feat(akses): batasi teknisi & kolektor sesuai wilayah tugas (port dari upstream)

- techService: getTechAreaWhere + canTechAccessCustomer, filter pool/stats
- techPortal: filter peta, ODP, daftar perangkat; guard perangkat per wilayah; area pelanggan baru dipaksa sesuai wilayah
- customerService: getCollectorCustomerWhere + canCollectorAccessCustomer (multi-area)
- collectorPortal: daftar tagihan pakai helper; tolak bayar/cetak/kirim PDF di luar wilayah
- customerAPI: dashboard & pay-bill kolektor dibatasi wilayah
- tests/unit/area-access.test.js: self-check logika area

routes/collectorPortal.js

@@ -177,16 +177,10 @@ router.get('/', requireCollectorSession, (req, res) => {
   const todayDay = now.getDate();
 
   const collectorId = Number(req.session.collectorId || 0);
-  const collectorObj = db.prepare('SELECT area FROM collectors WHERE id = ?').get(collectorId);
-  const collectorArea = String(collectorObj?.area || req.session.collectorArea || '').trim();
-  req.session.collectorArea = collectorArea;
+  const collectorObj = db.prepare('SELECT id, area FROM collectors WHERE id = ?').get(collectorId);
+  req.session.collectorArea = String(collectorObj?.area || req.session.collectorArea || '').trim();
 
-  let collectorWhere = '(c.collector_id = ? OR c.collector_id IS NULL)';
-  let collectorParams = [collectorId];
-  if (collectorArea) {
-    collectorWhere = '(c.collector_id = ? OR ((c.collector_id IS NULL OR c.collector_id = 0) AND LOWER(TRIM(c.area)) = LOWER(TRIM(?))))';
-    collectorParams = [collectorId, collectorArea];
-  }
+  const { where: collectorWhere, params: collectorParams } = customerSvc.getCollectorCustomerWhere(collectorObj, 'c');
   
   let q = `
     SELECT c.id as customer_id,
@@ -351,6 +345,14 @@ router.post('/payment-request', requireCollectorSession, express.urlencoded({ ex
     if (!inv) throw new Error('Tagihan tidak ditemukan');
     if (String(inv.status || '').toLowerCase() === 'paid') throw new Error('Tagihan sudah lunas');
 
+    {
+      const collectorIdCheck = Number(req.session.collectorId || 0);
+      const invCust = customerSvc.getCustomerById(inv.customer_id);
+      if (!customerSvc.canCollectorAccessCustomer(collectorIdCheck, invCust)) {
+        throw new Error('Tagihan ini di luar wilayah/tugas Anda');
+      }
+    }
+
     const existingPending = db.prepare(`
       SELECT id FROM collector_payment_requests
       WHERE invoice_id = ? AND status = 'pending'
@@ -472,6 +474,9 @@ router.get('/invoice/:id/print-thermal', requireCollectorSession, (req, res) =>
 
     const customer = customerSvc.getCustomerById(invoice.customer_id);
     if (!customer) return res.status(404).send('Data pelanggan tidak ditemukan');
+    if (!customerSvc.canCollectorAccessCustomer(Number(req.session.collectorId || 0), customer)) {
+      return res.status(403).send('Invoice di luar wilayah tugas Anda');
+    }
     const settings = getSettings();
 
     res.render('collector/print_thermal', {
@@ -498,6 +503,9 @@ router.post('/invoice/:id/send-pdf-wa', requireCollectorSession, async (req, res
 
     const customer = customerSvc.getCustomerById(inv.customer_id);
     if (!customer || !customer.phone) return res.json({ success: false, message: 'Nomor HP pelanggan tidak valid' });
+    if (!customerSvc.canCollectorAccessCustomer(Number(req.session.collectorId || 0), customer)) {
+      return res.json({ success: false, message: 'Invoice di luar wilayah tugas Anda' });
+    }
 
     const settings = getSettings();
     const pdfBuffer = await pdfSvc.generateInvoicePdfBuffer(inv, customer, settings);

routes/customerAPI.js

@@ -740,6 +740,13 @@ router.get('/app/collector/dashboard', requireCollectorApiAuth, (req, res) => {
     const curMonth = now.getMonth() + 1;
     const curYear = now.getFullYear();
 
