import nodeMailer from 'nodemailer';

export default async function sendMail({
  emailId,
  link,
  type,
  status,
  designation,
}) {
  // Check if we have email password in env
  if (!process.env.TravelPolicyEmail || !process.env.TravelPolicyEmailPass) {
    console.log("No email password found in .env, so I can't send emails.");
    return;
  }

    console.log("parametrs", emailId, link, type, status, designation);

    const transporter = nodeMailer.createTransport({
        service: 'gmail',
        port: 465,
        secure: true,
        logger: true,
        debug: true,
        secureConnection: false,
        auth: {
            user: process.env.TravelPolicyEmail,
            pass: process.env.TravelPolicyEmailPass,
        },
        tls: {
            rejectUnauthorized: true,
        },
    });

    let mailOptions;

    switch (type) {
        case 'validator':
            mailOptions = {
                from: process.env.TravelPolicyEmail,
                to: emailId,
                subject: 'You have a new travel policy application to review',
                html: `
          <p>You have a new travel policy application to review. Please click on the link below to review the application:</p>
          <a href=${link}>Review Application</a>
          <p>Thank you.</p>
        `,
            };
            break;
        case 'applicant':
            mailOptions = {
                from: process.env.TravelPolicyEmail,
                to: emailId,
                subject: `Your travel policy application status: ${status}`,
                html: `
          <p>Your travel policy application has been ${status} by ${designation}. Please click on the link below to view the status of your application:</p>
          <a href=${link}>View Application</a>
          <p>Thank you.</p>
        `,
      };
      break;
    case "accounts":
      mailOptions = {
        from: process.env.TravelPolicyEmail,
        to: emailId,
        subject: "Transfer money to the applicant",
        html: `
                <p>Please transfer the travel policy amount to the applicant's account. Click on the link below to view the application:</p>`,
      };
      break;
    default:
      throw new Error("Invalid email type");
  }

    try {
        await transporter.sendMail(mailOptions);
        console.log('Email sent successfully');
        return true;
    } catch (error) {
        console.error('Error sending email:', error);
        return { status: 'error', message: 'Verification code not sent' };
    }
}