Updated seat class and coach mangement

apps/edr-passenger-api/prisma/migrations/20260516000000_seat_class_model/migration.sql

@@ -0,0 +1,52 @@
+-- CreateTable
+CREATE TABLE "SeatClass" (
+    "id"          TEXT         NOT NULL,
+    "name"        TEXT         NOT NULL,
+    "description" TEXT,
+    "basePrice"   INTEGER      NOT NULL,
+    "isActive"    BOOLEAN      NOT NULL DEFAULT true,
+    "createdAt"   TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt"   TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "SeatClass_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX "SeatClass_name_key" ON "SeatClass"("name");
+
+-- Seed default seat classes so existing coaches can be migrated
+INSERT INTO "SeatClass" ("id", "name", "description", "basePrice", "isActive", "createdAt", "updatedAt")
+VALUES
+  ('sc_economy',  'Economy Seat', 'Standard economy seating',  45000, true, NOW(), NOW()),
+  ('sc_business', 'Business Seat','Comfortable business class', 90000, true, NOW(), NOW()),
+  ('sc_first',    'VIP Bed',      'First class VIP bed',       135000, true, NOW(), NOW());
+
+-- Add seatClassId column to Coach (nullable first for migration safety)
+ALTER TABLE "Coach" ADD COLUMN "seatClassId" TEXT;
+
+-- Map existing serviceClass enum values to new SeatClass ids
+UPDATE "Coach" SET "seatClassId" = 'sc_economy'  WHERE "serviceClass" = 'ECONOMY';
+UPDATE "Coach" SET "seatClassId" = 'sc_business' WHERE "serviceClass" = 'BUSINESS';
+UPDATE "Coach" SET "seatClassId" = 'sc_first'    WHERE "serviceClass" = 'FIRST';
+
+-- Make seatClassId NOT NULL now that all rows are populated
+ALTER TABLE "Coach" ALTER COLUMN "seatClassId" SET NOT NULL;
+
+-- Drop old serviceClass column
+ALTER TABLE "Coach" DROP COLUMN "serviceClass";
+
+-- Add seatClassId to FareRule
+ALTER TABLE "FareRule" ADD COLUMN "seatClassId" TEXT;
+
+UPDATE "FareRule" SET "seatClassId" = 'sc_economy'  WHERE "serviceClass" = 'ECONOMY';
+UPDATE "FareRule" SET "seatClassId" = 'sc_business' WHERE "serviceClass" = 'BUSINESS';
+UPDATE "FareRule" SET "seatClassId" = 'sc_first'    WHERE "serviceClass" = 'FIRST';
+
+ALTER TABLE "FareRule" ALTER COLUMN "seatClassId" SET NOT NULL;
+ALTER TABLE "FareRule" DROP COLUMN "serviceClass";
+
+-- AddForeignKey
+ALTER TABLE "Coach" ADD CONSTRAINT "Coach_seatClassId_fkey"
+    FOREIGN KEY ("seatClassId") REFERENCES "SeatClass"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+ALTER TABLE "FareRule" ADD CONSTRAINT "FareRule_seatClassId_fkey"
+    FOREIGN KEY ("seatClassId") REFERENCES "SeatClass"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

apps/edr-passenger-api/prisma/migrations/20260516000001_seat_class_updated_at_default/migration.sql

@@ -0,0 +1 @@
+ALTER TABLE "SeatClass" ALTER COLUMN "updatedAt" SET DEFAULT NOW();

apps/edr-passenger-api/prisma/schema.prisma

@@ -35,10 +35,16 @@ enum SeatStatus {
   BLOCKED
 }
 
-enum ServiceClass {
-  ECONOMY
-  BUSINESS
-  FIRST
+model SeatClass {
+  id          String   @id @default(uuid())
+  name        String   @unique
+  description String?
+  basePrice   Int
+  isActive    Boolean  @default(true)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+  coaches     Coach[]
+  fareRules   FareRule[]
 }
 
 enum BookingStatus {
@@ -249,12 +255,13 @@ model TripLiveStatus {
 }
 
 model Coach {
-  id           String       @id @default(uuid())
+  id           String    @id @default(uuid())
   tripId       String
   label        String
-  serviceClass ServiceClass
-  trip  Trip   @relation(fields: [tripId], references: [id])
-  seats Seat[]
+  seatClassId  String
+  trip      Trip      @relation(fields: [tripId], references: [id])
+  seatClass SeatClass @relation(fields: [seatClassId], references: [id])
+  seats     Seat[]
   @@unique([tripId, label])
 }
 
@@ -283,11 +290,12 @@ model SeatHold {
 }
 
 model FareRule {
-  id            String       @id @default(uuid())
+  id            String    @id @default(uuid())
   tripId        String?
   route         String?
-  serviceClass  ServiceClass
+  seatClassId   String
   baseFareMinor Int
+  seatClass SeatClass @relation(fields: [seatClassId], references: [id])
   currency      String       @default("ETB")
   refundable    Boolean      @default(true)
   validFrom     DateTime