+    const isFullAdmin = req.collector?.role === 'admin' || req.collector?.role === 'root';
+    const collectorId = Number(req.collector?.collectorId || req.collector?.id || 0);
+    const collector = collectorId
+      ? db.prepare('SELECT id, name, area, auto_approve FROM collectors WHERE id = ?').get(collectorId)
+      : null;
+    const colFilter = (!isFullAdmin && collector) ? customerSvc.getCollectorCustomerWhere(collector, 'c') : null;
+
     let q = `
       SELECT c.id, c.name, c.phone, c.address, c.status, c.area, c.isolate_day, c.pppoe_username,
              p.name as package_name, p.price as package_price,
@@ -752,6 +759,11 @@ router.get('/app/collector/dashboard', requireCollectorApiAuth, (req, res) => {
     `;
     const params = [curMonth, curYear];
 
+    if (colFilter) {
+      q += ` AND ${colFilter.where}`;
+      params.push(...colFilter.params);
+    }
+
     if (filterStatus === 'unpaid') {
       q += ` AND (i.status = 'unpaid' OR i.status IS NULL)`;
     } else if (filterStatus === 'today') {
@@ -770,6 +782,7 @@ router.get('/app/collector/dashboard', requireCollectorApiAuth, (req, res) => {
     q += ` ORDER BY (CASE WHEN c.status = 'suspended' THEN 0 WHEN i.status = 'unpaid' THEN 1 ELSE 2 END), c.name ASC LIMIT 150`;
     const list = db.prepare(q).all(...params) || [];
 
+    const statsWhere = colFilter ? ` WHERE ${colFilter.where}` : '';
     const stats = db.prepare(`
       SELECT 
         SUM(CASE WHEN (i.status = 'unpaid' OR i.status IS NULL) THEN 1 ELSE 0 END) as unpaid_count,
@@ -779,7 +792,8 @@ router.get('/app/collector/dashboard', requireCollectorApiAuth, (req, res) => {
       FROM customers c
       LEFT JOIN packages p ON p.id = c.package_id
       LEFT JOIN invoices i ON i.customer_id = c.id AND i.period_month = ? AND i.period_year = ?
-    `).get(todayDay, curMonth, curYear) || {};
+      ${statsWhere}
+    `).get(todayDay, curMonth, curYear, ...(colFilter ? colFilter.params : [])) || {};
 
     res.json({
       success: true,
@@ -819,7 +833,17 @@ router.post('/app/collector/pay-bill', requireCollectorApiAuth, async (req, res)
     if (!inv) return res.status(404).json({ success: false, message: 'Tagihan tidak ditemukan' });
 
     const collectorId = Number(req.collector?.collectorId || req.collector?.id || 0);
-    const collector = collectorId ? db.prepare('SELECT id, name, auto_approve FROM collectors WHERE id = ?').get(collectorId) : null;
+    const collector = collectorId ? db.prepare('SELECT id, name, area, auto_approve FROM collectors WHERE id = ?').get(collectorId) : null;
+
+    const isFullAdmin = req.collector?.role === 'admin' || req.collector?.role === 'root';
+    if (!isFullAdmin && collector) {
+      const cust = customerSvc.getCustomerById(inv.customer_id);
+      if (!cust) return res.status(404).json({ success: false, message: 'Pelanggan tidak ditemukan' });
+      if (!customerSvc.canCollectorAccessCustomer(collector, cust)) {
+        return res.status(403).json({ success: false, message: 'Akses ditolak: pelanggan di luar wilayah/tugas Anda' });
+      }
+    }
+
     const collectorName = collector?.name || req.collector?.name || 'Kolektor Lapangan';
     const isAutoApprove = collector && collector.auto_approve === 1;
 

routes/techPortal.js

@@ -176,7 +176,7 @@ router.get('/', requireTechSession, (req, res) => {
 
 // --- OPEN TICKETS (Pool) ---
 router.get('/pool', requireTechSession, (req, res) => {
-  const openTickets = techSvc.getOpenTickets();
+  const openTickets = techSvc.getOpenTickets(req.session.techId);
   res.render('tech/pool', {
     title: 'Tiket Baru', 
     company: company(), 
@@ -201,8 +201,15 @@ router.get('/history', requireTechSession, (req, res) => {
 
