Coaches, seats, schedules, and pricing related updates

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

@@ -70,17 +70,34 @@ enum Currency {
   @@schema("passenger")
 }
 
-model SeatClass {
+model CoachType {
   id          String   @id @default(uuid())
-  name        String   @unique
-  description String?
-  basePrice   Int
-  isActive    Boolean  @default(true)
+  code        String
+  name        String
+  type        String   @default("passenger") // 'passenger', 'sleeper', 'dining', 'baggage'
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
   coaches     Coach[]
+  seatClasses SeatClass[]
+
+  @@schema("passenger")
+}
+
+model SeatClass {
+  id          String   @id @default(uuid())
+  coachTypeId String
+  name        String
+  description String?
+  baseFareMinor Int
+  isActive    Boolean  @default(true)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+  coachType   CoachType @relation(fields: [coachTypeId], references: [id])
   fareRules   FareRule[]
   routeFareRules RouteFareRule[]
+  segmentFares SegmentFareRule[]
+  @@unique([coachTypeId, name])
+  @@index([coachTypeId])
 
   @@schema("passenger")
 }
@@ -385,21 +402,17 @@ model TripLiveStatus {
 
 model Coach {
   id              String            @id @default(uuid())
-  coachNumber     String            @unique
-  label           String
-  seatClassId     String
-  coachType       String?
-  mode            String            @default("seat")  // 'seat', 'bed', 'convertible'
-  seatArrangement String?
-  bedArrangement  String?
-  amenities       Json?
-  totalUnits      Int               @default(0)
-  isActive        Boolean           @default(true)
+  coachTypeId     String
+  number          String            @unique
+  arrangement     String            @default("2+2") // e.g., '2+2', '3+2', '2+2+2'
+  capacity        Int               @default(0) // Total seats/beds
+  status          String            @default("ACTIVE") // 'ACTIVE', 'MAINTENANCE', 'INACTIVE'
   createdAt       DateTime          @default(now())
   updatedAt       DateTime          @updatedAt
-  seatClass   SeatClass         @relation(fields: [seatClassId], references: [id])
+  coachType   CoachType         @relation(fields: [coachTypeId], references: [id])
   seats       Seat[]
   assignments CoachAssignment[]
+  @@index([coachTypeId])
 
   @@schema("passenger")
 }
@@ -422,10 +435,9 @@ model CoachAssignment {
 model Seat {
   id              String     @id @default(uuid())
   coachId         String
+  seatNumber      String     // Auto-generated: e.g., '1', '2', '3' (unique per coach)
   row             Int
   col             String
-  label           String
-  seatNumber      String?
   kind            SeatKind   @default(STANDARD)
   status          SeatStatus @default(AVAILABLE)
   heldUntil       DateTime?
@@ -433,13 +445,13 @@ model Seat {
   isAisle         Boolean    @default(false)
   bedPosition     String?    // 'lower', 'middle', 'upper'
   premiumFeeMinor Int        @default(0)
-  eligibility     String?
   coach        Coach         @relation(fields: [coachId], references: [id])
   bookingSeats BookingSeat[]
   blocks       SeatBlock[]
   ticketSeats  TicketSeat[]
-  @@unique([coachId, row, col])
   @@unique([coachId, seatNumber])
+  @@unique([coachId, row, col])
+  @@index([coachId])
 
   @@schema("passenger")
 }
@@ -978,6 +990,7 @@ model Route {
   createdAt   DateTime @default(now())
   stops       RouteStop[]
   fareRules   RouteFareRule[]
+  segmentFares SegmentFareRule[]
   schedules   TrainSchedule[]
 
   @@schema("passenger")
@@ -1017,6 +1030,26 @@ model RouteFareRule {
   @@schema("passenger")
 }
 
+model SegmentFareRule {
+  id              String    @id @default(uuid())
+  routeId         String
+  originStopSequence Int
+  destinationStopSequence Int
+  seatClassId     String
+  baseFareMinor   Int
+  nationality     String?   // Optional: Ethiopian, Djiboutian, Other
+  currency        String    @default("ETB")
+  validFrom       DateTime
+  validUntil      DateTime?
+  createdAt       DateTime  @default(now())
+  route           Route     @relation(fields: [routeId], references: [id], onDelete: Cascade)
+  seatClass       SeatClass @relation(fields: [seatClassId], references: [id])
+  @@unique([routeId, originStopSequence, destinationStopSequence, seatClassId, nationality])
+  @@index([routeId, seatClassId])
+
+  @@schema("passenger")
+}
+
 model Agent {
   id              String   @id @default(uuid())
   userId          String   @unique