// Prisma schema for dwellops-platform
// Better Auth requires User, Session, Account, and Verification models
// with specific field names — do not rename them.

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

datasource db {
  provider = "postgresql"
}

// ─── Better Auth required models ───────────────────────────────────────────

model User {
  id            String   @id @default(cuid())
  email         String   @unique
  name          String?
  emailVerified Boolean  @default(false)
  image         String?
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  sessions    Session[]
  accounts    Account[]
  memberships Membership[]

  @@map("users")
}

model Session {
  id        String   @id
  userId    String
  token     String   @unique
  expiresAt DateTime
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  ipAddress String?
  userAgent String?

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

  @@map("sessions")
}

model Account {
  id                    String    @id
  userId                String
  accountId             String
  providerId            String
  accessToken           String?
  refreshToken          String?
  idToken               String?
  accessTokenExpiresAt  DateTime?
  refreshTokenExpiresAt DateTime?
  scope                 String?
  password              String?
  createdAt             DateTime  @default(now())
  updatedAt             DateTime  @updatedAt

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

  @@map("accounts")
}

model Verification {
  id         String   @id
  identifier String
  value      String
  expiresAt  DateTime
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  @@map("verifications")
}

// ─── HOA domain models ─────────────────────────────────────────────────────

/// A homeowners association managed by the platform.
/// In self-hosted mode there is typically one HOA per deployment,
/// but the schema supports multiple to enable future SaaS evolution.
model Hoa {
  id          String   @id @default(cuid())
  name        String
  slug        String   @unique
  description String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  units       Unit[]
  memberships Membership[]

  @@map("hoas")
}

/// A dwelling unit within an HOA (apartment, townhouse, lot, etc.).
model Unit {
  id         String   @id @default(cuid())
  hoaId      String
  identifier String
  address    String?
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  hoa         Hoa          @relation(fields: [hoaId], references: [id], onDelete: Cascade)
  memberships Membership[]

  @@unique([hoaId, identifier])
  @@map("units")
}

/// Supported roles within an HOA.
enum Role {
  ADMIN
  BOARD_MEMBER
  TREASURER
  OWNER
  TENANT
  VIEWER
}

/// Connects a User to an HOA with a role, optionally scoped to a Unit.
model Membership {
  id        String   @id @default(cuid())
  userId    String
  hoaId     String
  unitId    String?
  role      Role     @default(OWNER)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  user User  @relation(fields: [userId], references: [id], onDelete: Cascade)
  hoa  Hoa   @relation(fields: [hoaId], references: [id], onDelete: Cascade)
  unit Unit? @relation(fields: [unitId], references: [id], onDelete: SetNull)

  @@unique([userId, hoaId, unitId])
  @@map("memberships")
}

/// Immutable audit log for important platform actions.
model AuditLog {
  id         String   @id @default(cuid())
  /// Nullable to support system-initiated actions.
  userId     String?
  action     String
  entityType String
  entityId   String?
  payload    Json?
  ipAddress  String?
  userAgent  String?
  createdAt  DateTime @default(now())

  @@map("audit_logs")
}