Files
doormile_backend/middlewares/city_gate.go
Suriya c91c887726 Add assignment engine, FCM, WebSockets, city gate, and internal APIs
- internal/assignment: GEORADIUS miler assignment with retry/escalation,
  customer-side provider scoring, FCM notifications on assign
- internal/notify: Firebase Admin SDK (FCM) client initialisation
- internal/ws: WebSocket handlers for live parcel tracking and
  customer↔miler chat
- middlewares: city gate (pincode prefix validation), internal API key
  auth, WebSocket JWT auth
- controllers: InternalNotify + InternalReassign for machine-to-machine
  calls; pricing helpers wired into CreateCustomerBooking and CreateCRMBooking
- routes: /internal/*, /ws/bookings/:id/track, /ws/bookings/:id/chat
- models/users, models/doormile_pricing: new fields for device tokens,
  assignment state, pricing bands
- seed_data.sql: initial pricing seed rows

.env and Firebase service-account JSON intentionally excluded.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-25 12:31:53 +05:30

41 lines
1.1 KiB
Go

package middlewares
import (
"encoding/json"
"strings"
"github.com/gofiber/fiber/v2"
)
// operatingCityPrefixes maps supported 3-digit pincode prefixes to city names.
var operatingCityPrefixes = map[string]string{
"641": "Coimbatore",
"600": "Chennai",
"560": "Bengaluru",
"500": "Hyderabad",
}
// CityGateMiddleware rejects bookings from pincodes outside Doormile's operating cities.
// It reads pickuppincode from the JSON body without consuming it, so the downstream
// controller can still call c.BodyParser() as usual.
func CityGateMiddleware(c *fiber.Ctx) error {
var body struct {
Pickuppincode string `json:"pickuppincode"`
}
if err := json.Unmarshal(c.Body(), &body); err != nil || body.Pickuppincode == "" {
return c.Next()
}
pincode := strings.TrimSpace(body.Pickuppincode)
if len(pincode) >= 3 {
if _, ok := operatingCityPrefixes[pincode[:3]]; ok {
return c.Next()
}
}
return c.Status(fiber.StatusUnprocessableEntity).JSON(fiber.Map{
"error": "We are not yet operating in your city. Stay tuned!",
"code": "CITY_NOT_SUPPORTED",
})
}