Initial Python rewrite

src.bak/main/java/com/example/mapper/notification/ExternalNotRequestMapper.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.mapper.notification;
+
+import com.example.dto.dialogflow.notification.ExternalNotRequestDTO;
+import com.example.dto.dialogflow.base.DetectIntentRequestDTO;
+import com.example.dto.dialogflow.conversation.QueryInputDTO;
+import com.example.dto.dialogflow.conversation.QueryParamsDTO;
+import com.example.dto.dialogflow.conversation.TextInputDTO;
+
+
+import org.springframework.stereotype.Component;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Spring component for mapping an external notification request to a Dialogflow `DetectIntentRequestDTO`.
+ * This class takes a simplified `ExternalNotRequestDTO` and converts it into the structured
+ * DTO required for a Dialogflow API call, specifically for triggering a notification event.
+ * It ensures required parameters like the phone number are present and populates the
+ * request with event-specific details.
+ */
+@Component
+public class ExternalNotRequestMapper {
+    private static final String LANGUAGE_CODE = "es";
+    private static final String TELEPHONE_PARAM_NAME = "telefono";
+    private static final String NOTIFICATION_TEXT_PARAM = "notification_text";
+    private static final String NOTIFICATION_LABEL = "NOTIFICACION";
+    private static final String PREFIX_PO_PARAM = "notification_po_";
+
+
+
+    public DetectIntentRequestDTO map(ExternalNotRequestDTO request) {
+        Objects.requireNonNull(request, "NotificationRequestDTO cannot be null for mapping.");
+
+        if (request.phoneNumber() == null || request.phoneNumber().isEmpty()) {
+            throw new IllegalArgumentException("Phone numbers is required and cannot be empty in NotificationRequestDTO.");
+        }
+        String phoneNumber = request.phoneNumber();
+
+        Map<String, Object> parameters = new HashMap<>();
+        parameters.put(TELEPHONE_PARAM_NAME, phoneNumber);
+        parameters.put(NOTIFICATION_TEXT_PARAM, request.text());
+
+
+        if (request.hiddenParameters() != null && !request.hiddenParameters().isEmpty()) {
+            StringBuilder poBuilder = new StringBuilder();
+            request.hiddenParameters().forEach((key, value) -> {
+                parameters.put(PREFIX_PO_PARAM + key, value);
+                poBuilder.append(key).append(": ").append(value).append("\n");
+            });
+            parameters.put("po", poBuilder.toString());
+        }
+
+        TextInputDTO textInput = new TextInputDTO(NOTIFICATION_LABEL);
+        QueryInputDTO queryInput = new QueryInputDTO(textInput, null, LANGUAGE_CODE);
+
+
+        QueryParamsDTO queryParams = new QueryParamsDTO(parameters);
+
+        return new DetectIntentRequestDTO(queryInput, queryParams);
+    }
+}