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

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

model User {
  id              String     @id @default(cuid())
  phone           String     @unique
  passwordHash    String
  nickname        String
  email           String?
  familyIds       String[]
  activeFamilyId  String?
  joinDate        DateTime   @default(now())
  createdAt       DateTime   @default(now())
  bills           Bill[]
  familiesCreated Family[]   @relation("FamilyCreator")
}

model Family {
  id         String         @id @default(cuid())
  name       String
  inviteCode String         @unique
  createdBy  String
  creator    User           @relation("FamilyCreator", fields: [createdBy], references: [id])
  createdAt  DateTime       @default(now())
  members    FamilyMember[]
  bills      Bill[]
}

model FamilyMember {
  id        String   @id @default(cuid())
  familyId  String
  family    Family   @relation(fields: [familyId], references: [id], onDelete: Cascade)
  userId    String
  nickname  String
  role      String
  joinedAt  DateTime @default(now())
  @@unique([familyId, userId])
}

model Bill {
  id        String   @id @default(cuid())
  userId    String
  user      User     @relation(fields: [userId], references: [id])
  familyId  String?
  family    Family?  @relation(fields: [familyId], references: [id])
  type      String
  amount    Float
  category  String
  note      String?
  emoji     String?
  time      String
  date      DateTime
  createdAt DateTime @default(now())
}