# ============================================================================
# Oderith Dental — Configuración del Proyecto
# ============================================================================

import os
from datetime import timedelta
from dotenv import load_dotenv

load_dotenv()


class Config:
    """Configuración base compartida por todos los entornos."""

    SECRET_KEY = os.environ.get('SECRET_KEY', 'oderith-dev-key-cambiar-en-produccion')

    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'DATABASE_URL',
        'sqlite:///oderith_dental.db'
    )
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_ENGINE_OPTIONS = {}

    PERMANENT_SESSION_LIFETIME = timedelta(hours=12)
    SESSION_COOKIE_HTTPONLY = True
    SESSION_COOKIE_SAMESITE = 'Lax'

    APP_NAME = 'Oderith Dental'
    APP_VERSION = '1.0.0'
    TIMEZONE = os.environ.get('TIMEZONE', 'America/Caracas')
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024
    UPLOAD_FOLDER = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'uploads')


class DevelopmentConfig(Config):
    """Desarrollo local — usa SQLite por defecto."""
    DEBUG = True
    SESSION_COOKIE_SECURE = False


class ProductionConfig(Config):
    """Producción en cPanel — MySQL + HTTPS."""
    DEBUG = False
    SESSION_COOKIE_SECURE = False
    SESSION_COOKIE_SAMESITE = 'Lax'
    SESSION_COOKIE_HTTPONLY = True
    SQLALCHEMY_ENGINE_OPTIONS = {
        'pool_recycle': 280,
        'pool_pre_ping': True,
        'pool_size': 10,
        'max_overflow': 20,
    }


class TestingConfig(Config):
    """Pruebas — SQLite en memoria."""
    TESTING = True
    SQLALCHEMY_DATABASE_URI = 'sqlite:///:memory:'
    SESSION_COOKIE_SECURE = False


config_map = {
    'development': DevelopmentConfig,
    'production': ProductionConfig,
    'testing': TestingConfig,
}


def get_config():
    env = os.environ.get('FLASK_ENV', 'development').lower()
    return config_map.get(env, DevelopmentConfig)