泰国的数字化转型和电信行业

// Example security configuration
const securityConfig = {
    encryption: {
        algorithm: 'AES-256-GCM', // Strong encryption algorithm
        keyRotationPeriod: '30d', // Rotate keys every 30 days
        saltRounds: 12 // Sufficient salt rounds for bcrypt
    },
    audit: {
        logLevel: 'INFO', // Log all relevant events
        retentionPeriod: '90d', // Retain logs for 90 days
        alertThreshold: 'MEDIUM' // Trigger alerts for medium-severity events
    }
};

/**
 * Sanitizes and validates Thai phone numbers.
 * @param {string} number - Raw phone number input.
 * @param {Object} options - Validation options (e.g., allowInternational).
 * @returns {string} Sanitized phone number in [E.164 format](https://www.sent.dm/resources/e164-phone-format) (+66...).
 * @throws {Error} If validation fails.
 */
const sanitizePhoneNumber = (number, options = { allowInternational: true }) => {
    // Remove all non-numeric characters except '+'
    let sanitized = number.replace(/[^\d+]/g, '');

    // Validate basic format
    if (!sanitized) {
        throw new Error('Empty phone number provided.');
    }

    // Handle international format
    if (options.allowInternational && sanitized.startsWith('+66')) {
        if (sanitized.length !== 11 && sanitized.length !== 12) { // +66 followed by 8 or 9 digits
            throw new Error('Invalid international phone number length.');
        }
        return sanitized;
    }

    // Handle domestic format (convert to international)
    if (sanitized.startsWith('0')) {
        if (sanitized.length !== 10 && sanitized.length !== 11) { // 0 followed by 9 or 10 digits
            throw new Error('Invalid domestic phone number length.');
        }
        sanitized = '+66' + sanitized.slice(1);
        return sanitized;
    }

    throw new Error('Invalid phone number format.');
};


// Test cases
console.log(sanitizePhoneNumber('+66812345678')); // +66812345678
console.log(sanitizePhoneNumber('0812345678')); // +66812345678
try {
    console.log(sanitizePhoneNumber('123')); // Throws error: Invalid phone number format.
} catch (e) {
    console.error(e.message);
}

try {
    console.log(sanitizePhoneNumber('+661234567')); // Throws error: Invalid international phone number length.
} catch (e) {
    console.error(e.message);
}

const THAI_NUMBER_PATTERNS = {
    LANDLINE: /^0[2-9]\d{7}$/, // Example: 021234567
    MOBILE: /^0[689]\d{8}$/,   // Example: 0812345678
    // ... other patterns
};

class ThaiMNPService {
    constructor(config) {
        this.mnpEndpoint = config.mnpEndpoint;
        this.updateInterval = config.updateInterval || 3600000; // 1 hour
        this.cache = new Map();
    }

    async checkPortabilityStatus(phoneNumber) {
        const sanitized = sanitizePhoneNumber(phoneNumber);

        // Check cache first for performance
        if (this.cache.has(sanitized)) {
            const cached = this.cache.get(sanitized);
            if (Date.now() - cached.timestamp < this.updateInterval) {
                return cached.status;
            }
        }

        // Real-time MNP database check (replace with your actual API call)
        const status = await this.queryMNPDatabase(sanitized);

        // Cache the result
        this.cache.set(sanitized, { status, timestamp: Date.now() });

        return status;
    }

    // Placeholder for your actual MNP database query function
    async queryMNPDatabase(phoneNumber) {
        // Replace this with your actual API call to the MNP database
        // Example:
        // const response = await fetch(`${this.mnpEndpoint}?number=${phoneNumber}`);
        // const data = await response.json();
        // return data.status;

        // This example returns a dummy status for demonstration purposes
        return 'ACTIVE';
    }
}