 // --- NETWORK MAP ---
 router.get('/map', requireTechSession, (req, res) => {
-  const customers = customerSvc.getAllCustomers();
-  const odps = odpSvc.getAllOdps();
+  const tech = techSvc.getTechById(req.session.techId);
+  let customers = customerSvc.getAllCustomers();
+  let odps = odpSvc.getAllOdps();
+
+  const filter = tech ? techSvc.getTechAreaWhere(tech, 'c') : null;
+  if (filter && filter.isRestricted) {
+    customers = customers.filter(c => filter.areas.includes(String(c.area || '').trim().toLowerCase()));
+    odps = odps.filter(o => !o.area || filter.areas.includes(String(o.area || '').trim().toLowerCase()));
+  }
   
   res.render('tech/map', { 
     title: 'Peta Jaringan', 
@@ -346,7 +353,12 @@ router.get('/monitoring', requireTechSession, async (req, res) => {
 // --- CREATE CUSTOMER (Technician) ---
 router.get('/customers/new', requireTechSession, (req, res) => {
   const packages = customerSvc.getAllPackages();
-  const odps = odpSvc.getAllOdps();
+  let odps = odpSvc.getAllOdps();
+  const tech = techSvc.getTechById(req.session.techId);
+  const filter = tech ? techSvc.getTechAreaWhere(tech, 'c') : null;
+  if (filter && filter.isRestricted) {
+    odps = odps.filter(o => !o.area || filter.areas.includes(String(o.area || '').trim().toLowerCase()));
+  }
   const routers = mikrotikService.getAllRouters();
   const olts = oltSvc.getAllOlts();
   res.render('tech/create_customer', {
@@ -366,8 +378,20 @@ router.post('/customers', requireTechSession, express.urlencoded({ extended: tru
     const name = String(req.body.name || '').trim();
     if (!name) throw new Error('Nama pelanggan wajib diisi');
 
+    const tech = techSvc.getTechById(req.session.techId);
+    const areaFilter = tech ? techSvc.getTechAreaWhere(tech, 'c') : null;
+    let areaInput = String(req.body.area || '').trim();
+    if (areaFilter && areaFilter.isRestricted) {
+      if (!areaInput) {
+        areaInput = areaFilter.areas[0];
+      } else if (!areaFilter.areas.includes(areaInput.toLowerCase())) {
+        throw new Error(`Anda hanya dapat mendaftarkan pelanggan di wilayah tugas Anda (${tech.area})`);
+      }
+    }
+
     const customerData = {
       name,
+      area: areaInput,
       phone: String(req.body.phone || '').trim(),
       email: String(req.body.email || '').trim(),
       nik: String(req.body.nik || '').trim(),
@@ -461,6 +485,16 @@ router.post('/customers', requireTechSession, express.urlencoded({ extended: tru
 // API Endpoints for Technician
 const customerDevice = require('../services/customerDeviceService');
 
+// Teknisi hanya boleh menyentuh perangkat pelanggan di wilayahnya.
+function checkTechTagAccess(req, tag) {
+  const tech = req.session?.techId ? techSvc.getTechById(req.session.techId) : null;
+  const filter = tech ? techSvc.getTechAreaWhere(tech, 'c') : null;
+  if (!filter || !filter.isRestricted) return true;
+  const cust = customerSvc.findCustomerByAny(tag);
+  if (!cust) return true;
+  return filter.areas.includes(String(cust.area || '').trim().toLowerCase());
+}
+
 router.get('/api/mikrotik/pppoe-users', requireTechSession, async (req, res) => {
   try {
     const routerId = req.query.routerId ? Number(req.query.routerId) : null;
@@ -499,10 +533,15 @@ router.get('/api/odps/:id/ports', requireTechSession, (req, res) => {
 router.get('/api/devices', requireTechSession, async (req, res) => {
   try {
     const { search, status, acs, limit = 999999, offset = 0 } = req.query;
-    const customers = db.prepare('SELECT id, name, phone, pppoe_username, genieacs_tag FROM customers').all();
+    const tech = techSvc.getTechById(req.session.techId);
+    const areaFilter = tech ? techSvc.getTechAreaWhere(tech, 'c') : null;
+    const customers = db.prepare('SELECT id, name, phone, pppoe_username, genieacs_tag, area FROM customers').all();
+    const allowedCustomerIds = new Set();
     const byPppoe = new Map();
     const byTag = new Map();
     for (const c of customers) {
+      if (areaFilter && areaFilter.isRestricted && !areaFilter.areas.includes(String(c.area || '').trim().toLowerCase())) continue;
+      allowedCustomerIds.add(c.id);
       const pu = String(c.pppoe_username || '').trim().toLowerCase();
       const tg = String(c.genieacs_tag || '').trim();
       if (pu) byPppoe.set(pu, c);
@@ -549,6 +588,10 @@ router.get('/api/devices', requireTechSession, async (req, res) => {
       };
     });
 
