"""
Configuration file for the EXE encryption system
Contains security settings and system parameters
"""

import os
from pathlib import Path

# System configuration
SYSTEM_CONFIG = {
    'app_name': 'EXE Secure Wrapper',
    'version': '2.0.0',
    'company': 'Secure Software Solutions',
    'contact': 'support@securesoft.com'
}

# Security settings
SECURITY_CONFIG = {
    # Encryption settings
    'key_length': 32,  # bytes
    'salt_length': 32,  # bytes
    'iterations': 100000,  # PBKDF2 iterations
    'hash_algorithm': 'sha256',
    'xor_key': os.environ.get('EXE_WRAPPER_KEY', 'EXEWrapper#2024').encode(),

    # File validation
    'min_file_size': 1024,  # bytes
    'magic_header': b'ENC_MAGIC',
    'header_size': 512,  # 配置头固定长度（字节）

    # License settings
    'trial_days': 7,
    'license_key_length': 20,
    'license_format': 'XXXXX-XXXXX-XXXXX-XXXXX',
}

# Temporary file settings
TEMP_CONFIG = {
    'temp_prefix': 'sec_wrap_',
    'max_temp_age': 3600,  # seconds (1 hour)
    'auto_cleanup': True,
}

# Database settings (会被嵌入到包装文件中)
DATABASE_CONFIG = {
    'mysql': {
        'host': os.environ.get('DB_HOST', 'localhost'),
        'port': int(os.environ.get('DB_PORT', 3306)),
        'database': os.environ.get('DB_NAME', 'license_system'),
        'user': os.environ.get('DB_USER', 'root'),
        'password': os.environ.get('DB_PASSWORD', ''),
        'charset': 'utf8mb4',
        'connection_timeout': 30,
        'ssl_disabled': True,
    },
    'sqlite': {
        'filename': 'licenses_local.db',
        'check_same_thread': False,
    }
}

# Logging configuration
LOGGING_CONFIG = {
    'level': 'INFO',
    'format': '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
    'file_max_size': 10 * 1024 * 1024,  # 10MB
    'backup_count': 5,
    'log_dir': 'logs',
}

# Validation settings
VALIDATION_CONFIG = {
    'check_internet': True,
    'max_retries': 3,
    'retry_delay': 1,  # seconds
    'timeout': 10,  # seconds
    'heartbeat_interval': 300,  # seconds (5 minutes)
}

# Build paths
BASE_DIR = Path(__file__).parent.absolute()
CONFIG_DIR = BASE_DIR / "config"
LOG_DIR = BASE_DIR / LOGGING_CONFIG['log_dir']
TEMP_DIR = BASE_DIR / "temp"

# Ensure directories exist
for directory in [LOG_DIR, TEMP_DIR, CONFIG_DIR]:
    directory.mkdir(exist_ok=True)

def get_config_path(filename):
    """Get full path to configuration file"""
    return CONFIG_DIR / filename

def get_temp_path(filename=None):
    """Get temporary file path"""
    if filename:
        return TEMP_DIR / filename
    return TEMP_DIR

def get_log_path(filename):
    """Get log file path"""
    return LOG_DIR / filename