import express from "express";
import nodemailer from "nodemailer";

const router = express.Router();

const buildTransporterConfig = () => {
  const host = process.env.SMTP_HOST;
  const port = Number(process.env.SMTP_PORT || 587);
  const secure =
    typeof process.env.SMTP_SECURE === "string"
      ? process.env.SMTP_SECURE === "true"
      : port === 465;

  const user = process.env.SMTP_USER;
  const pass = process.env.SMTP_PASS;

  const baseConfig = {
    host,
    port,
    secure,
  };

  if (user && pass) {
    baseConfig.auth = { user, pass };
  }

  return baseConfig;
};

router.post("/contact", async (req, res) => {
  const { name, email, subject, message, consent } = req.body || {};

  console.info("📨  Requête contact reçue", {
    name,
    email,
    subject,
    consent,
  });

  if (!name || !email || !subject || !message) {
    return res.status(400).json({
      message:
        "Merci de compléter tous les champs requis avant d'envoyer votre message.",
    });
  }

  const recipient =
    process.env.CONTACT_RECIPIENT || "sebastien@octopusdesign.fr";
  const fromAddress =
    process.env.CONTACT_FROM ||
    process.env.SMTP_FROM ||
    process.env.SMTP_USER ||
    "no-reply@octopusdesign.fr";

  try {
    const transporter = nodemailer.createTransport(buildTransporterConfig());

    const mailSubject = subject.trim()
      ? `[Site Octopus Design] ${subject.trim()}`
      : "Nouveau message depuis le site Octopus Design";

    const consentLabel = consent ? "✅ Consentement donné" : "❌ Consentement non fourni";

    const textBody = `
Nom : ${name}
E-mail : ${email}
Consentement : ${consentLabel}

Message :
${message}
`;

    const htmlBody = `
      <p><strong>Nom :</strong> ${name}</p>
      <p><strong>E-mail :</strong> ${email}</p>
      <p><strong>Consentement :</strong> ${consentLabel}</p>
      <p><strong>Message :</strong></p>
      <p>${message.replace(/\n/g, "<br />")}</p>
    `;

    // Vérifie la connexion SMTP avant d'essayer d'envoyer
    await transporter.verify();

    const mailOptions = {
      from: `"Octopus Design" <${fromAddress}>`,
      to: recipient,
      replyTo: email,
      subject: mailSubject,
      text: textBody,
      html: htmlBody,
    };

    await transporter.sendMail(mailOptions);

    console.info(
      "✅ Email de contact envoyé avec succès",
      JSON.stringify(
        {
          to: recipient,
          replyTo: email,
          subject: mailSubject,
        },
        null,
        2
      )
    );

    return res.status(200).json({
      message: "Votre message a bien été envoyé. Merci pour votre confiance !",
    });
  } catch (error) {
    console.error(
      "❌ Erreur lors de l'envoi du mail de contact :",
      error?.stack || error?.message || error
    );
    return res.status(500).json({
      message:
        "Impossible d'envoyer votre message pour le moment. Merci de réessayer plus tard.",
    });
  }
});

export default router;