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

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

model User {
  id                   String             @id @default(cuid())
  email                String             @unique
  name                 String?
  passwordHash         String
  createdAt            DateTime           @default(now())
  updatedAt            DateTime           @updatedAt
  ownedLists           List[]             @relation("ListOwner")
  collaborations       Collaborator[]
  sentInvitations      Invitation[]       @relation("InvitationInviter")
  receivedInvitations  Invitation[]       @relation("InvitationReceiver")
  pushSubscriptions    PushSubscription[]

  @@index([email])
}

model PushSubscription {
  id         String   @id @default(cuid())
  userId     String
  endpoint   String   @db.VarChar(512)
  p256dh     String   @db.Text
  auth       String   @db.Text
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt
  user       User     @relation(fields: [userId], references: [id], onDelete: Cascade)

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

model List {
  id            String         @id @default(cuid())
  title         String
  color         String         @default("#3B82F6")
  ownerId       String
  createdAt     DateTime       @default(now())
  updatedAt     DateTime       @updatedAt
  owner         User           @relation("ListOwner", fields: [ownerId], references: [id], onDelete: Cascade)
  items         Item[]
  collaborators Collaborator[]
  invitations   Invitation[]

  @@index([ownerId])
  @@index([ownerId, createdAt])
}

model Collaborator {
  id         String   @id @default(cuid())
  userId     String
  listId     String
  permission String   // 'editor' or 'viewer'
  createdAt  DateTime @default(now())
  user       User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  list       List     @relation(fields: [listId], references: [id], onDelete: Cascade)

  @@unique([userId, listId])
  @@index([userId])
  @@index([listId])
  @@index([listId, permission])
}

model Invitation {
  id         String   @id @default(cuid())
  email      String
  listId     String
  inviterId  String
  permission String   // 'editor' or 'viewer'
  status     String   @default("pending") // 'pending', 'accepted', 'declined'
  createdAt  DateTime @default(now())
  expiresAt  DateTime
  list       List     @relation(fields: [listId], references: [id], onDelete: Cascade)
  inviter    User     @relation("InvitationInviter", fields: [inviterId], references: [id], onDelete: Cascade)
  receiver   User?    @relation("InvitationReceiver", fields: [email], references: [email], onDelete: Cascade)

  @@index([email])
  @@index([listId])
  @@index([inviterId])
  @@index([status])
  @@index([email, status])
  @@index([listId, status])
}

model Item {
  id          String    @id @default(cuid())
  title       String
  description String?
  completed   Boolean   @default(false)
  priority    String    @default("medium") // low, medium, high
  dueDate     DateTime?
  tags        Json      @default("[]")
  notes       String?   @db.Text
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt
  listId      String
  list        List      @relation(fields: [listId], references: [id], onDelete: Cascade)

  @@index([listId])
  @@index([completed])
  @@index([priority])
  @@index([dueDate])
  @@index([createdAt])
  @@index([listId, completed])
  @@index([listId, priority])
}