// Prisma schema for the organizer app.
// Learn more: https://pris.ly/d/prisma-schema

generator client {
  provider = "prisma-client"
  output   = "../lib/generated/prisma"
}

datasource db {
  provider = "postgresql"
}

enum Role {
  ADMIN
  USER
  PENDING
}

model User {
  id           String   @id @default(cuid())
  email        String   @unique
  passwordHash String
  name         String?
  // The very first person to sign up becomes ADMIN; everyone after that
  // defaults to USER. PENDING exists as a role an admin can move someone
  // into/out of later -- nothing assigns it automatically yet.
  role         Role     @default(USER)
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  categories Category[]
}

model Category {
  id     String @id @default(cuid())
  name   String
  order  Int
  userId String

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

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

  @@index([userId, order])
}

model Group {
  id   String @id @default(cuid())
  // Short display title, enforced at <=20 chars in app-level validation too.
  title String @db.VarChar(20)
  // Palette key (see lib/colors.ts) rather than a raw hex value, so the
  // curated palette can be retinted centrally without a data migration.
  color String
  // Position within its Category lane.
  order Int
  // Single evolving markdown document for the group. Not a separate model:
  // it's a 1:1, always-exists field with no independent lifecycle.
  noteContent String @default("") @db.Text
  // Set once a group is archived; archived groups are kept (not deleted)
  // but excluded from the Home board query. Null = active.
  archivedAt  DateTime?

  categoryId String

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  category Category @relation(fields: [categoryId], references: [id], onDelete: Cascade)
  todos    Todo[]

  @@index([categoryId, order])
}

model Todo {
  id        String  @id @default(cuid())
  title     String  @db.VarChar(20)
  details   String? @db.Text
  completed Boolean @default(false)
  // Position within its Group's to-do list.
  order     Int

  groupId String

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  group Group @relation(fields: [groupId], references: [id], onDelete: Cascade)

  @@index([groupId, order])
}