// Configuration module for AI Recruitment Site Template
// Centralizes all environment variable loading with sensible defaults

const crypto = require('crypto');

// Helper function to generate secure random strings
function generateSecret(length = 64) {
  return crypto.randomBytes(length).toString('hex');
}

// Company Information
const company = {
  name: process.env.COMPANY_NAME || 'Your Recruitment Firm',
  tagline: process.env.COMPANY_TAGLINE || 'Finding the Perfect Match for Your Career',
  description: process.env.COMPANY_DESCRIPTION || 'We specialize in connecting talented professionals with exceptional opportunities across various industries.'
};

// Branding Colors
const branding = {
  primaryColor: process.env.PRIMARY_COLOR || '#2563EB',
  accentColor: process.env.ACCENT_COLOR || '#059669',
  darkColor: process.env.DARK_COLOR || '#1E293B'
};

// Contact Information
const contact = {
  email: process.env.CONTACT_EMAIL || 'info@yourcompany.com',
  phone: process.env.CONTACT_PHONE || '+1 (555) 123-4567',
  address: process.env.CONTACT_ADDRESS || '123 Business St, Suite 100, City, State 12345',
  businessHours: process.env.BUSINESS_HOURS || 'Monday - Friday: 9:00 AM - 6:00 PM'
};

// Social Media Links
const social = {
  linkedin: process.env.SOCIAL_LINKEDIN || '',
  twitter: process.env.SOCIAL_TWITTER || '',
  facebook: process.env.SOCIAL_FACEBOOK || ''
};

// Application Settings
const app = {
  nodeEnv: process.env.NODE_ENV || 'development',
  port: parseInt(process.env.PORT || '3000', 10),
  sessionSecret: process.env.SESSION_SECRET || generateSecret()
};

// Database Configuration
const database = {
  host: process.env.DB_HOST || 'localhost',
  port: parseInt(process.env.DB_PORT || '5432', 10),
  name: process.env.DB_NAME || 'recruitment',
  user: process.env.DB_USER || 'postgres',
  password: process.env.DB_PASSWORD || 'changeme123'
};

// Feature Configuration
const features = {
  maxCvSizeMB: parseInt(process.env.MAX_CV_SIZE_MB || '5', 10),
  allowedCvTypes: (process.env.ALLOWED_CV_TYPES || 'application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document').split(',')
};

// About Page Content
const about = {
  mission: process.env.ABOUT_MISSION || 'Our mission is to bridge the gap between exceptional talent and outstanding opportunities.',
  vision: process.env.ABOUT_VISION || 'We envision a world where every professional finds their perfect career match.',
  values: process.env.ABOUT_VALUES || 'Integrity, Excellence, Innovation, Partnership'
};

// Services
const services = {
  list: (process.env.SERVICES_LIST || 'Executive Search,Contract Staffing,Permanent Placement,Career Consulting,Talent Assessment,Industry Expertise').split(',')
};

// Email Configuration
const email = {
  smtpHost: process.env.SMTP_HOST || '',
  smtpPort: parseInt(process.env.SMTP_PORT || '587', 10),
  smtpUser: process.env.SMTP_USER || '',
  smtpPassword: process.env.SMTP_PASSWORD || '',
  smtpFrom: process.env.SMTP_FROM || 'noreply@yourcompany.com',
  contactFormRecipient: process.env.CONTACT_FORM_RECIPIENT || contact.email
};

// Export configuration object
module.exports = {
  company,
  branding,
  contact,
  social,
  app,
  database,
  features,
  about,
  services,
  email
};