import requests
import urllib3
from config_loader import CONFIG

###################################################
def post(session, recurso:str, json_body: dict = None):
    
    url = CONFIG.service_layer.url
    if not url.endswith('/'):
        url += '/'

    headers = {
        "accept": "application/json", 
        "content-type": "application/json"
    }

    urllib3.disable_warnings()
    end_point = f"{url}{recurso}"

    try:
        response = None
        if json_body:
            response = session.post(
                end_point, 
                headers = headers, 
                json = json_body, 
                verify = False
            )
        else:
            response = session.post(
                end_point, 
                headers = headers, 
                verify = False
        )

        response.raise_for_status() 
        print(f"  ✅ [POST] {recurso} - Status {response.status_code}")
        
        return response

    except requests.RequestException as ex:
        print(f"  ❌ [POST] {recurso} - Falló: {ex}")
        return None
    
###################################################
def get(session, recurso:str):
    
    SL_MAXPAGESIZE = CONFIG.service_layer.maxpagesize

    url = CONFIG.service_layer.url
    if not url.endswith('/'):
        url += '/'

    headers = {
        "accept": "application/json", 
        "content-type": "application/json",
        "Prefer": f"odata.maxpagesize={SL_MAXPAGESIZE}"
    }

    urllib3.disable_warnings()
    end_point = f"{url}{recurso}"

    try:

        response = session.get(
            end_point, 
            headers = headers, 
            verify = False
        )

        response.raise_for_status()
        print(f"  ✅ [GET] {recurso} - Status {response.status_code}")
        
        return response

    except requests.RequestException as ex:
        print(f"  ❌ [GET] {recurso} - Falló: {ex}")
        return None
    
###################################################
def patch(session, recurso:str, json_body: dict):
    
    url = CONFIG.service_layer.url
    REPLACE_COLLECTIONS = CONFIG.service_layer.b1s_replacecollectionsonpatch

    if not url.endswith('/'):
        url += '/'

    headers = {
        "accept": "application/json", 
        "content-type": "application/json"
    }

    if REPLACE_COLLECTIONS:
        headers["B1S-ReplaceCollectionsOnPatch"] = "true"

    urllib3.disable_warnings()
    end_point = f"{url}{recurso}"

    try:

        response = session.patch(
            end_point, 
            headers = headers,
            json = json_body,
            verify = False
        )
        
        if response.status_code == 204:
            print(f"  ✅ [PATCH] {recurso} - Status {response.status_code}")
            return response

        if 400 <= response.status_code <= 499:
            print(f"  ❌ [PATCH] {recurso} - Error HTTP {response.status_code}")
            try:
                error_body = response.json()
                import json as _json
                error = error_body.get("error", {})
                mensaje = error.get("message", {})
                if isinstance(mensaje, dict):
                    mensaje = mensaje.get("value", str(mensaje))
                codigo = error.get("code", "N/A")
                print(f"  📋 SAP Error Code   : {codigo}")
                print(f"  📋 SAP Error Message: {mensaje}")
                # TransactionNotification (validaciones de UDF, triggers, etc.)
                notif = error_body.get("TransactionNotification") or error.get("innererror", {}).get("TransactionNotification")
                if notif:
                    print(f"  📋 TransactionNotification: {notif}")
            except Exception:
                print(f"  📋 Respuesta SAP (raw): {response.text}")
            return None

        # Otros errores no esperados
        response.raise_for_status()
        return response

    except requests.RequestException as ex:
        print(f"  ❌ [PATCH] {recurso} - Excepción: {ex}")
        return None
    
###################################################