+    if (areaFilter && areaFilter.isRestricted) {
+      devices = devices.filter(d => d.customerId && allowedCustomerIds.has(d.customerId));
+    }
+
     if (search) {
       const s = search.toLowerCase();
       devices = devices.filter(d => 
@@ -575,6 +618,7 @@ router.get('/api/devices', requireTechSession, async (req, res) => {
 
 router.get('/api/device/:tag', requireTechSession, async (req, res) => {
   try {
+    if (!checkTechTagAccess(req, req.params.tag)) return res.status(403).json({ error: 'Perangkat di luar wilayah tugas Anda' });
     const data = await customerDevice.getCustomerDeviceData(req.params.tag);
     if (!data || data.status === 'Tidak ditemukan') return res.status(404).json({ error: 'Device not found' });
     res.json(data);
@@ -584,6 +628,7 @@ router.get('/api/device/:tag', requireTechSession, async (req, res) => {
 });
 
 router.post('/api/device/:tag/ssid', requireTechSession, express.json(), async (req, res) => {
+  if (!checkTechTagAccess(req, req.params.tag)) return res.status(403).json({ error: 'Perangkat di luar wilayah tugas Anda' });
   const { ssid } = req.body;
   if (!ssid) return res.status(400).json({ error: 'SSID required' });
   const ok = await customerDevice.updateSSID(req.params.tag, ssid);
@@ -616,6 +661,7 @@ router.post('/api/device/:tag/ssid', requireTechSession, express.json(), async (
 });
 
 router.post('/api/device/:tag/password', requireTechSession, express.json(), async (req, res) => {
+  if (!checkTechTagAccess(req, req.params.tag)) return res.status(403).json({ error: 'Perangkat di luar wilayah tugas Anda' });
   const { password } = req.body;
   if (!password || password.length < 8) return res.status(400).json({ error: 'Password minimal 8 karakter' });
   const ok = await customerDevice.updatePassword(req.params.tag, password);
@@ -648,6 +694,7 @@ router.post('/api/device/:tag/password', requireTechSession, express.json(), asy
 });
 
 router.post('/api/device/:tag/reboot', requireTechSession, async (req, res) => {
+  if (!checkTechTagAccess(req, req.params.tag)) return res.status(403).json({ error: 'Perangkat di luar wilayah tugas Anda' });
   const result = await customerDevice.requestReboot(req.params.tag);
   res.json(result);
 });

services/customerService.js

@@ -71,6 +71,59 @@ function calculateExpiredAt(startDateStr, durationDays = 30) {
   return `${y}-${m}-${day} 23:59:59`;
 }
 
