"""
Flujo completo de ``pipeline._procesar_un_correo`` con SAP, HANA, Outlook y la
BD simulados. Usa el correo de prueba 001 (factura F002-2450, una línea de
624.38 con la guía T001-128912).
"""
import glob
import os
import shutil

import pytest

import database_utilities
import hana_manager
import outlook_utilities
import pipeline
import sapb1_manager
from conftest import FIXTURES

CASO = "001_correo"
TOTAL_LINEA = 624.38


class Entorno:
    """Registra lo que el pipeline le pide a los servicios externos."""

    def __init__(self):
        self.line_total_sap = TOTAL_LINEA
        self.error_al_crear = None
        self.drafts = []
        self.correos = []
        self.descargas = 0


@pytest.fixture
def entorno(tmp_path, monkeypatch):
    e = Entorno()
    monkeypatch.setenv("RUTA_RED_FACTURACION", "")

    monkeypatch.setattr(database_utilities, "get_existing_ids", lambda ids: [])
    monkeypatch.setattr(database_utilities, "save_emails", lambda emails: None)

    def descargar(addr, id_, token, carpeta):
        e.descargas += 1
        os.makedirs(carpeta, exist_ok=True)   # como el download_attachments real
        nombres = []
        for ruta in glob.glob(os.path.join(FIXTURES, CASO, "*")):
            if ruta.lower().endswith((".pdf", ".xml")):
                shutil.copy(ruta, carpeta)
                nombres.append(os.path.basename(ruta))
        return nombres

    def enviar(token, desde, para, asunto, html, adjuntos=None, cc_recipients=None):
        e.correos.append({"para": para, "asunto": asunto, "html": html, "cc": cc_recipients, "adjuntos": adjuntos})
        return True

    def crear_draft(draft):
        if e.error_al_crear:
            raise e.error_al_crear
        e.drafts.append(draft)
        return {"DocEntry": 777}

    def delivery_notes(**k):
        return [{"Series": "1", "DocNum": "9", "U_IDC_DESTINO": "Z1", "DocumentLines": [
            {"ItemCode": "FL10007", "LineTotal": e.line_total_sap, "PriceAfterVAT": 1.3396,
             "Quantity": 466, "WarehouseCode": "A-CENTRA", "Weight1": 1}]}]

    monkeypatch.setattr(outlook_utilities, "download_attachments", descargar)
    monkeypatch.setattr(outlook_utilities, "send_email", enviar)
    monkeypatch.setattr(sapb1_manager, "get_zonas", lambda: [{"Code": "Z1", "Name": "ZONA1"}])
    monkeypatch.setattr(sapb1_manager, "get_delivery_notes", delivery_notes)
    monkeypatch.setattr(sapb1_manager, "obtener_condicion_pago", lambda c: {"NumberOfAdditionalDays": 30})
    monkeypatch.setattr(sapb1_manager, "create_draft", crear_draft)
    monkeypatch.setattr(hana_manager, "obtener_valor_referencial", lambda s, n: 0.0)

    e.descarga = tmp_path / "descarga"
    e.salida = tmp_path / "salida"
    return e


def _procesar(e, sender="proveedor@empresa.com"):
    email = {"id": "abc", "fecha": "2026-10-14 10:00:00", "subject": "Factura", "sender": sender}
    pipeline._procesar_un_correo(email, "token", "buzon@aberio.com", str(e.descarga), str(e.salida))
    return email


def test_precios_coinciden_crea_draft_y_notifica(entorno):
    _procesar(entorno)

    assert len(entorno.drafts) == 1
    draft = entorno.drafts[0]
    assert draft["CardCode"] == "PL10060028686"
    assert draft["NumAtCard"] == "01F002-2450"
    assert draft["DocumentLines"][0]["U_IDC_GRFLETE"] == "09T001-128912"

    assert len(entorno.correos) == 1
    correo = entorno.correos[0]
    assert correo["para"] == ["proveedor@empresa.com"]
    assert correo["asunto"] == "Draft SAP B1 - F002-2450"
    assert "creado exitosamente" in correo["html"] and "777" in correo["html"]
    assert correo["cc"]                                   # siempre se copia al equipo
    assert any(a.endswith(".xml") for a in correo["adjuntos"])


def test_precios_no_coinciden_no_crea_draft_pero_notifica(entorno):
    entorno.line_total_sap = TOTAL_LINEA + 50

    _procesar(entorno)

    assert entorno.drafts == []
    assert len(entorno.correos) == 1
    assert "Draft NO creado" in entorno.correos[0]["html"]


def test_error_al_crear_draft_se_notifica(entorno):
    entorno.error_al_crear = RuntimeError("Service Layer caído")

    _procesar(entorno)

    assert entorno.drafts == []
    assert len(entorno.correos) == 1
    assert "Error al crear Draft" in entorno.correos[0]["html"]
    assert "Service Layer caído" in entorno.correos[0]["html"]


def test_remitente_desconocido_no_envia_correo(entorno):
    _procesar(entorno, sender="Desconocido")

    assert len(entorno.drafts) == 1       # el draft se crea igual
    assert entorno.correos == []


def test_correo_ya_procesado_se_salta(entorno, monkeypatch):
    monkeypatch.setattr(database_utilities, "get_existing_ids", lambda ids: ["abc"])

    _procesar(entorno)

    assert entorno.descargas == 0
    assert entorno.drafts == [] and entorno.correos == []


def test_guarda_resultados_y_draft_en_disco(entorno):
    _procesar(entorno)

    nombres = os.listdir(entorno.salida)
    assert any(n.startswith("xml_resultado_F002-2450") for n in nombres)
    assert any(n.startswith("draft_sapb1_F002-2450") for n in nombres)