ahora se procesa de inicio a fin correo por correo
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import requests
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import urllib3
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import os
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import json
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from typing import Optional, Dict, Any
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from dotenv import load_dotenv
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# ============================================================================
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# CONFIGURACIÓN
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# ============================================================================
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urllib3.disable_warnings()
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load_dotenv(dotenv_path=".env.dev")
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SAPB1_URL = os.getenv("SAP_B1_URL", "")
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SAPB1_USER = os.getenv("SAP_B1_USER", "")
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SAPB1_PASSWORD = os.getenv("SAP_B1_PASSWORD", "")
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SAPB1_COMPANY = os.getenv("SAP_B1_COMPANY", "")
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SAPB1_TIMEOUT = float(os.getenv("SAP_B1_TIMEOUT", 15.0))
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SAPB1_VERIFY_SSL = os.getenv("SAP_B1_VERIFY_SSL", "False").lower() == "true"
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# Almacenamiento global de sesión
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_sap_session: dict = {"headers": None, "b1session": None, "routeid": None}
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# ============================================================================
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# LOGIN
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# ============================================================================
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def login() -> dict:
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payload = {
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"CompanyDB": SAPB1_COMPANY,
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"UserName": SAPB1_USER,
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"Password": SAPB1_PASSWORD,
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}
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print("🔐 Iniciando sesión en SAP B1 Service Layer...")
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resp = requests.post(
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f"{SAPB1_URL}/Login",
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json=payload,
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timeout=SAPB1_TIMEOUT,
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verify=SAPB1_VERIFY_SSL,
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)
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if resp.status_code != 200:
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raise ConnectionError(
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f"Login fallido: HTTP {resp.status_code} - {resp.text}"
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)
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data = resp.json()
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b1session = data["SessionId"]
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routeid = resp.cookies.get("ROUTEID", "")
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headers = {"Cookie": f"B1SESSION={b1session}; ROUTEID={routeid}"}
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_sap_session.update({"headers": headers, "b1session": b1session, "routeid": routeid})
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print(f"✅ Sesión SAP B1 establecida (B1SESSION: {b1session[:10]}...)")
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return headers
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# ============================================================================
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# LOGOUT
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# ============================================================================
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def logout() -> None:
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if not _sap_session["b1session"]:
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print("⚠️ No hay sesión activa para cerrar.")
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return
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print("🔓 Cerrando sesión SAP B1...")
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try:
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resp = requests.post(
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f"{SAPB1_URL}/Logout",
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headers=_sap_session["headers"],
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timeout=SAPB1_TIMEOUT,
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verify=SAPB1_VERIFY_SSL,
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)
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if resp.status_code == 200:
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print("✅ Sesión SAP B1 cerrada correctamente.")
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else:
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print(f"⚠️ Logout respondió HTTP {resp.status_code}")
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except Exception as exc:
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print(f"❌ Error al cerrar sesión: {exc}")
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finally:
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_sap_session.update({"headers": None, "b1session": None, "routeid": None})
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# ============================================================================
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# SESIÓN (interna - lazy login)
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# ============================================================================
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def _ensure_session() -> dict:
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if _sap_session["headers"]:
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return _sap_session["headers"]
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return login()
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# ============================================================================
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# LOGGING DE RESPUESTA
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# ============================================================================
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def _log_response(method: str, endpoint: str, response: requests.Response, payload: Any = None) -> None:
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log_line = (
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f" ├── [{method}] {endpoint} → {response.status_code}"
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f" ({len(response.content)} bytes)"
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)
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if response.status_code >= 400:
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print("⚠️ %s - %s", log_line, response.text[:300])
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else:
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print(log_line)
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# ============================================================================
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# PROXY CENTRALIZADO
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# ============================================================================
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def forward_to_sapb1(
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method: str,
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endpoint_path: str,
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json_data: Optional[Dict[str, Any]] = None,
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params: Optional[Dict[str, Any]] = None,
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extra_headers: Optional[Dict[str, str]] = None
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) -> requests.Response:
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if not method or not endpoint_path:
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raise ValueError("method y endpoint_path son requeridos")
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method = method.upper()
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headers = _ensure_session()
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url = f"{SAPB1_URL}/{endpoint_path}"
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req_headers = {
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"Content-Type": "application/json",
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"Accept": "application/json",
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**_sap_session["headers"],
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}
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if extra_headers:
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req_headers.update(extra_headers)
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print(f" ├── 🔄 [{method}] {endpoint_path}")
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try:
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resp = requests.request(
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method=method,
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url=url,
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json=json_data,
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params=params,
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headers=req_headers,
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timeout=SAPB1_TIMEOUT,
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verify=SAPB1_VERIFY_SSL,
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)
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except requests.exceptions.Timeout:
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raise ConnectionError(f"Timeout ({SAPB1_TIMEOUT}s) en {endpoint_path}")
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except requests.exceptions.ConnectionError as exc:
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raise ConnectionError(f"No se pudo conectar con SAP B1: {exc}")
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except requests.RequestException as exc:
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raise ConnectionError(f"Error en solicitud HTTP: {exc}")
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if resp.status_code == 401:
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print("⚠️ Sesión expirada (401). Reautenticando e intentando una vez...")
