import os
from dotenv import load_dotenv

load_dotenv()


class Config:
    SECRET_KEY = os.environ.get('SECRET_KEY', 'change-this-secret-in-production-use-a-long-random-string')

    # MySQL
    MYSQL_HOST = os.environ.get('MYSQL_HOST', 'localhost')
    MYSQL_PORT = int(os.environ.get('MYSQL_PORT', 3306))
    MYSQL_USER = os.environ.get('MYSQL_USER', 'itasset_user')
    MYSQL_PASSWORD = os.environ.get('MYSQL_PASSWORD', 'itasset_pass')
    MYSQL_DB = os.environ.get('MYSQL_DB', 'itasset_db')

    # Allow SQLALCHEMY_DATABASE_URI env var to override (used for SQLite in local dev)
    _mysql_uri = (
        f"mysql+pymysql://{os.environ.get('MYSQL_USER', 'itasset_user')}:"
        f"{os.environ.get('MYSQL_PASSWORD', 'itasset_pass')}@"
        f"{os.environ.get('MYSQL_HOST', 'localhost')}:"
        f"{os.environ.get('MYSQL_PORT', 3306)}/"
        f"{os.environ.get('MYSQL_DB', 'itasset_db')}?charset=utf8mb4"
    )
    SQLALCHEMY_DATABASE_URI = os.environ.get('SQLALCHEMY_DATABASE_URI', _mysql_uri)
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    # LDAP / Active Directory
    LDAP_SERVER = os.environ.get('LDAP_SERVER', '')
    LDAP_PORT = int(os.environ.get('LDAP_PORT', 389))
    LDAP_USE_SSL = os.environ.get('LDAP_USE_SSL', 'false').lower() == 'true'
    LDAP_BIND_USER = os.environ.get('LDAP_BIND_USER', '')
    LDAP_BIND_PASSWORD = os.environ.get('LDAP_BIND_PASSWORD', '')
    LDAP_BASE_DN = os.environ.get('LDAP_BASE_DN', '')
    LDAP_USER_SEARCH_FILTER = os.environ.get(
        'LDAP_USER_SEARCH_FILTER', '(&(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))'
    )
    # AD attribute that stores the numeric Windows ID (e.g. employeeID)
    LDAP_WINDOWS_ID_ATTR = os.environ.get('LDAP_WINDOWS_ID_ATTR', 'employeeID')

    # File storage
    UPLOAD_FOLDER = os.environ.get('UPLOAD_FOLDER', 'uploads')
    PDF_FOLDER = os.environ.get('PDF_FOLDER', 'pdfs')
    TEMPLATE_FOLDER = os.environ.get('TEMPLATE_FOLDER', 'doc_templates')
    DOCX_FOLDER = os.environ.get('DOCX_FOLDER', 'docx_output')
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16 MB

    # Company info used in generated PDFs
    COMPANY_NAME = os.environ.get('COMPANY_NAME', 'Your Company Name')
    COMPANY_ADDRESS = os.environ.get('COMPANY_ADDRESS', '')
    COMPANY_LOGO = os.environ.get('COMPANY_LOGO', '')  # path to logo file

    # Pagination
    ITEMS_PER_PAGE = int(os.environ.get('ITEMS_PER_PAGE', 25))

    # Dell TechDirect API (for service-tag auto-lookup)
    # Register at https://tdm.dell.com → API Services → Create credentials
    DELL_CLIENT_ID = os.environ.get('DELL_CLIENT_ID', '')
    DELL_CLIENT_SECRET = os.environ.get('DELL_CLIENT_SECRET', '')


class DevelopmentConfig(Config):
    DEBUG = True


class ProductionConfig(Config):
    DEBUG = False


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