+/**
+ * Batas wilayah tugas kolektor (dukung multi-area dipisah koma).
+ * area kosong / "semua" / "all" = tanpa batas wilayah.
+ */
+function getCollectorCustomerWhere(collector, tableAlias = 'c') {
+  let col = collector;
+  if (typeof collector === 'number' || typeof collector === 'string') {
+    col = db.prepare('SELECT id, area FROM collectors WHERE id = ?').get(Number(collector));
+  }
+  const colId = Number(col?.id || 0);
+  const areas = String(col?.area || '')
+    .split(',')
+    .map(a => a.trim().toLowerCase())
+    .filter(a => a.length > 0 && a !== 'semua' && a !== 'all');
+
+  if (areas.length > 0) {
+    const placeholders = areas.map(() => '?').join(', ');
+    return {
+      where: `(LOWER(TRIM(${tableAlias}.area)) IN (${placeholders}) AND (${tableAlias}.collector_id = ? OR ${tableAlias}.collector_id IS NULL OR ${tableAlias}.collector_id = 0))`,
+      params: [...areas, colId],
+      isRestricted: true,
+      areas,
+    };
+  }
+  return {
+    where: `(${tableAlias}.collector_id = ? OR ${tableAlias}.collector_id IS NULL OR ${tableAlias}.collector_id = 0)`,
+    params: [colId],
+    isRestricted: false,
+    areas: [],
+  };
+}
+
+function canCollectorAccessCustomer(collector, customer) {
+  if (!collector || !customer) return false;
+  let col = collector;
+  if (typeof collector === 'number' || typeof collector === 'string') {
+    col = db.prepare('SELECT id, area FROM collectors WHERE id = ?').get(Number(collector));
+  }
+  const colId = Number(col?.id || 0);
+  const custColId = Number(customer?.collector_id || 0);
+  if (custColId > 0 && custColId !== colId) return false;
+
+  const areas = String(col?.area || '')
+    .split(',')
+    .map(a => a.trim().toLowerCase())
+    .filter(a => a.length > 0 && a !== 'semua' && a !== 'all');
+  if (areas.length > 0) {
+    const custArea = String(customer?.area || '').trim().toLowerCase();
+    return !!custArea && areas.includes(custArea);
+  }
+  return true;
+}
+
 function getAllCustomers(search = '', routerId = null, filterStatus = '', filterArea = '', opts = {}) {
   const now = getCurrentDateInTimezone();
   const month = now.getMonth() + 1;
@@ -955,7 +1008,7 @@ Dihapus: ${removed.join(', ') || '-'}`);
 }
 
 module.exports = {
-  getAllCustomers, getAllCustomerAreas, getCustomerById, createCustomer, updateCustomer, deleteCustomer, bulkDeleteCustomers, getCustomerStats,
+  getAllCustomers, getAllCustomerAreas, getCollectorCustomerWhere, canCollectorAccessCustomer, getCustomerById, createCustomer, updateCustomer, deleteCustomer, bulkDeleteCustomers, getCustomerStats,
   getAllPackages, getPackageById, createPackage, updatePackage, deletePackage,
   suspendCustomer, activateCustomer, autoDeactivateOverdueCustomers, generatePppoeAccount, findCustomerByAny, findCustomerForLogin, updateCustomerCablePath,
   resetPromoCyclesUsed, getEffectiveRouterId

services/techService.js

@@ -9,20 +9,56 @@ function getTechById(id) {
   return db.prepare('SELECT id, username, name, phone, area FROM technicians WHERE id = ?').get(id);
 }
 
+/**
+ * Batas wilayah tugas teknisi.
+ * area kosong / "semua" / "all" = tanpa batas (semua wilayah).
+ */
+function getTechAreaWhere(technician, tableAlias = 'c') {
+  let tech = technician;
+  if (typeof technician === 'number' || typeof technician === 'string') {
+    tech = db.prepare('SELECT id, area FROM technicians WHERE id = ?').get(Number(technician));
+  }
+  const areas = String(tech?.area || '')
+    .split(',')
+    .map(a => a.trim().toLowerCase())
+    .filter(a => a.length > 0 && a !== 'semua' && a !== 'all');
+
+  if (areas.length > 0) {
+    const placeholders = areas.map(() => '?').join(', ');
+    return {
+      where: `LOWER(TRIM(${tableAlias}.area)) IN (${placeholders})`,
+      params: areas,
+      isRestricted: true,
+      areas,
+    };
+  }
+  return { where: '1=1', params: [], isRestricted: false, areas: [] };
+}
+
+function canTechAccessCustomer(technician, customer) {
+  if (!technician) return false;
+  const filter = getTechAreaWhere(technician);
+  if (!filter.isRestricted) return true;
+  const custArea = String(customer?.area || '').trim().toLowerCase();
+  return !!custArea && filter.areas.includes(custArea);
+}
+
 function getTechStats(techId) {
   const total = db.prepare("SELECT COUNT(*) as count FROM tickets WHERE technician_id = ?").get(techId).count;
   const inProgress = db.prepare("SELECT COUNT(*) as count FROM tickets WHERE technician_id = ? AND status = 'in_progress'").get(techId).count;
   const resolved = db.prepare("SELECT COUNT(*) as count FROM tickets WHERE technician_id = ? AND status = 'resolved'").get(techId).count;
 
