Initial Python rewrite

src.bak/main/java/com/example/mapper/conversation/FirestoreConversationMapper.java

@@ -0,0 +1,53 @@
+/*
+ * 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.conversation;
+
+import com.example.dto.dialogflow.conversation.ConversationSessionDTO;
+import com.google.cloud.Timestamp;
+import com.google.cloud.firestore.DocumentSnapshot;
+import org.springframework.stereotype.Component;
+
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Map;
+
+@Component
+public class FirestoreConversationMapper {
+
+    public ConversationSessionDTO mapFirestoreDocumentToConversationSessionDTO(DocumentSnapshot document) {
+        if (document == null || !document.exists()) {
+            return null;
+        }
+
+        Timestamp createdAtTimestamp = document.getTimestamp("fechaCreacion");
+        Timestamp lastModifiedTimestamp = document.getTimestamp("ultimaActualizacion");
+
+        Instant createdAt = (createdAtTimestamp != null) ? createdAtTimestamp.toDate().toInstant() : null;
+        Instant lastModified = (lastModifiedTimestamp != null) ? lastModifiedTimestamp.toDate().toInstant() : null;
+
+        return new ConversationSessionDTO(
+                document.getString("sessionId"),
+                document.getString("userId"),
+                document.getString("telefono"),
+                createdAt,
+                lastModified,
+                document.getString("ultimoMensaje"),
+                document.getString("pantallaContexto")
+        );
+    }
+
+    public Map<String, Object> createSessionMap(ConversationSessionDTO session) {
+        Map<String, Object> sessionMap = new HashMap<>();
+        sessionMap.put("sessionId", session.sessionId());
+        sessionMap.put("userId", session.userId());
+        sessionMap.put("telefono", session.telefono());
+        sessionMap.put("fechaCreacion", session.createdAt());
+        sessionMap.put("ultimaActualizacion", session.lastModified());
+        sessionMap.put("ultimoMensaje", session.lastMessage());
+        sessionMap.put("pantallaContexto", session.pantallaContexto());
+        return sessionMap;
+    }
+}