/**
 * MOREMINIMORE - Contact Form Backend (Google Apps Script)
 * Per plan 2026-06-13 round 2 #4:
 *   Form submit → Apps Script doPost() → Google Sheet (log)
 *                                    → Email to contact@moreminimore.com
 *                                    → LINE Notify
 *
 * USER DEPLOYS THIS THEMSELVES (see README.md in same folder).
 * 1. Create new Apps Script project at https://script.google.com
 * 2. Paste this entire file into Code.gs
 * 3. Set Script Properties (Project Settings → Script Properties):
 *      SHEET_ID         — Google Sheet ID (from Sheet URL)
 *      LINE_NOTIFY_TOKEN — from https://notify-bot.line.me
 *      RECIPIENT_EMAIL   — contact@moreminimore.com (or any email)
 * 4. Create Google Sheet with these headers in row 1:
 *      timestamp | name | phone | email | service | message | variant | userAgent
 * 5. Deploy → New deployment → Type: Web app
 *      Execute as: Me
 *      Who has access: Anyone
 *    Copy the deployment URL.
 * 6. Add to moreminimore-astroreal/.env:
 *      PUBLIC_CONTACT_ENDPOINT=<paste deployment URL>
 */

/* ------------------------------------------------------------------ */
/*  CONFIG — read from Script Properties (set in Project Settings)    */
/* ------------------------------------------------------------------ */

function getConfig() {
  const props = PropertiesService.getScriptProperties();
  return {
    SHEET_ID: props.getProperty('SHEET_ID'),
    LINE_NOTIFY_TOKEN: props.getProperty('LINE_NOTIFY_TOKEN'),
    RECIPIENT_EMAIL: props.getProperty('RECIPIENT_EMAIL') || 'contact@moreminimore.com',
  };
}

/* ------------------------------------------------------------------ */
/*  HANDLER — POST /exec (or /dev)                                    */
/* ------------------------------------------------------------------ */

/**
 * Handle form submission. Expects JSON body:
 * {
 *   name, phone, email, service, message, variant, userAgent, submittedAt
 * }
 */
function doPost(e) {
  try {
    const data = JSON.parse(e.postData.contents);
    const config = getConfig();

    // 1. Log to Google Sheet
    let rowId = null;
    if (config.SHEET_ID) {
      const sheet = SpreadsheetApp.openById(config.SHEET_ID).getActiveSheet();
      const row = sheet.appendRow([
        new Date(),                    // timestamp
        data.name || '',
        data.phone || '',
        data.email || '',
        data.service || '',
        data.message || '',
        data.variant || 'full',
        data.userAgent || '',
      ]);
      rowId = row.getRange().getRow();
    }

    // 2. Send email
    const subject = `[moreminimore contact] ${data.service || 'general'} — ${data.name || data.phone || 'unknown'}`;
    const body = formatEmailBody(data);
    MailApp.sendEmail({
      to: config.RECIPIENT_EMAIL,
      subject: subject,
      body: body,
      replyTo: data.email || undefined,
    });

    // 3. Send LINE Notify
    if (config.LINE_NOTIFY_TOKEN) {
      const lineMessage = formatLineMessage(data);
      UrlFetchApp.fetch('https://notify-api.line.me/api/notify', {
        method: 'POST',
        headers: {
          'Authorization': 'Bearer ' + config.LINE_NOTIFY_TOKEN,
          'Content-Type': 'application/x-www-form-urlencoded',
        },
        payload: { message: lineMessage },
        muteHttpExceptions: true,
      });
    }

    return ContentService
      .createTextOutput(JSON.stringify({ ok: true, id: rowId }))
      .setMimeType(ContentService.MimeType.JSON);

  } catch (err) {
    return ContentService
      .createTextOutput(JSON.stringify({ ok: false, error: err.toString() }))
      .setMimeType(ContentService.MimeType.JSON);
  }
}

/* ------------------------------------------------------------------ */
/*  FORMATTERS                                                         */
/* ------------------------------------------------------------------ */

function formatEmailBody(data) {
  return [
    'New contact form submission',
    '',
    '---',
    'Name:    ' + (data.name || '-'),
    'Phone:   ' + (data.phone || '-'),
    'Email:   ' + (data.email || '-'),
    'Service: ' + (data.service || '-'),
    'Variant: ' + (data.variant || 'full'),
    '---',
    '',
    'Message:',
    data.message || '(empty)',
    '',
    '---',
    'Submitted: ' + (data.submittedAt || new Date().toISOString()),
    'UserAgent: ' + (data.userAgent || 'unknown'),
  ].join('\n');
}

function formatLineMessage(data) {
  const lines = [
    '🔔 moreminimore contact',
    '',
    '👤 ' + (data.name || data.phone || 'unknown'),
    '📞 ' + (data.phone || '-'),
    '✉  ' + (data.email || '-'),
    '🎯 ' + (data.service || 'general'),
  ];
  if (data.message) {
    lines.push('');
    lines.push(data.message.length > 200 ? data.message.slice(0, 200) + '...' : data.message);
  }
  return lines.join('\n');
}

/* ------------------------------------------------------------------ */
/*  TEST (optional — call testDoPost() from Apps Script editor)        */
/* ------------------------------------------------------------------ */

function testDoPost() {
  const mockEvent = {
    postData: {
      contents: JSON.stringify({
        name: 'Test User',
        phone: '080-123-4567',
        email: 'test@example.com',
        service: 'webdev',
        message: 'This is a test message',
        variant: 'full',
        userAgent: 'test',
        submittedAt: new Date().toISOString(),
      }),
    },
  };
  Logger.log(doPost(mockEvent).getContent());
}