-  // Ambil open tickets yang belum ada teknisinya atau di-assign ke teknisi ini
-  const open = db.prepare("SELECT COUNT(*) as count FROM tickets WHERE status = 'open'").get().count;
+  const filter = techId ? getTechAreaWhere(techId, 'c') : null;
+  const open = filter && filter.isRestricted
+    ? db.prepare(`SELECT COUNT(*) as count FROM tickets t JOIN customers c ON t.customer_id = c.id WHERE t.status = 'open' AND ${filter.where}`).get(...filter.params).count
+    : db.prepare("SELECT COUNT(*) as count FROM tickets WHERE status = 'open'").get().count;
 
   return { total, open, inProgress, resolved };
 }
 
 function getAssignedTickets(techId) {
   return db.prepare(`
-    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address 
+    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address, c.area as customer_area 
     FROM tickets t 
     JOIN customers c ON t.customer_id = c.id 
     WHERE t.technician_id = ? AND t.status != 'resolved'
@@ -30,19 +66,21 @@ function getAssignedTickets(techId) {
   `).all(techId);
 }
 
-function getOpenTickets() {
+function getOpenTickets(techId = null) {
+  const filter = techId ? getTechAreaWhere(techId, 'c') : null;
+  const areaWhere = filter && filter.isRestricted ? `AND ${filter.where}` : '';
   return db.prepare(`
-    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address 
+    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address, c.area as customer_area
     FROM tickets t 
     JOIN customers c ON t.customer_id = c.id 
-    WHERE t.status = 'open'
+    WHERE t.status = 'open' ${areaWhere}
     ORDER BY t.created_at DESC
-  `).all();
+  `).all(...(filter && filter.isRestricted ? filter.params : []));
 }
 
 function getResolvedTickets(techId) {
   return db.prepare(`
-    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address 
+    SELECT t.*, c.name as customer_name, c.phone as customer_phone, c.address as customer_address, c.area as customer_area 
     FROM tickets t 
     JOIN customers c ON t.customer_id = c.id 
     WHERE t.technician_id = ? AND t.status = 'resolved'
@@ -52,11 +90,27 @@ function getResolvedTickets(techId) {
 
 function takeTicket(ticketId, techId) {
   let validTechId = Number(techId);
-  const exists = db.prepare('SELECT id FROM technicians WHERE id = ?').get(validTechId);
-  if (!exists) {
-    const fallback = db.prepare('SELECT id FROM technicians WHERE is_active = 1 ORDER BY id ASC LIMIT 1').get();
-    if (fallback) validTechId = fallback.id;
+  let tech = db.prepare('SELECT id, area FROM technicians WHERE id = ?').get(validTechId);
+  if (!tech) {
+    const fallback = db.prepare('SELECT id, area FROM technicians WHERE is_active = 1 ORDER BY id ASC LIMIT 1').get();
+    if (!fallback) throw new Error('Teknisi tidak ditemukan.');
+    validTechId = fallback.id;
+    tech = fallback;
   }
+
+  const ticket = db.prepare(`
+    SELECT t.id, t.customer_id, t.status, c.area as customer_area
+    FROM tickets t
+    LEFT JOIN customers c ON t.customer_id = c.id
+    WHERE t.id = ?
+  `).get(ticketId);
+
+  if (!ticket) throw new Error('Tiket tidak ditemukan.');
+  if (ticket.status !== 'open') throw new Error('Tiket sudah diambil oleh teknisi lain atau sudah selesai.');
+  if (ticket.customer_id && !canTechAccessCustomer(tech, { area: ticket.customer_area })) {
+    throw new Error(`Tiket ini berada di wilayah "${ticket.customer_area || 'Tanpa Area'}", di luar wilayah tugas Anda (${tech.area}).`);
+  }
+
   db.prepare("UPDATE tickets SET technician_id = ?, status = 'in_progress', updated_at = (NOW_LOCAL()) WHERE id = ?").run(validTechId, ticketId);
   return validTechId;
 }
@@ -102,6 +156,8 @@ function createTechnician(data) {
 module.exports = {
   authenticate,
   getTechById,
+  getTechAreaWhere,
+  canTechAccessCustomer,
   getTechStats,
   getAssignedTickets,
   getOpenTickets,

