full

controllers/application/provincesController.js

@@ -1,15 +1,23 @@
-const { ProvinceModel } = require('../../models/StateCity')
-
-const getProvinces = async (req, res, next) => {
-  try {
-    const provinces = await ProvinceModel.find({})
-    res.status(200).json({
-      provinces
-    })
-  } catch (err) {
-    res.status(500).send('Internal Server Error')
-  }
-}
-module.exports = {
-  getProvinces
-}
+const { ProvinceModel } = require('../../models/StateCity')
+
+// Iran's id in data/geo/countries.json — callers that omit country_id keep getting
+// exactly the old Iran-only province list (unchanged behavior for existing screens).
+const DEFAULT_COUNTRY_ID = 103
+
+const getProvinces = async (req, res, next) => {
+  try {
+    const { country_id: countryIdParam } = req.query
+    const countryId = countryIdParam !== undefined ? Number(countryIdParam) : DEFAULT_COUNTRY_ID
+    const provinces = await ProvinceModel.find(
+      Number.isFinite(countryId) ? { country_id: countryId } : {}
+    )
+    res.status(200).json({
+      provinces
+    })
+  } catch (err) {
+    res.status(500).send('Internal Server Error')
+  }
+}
+module.exports = {
+  getProvinces
+}