generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

// ─── Users ──────────────────────────────────────────────────────────

model User {
  id        String   @id @default(cuid())
  did       String   @unique // EncryptID DID
  username  String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  trips        TripCollaborator[]
  expenses     Expense[]
  packingItems PackingItem[]
}

// ─── Trips ──────────────────────────────────────────────────────────

model Trip {
  id             String     @id @default(cuid())
  title          String
  slug           String     @unique
  description    String?    @db.Text
  rawInput       String?    @db.Text // Original NL input preserved
  startDate      DateTime?
  endDate        DateTime?
  budgetTotal    Float?
  budgetCurrency String     @default("USD")
  status         TripStatus @default(PLANNING)
  canvasSlug     String? // rspace community slug
  createdAt      DateTime   @default(now())
  updatedAt      DateTime   @updatedAt

  collaborators  TripCollaborator[]
  destinations   Destination[]
  itineraryItems ItineraryItem[]
  bookings       Booking[]
  expenses       Expense[]
  packingItems   PackingItem[]
}

enum TripStatus {
  PLANNING
  BOOKED
  IN_PROGRESS
  COMPLETED
  CANCELLED
}

model TripCollaborator {
  id       String           @id @default(cuid())
  userId   String
  user     User             @relation(fields: [userId], references: [id], onDelete: Cascade)
  tripId   String
  trip     Trip             @relation(fields: [tripId], references: [id], onDelete: Cascade)
  role     CollaboratorRole @default(MEMBER)
  joinedAt DateTime         @default(now())

  @@unique([userId, tripId])
  @@index([tripId])
}

enum CollaboratorRole {
  OWNER
  EDITOR
  VIEWER
  MEMBER
}

// ─── Destinations ───────────────────────────────────────────────────

model Destination {
  id            String    @id @default(cuid())
  tripId        String
  trip          Trip      @relation(fields: [tripId], references: [id], onDelete: Cascade)
  name          String
  country       String?
  lat           Float?
  lng           Float?
  arrivalDate   DateTime?
  departureDate DateTime?
  notes         String?   @db.Text
  sortOrder     Int       @default(0)
  canvasShapeId String? // ID of folk-destination on canvas
  createdAt     DateTime  @default(now())

  itineraryItems ItineraryItem[]
  bookings       Booking[]

  @@index([tripId])
}

// ─── Itinerary ──────────────────────────────────────────────────────

model ItineraryItem {
  id            String            @id @default(cuid())
  tripId        String
  trip          Trip              @relation(fields: [tripId], references: [id], onDelete: Cascade)
  destinationId String?
  destination   Destination?      @relation(fields: [destinationId], references: [id], onDelete: SetNull)
  title         String
  description   String?           @db.Text
  date          DateTime?
  startTime     String? // "09:00" format
  endTime       String? // "17:00" format
  category      ItineraryCategory @default(ACTIVITY)
  sortOrder     Int               @default(0)
  canvasShapeId String?
  createdAt     DateTime          @default(now())

  @@index([tripId])
  @@index([destinationId])
}

enum ItineraryCategory {
  FLIGHT
  TRANSPORT
  ACCOMMODATION
  ACTIVITY
  MEAL
  FREE_TIME
  OTHER
}

// ─── Bookings ───────────────────────────────────────────────────────

model Booking {
  id                 String        @id @default(cuid())
  tripId             String
  trip               Trip          @relation(fields: [tripId], references: [id], onDelete: Cascade)
  destinationId      String?
  destination        Destination?  @relation(fields: [destinationId], references: [id], onDelete: SetNull)
  type               BookingType
  provider           String? // "Air Canada", "Booking.com"
  confirmationNumber String?
  details            String?       @db.Text // JSON for flexible data
  cost               Float?
  currency           String        @default("USD")
  startDate          DateTime?
  endDate            DateTime?
  status             BookingStatus @default(PLANNED)
  canvasShapeId      String?
  createdAt          DateTime      @default(now())

  @@index([tripId])
}

enum BookingType {
  FLIGHT
  HOTEL
  CAR_RENTAL
  TRAIN
  BUS
  FERRY
  ACTIVITY
  RESTAURANT
  OTHER
}

enum BookingStatus {
  PLANNED
  BOOKED
  CONFIRMED
  CANCELLED
}

// ─── Expenses ───────────────────────────────────────────────────────

model Expense {
  id          String          @id @default(cuid())
  tripId      String
  trip        Trip            @relation(fields: [tripId], references: [id], onDelete: Cascade)
  paidById    String?
  paidBy      User?           @relation(fields: [paidById], references: [id], onDelete: SetNull)
  description String
  amount      Float
  currency    String          @default("USD")
  category    ExpenseCategory @default(OTHER)
  date        DateTime?
  splitType   SplitType       @default(EQUAL)
  createdAt   DateTime        @default(now())

  @@index([tripId])
}

enum ExpenseCategory {
  FLIGHT
  ACCOMMODATION
  FOOD
  TRANSPORT
  ACTIVITY
  SHOPPING
  OTHER
}

enum SplitType {
  EQUAL
  CUSTOM
  INDIVIDUAL
}

// ─── Packing ────────────────────────────────────────────────────────

model PackingItem {
  id        String   @id @default(cuid())
  tripId    String
  trip      Trip     @relation(fields: [tripId], references: [id], onDelete: Cascade)
  addedById String?
  addedBy   User?    @relation(fields: [addedById], references: [id], onDelete: SetNull)
  name      String
  category  String? // "Clothing", "Electronics", "Documents"
  packed    Boolean  @default(false)
  quantity  Int      @default(1)
  sortOrder Int      @default(0)
  createdAt DateTime @default(now())

  @@index([tripId])
}