tests/unit/area-access.test.js

@@ -0,0 +1,72 @@
+/**
+ * Self-check: pembatasan wilayah teknisi & kolektor.
+ * Jalankan: node tests/unit/area-access.test.js
+ * DB dan modul berat di-stub supaya bisa jalan tanpa node_modules.
+ */
+const assert = require('assert');
+const path = require('path');
+
+function stub(rel, exports) {
+  const p = require.resolve(path.join(__dirname, '..', '..', rel));
+  require.cache[p] = { id: p, filename: p, loaded: true, exports };
+}
+
+const techRows = { 1: { id: 1, area: 'Area A, Area B' }, 2: { id: 2, area: '' }, 3: { id: 3, area: 'semua' } };
+const colRows = { 7: { id: 7, area: 'Area A' }, 8: { id: 8, area: '' } };
+
+const db = {
+  prepare(sql) {
+    return {
+      get(id) {
+        if (/FROM technicians/.test(sql)) return techRows[Number(id)];
+        if (/FROM collectors/.test(sql)) return colRows[Number(id)];
+        return undefined;
+      },
+      all() { return []; },
+      run() { return { changes: 1 }; },
+    };
+  },
+  exec() {},
+};
+
+stub('config/database', db);
+stub('config/logger', { logger: { info() {}, warn() {}, error() {}, debug() {} } });
+stub('config/settingsManager', { getCurrentDateInTimezone: () => new Date(), getSetting: () => '' });
+stub('services/customerIdService', { generateCustomerCode: () => 'C0001', backfillCustomerCodes: () => 0 });
+
+const tech = require('../../services/techService');
+const cust = require('../../services/customerService');
+
+// Teknisi: area dipisah koma -> dibatasi ke dua area
+const tf = tech.getTechAreaWhere(1, 'c');
+assert.strictEqual(tf.isRestricted, true);
+assert.deepStrictEqual(tf.areas, ['area a', 'area b']);
+assert.ok(tf.where.includes('IN (?, ?)'));
+
+// Teknisi tanpa area / "semua" -> tidak dibatasi
+assert.strictEqual(tech.getTechAreaWhere(2).isRestricted, false);
+assert.strictEqual(tech.getTechAreaWhere(3).isRestricted, false);
+
+// canTechAccessCustomer
+assert.strictEqual(tech.canTechAccessCustomer(1, { area: 'area b' }), true);
+assert.strictEqual(tech.canTechAccessCustomer(1, { area: 'area z' }), false);
+assert.strictEqual(tech.canTechAccessCustomer(1, { area: '' }), false);
+assert.strictEqual(tech.canTechAccessCustomer(2, { area: 'apa saja' }), true);
+assert.strictEqual(tech.canTechAccessCustomer(null, { area: 'area a' }), false);
+
+// Kolektor: pelanggan yang ditugaskan ke kolektor lain selalu ditolak
+assert.strictEqual(cust.canCollectorAccessCustomer(7, { area: 'area a', collector_id: 0 }), true);
+assert.strictEqual(cust.canCollectorAccessCustomer(7, { area: 'area a', collector_id: 7 }), true);
+assert.strictEqual(cust.canCollectorAccessCustomer(7, { area: 'area a', collector_id: 8 }), false);
+assert.strictEqual(cust.canCollectorAccessCustomer(7, { area: 'area z', collector_id: 0 }), false);
+assert.strictEqual(cust.canCollectorAccessCustomer(8, { area: 'area z', collector_id: 0 }), true);
+
+// Where kolektor memuat batas area + kolektor_id
+const cf = cust.getCollectorCustomerWhere(7, 'c');
+assert.strictEqual(cf.isRestricted, true);
+assert.deepStrictEqual(cf.params, ['area a', 7]);
+const cf2 = cust.getCollectorCustomerWhere(8, 'c');
+assert.strictEqual(cf2.isRestricted, false);
+assert.deepStrictEqual(cf2.params, [8]);
+
+console.log('OK: area-access (teknisi & kolektor)');