import time
import json
from pathlib import Path
from typing import Literal, Optional

# Rutas
LOG_FILE = Path("logs/registro_uso.json")
USER_STATS_FILE = Path("logs/usuarios.json")

# Crear carpeta si no existe
LOG_FILE.parent.mkdir(parents=True, exist_ok=True)

# Tipo de entrada admitida
TipoEntrada = Literal["Texto", "Imagen", "PDF", "DOCX", "TXT", "Otro"]


def registrar_uso(
    user_id: int,
    username: Optional[str],
    tipo_entrada: TipoEntrada,
    duracion_segundos: float,
    exito: bool,
    fuente: Optional[str] = "telegram_bot",
) -> None:
    """
    Registra un evento de uso y actualiza el historial acumulado por usuario.
    """
    timestamp = time.strftime("%Y-%m-%d %H:%M:%S")
    log_entry = {
        "timestamp": timestamp,
        "user_id": user_id,
        "username": username or "N/A",
        "tipo_entrada": tipo_entrada,
        "duracion_segundos": round(duracion_segundos, 2),
        "exito": exito,
        "fuente": fuente,
    }

    # Guardar log individual
    try:
        registros = []
        if LOG_FILE.exists():
            with open(LOG_FILE, "r", encoding="utf-8") as f:
                registros = json.load(f)
        registros.append(log_entry)
        with open(LOG_FILE, "w", encoding="utf-8") as f:
            json.dump(registros, f, indent=2, ensure_ascii=False)
    except Exception as e:
        print(f"[ERROR] No se pudo guardar el registro individual: {e}")

    # Actualizar conteo acumulado
    try:
        resumen = {}
        if USER_STATS_FILE.exists():
            with open(USER_STATS_FILE, "r", encoding="utf-8") as f:
                resumen = json.load(f)

        uid = str(user_id)
        if uid not in resumen:
            resumen[uid] = {
                "username": username or "N/A",
                "total_usos": 0,
                "exitosos": 0,
                "fallidos": 0,
                "ultima_vez": timestamp
            }

        resumen[uid]["username"] = username or "N/A"
        resumen[uid]["total_usos"] += 1
        resumen[uid]["ultima_vez"] = timestamp
        if exito:
            resumen[uid]["exitosos"] += 1
        else:
            resumen[uid]["fallidos"] += 1

        with open(USER_STATS_FILE, "w", encoding="utf-8") as f:
            json.dump(resumen, f, indent=2, ensure_ascii=False)

    except Exception as e:
        print(f"[ERROR] No se pudo actualizar el resumen de usuarios: {e}")