enum BOOKING_TYPE {
    STATION
    LST_01
    LST_02
    LST_03
    LST_04
}

model Booking {
    id        String       @id @default(uuid())
    userId    String       @map(name: "user_id")
    type      BOOKING_TYPE
    stationId Int?         @map(name: "station_id")
    startTime DateTime     @map(name: "start_time")
    endTime   DateTime     @map(name: "end_time")
    createdAt DateTime     @default(now()) @map(name: "created_at")
    updatedAt DateTime     @updatedAt @map(name: "updated_at")

    // Relations
    User    User     @relation(fields: [userId], references: [id], onDelete: Cascade)
    Station Station? @relation(fields: [stationId], references: [id], onDelete: Cascade)

    @@index([startTime, endTime])
    @@index([type, startTime, endTime])
    @@map(name: "bookings")
}