script con ajustes para utilizar la cuenta de servicio de google

firma_digital_personalizacion.py

@@ -21,9 +21,6 @@ for k in list(sys.modules.keys()):
 
 from googleapiclient.discovery import build
 from google.oauth2 import service_account
-from google.oauth2.credentials import Credentials
-from google_auth_oauthlib.flow import InstalledAppFlow
-from google.auth.transport.requests import Request as GRequest
 
 
 # -----------------------------------------------------------
@@ -37,39 +34,23 @@ def _load_json(path):
         return json.load(f)
 
 
-def get_services(credentials_json_path, token_json_path):
+def get_services(credentials_json_path, impersonated_user):
     info = _load_json(credentials_json_path)
+    if not isinstance(info, dict) or info.get("type") != "service_account":
+        raise RuntimeError("gdoc_sa_json2 debe apuntar a un JSON de cuenta de servicio.")
 
-    if isinstance(info, dict) and info.get("type") == "service_account":
+    impersonated_user = (impersonated_user or "").strip()
-        creds = service_account.Credentials.from_service_account_file(
+    if not impersonated_user:
-            credentials_json_path,
+        raise RuntimeError("Falta la variable gdoc_impersonated_user.")
-            scopes=SCOPES,
-        )
-        docs = build("docs", "v1", credentials=creds, cache_discovery=False)
-        drive = build("drive", "v3", credentials=creds, cache_discovery=False)
-        return docs, drive, "service_account"
-
-    creds = None
-    if os.path.exists(token_json_path):
-        creds = Credentials.from_authorized_user_file(token_json_path, SCOPES)
-
-    if (not creds) or (not creds.valid):
-        if creds and creds.expired and creds.refresh_token:
-            creds.refresh(GRequest())
-        else:
-            flow = InstalledAppFlow.from_client_secrets_file(credentials_json_path, SCOPES)
-            try:
-                creds = flow.run_local_server(port=0)
-            except Exception:
-                creds = flow.run_console()
-
-        os.makedirs(os.path.dirname(token_json_path), exist_ok=True)
-        with open(token_json_path, "w", encoding="utf-8") as f:
-            f.write(creds.to_json())
 
+    creds = service_account.Credentials.from_service_account_file(
+        credentials_json_path,
+        scopes=SCOPES,
+        subject=impersonated_user,
+    )
     docs = build("docs", "v1", credentials=creds, cache_discovery=False)
     drive = build("drive", "v3", credentials=creds, cache_discovery=False)
-    return docs, drive, "oauth"
+    return docs, drive, "service_account_impersonated"
 
 
 # -----------------------------------------------------------
@@ -313,24 +294,21 @@ try:
 
     _sv("gdoc_original_id", raw_id)
 
-    cred_path = _gvs("gdoc_sa_json", "")
+    cred_path = _gvs("gdoc_sa_json2", "")
     if cred_path == "":
-        raise RuntimeError("Falta la variable gdoc_sa_json.")
+        raise RuntimeError("Falta la variable gdoc_sa_json2.")
 
     if not os.path.isabs(cred_path):
         cred_path = os.path.join(base_dir, cred_path)
 
     if not os.path.exists(cred_path):
-        raise RuntimeError("No existe credentials.json: " + cred_path)
+        raise RuntimeError("No existe JSON de cuenta de servicio: " + cred_path)
 
-    token_path = _gvs("gdoc_token_json", "")
+    impersonated_user = _gvs("gdoc_impersonated_user", "")
-    if token_path == "":
-        token_path = os.path.join(base_dir, "credentials", "token_gdocs_drive.json")
-    if not os.path.isabs(token_path):
-        token_path = os.path.join(base_dir, token_path)
 
-    docs_service, drive_service, auth_mode = get_services(cred_path, token_path)
+    docs_service, drive_service, auth_mode = get_services(cred_path, impersonated_user)
     _sv("gdoc_auth_mode", auth_mode)
+    _sv("gdoc_impersonated_user_used", impersonated_user)
 
     doc_id, meta_file, converted = ensure_docs_api_compatible(drive_service, raw_id)
     _sv("gdoc_id", doc_id)
@@ -390,4 +368,4 @@ except Exception as e:
     print(error_msg)
     _sv("status_proceso", "ERROR")
     _sv("error_firma_digital", error_msg)
-    raise
+    raise