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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 = "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")
+}