import os
from datetime import timedelta

basedir = os.path.abspath(os.path.dirname(__file__))

class Config:
    # Secret key for session management
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'dev-secret-key-change-in-production'

    # Database configuration
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
        'mysql+pymysql://jqc_admin:Jqc4dm1n141!@localhost/janitorial_qc'
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_ECHO = False

    # Upload configuration
    UPLOAD_FOLDER = os.path.join(basedir, 'app/static/uploads')
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16MB max file size
    ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}

    # Session configuration
    PERMANENT_SESSION_LIFETIME = timedelta(hours=24)
    SESSION_COOKIE_SECURE = False  # Change to True on production
    SESSION_COOKIE_HTTPONLY = True
    SESSION_COOKIE_SAMESITE = 'Lax'

    # Mail configuration (configure later)
    MAIL_SERVER = os.environ.get('MAIL_SERVER')
    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 587)
    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS', 'true').lower() in ['true', 'on', '1']
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')

class DevelopmentConfig(Config):
    DEBUG = True
    SQLALCHEMY_ECHO = True

class ProductionConfig(Config):
    DEBUG = False
    SESSION_COOKIE_SECURE = True

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