[ADD] CLAUDE AI, Y RETORNA ENLACE DE DRIVE

CLAUDE.md

+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Build & Run
+
+```bash
+# Build WAR artifact
+./mvnw clean package -DskipTests
+
+# Run locally (port 8082)
+./mvnw spring-boot:run
+
+# Run a specific test
+./mvnw test -Dtest=AppApplicationTests
+```
+
+The artifact name is `trismegisto-services.war`. It is deployed to WildFly/JBoss in production (see `src/main/WEB-INF/jboss-web.xml`).
+
+## Architecture Overview
+
+This is a Spring Boot 2.7.14 (Java 8) utility microservice that exposes several independent REST APIs. There is no persistent application database at startup — `DataSourceAutoConfiguration` is excluded. Database connections are established **per-request** via a special `Database` HTTP header.
+
+### Request-scoped database connection
+
+`JWTokenFilter` reads the `Database` header on every request. This header must contain a JWT token generated by `POST /token/database` that encodes `{db, url, user, password}`. The filter decodes it and stores a `JdbcTemplate` in `threadLocalSingleton` (a `ThreadLocal` wrapper). `RoutineSql` then picks up that `JdbcTemplate` to execute MySQL stored procedures or PostgreSQL functions via `POST /api/public/routine`.
+
+### Security model
+
+- Routes matching `*/public/*` are open.
+- Routes matching `*/private/*` require `ADMIN` or `USER` authority.
+- Routes matching `*/service/*` require `SERVICE` authority.
+- `/security/**` requires `ADMIN`.
+- Auth is stateless JWT (Bearer) or HTTP Basic. Both are validated in `JWTokenFilter`.
+- Users are **hardcoded in-memory** in `UserRepository` (only `admin/admin` exists by default). There is no user table.
+- Two JWT secrets in `application.properties`: `app.jwtSecret` (standard tokens) and `app.jwtSecret2` (one-life tokens). One-life tokens are tracked in `tokenSingleton` (an in-memory `JSONArray`) and can be consumed once; expired/consumed tokens are purged hourly via `@Scheduled`.
+
+### REST endpoints
+
+| Prefix | Class | Purpose |
+|--------|-------|---------|
+| `/token` | `tokenRest` | JWT auth, one-life tokens, data tokenization/detokenization |
+| `/pdf/public/html` | `pdfRest` | HTML → PDF via iText 8 html2pdf; supports background image (URL or base64) |
+| `/excel/public/generate` | `excelRest` | JSON → XLSX via Apache POI |
+| `/gmail/public/generate` | `emailRest` | Send HTML email via Gmail API |
+| `/drive` | `driveRest` | Upload/download files on Google Drive; supports year-based subfolder |
+| `/api/public/routine` | `routineRest` | Call MySQL stored procedures or PostgreSQL functions |
+| `/console/public/command` | `consoleRest` | Execute shell commands on the server (with optional sudo) |
+| `/bbva` | `bbvaRest`, `bbvaWebHook` | BBVA payment gateway integration |
+
+### Google integration
+
+`GoogleConfig` handles OAuth2 token refresh for Drive and Gmail. Credentials are loaded from classpath resources:
+
+- `src/main/resources/tokens/oAuth2_planilla.json` — Drive + Gmail for `trismegisto.planilla@sacooliveros.edu.pe`
+- `src/main/resources/tokens/oAuth2_logistica.json` — Gmail for `trismegisto.logistica@sacooliveros.edu.pe`
+
+Each JSON file must contain `client_id`, `client_secret`, `gmail_refresh_token`, and `drive_refresh_token`.
+
+### PDF generation
+
+`PDFService.generatePdf(html, backgroundUrl)` uses iText 8 `HtmlConverter`. The background is injected as a CSS `@page` rule appended to the HTML. Fonts are loaded from `src/main/resources/fonts/` (Roboto-Regular, Arial). The endpoint accepts JSON body or `multipart/form-data`.
+
+### Singletons
+
+- `tokenSingleton` — in-memory one-life token store, Spring `@Component`, scheduled cleanup every hour.
+- `threadLocalSingleton` — per-thread `JdbcTemplate` holder; set by `JWTokenFilter`, consumed by `RoutineSql`.
+- `bbvaSingleton` — BBVA session state.

src/main/java/web/multitask/trismegistoservices/services/google/DriveService.java

