import os
from dotenv import load_dotenv

# 載入 .env 檔案中的環境變數
load_dotenv()

class Config:
    SECRET_KEY = os.getenv('SECRET_KEY', 'a_default_secret_key_for_development')
    SQLALCHEMY_DATABASE_URI = os.getenv('DATABASE_URL')
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    UPLOAD_FOLDER = 'uploads'
    GENERATED_FOLDER = 'generated'
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024
    ONLYOFFICE_URL = os.getenv('ONLYOFFICE_URL')
    ONLYOFFICE_INTERNAL_URL = os.getenv('ONLYOFFICE_INTERNAL_URL', os.getenv('ONLYOFFICE_URL'))
    ONLYOFFICE_JWT_SECRET = os.getenv('ONLYOFFICE_JWT_SECRET')
    
    # Redis 快取配置
    CACHE_TYPE = "redis"
    CACHE_REDIS_URL = os.getenv('REDIS_URL', 'redis://redis:6379/0')
    CACHE_DEFAULT_TIMEOUT = 300  # 5分鐘
    
    # 會話快取配置
    SESSION_TYPE = 'redis'
    SESSION_REDIS = None  # 將在 app 初始化時設定
    SESSION_PERMANENT = False
    SESSION_USE_SIGNER = True
    SESSION_KEY_PREFIX = 'tempspec:'
    
    # CDN 配置
    CDN_DOMAIN = os.getenv('CDN_DOMAIN', '')
    STATIC_URL_PATH = '/static'

    # LDAP Configuration
    LDAP_SERVER = os.getenv('LDAP_SERVER')
    LDAP_PORT = int(os.getenv('LDAP_PORT', 389))
    LDAP_USE_SSL = os.getenv('LDAP_USE_SSL', 'false').lower() in ['true', '1', 't']
    LDAP_BIND_USER_DN = os.getenv('LDAP_BIND_USER_DN')
    LDAP_BIND_USER_PASSWORD = os.getenv('LDAP_BIND_USER_PASSWORD')
    LDAP_SEARCH_BASE = os.getenv('LDAP_SEARCH_BASE') # e.g., 'ou=users,dc=panjit,dc=com,dc=tw'
    LDAP_USER_LOGIN_ATTR = os.getenv('LDAP_USER_LOGIN_ATTR', 'userPrincipalName') # AD attribute for user login (e.g., user@panjit.com.tw)

    # SMTP Configuration
    SMTP_SERVER = os.getenv('SMTP_SERVER', 'mail.panjit.com.tw')
    SMTP_PORT = int(os.getenv('SMTP_PORT', 25))
    SMTP_USE_TLS = os.getenv('SMTP_USE_TLS', 'false').lower() in ['true', '1', 't']
    SMTP_USE_SSL = os.getenv('SMTP_USE_SSL', 'false').lower() in ['true', '1', 't']
    SMTP_SENDER_EMAIL = os.getenv('SMTP_SENDER_EMAIL', 'temp-spec-system@panjit.com.tw')
    SMTP_SENDER_PASSWORD = os.getenv('SMTP_SENDER_PASSWORD', '')  # Port 25 不需要密碼
    SMTP_AUTH_REQUIRED = os.getenv('SMTP_AUTH_REQUIRED', 'false').lower() in ['true', '1', 't']