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req_headers["Cookie"] = login()["Cookie"]
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resp = requests.request(
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method=method,
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url=url,
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json=json_data,
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params=params,
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headers=req_headers,
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timeout=SAPB1_TIMEOUT,
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verify=SAPB1_VERIFY_SSL,
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)
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_log_response(method, endpoint_path, resp, json_data)
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if resp.status_code >= 400:
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try:
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error_body = resp.json()
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sap_message = (
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error_body.get("error", {})
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.get("message", {})
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.get("value", resp.text)
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)
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except (json.JSONDecodeError, AttributeError):
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sap_message = resp.text
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raise ConnectionError(
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f"Error en SAP {method} {endpoint_path}: "
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f"HTTP {resp.status_code} - {sap_message}"
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)
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return resp
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# ============================================================================
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# CREAR DRAFT (POST /Drafts)
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# ============================================================================
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def create_draft(payload: dict) -> dict:
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resp = forward_to_sapb1("POST", "Drafts", json_data=payload)
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result = resp.json()
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print(f" ├── ✅ Draft creado DocEntry={result.get('DocEntry')}")
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return result
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# ============================================================================
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# OBTENER FACTURA DE COMPRA (GET /PurchaseInvoices(DocEntry))
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# ============================================================================
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def get_purchase_invoice(doc_entry: int) -> dict:
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resp = forward_to_sapb1("GET", f"PurchaseInvoices({doc_entry})")
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result = resp.json()
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print(f" ├── ✅ PurchaseInvoices({doc_entry}) obtenida")
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return result
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# ============================================================================
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# OBTENER GUIA (GET /DeliveryNotes)
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# ============================================================================
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def get_delivery_notes(tipo: str, serie: str, numero: str) -> list:
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filter_str = (
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f"Cancelled eq 'tNO'"
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f" and U_BPP_MDSD eq '{tipo}'"
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f" and U_BPP_MDTD eq '{serie}'"
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f" and contains(U_BPP_MDCD,'{numero}')"
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)
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resp = forward_to_sapb1("GET", "DeliveryNotes", params={"$filter": filter_str})
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result = resp.json()
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value = result.get("value", [])
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print(f" ├── ✅ DeliveryNotes obtenida ({len(value)} registros)")
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return value
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# ============================================================================
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# OBTENER ZONAS (GET /U_IDC_ZONAS)
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# ============================================================================
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def get_zonas() -> list:
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filter_str = (
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f"U_Activo eq 'Y'"
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)
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sap_params = {
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"$skip": "0",
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"$top": "100",
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"$inlinecount": "allpages"
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}
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sap_params["$select"] = "Code, Name"
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base_headers = {"B1S-PageSize": "100"}
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if filter_str:
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sap_params["$filter"] = filter_str
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resp = forward_to_sapb1(
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method="GET"
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, endpoint_path="U_IDC_ZONAS"
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, params=sap_params
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, extra_headers=base_headers
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)
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result = resp.json()
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value = result.get("value", [])
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print(f" ├── ✅ U_IDC_ZONAS obtenida ({len(value)} registros)")
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return value
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