, stdout,
				"Files: 1 examined, 1 backed up, 0 unchanged.")
		})
	}
}