WORKFLOW-APP/app/api/appointments/route.ts

// app/api/appointments/route.ts
// GET  — list all director appointments (with expand)
// POST — create a new appointment, generate letter, email director

import { NextRequest, NextResponse } from "next/server";
import { fetchCollection, createRecord, updateRecordMultipart } from "@/lib/pb";
import { writeFileSync, readFileSync, unlinkSync } from "fs";
import { execSync } from "child_process";

export const dynamic = "force-dynamic";

// GET /api/appointments
export async function GET() {
  try {
    const data = await fetchCollection("ysterbaard_director_appointments", {
      perPage: 500,
      sort: "-created",
      expand: "director,company",
    });
    return NextResponse.json(data);
  } catch (err: unknown) {
    const msg = err instanceof Error ? err.message : String(err);
    return NextResponse.json({ error: msg }, { status: 500 });
  }
}

// POST /api/appointments
export async function POST(req: NextRequest) {
  try {
    const body = await req.json();
    const {
      director_id,
      company_id,
      director_email,
      director_cell,
      director_name,
      director_surname,
      company_name,
    } = body;

    if (!director_id || !company_id) {
      return NextResponse.json({ error: "director_id and company_id are required" }, { status: 400 });
    }

    // Generate a unique sign token
    const signToken = Math.random().toString(36).substring(2) + Date.now().toString(36);
    const today = new Date().toISOString().split("T")[0];
    const emailTo = director_email || "SJ@Dyfins.com";
    const fullName = [director_name, director_surname].filter(Boolean).join(" ");
    const appUrl = process.env.NEXT_PUBLIC_APP_URL || "http://localhost:3000";
    const signUrl = `${appUrl}/sign/${signToken}`;

    // 1. Create appointment record
    const record = await createRecord("ysterbaard_director_appointments", {
      director: director_id,
      company: company_id,
      status: "pending",
      sent_to: emailTo,
      sent_at: today,
      sign_token: signToken,
    });

    // 2. Generate letter HTML
    const letterHtml = buildLetterHtml({ directorName: fullName, companyName: company_name, date: today, signUrl });
    const htmlPath = `/tmp/appt-letter-${record.id}.html`;
    writeFileSync(htmlPath, letterHtml, "utf8");

    // 3. Convert to PDF
    const pdfPath = await htmlToPdf(htmlPath);

    // 4. Upload PDF to PB record
    const pdfBuf = readFileSync(pdfPath);
    const pdfFile = new File([pdfBuf], "appointment-letter.pdf", { type: "application/pdf" });
    await updateRecordMultipart("ysterbaard_director_appointments", record.id, {}, [{ field: "letter", file: pdfFile }]);

    // 5. Send email to director
    await sendAppointmentEmail({
      to: emailTo,
      directorName: fullName || "Director",
      companyName: company_name || "the Company",
      signUrl,
      pdfPath,
    });

    // 6. Update status to mail_sent
    await updateRecordMultipart("ysterbaard_director_appointments", record.id, { status: "mail_sent" }, []);

    return NextResponse.json({ id: record.id, sign_token: signToken }, { status: 201 });
  } catch (err: unknown) {
    const msg = err instanceof Error ? err.message : String(err);
    console.error("Appointment POST error:", msg);
    return NextResponse.json({ error: msg }, { status: 500 });
  }
}

// ─── Letter HTML builder ───────────────────────────────────────────────────

function buildLetterHtml(opts: {
  directorName: string;
  companyName: string;
  date: string;
  signUrl: string;
}): string {
  const { directorName, companyName, date, signUrl } = opts;
  return `<!DOCTYPE html>
<html>
<head><meta charset="utf-8"><style>
  body { font-family: Arial, sans-serif; font-size: 12pt; margin: 40px 60px; line-height: 1.6; color: #222; }
  .right { text-align: right; }
  h1 { font-size: 14pt; text-align: center; margin-bottom: 4px; font-weight: bold; }
  hr { border: none; border-top: 1px solid #333; margin: 8px 0 16px; }
  p { margin: 8px 0; }
</style></head>
<body>
  <div class="right">
    <p><strong>${directorName}</strong></p>
    <p>${date}</p>
  </div>
  <h1>LETTER OF APPOINTMENT AS DIRECTOR</h1>
  <hr />
  <p>Dear ${directorName},</p>
  <p>We are pleased to inform you that you have been appointed as a Director of <strong>${companyName}</strong>.</p>
  <p>Your appointment is subject to your formal acceptance in terms of section 70 of the Companies Act 71 of 2008.</p>
  <p><strong>To accept your appointment, please click the button below and draw your signature:</strong></p>
  <p style="text-align:center; margin: 24px 0;">
    <a href="${signUrl}" style="background:#0066cc;color:#fff;padding:12px 24px;border-radius:6px;text-decoration:none;font-size:13pt;">
      Accept Appointment &amp; Sign
    </a>
  </p>
  <p>Or copy this link into your browser:<br/><span style="color:#0066cc;font-size:10pt;word-break:break-all;">${signUrl}</span></p>
  <p>Please note that until your acceptance is received, your appointment is not complete.</p>
  <p>Yours sincerely,<br/><strong>The Board of ${companyName}</strong></p>
</body>
</html>`;
}

// ─── PDF conversion ───────────────────────────────────────────────────────

async function htmlToPdf(htmlPath: string): Promise<string> {
  const { execSync } = await import("child_process");
  const pdfPath = htmlPath.replace(".html", ".pdf");
  try {
    execSync(
      "/Applications/LibreOffice.app/Contents/MacOS/soffice --headless --convert-to pdf --outdir /tmp/ " + JSON.stringify(htmlPath),
      { timeout: 30 }
    );
  } catch {
    // try soffice directly
    execSync(
      `soffice --headless --convert-to pdf --outdir /tmp/ "${htmlPath}"`,
      { timeout: 30 }
    );
  }
  return pdfPath;
}

// ─── Email ───────────────────────────────────────────────────────────────

async function sendAppointmentEmail(opts: {
  to: string;
  directorName: string;
  companyName: string;
  signUrl: string;
  pdfPath: string;
}) {
  const { to, directorName, companyName, signUrl } = opts;

  const subject = `[${directorName}] Acceptance letter as director for ${companyName}`;
  const body = `Good day ${directorName}

Please find attached the letter to accept your appointment as director for ${companyName}.

Please click the link below to accept your appointment and sign:

${signUrl}

Regards`;

  const boundary = "----YSTERBAARD" + Date.now();
  const pdfBuf = readFileSync(opts.pdfPath);
  const pdfB64 = pdfBuf.toString("base64");

  const eml = `To: ${to}\r
From: SJ@Dyfins.com\r
Subject: ${subject}\r
MIME-Version: 1.0\r
Content-Type: multipart/mixed; boundary="${boundary}"\r
\r
--${boundary}\r
Content-Type: text/plain; charset="utf-8"\r
\r
${body}\r
--${boundary}\r
Content-Type: application/pdf; name="appointment-letter.pdf"\r
Content-Transfer-Encoding: base64\r
Content-Disposition: attachment; filename="appointment-letter.pdf"\r
\r
${pdfB64}\r
--${boundary}--\r
`;

  const emlPath = `/tmp/appt-email-${Date.now()}.eml`;
  writeFileSync(emlPath, eml, "utf8");

  try {
    execSync(`himalaya -a dyfins --backend smtp email send < "${emlPath}"`, { timeout: 30 });
  } finally {
    unlinkSync(emlPath);
    try { unlinkSync(opts.pdfPath); } catch { /* ok */ }
  }
}