package blossom

import (
	"strings"
	"testing"
)

// TestIndexReopen pins the index record layout: an offset mistake here makes a
// relay panic when it opens a data directory that contains blobs.
func TestIndexReopen(t *testing.T) {
	dir := t.TempDir()
	s, err := Open(dir, 1<<20)
	if err != nil {
		t.Fatal(err)
	}
	hash := strings.Repeat("ab", 32)
	pub := strings.Repeat("cd", 32)
	b := &Blob{Hash: hash, PubKey: pub, Size: 1234, Type: "text/plain", Created: 1700000000}
	s.mu.Lock()
	s.putMem(b)
	err = s.appendRecord('p', b)
	s.mu.Unlock()
	if err != nil {
		t.Fatal(err)
	}
	if err := s.Close(); err != nil {
		t.Fatal(err)
	}

	s2, err := Open(dir, 1<<20)
	if err != nil {
		t.Fatal(err)
	}
	got := s2.blobs[hash]
	if got == nil {
		t.Fatal("blob missing after reopen")
	}
	if got.Size != b.Size || got.Created != b.Created || got.Type != b.Type || got.PubKey != pub {
		t.Fatalf("blob metadata mismatch: %+v", got)
	}
	if len(s2.byPub[pub]) != 1 {
		t.Fatal("pubkey index not rebuilt")
	}

	s2.mu.Lock()
	s2.delMem(hash)
	err = s2.appendRecord('d', b)
	s2.mu.Unlock()
	if err != nil {
		t.Fatal(err)
	}
	s2.Close()

	s3, err := Open(dir, 1<<20)
	if err != nil {
		t.Fatal(err)
	}
	defer s3.Close()
	if s3.blobs[hash] != nil {
		t.Fatal("deleted blob returned after reopen")
	}
}