import os
import sys
import sqlite3
import json

# Ruta a la base de datos (un nivel arriba del script)
ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
if ROOT_DIR not in sys.path:
    sys.path.insert(0, ROOT_DIR)

import sync_engine  # noqa: E402

from paths import DB_PATH
_schema_cache = {}
_tokens_map = None


def get_location_token(location_id):
    global _tokens_map
    if _tokens_map is None:
        _tokens_map = sync_engine.get_tokens_map()
    return _tokens_map.get(location_id)


def get_schema_field_id(location_id, object_key, field_name):
    cache_key = (location_id, object_key)
    if cache_key not in _schema_cache:
        token = get_location_token(location_id)
        if not token:
            _schema_cache[cache_key] = {}
        else:
            _schema_cache[cache_key] = sync_engine.ghl_client.get_object_schema(token, location_id, object_key)
    return _schema_cache[cache_key].get(field_name)


def extract_custom_field_value(cf_json, field_id):
    if not field_id or not cf_json:
        return None
    try:
        cfs = json.loads(cf_json)
        if isinstance(cfs, list):
            for cf in cfs:
                if cf.get("id") == field_id or cf.get("fieldId") == field_id:
                    return cf.get("value")
    except Exception:
        pass
    return None

def analyze_discrepancies():
    if not os.path.exists(DB_PATH):
        print(f"Error: La base de datos local no existe en {DB_PATH}.")
        print("Por favor, ejecuta la sincronización global primero desde el dashboard.")
        sys.exit(1)

    conn = sqlite3.connect(DB_PATH)
    conn.row_factory = sqlite3.Row
    
    try:
        # 1. Obtener todas las cuentas y mapear sus IDs y nombres
        accounts_rows = conn.execute("SELECT location_id, nombre FROM accounts").fetchall()
        branches = {}
        for r in accounts_rows:
            name = r['nombre']
            # Normalizar nombre de sucursal para comparación (ej. de "85932 - MP - La Viga" a "la viga")
            normalized_name = name.lower()
            for token in ["mp", "-", "859", "0001", "qro", "demo", "plaza"]:
                normalized_name = normalized_name.replace(token, "")
            normalized_name = " ".join(normalized_name.split())
            branches[r['location_id']] = {
                "full_name": name,
                "clean_name": normalized_name
            }

        # 2. Consultar todas las oportunidades y sus contactos asociados
        sql = """
            SELECT o.id as opp_id, o.name as opp_name, o.location_id as opp_loc_id, o.status as opp_status,
                   c.id as contact_id, c.first_name, c.last_name, c.custom_fields_json, c.location_id as contact_loc_id
            FROM opportunities o
            JOIN contacts c ON o.contact_id = c.id AND o.location_id = c.location_id
        """
        opps = conn.execute(sql).fetchall()

        print("=== ANÁLISIS DE DISCREPANCIAS DE SUCURSAL ===")
        print(f"Total de oportunidades con contactos analizadas: {len(opps)}")
        print("Buscando inconsistencias entre la sucursal del contacto (campo custom) y la ubicación real de la oportunidad...\n")
        print("-" * 110)

        discrepancies_count = 0
        missing_schema_locations = set()

        for row in opps:
            opp_loc_id = row['opp_loc_id']
            contact_cf_json = row['custom_fields_json']
            contact_loc_id = row['contact_loc_id']
            
            # Obtener nombre de la sucursal donde vive la oportunidad
            opp_branch_info = branches.get(opp_loc_id, {"full_name": "Desconocida", "clean_name": ""})
            opp_branch_clean = opp_branch_info["clean_name"]
            
            # Leer solo el campo personalizado Sucursal resuelto dinamicamente por schema.
            contact_sucursal_val = None
            sucursal_field_id = get_schema_field_id(contact_loc_id, "contact", "Sucursal")
            if not sucursal_field_id:
                missing_schema_locations.add(contact_loc_id)
            else:
                val = str(extract_custom_field_value(contact_cf_json, sucursal_field_id) or "").strip()
                val_lower = val.lower()
                for loc_id, b_info in branches.items():
                    b_clean = b_info["clean_name"]
                    if b_clean and b_clean in val_lower:
                        contact_sucursal_val = b_info["full_name"]
                        break
            
            # Si el contacto tiene un valor de sucursal definido, pero no se parece al de la oportunidad
            if contact_sucursal_val:
                # Normalizar la sucursal del contacto para comparar
                c_suc_clean = contact_sucursal_val.lower()
                for token in ["mp", "-", "859", "0001", "qro", "demo", "plaza"]:
                    c_suc_clean = c_suc_clean.replace(token, "")
                c_suc_clean = " ".join(c_suc_clean.split())
                
                # Si los nombres limpios difieren, hay discrepancia
                if c_suc_clean != opp_branch_clean:
                    discrepancies_count += 1
                    contact_name = f"{row['first_name'] or ''} {row['last_name'] or ''}".strip()
                    print(f"{discrepancies_count:02d}. Oportunidad:   {row['opp_name']}")
                    print(f"    Cliente:       {contact_name} (ID: {row['contact_id']})")
                    print(f"    Ubicación Opp: {opp_branch_info['full_name']} ({opp_loc_id})")
                    print(f"    Campo Contact: {contact_sucursal_val}")
                    print(f"    Estado Opp:    {row['opp_status'].upper()}")
                    print("-" * 110)

        print(f"\nAnálisis finalizado.")
        if missing_schema_locations:
            print(f"Locations sin campo Sucursal resuelto por schema: {len(missing_schema_locations)}")
        if discrepancies_count == 0:
            print("¡Felicidades! No se detectaron discrepancias de sucursal en la base de datos.")
        else:
            print(f"Se encontraron {discrepancies_count} discrepancias de sucursal.")
            print("Se recomienda correr el script 'fix_sucursal_discrepancies.py' para corregir automáticamente.")

    finally:
        conn.close()

if __name__ == "__main__":
    analyze_discrepancies()