// Mailgun Configuration
// This file handles Mailgun credentials and configuration

import { getEnvVar, isProduction } from '../utils/env';

export interface MailgunConfig {
  apiKey: string | undefined;
  domain: string | undefined;
  baseUrl: string;
  fromName: string;
  fromEmail: string | undefined;
}

// Default configuration for development
const defaultConfig: MailgunConfig = {
  apiKey: 'demo-key',
  domain: 'demo.mailgun.org',
  baseUrl: 'https://api.mailgun.net/v3',
  fromName: 'Medication Reminder',
  fromEmail: 'noreply@demo.mailgun.org',
};

// Load configuration from environment variables or use defaults
export const getMailgunConfig = (): MailgunConfig => {
  return {
    apiKey: getEnvVar('VITE_MAILGUN_API_KEY'),
    domain: getEnvVar('VITE_MAILGUN_DOMAIN'),
    baseUrl: getEnvVar('VITE_MAILGUN_BASE_URL', defaultConfig.baseUrl),
    fromName: getEnvVar('VITE_MAILGUN_FROM_NAME', defaultConfig.fromName),
    fromEmail: getEnvVar('VITE_MAILGUN_FROM_EMAIL'),
  };
};

// Check if Mailgun is properly configured (not using demo values)
export const isMailgunConfigured = (): boolean => {
  const config = getMailgunConfig();
  return (
    config.apiKey !== defaultConfig.apiKey &&
    config.domain !== defaultConfig.domain &&
    config.fromEmail !== defaultConfig.fromEmail &&
    config.apiKey !== undefined &&
    config.apiKey !== '' &&
    config.apiKey.trim().length > 0 &&
    config.domain !== undefined &&
    config.domain !== '' &&
    config.fromEmail !== undefined &&
    config.fromEmail !== ''
  );
};

// Development mode check
export const isDevelopmentMode = (): boolean => {
  return !isProduction() && !isMailgunConfigured();
};