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prisma/schema.prisma

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+// 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])
+}