festa/prisma/schema.prisma

// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

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

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

/// An event is the representation of a gathering of people in a certain place at a certain time.
model Event {
  id           Int           @id @default(autoincrement())
  //
  slug         String
  createdAt    DateTime      @default(now())
  updatedAt    DateTime      @updatedAt
  viewPassword String?
  joinPassword String?
  //
  name         String
  description  String
  postcard     String?
  startTime    DateTime?
  endTime      DateTime?
  location     String?
  //
  partecipants Partecipant[]
  neededItems  Item[]
  vehicles     Vehicle[]
}

/// A partecipant is a person who may or may not partecipate to the event.
model Partecipant {
  id          Int                 @id @default(autoincrement())
  eventId     Int
  event       Event               @relation(fields: [eventId], references: [id])
  //
  name        String
  email       String
  //
  means       PartecipationMeans
  createdAt   DateTime            @default(now())
  joinedAt    DateTime?
  //
  answer      PartecipationAnswer
  shouldBring Item[]
  drives      Vehicle[]           @relation("VehicleDrive")
  rides       Vehicle[]           @relation("VehicleRide")
  expenses    Transaction[]       @relation("TransactionFrom")
  income      Transaction[]       @relation("TransactionTo")
}

enum PartecipationMeans {
  CREATOR
  INVITED
  ACCEPTED
  JOINED
}

enum PartecipationAnswer {
  HOST
  YES
  MAYBE
  NO
  PENDING
}

/// An item which should be bought and brought by somebody to the event.
model Item {
  id         Int          @id @default(autoincrement())
  eventId    Int
  event      Event        @relation(fields: [eventId], references: [id])
  //
  quantity   Int
  name       String
  purchased  Boolean      @default(false)
  //
  assignedId Int?
  assigned   Partecipant? @relation(fields: [assignedId], references: [id])
}

/// A vehicle which is being used to transport people from and to the event.
model Vehicle {
  id          Int           @id @default(autoincrement())
  eventId     Int
  event       Event         @relation(fields: [eventId], references: [id])
  //
  driverId    Int
  driver      Partecipant   @relation("VehicleDrive", fields: [driverId], references: [id])
  riders      Partecipant[] @relation("VehicleRide")
  //
  type        VehicleType   @default(CAR)
  slots       Int           @default(4)
  password    String?
  //
  voyage      VoyageType
  location    String
  departureAt DateTime
  arrivalAt   DateTime
}

enum VehicleType {
  CAR
  OTHER
}

enum VoyageType {
  TO
  FROM
}

/// A monetary transaction related to the event.
model Transaction {
  id       Int          @id @default(autoincrement())
  //
  fromId   Int?
  from     Partecipant? @relation("TransactionFrom", fields: [fromId], references: [id])
  toId     Int?
  to       Partecipant? @relation("TransactionTo", fields: [toId], references: [id])
  //
  amount   Decimal
  currency String
  reason   String
}