@@ -100,17 +100,21 @@ public class DriveService implements IDriveService {
     @Override
     public ResponseEntity<?> getFile(String file_id, Boolean base64) {
         try {
-            File file = googleConfig.getDrive().files().get(file_id).execute();
+            File file = googleConfig.getDrive().files().get(file_id).setFields("name,mimeType").execute();
             InputStream inputStream = googleConfig.getDrive().files().get(file_id).executeMediaAsInputStream();
-            String uudi = java.util.UUID.randomUUID().toString();
-            String nameFile;
-            boolean isHasExtension = false;
-            try {
-                nameFile = System.getProperty("java.io.tmpdir") + "/" + uudi + "." + file.getName().split("\\.")[1];
-                isHasExtension = true;
-            } catch (Exception e) {
-                nameFile = System.getProperty("java.io.tmpdir") + "/" + uudi + ".pdf";
+            String uuid = java.util.UUID.randomUUID().toString();
+            String mimeType = file.getMimeType() != null ? file.getMimeType() : "";
+            String fileName = file.getName();
+
+            String extension;
+            if (fileName.contains(".")) {
+                extension = fileName.substring(fileName.lastIndexOf('.') + 1);
+            } else {
+                extension = getExtensionFromMimeType(mimeType);
+                fileName = fileName + "." + extension;
             }
+
+            String nameFile = System.getProperty("java.io.tmpdir") + "/" + uuid + "." + extension;
             java.io.File tempFile = new java.io.File(nameFile);
             try (FileOutputStream fos = new FileOutputStream(tempFile)) {
                 byte[] buffer = new byte[1024];
@@ -119,21 +123,29 @@ public class DriveService implements IDriveService {
                     fos.write(buffer, 0, bytesRead);
                 }
             }
+
+            String viewUrl = getViewUrl(file_id, mimeType);
+
             if (base64) {
                 String base64String = commonUtils.fileToBase64(tempFile);
-                tempFile.delete(); // Eliminación inmediata en modo Base64
-                return ResponseEntity.ok().body(
-                        new JSONObject()
-                                .put("base64", base64String)
-                                .put("file_name", file.getName() + (isHasExtension ? "" : ".pdf"))
-                                .put("status", true)
-                                .put("message", "OK").toMap());
+                tempFile.delete();
+                JSONObject responseBody = new JSONObject()
+                        .put("base64", base64String)
+                        .put("file_name", fileName)
+                        .put("status", true)
+                        .put("message", "OK");
+                if (viewUrl != null) {
+                    responseBody.put("view_url", viewUrl);
+                }
+                return ResponseEntity.ok().body(responseBody.toMap());
             } else {
                 Resource resource = commonUtils.fileToResource(tempFile);
                 HttpHeaders headers = new HttpHeaders();
-
-                headers.set(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + file.getName() + "\"");
+                headers.set(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + fileName + "\"");
                 headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
+                if (viewUrl != null) {
+                    headers.set("X-View-URL", viewUrl);
+                }
 
                 CompletableFuture.runAsync(() -> {
                     try {
@@ -156,6 +168,47 @@ public class DriveService implements IDriveService {
         }
     }
 
+    private String getExtensionFromMimeType(String mimeType) {
+        switch (mimeType) {
+            case "application/pdf": return "pdf";
+            case "application/vnd.openxmlformats-officedocument.wordprocessingml.document": return "docx";
+            case "application/msword": return "doc";
+            case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet": return "xlsx";
+            case "application/vnd.ms-excel": return "xls";
+            case "application/vnd.openxmlformats-officedocument.presentationml.presentation": return "pptx";
+            case "application/vnd.ms-powerpoint": return "ppt";
+            case "application/vnd.google-apps.document": return "docx";
+            case "application/vnd.google-apps.spreadsheet": return "xlsx";
+            case "application/vnd.google-apps.presentation": return "pptx";
+            case "image/jpeg": return "jpg";
+            case "image/png": return "png";
+            case "image/gif": return "gif";
+            case "text/plain": return "txt";
+            default: return "bin";
+        }
+    }
+
+    private String getViewUrl(String fileId, String mimeType) {
+        switch (mimeType) {
+            case "application/vnd.openxmlformats-officedocument.wordprocessingml.document":
+            case "application/msword":
+            case "application/vnd.google-apps.document":
+                return "https://docs.google.com/document/d/" + fileId + "/edit";
+            case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":
+            case "application/vnd.ms-excel":
+            case "application/vnd.google-apps.spreadsheet":
+                return "https://docs.google.com/spreadsheets/d/" + fileId + "/edit";
+            case "application/vnd.openxmlformats-officedocument.presentationml.presentation":
+            case "application/vnd.ms-powerpoint":
+            case "application/vnd.google-apps.presentation":
+                return "https://docs.google.com/presentation/d/" + fileId + "/edit";
+            case "application/pdf":
+                return "https://drive.google.com/file/d/" + fileId + "/view";
+            default:
+                return null;
+        }
+    }
+
     @Override
     public byte[] getZip(JSONArray reqArrFiles) {
         String tempDirPath = System.getProperty("java.io.tmpdir") + "/" + java.util.UUID.randomUUID();