add model identities and restore httpx router

backend/internal/models/identity_test.go

@@ -0,0 +1,49 @@
+package models
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/glebarez/sqlite"
+	"github.com/stretchr/testify/require"
+	"gorm.io/gorm"
+)
+
+func TestBeforeCreateAssignsUUIDV7Identity(t *testing.T) {
+	database := newIdentityTestDB(t)
+	user := SenlinAgentUser{Email: "lead@example.com", DisplayName: "Lead", PasswordHash: "hash"}
+
+	require.NoError(t, database.Create(&user).Error)
+
+	require.NotEmpty(t, user.Identity)
+	require.Equal(t, byte('7'), user.Identity[14])
+}
+
+func TestBeforeCreateCopiesParentIdentitiesFromNumericIDs(t *testing.T) {
+	database := newIdentityTestDB(t)
+	user := SenlinAgentUser{Email: "lead@example.com", DisplayName: "Lead", PasswordHash: "hash"}
+	require.NoError(t, database.Create(&user).Error)
+	project := SenlinAgentProject{OwnerID: user.ID, Name: "Alpha"}
+	require.NoError(t, database.Create(&project).Error)
+	item := SenlinAgentInboxItem{ProjectID: project.ID, CreatedBy: user.ID, SourceType: "text"}
+	require.NoError(t, database.Create(&item).Error)
+
+	task := SenlinAgentTask{ProjectID: project.ID, CreatedBy: user.ID, SourceInboxItemID: &item.ID, Title: "Follow up"}
+
+	require.NoError(t, database.Create(&task).Error)
+
+	require.NotEmpty(t, project.Identity)
+	require.Equal(t, user.Identity, project.OwnerIdentity)
+	require.Equal(t, project.Identity, task.ProjectIdentity)
+	require.Equal(t, user.Identity, task.CreatedByIdentity)
+	require.NotNil(t, task.SourceInboxItemIdentity)
+	require.Equal(t, item.Identity, *task.SourceInboxItemIdentity)
+}
+
+func newIdentityTestDB(t *testing.T) *gorm.DB {
+	t.Helper()
+	database, err := gorm.Open(sqlite.Open(fmt.Sprintf("file:%s?mode=memory&cache=shared", t.Name())), &gorm.Config{})
+	require.NoError(t, err)
+	require.NoError(t, AutoMigrate(database))
+	return database
+}