import os
from datetime import timedelta


class Config:
    # 基础配置
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'your-secret-key-here-change-in-production'

    # 数据库配置
    MYSQL_HOST = '27.124.22.104'
    MYSQL_USER = 'taibai'
    MYSQL_PASSWORD = 'taibaishopping'
    MYSQL_DB = 'online_shopping'
    MYSQL_PORT = 3306

    # SQLAlchemy配置
    SQLALCHEMY_DATABASE_URI = f'mysql+pymysql://{MYSQL_USER}:{MYSQL_PASSWORD}@{MYSQL_HOST}:{MYSQL_PORT}/{MYSQL_DB}'
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_ENGINE_OPTIONS = {
        'pool_size': 10,
        'pool_timeout': 20,
        'pool_recycle': -1,
        'pool_pre_ping': True
    }

    # Session配置
    SESSION_TYPE = 'filesystem'
    SESSION_PERMANENT = False
    PERMANENT_SESSION_LIFETIME = timedelta(hours=24)

    # 文件上传配置
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16MB
    UPLOAD_FOLDER = 'app/static/uploads'

    # 分页配置
    POSTS_PER_PAGE = 20

    # 邮件配置
    MAIL_SERVER = 'mail.sq0715.com'
    MAIL_PORT = 587
    MAIL_USE_TLS = True
    MAIL_USE_SSL = False
    MAIL_USERNAME = 'vip@sq0715.com'
    MAIL_PASSWORD = 'Aalsq12350501.'
    MAIL_DEFAULT_SENDER = 'vip@sq0715.com'

    # 验证码配置
    EMAIL_CODE_EXPIRE_MINUTES = 10  # 邮箱验证码有效期（分钟）


class DevelopmentConfig(Config):
    DEBUG = True


class ProductionConfig(Config):
    DEBUG = False


config = {
    'development': DevelopmentConfig,
    'production': ProductionConfig,
    'default': DevelopmentConfig
}