// 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 = "sqlite"
  url      = env("DATABASE_URL")
}

// User model for authentication and access control
model User {
  id          Int      @id @default(autoincrement())
  name        String
  username    String   @unique
  email       String   @unique
  password    String // hashed password
  status      String   @default("active") // "active" or "inactive"
  authLevel   Int // 1=superadmin, 2=admin, 3=user
  createdDate DateTime @default(now())
  editDate    DateTime @updatedAt

  @@map("users")
}

// Customer model for vehicle owners
model Customer {
  id          Int      @id @default(autoincrement())
  name        String
  phone       String?
  email       String?
  address     String?
  createdDate DateTime @default(now())
  updateDate  DateTime @updatedAt

  // Relationships
  vehicles          Vehicle[]
  maintenanceVisits MaintenanceVisit[]

  @@map("customers")
}

// Vehicle model with comprehensive specifications
model Vehicle {
  id                     Int       @id @default(autoincrement())
  plateNumber            String    @unique
  bodyType               String
  manufacturer           String
  model                  String
  trim                   String?
  year                   Int
  transmission           String // "Automatic" or "Manual"
  fuel                   String // "Gasoline", "Diesel", "Hybrid", "Mild Hybrid", "Electric"
  cylinders              Int?
  engineDisplacement     Float?
  useType                String // "personal", "taxi", "apps", "loading", "travel"
  ownerId                Int
  lastVisitDate          DateTime?
  suggestedNextVisitDate DateTime?
  createdDate            DateTime  @default(now())
  updateDate             DateTime  @updatedAt

  // Relationships
  owner             Customer           @relation(fields: [ownerId], references: [id], onDelete: Cascade)
  maintenanceVisits MaintenanceVisit[]

  @@map("vehicles")
}

// Maintenance type model for categorizing maintenance services
model MaintenanceType {
  id          Int      @id @default(autoincrement())
  name        String   @unique
  description String?
  isActive    Boolean  @default(true)
  createdDate DateTime @default(now())
  updateDate  DateTime @updatedAt

  @@map("maintenance_types")
}

// Car dataset model for storing vehicle manufacturers, models, and body types
model CarDataset {
  id           Int      @id @default(autoincrement())
  manufacturer String
  model        String
  bodyType     String
  isActive     Boolean  @default(true)
  createdDate  DateTime @default(now())
  updateDate   DateTime @updatedAt

  // Unique constraint to prevent duplicate manufacturer-model combinations
  @@unique([manufacturer, model])
  @@map("car_dataset")
}

// Maintenance visit model for tracking service records
model MaintenanceVisit {
  id              Int      @id @default(autoincrement())
  vehicleId       Int
  customerId      Int
  maintenanceJobs String // JSON field storing array of maintenance jobs: [{"typeId": 1, "job": "تغيير زيت المحرك", "notes": "..."}, ...]
  description     String
  cost            Float
  paymentStatus   String   @default("pending")
  kilometers      Int
  visitDate       DateTime @default(now())
  nextVisitDelay  Int // months (1, 2, 3, or 4)
  createdDate     DateTime @default(now())
  updateDate      DateTime @updatedAt

  // Relationships
  vehicle  Vehicle  @relation(fields: [vehicleId], references: [id], onDelete: Cascade)
  customer Customer @relation(fields: [customerId], references: [id], onDelete: Cascade)
  income   Income[]

  @@map("maintenance_visits")
}

// Expense model for business expense tracking
model Expense {
  id          Int      @id @default(autoincrement())
  description String
  category    String
  amount      Float
  expenseDate DateTime @default(now())
  createdDate DateTime @default(now())
  updateDate  DateTime @updatedAt

  @@map("expenses")
}

// Income model for revenue tracking from maintenance visits
model Income {
  id                 Int      @id @default(autoincrement())
  maintenanceVisitId Int
  amount             Float
  incomeDate         DateTime @default(now())
  createdDate        DateTime @default(now())
  updateDate         DateTime @updatedAt

  // Relationships
  maintenanceVisit MaintenanceVisit @relation(fields: [maintenanceVisitId], references: [id], onDelete: Cascade)

  @@map("income")
}

// Settings model for application configuration
model Settings {
  id          Int      @id @default(autoincrement())
  key         String   @unique
  value       String
  description String?
  createdDate DateTime @default(now())
  updateDate  DateTime @updatedAt

  @@map("settings")
}