fix: correct Telegram update/keyboard models and harden env parsing

tgapi/types_test.go

@@ -0,0 +1,69 @@
+package tgapi
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+)
+
+func TestUpdateDeletedBusinessMessagesUnmarshalSetsAlias(t *testing.T) {
+	var update Update
+	err := json.Unmarshal([]byte(`{
+		"update_id": 1,
+		"deleted_business_messages": {
+			"business_connection_id": "conn",
+			"chat": {"id": 42, "type": "private"},
+			"message_ids": [3, 5]
+		}
+	}`), &update)
+	if err != nil {
+		t.Fatalf("Unmarshal returned error: %v", err)
+	}
+
+	if update.DeletedBusinessMessages == nil {
+		t.Fatal("expected DeletedBusinessMessages to be populated")
+	}
+	if update.DeletedBusinessMessage == nil {
+		t.Fatal("expected deprecated DeletedBusinessMessage alias to be populated")
+	}
+	if update.DeletedBusinessMessages != update.DeletedBusinessMessage {
+		t.Fatal("expected deleted business message fields to share the same payload")
+	}
+	if got := update.DeletedBusinessMessages.MessageIDs; len(got) != 2 || got[0] != 3 || got[1] != 5 {
+		t.Fatalf("unexpected message ids: %v", got)
+	}
+}
+
+func TestUpdateMarshalUsesCanonicalDeletedBusinessMessagesField(t *testing.T) {
+	update := Update{
+		UpdateID: 1,
+		DeletedBusinessMessage: &BusinessMessagesDeleted{
+			BusinessConnectionID: "conn",
+			Chat:                 Chat{ID: 42, Type: string(ChatTypePrivate)},
+			MessageIDs:           []int{7},
+		},
+	}
+
+	data, err := json.Marshal(update)
+	if err != nil {
+		t.Fatalf("Marshal returned error: %v", err)
+	}
+
+	got := string(data)
+	if !strings.Contains(got, `"deleted_business_messages"`) {
+		t.Fatalf("expected canonical deleted_business_messages field, got %s", got)
+	}
+	if strings.Contains(got, `"deleted_business_message"`) {
+		t.Fatalf("unexpected singular deleted_business_message field, got %s", got)
+	}
+}
+
+func TestUpdateShippingQueryIsNilWhenAbsent(t *testing.T) {
+	var update Update
+	if err := json.Unmarshal([]byte(`{"update_id":1}`), &update); err != nil {
+		t.Fatalf("Unmarshal returned error: %v", err)
+	}
+	if update.ShippingQuery != nil {
+		t.Fatalf("expected ShippingQuery to be nil, got %+v", update.ShippingQuery)
+	}
+}