package api_test

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

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

	"github.com/mathiasbq/hyperguild/ingestion/internal/api"
)

// hyperguild#178: an unreadable directory under wiki/ made the link check
// fail and brain_write refuse the note, losing the learning. The note is now
// written with its links as given.
func TestWriteNoteKeepsTheLearningWhenTheLinkCheckCannotIndex(t *testing.T) {
	if os.Geteuid() == 0 {
		t.Skip("root ignores directory permissions")
	}
	brain := t.TempDir()
	require.NoError(t, os.MkdirAll(filepath.Join(brain, "wiki", "w", "facts"), 0o755))
	require.NoError(t, os.WriteFile(filepath.Join(brain, "wiki", "w", "facts", "real.md"), []byte("x"), 0o644))
	locked := filepath.Join(brain, "wiki", "other", "locked")
	require.NoError(t, os.MkdirAll(locked, 0o755))
	require.NoError(t, os.Chmod(locked, 0o000))
	t.Cleanup(func() { _ = os.Chmod(locked, 0o755) })

	rel, err := api.WriteNote(brain, api.WriteNoteOptions{Wing: "w", Hall: "facts", Filename: "n", Content: "learning [[real]] and [[gone]]"})
	require.NoError(t, err)
	got, err := os.ReadFile(filepath.Join(brain, filepath.FromSlash(rel)))
	require.NoError(t, err)
	assert.Contains(t, string(got), "[[gone]]", "links kept as given when the index is partial")
}