// 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")
}

// ============================================
// Core Models
// ============================================

model User {
  id            String    @id @default(uuid())
  email         String    @unique
  password      String
  firstName     String?
  lastName      String?
  isActive      Boolean   @default(true)
  
  // Relations
  roles         UserRole[]
  refreshTokens RefreshToken[]
  
  // Multi-tenancy (optional)
  tenantId      String?
  tenant        Tenant?   @relation(fields: [tenantId], references: [id])
  
  // Timestamps & Soft Delete
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
  deletedAt     DateTime?

  @@index([email])
  @@index([tenantId])
}

model Role {
  id          String       @id @default(uuid())
  name        String       @unique
  description String?
  isSystem    Boolean      @default(false)
  
  // Relations
  users       UserRole[]
  permissions RolePermission[]
  
  // Timestamps & Soft Delete
  createdAt   DateTime     @default(now())
  updatedAt   DateTime     @updatedAt
  deletedAt   DateTime?

  @@index([name])
}

model Permission {
  id          String           @id @default(uuid())
  name        String           @unique
  description String?
  resource    String           // e.g., "users", "posts"
  action      String           // e.g., "create", "read", "update", "delete"
  
  // Relations
  roles       RolePermission[]
  
  // Timestamps
  createdAt   DateTime         @default(now())
  updatedAt   DateTime         @updatedAt

  @@unique([resource, action])
  @@index([resource])
}

// Many-to-many: User <-> Role
model UserRole {
  id        String   @id @default(uuid())
  userId    String
  roleId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  role      Role     @relation(fields: [roleId], references: [id], onDelete: Cascade)
  createdAt DateTime @default(now())

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

// Many-to-many: Role <-> Permission
model RolePermission {
  id           String     @id @default(uuid())
  roleId       String
  permissionId String
  role         Role       @relation(fields: [roleId], references: [id], onDelete: Cascade)
  permission   Permission @relation(fields: [permissionId], references: [id], onDelete: Cascade)
  createdAt    DateTime   @default(now())

  @@unique([roleId, permissionId])
  @@index([roleId])
  @@index([permissionId])
}

// ============================================
// Authentication
// ============================================

model RefreshToken {
  id        String   @id @default(uuid())
  token     String   @unique
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  expiresAt DateTime
  createdAt DateTime @default(now())

  @@index([token])
  @@index([userId])
}

// ============================================
// Multi-tenancy (Optional)
// ============================================

model Tenant {
  id        String    @id @default(uuid())
  name      String
  slug      String    @unique
  isActive  Boolean   @default(true)
  
  // Relations
  users     User[]
  
  // Timestamps & Soft Delete
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt
  deletedAt DateTime?

  @@index([slug])
}

// ============================================
// i18n / Translations (Optional - DB driven)
// ============================================

model Translation {
  id        String   @id @default(uuid())
  key       String
  locale    String   // e.g., "en", "tr", "de"
  value     String
  namespace String   @default("common") // e.g., "common", "errors", "validation"
  
  // Timestamps
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  @@unique([key, locale, namespace])
  @@index([key])
  @@index([locale])
  @@index([namespace])
}