feat(sla): persist applied sla on conversations

internal/handler/api/v1/conversation_handler_crud_test.go

@@ -82,6 +82,9 @@ func (s *ConversationCrudTestSuite) SetupSuite() {
 		&model.AccountUser{},
 		&model.Team{},
 		&model.TeamMember{},
+		&model.SlaPolicy{},
+		&model.AppliedSLA{},
+		&model.SlaEvent{},
 	)
 	s.Require().NoError(err)
 
@@ -95,6 +98,8 @@ func (s *ConversationCrudTestSuite) SetupSuite() {
 	teamRepo := repository.NewTeamRepo(db)
 	teamMemberRepo := repository.NewTeamMemberRepo(db)
 	conversationSvc := service.NewConversationService(convRepo, msgRepo, dispatcher, inboxMemberSvc, accountUserRepo, teamRepo, teamMemberRepo)
+	appliedSlaSvc := service.NewAppliedSlaService(repository.NewAppliedSlaRepo(db), repository.NewSlaEventRepo(db), repository.NewSlaPolicyRepo(db), convRepo)
+	conversationSvc.SetAppliedSlaService(appliedSlaSvc)
 	mockLLM := &mockConvCrudLLMProvider{}
 	messageSvc := service.NewMessageService(msgRepo, dispatcher, mockLLM)
 	handler := NewConversationHandler(conversationSvc, messageSvc)
@@ -163,6 +168,8 @@ func (s *ConversationCrudTestSuite) SetupTest() {
 }
 
 func (s *ConversationCrudTestSuite) TearDownTest() {
+	s.db.Exec("DELETE FROM sla_events")
+	s.db.Exec("DELETE FROM applied_slas")
 	s.db.Exec("DELETE FROM conversation_labels")
 	s.db.Exec("DELETE FROM conversations")
 	s.db.Exec("DELETE FROM contact_inboxes")
@@ -174,6 +181,7 @@ func (s *ConversationCrudTestSuite) TearDownTest() {
 	s.db.Exec("DELETE FROM accounts")
 	s.db.Exec("DELETE FROM teams")
 	s.db.Exec("DELETE FROM team_members")
+	s.db.Exec("DELETE FROM sla_policies")
 }
 
 func (s *ConversationCrudTestSuite) accountURL() string {
@@ -352,6 +360,44 @@ func (s *ConversationCrudTestSuite) TestUpdate_Success() {
 	assert.Equal(s.T(), "resolved", resp["status"])
 }
 
+func (s *ConversationCrudTestSuite) TestUpdate_WithSlaPolicyCreatesAppliedSlaPayload() {
+	policy := &model.SlaPolicy{
+		AccountID:                  s.testAccount.ID,
+		Name:                       "Gold SLA",
+		Description:                "Priority customers",
+		FirstResponseTimeThreshold: 15,
+		NextResponseTimeThreshold:  30,
+		ResolutionTimeThreshold:    120,
+	}
+	s.Require().NoError(s.db.Create(policy).Error)
+
+	body, _ := json.Marshal(map[string]interface{}{
+		"sla_policy_id": policy.ID,
+	})
+	w := httptest.NewRecorder()
+	req, _ := http.NewRequest("PUT", s.convURL(s.testConv.ID), bytes.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+	s.router.ServeHTTP(w, req)
+
+	assert.Equal(s.T(), http.StatusOK, w.Code)
+
+	var resp map[string]interface{}
+	err := json.Unmarshal(w.Body.Bytes(), &resp)
+	assert.NoError(s.T(), err)
+	assert.Equal(s.T(), float64(policy.ID), resp["sla_policy_id"])
+
+	applied, ok := resp["applied_sla"].(map[string]interface{})
+	s.Require().True(ok)
+	assert.Equal(s.T(), float64(policy.ID), applied["sla_id"])
+	assert.Equal(s.T(), "active", applied["sla_status"])
+	assert.Equal(s.T(), "Gold SLA", applied["sla_name"])
+	assert.Equal(s.T(), float64(15), applied["sla_first_response_time_threshold"])
+
+	var count int64
+	s.Require().NoError(s.db.Model(&model.AppliedSLA{}).Where("conversation_id = ?", s.testConv.ID).Count(&count).Error)
+	assert.Equal(s.T(), int64(1), count)
+}
+
 func (s *ConversationCrudTestSuite) TestUpdate_InvalidAccountID() {
 	body, _ := json.Marshal(map[string]interface{}{
 		"status": "resolved",