Extract message cache into message/ package with model/ types

Move message cache from server/message_cache.go into a dedicated
message/ package with Store interface, SQLite and PostgreSQL
implementations. Extract shared types into model/ package.

message/store_postgres_test.go

@@ -0,0 +1,120 @@
+package message_test
+
+import (
+	"database/sql"
+	"fmt"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"heckel.io/ntfy/v2/message"
+	"heckel.io/ntfy/v2/util"
+)
+
+func newTestPostgresStore(t *testing.T) message.Store {
+	dsn := os.Getenv("NTFY_TEST_DATABASE_URL")
+	if dsn == "" {
+		t.Skip("NTFY_TEST_DATABASE_URL not set, skipping PostgreSQL tests")
+	}
+	// Create a unique schema for this test
+	schema := fmt.Sprintf("test_%s", util.RandomString(10))
+	setupDB, err := sql.Open("pgx", dsn)
+	require.Nil(t, err)
+	_, err = setupDB.Exec(fmt.Sprintf("CREATE SCHEMA %s", schema))
+	require.Nil(t, err)
+	require.Nil(t, setupDB.Close())
+	// Open store with search_path set to the new schema
+	u, err := url.Parse(dsn)
+	require.Nil(t, err)
+	q := u.Query()
+	q.Set("search_path", schema)
+	u.RawQuery = q.Encode()
+	store, err := message.NewPostgresStore(u.String(), 0, 0)
+	require.Nil(t, err)
+	t.Cleanup(func() {
+		store.Close()
+		cleanDB, err := sql.Open("pgx", dsn)
+		if err == nil {
+			cleanDB.Exec(fmt.Sprintf("DROP SCHEMA %s CASCADE", schema))
+			cleanDB.Close()
+		}
+	})
+	return store
+}
+
+func TestPostgresStore_Messages(t *testing.T) {
+	testCacheMessages(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessagesLock(t *testing.T) {
+	testCacheMessagesLock(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessagesScheduled(t *testing.T) {
+	testCacheMessagesScheduled(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_Topics(t *testing.T) {
+	testCacheTopics(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessagesTagsPrioAndTitle(t *testing.T) {
+	testCacheMessagesTagsPrioAndTitle(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessagesSinceID(t *testing.T) {
+	testCacheMessagesSinceID(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_Prune(t *testing.T) {
+	testCachePrune(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_Attachments(t *testing.T) {
+	testCacheAttachments(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_AttachmentsExpired(t *testing.T) {
+	testCacheAttachmentsExpired(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_Sender(t *testing.T) {
+	testSender(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_DeleteScheduledBySequenceID(t *testing.T) {
+	testDeleteScheduledBySequenceID(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessageByID(t *testing.T) {
+	testMessageByID(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MarkPublished(t *testing.T) {
+	testMarkPublished(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_ExpireMessages(t *testing.T) {
+	testExpireMessages(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MarkAttachmentsDeleted(t *testing.T) {
+	testMarkAttachmentsDeleted(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_Stats(t *testing.T) {
+	testStats(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_AddMessages(t *testing.T) {
+	testAddMessages(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessagesDue(t *testing.T) {
+	testMessagesDue(t, newTestPostgresStore(t))
+}
+
+func TestPostgresStore_MessageFieldRoundTrip(t *testing.T) {
+	testMessageFieldRoundTrip(t, newTestPostgresStore(t))
+}