todolist/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")
  directUrl = env("DIRECT_URL")
}

// ==================== AUTH MODELS ====================

model User {
  id            String    @id @default(cuid())
  name          String?
  email         String    @unique
  emailVerified DateTime?
  image         String?
  password      String?   // null if using OAuth
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt

  accounts        Account[]
  sessions        Session[]
  tasks           Task[]
  ownedProjects   Project[]       @relation("OwnedProjects")
  projectMembers  ProjectMember[]

  @@map("users")
}

model Account {
  id                String  @id @default(cuid())
  userId            String
  type              String
  provider          String
  providerAccountId String
  refresh_token     String?
  access_token      String?
  expires_at        Int?
  token_type        String?
  scope             String?
  id_token          String?
  session_state     String?

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([provider, providerAccountId])
  @@map("accounts")
}

model Session {
  id           String   @id @default(cuid())
  sessionToken String   @unique
  userId       String
  expires      DateTime
  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@map("sessions")
}

model VerificationToken {
  identifier String
  token      String   @unique
  expires    DateTime

  @@unique([identifier, token])
  @@map("verification_tokens")
}

// ==================== TASK MODEL ====================

model Task {
  id          String   @id @default(cuid())
  userId      String
  projectId   String?  // Optional - cho backward compatibility
  title       String
  description String?
  status      String   @default("TODO") // TODO, IN_PROGRESS, DONE
  deadline    DateTime?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  user    User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  project Project? @relation(fields: [projectId], references: [id], onDelete: Cascade)

  @@index([userId])
  @@index([projectId])
  @@index([status])
  @@index([deadline])
  @@map("tasks")
}

// ==================== PROJECT MODELS ====================

model Project {
  id          String   @id @default(cuid())
  name        String
  description String?
  ownerId     String
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  owner   User            @relation("OwnedProjects", fields: [ownerId], references: [id], onDelete: Cascade)
  members ProjectMember[]
  invites ProjectInvite[]
  tasks   Task[]

  @@index([ownerId])
  @@map("projects")
}

model ProjectMember {
  id        String   @id @default(cuid())
  projectId String
  userId    String
  role      String   @default("MEMBER") // OWNER, ADMIN, MEMBER
  joinedAt  DateTime @default(now())

  project Project @relation(fields: [projectId], references: [id], onDelete: Cascade)
  user    User    @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([projectId, userId])
  @@index([userId])
  @@map("project_members")
}

model ProjectInvite {
  id        String   @id @default(cuid())
  projectId String
  token     String   @unique @default(cuid())
  email     String?
  expiresAt DateTime
  used      Boolean  @default(false)
  createdAt DateTime @default(now())

  project Project @relation(fields: [projectId], references: [id], onDelete: Cascade)

  @@index([token])
  @@index([projectId])
  @@map("project_invites")
}