Inventory_backend/prisma/schema.prisma

// 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")
}

// Entités principales
model Site {
  id          String   @id @default(cuid())
  name        String
  contactName       String   @default("")
  contactPhone      String   @default("")
  contactAddress    String   @default("")
  contactPostalCode String   @default("")
  contactCity       String   @default("")
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  machines Machine[]
  documents Document[] @relation("SiteDocuments")

  @@map("sites")
}

model TypeMachine {
  id          String   @id @default(cuid())
  name        String   @unique
  description String?
  category    String?
  maintenanceFrequency String?
  components  Json?    // Stockage de la structure hiérarchique des composants
  criticalParts Json?  // Stockage des pièces critiques
  machinePieces Json?  // Stockage des pièces de machine
  specifications Json? // Stockage des spécifications techniques
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  machines Machine[]
  customFields CustomField[] @relation("TypeMachineCustomFields")

  @@map("type_machines")
}

model TypeComposant {
  id          String   @id @default(cuid())
  name        String   @unique
  description String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  composants Composant[]
  customFields CustomField[] @relation("TypeComposantCustomFields")

  @@map("type_composants")
}

model TypePiece {
  id          String   @id @default(cuid())
  name        String   @unique
  description String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  pieces Piece[]
  customFields CustomField[] @relation("TypePieceCustomFields")

  @@map("type_pieces")
}

model Machine {
  id          String   @id @default(cuid())
  name        String
  reference   String?
  constructeur String?
  prix        Decimal? @db.Decimal(10, 2)
  emplacement String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  siteId      String
  site        Site         @relation(fields: [siteId], references: [id], onDelete: Cascade)
  
  typeMachineId String?
  typeMachine   TypeMachine? @relation(fields: [typeMachineId], references: [id])
  
  composants  Composant[]
  pieces      Piece[]
  documents   Document[]   @relation("MachineDocuments")
  customFieldValues CustomFieldValue[] @relation("MachineCustomFieldValues")

  @@map("machines")
}

model Composant {
  id          String   @id @default(cuid())
  name        String
  reference   String?
  constructeur String?
  prix        Decimal? @db.Decimal(10, 2)
  emplacement String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations hiérarchiques
  machineId   String?
  machine     Machine?    @relation(fields: [machineId], references: [id], onDelete: Cascade)
  
  parentComposantId String?
  parentComposant   Composant? @relation("ComposantHierarchy", fields: [parentComposantId], references: [id], onDelete: Cascade)
  sousComposants    Composant[] @relation("ComposantHierarchy")
  
  typeComposantId String?
  typeComposant   TypeComposant? @relation(fields: [typeComposantId], references: [id])
  
  pieces      Piece[]
  documents   Document[] @relation("ComposantDocuments")
  customFieldValues CustomFieldValue[] @relation("ComposantCustomFieldValues")

  @@map("composants")
}

model Piece {
  id          String   @id @default(cuid())
  name        String
  reference   String?
  constructeur String?
  prix        Decimal? @db.Decimal(10, 2)
  emplacement String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  machineId   String?
  machine     Machine?    @relation(fields: [machineId], references: [id], onDelete: Cascade)
  
  composantId String?
  composant   Composant?  @relation(fields: [composantId], references: [id], onDelete: Cascade)
  
  typePieceId String?
  typePiece   TypePiece?  @relation(fields: [typePieceId], references: [id])
  
  documents   Document[]  @relation("PieceDocuments")
  customFieldValues CustomFieldValue[] @relation("PieceCustomFieldValues")

  @@map("pieces")
}

model Document {
  id          String   @id @default(cuid())
  name        String
  filename    String
  path        String
  mimeType    String
  size        Int
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations polymorphiques
  machineId   String?
  machine     Machine?    @relation("MachineDocuments", fields: [machineId], references: [id], onDelete: Cascade)
  
  composantId String?
  composant   Composant?  @relation("ComposantDocuments", fields: [composantId], references: [id], onDelete: Cascade)
  
  pieceId     String?
  piece       Piece?      @relation("PieceDocuments", fields: [pieceId], references: [id], onDelete: Cascade)

  siteId      String?
  site        Site?       @relation("SiteDocuments", fields: [siteId], references: [id], onDelete: Cascade)

  @@map("documents")
}

model CustomField {
  id          String   @id @default(cuid())
  name        String
  type        String   // 'string', 'number', 'boolean', 'date'
  required    Boolean  @default(false)
  defaultValue String?
  options     String[] // Pour les champs de type SELECT
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations polymorphiques pour les types
  typeMachineId   String?
  typeMachine     TypeMachine?   @relation("TypeMachineCustomFields", fields: [typeMachineId], references: [id], onDelete: Cascade)
  
  typeComposantId String?
  typeComposant   TypeComposant? @relation("TypeComposantCustomFields", fields: [typeComposantId], references: [id], onDelete: Cascade)
  
  typePieceId     String?
  typePiece       TypePiece?     @relation("TypePieceCustomFields", fields: [typePieceId], references: [id], onDelete: Cascade)

  // Relations avec les valeurs
  customFieldValues CustomFieldValue[]

  @@map("custom_fields")
}

model CustomFieldValue {
  id          String   @id @default(cuid())
  value       String
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  customFieldId String
  customField   CustomField @relation(fields: [customFieldId], references: [id], onDelete: Cascade)
  
  machineId   String?
  machine     Machine?    @relation("MachineCustomFieldValues", fields: [machineId], references: [id], onDelete: Cascade)
  
  composantId String?
  composant   Composant?  @relation("ComposantCustomFieldValues", fields: [composantId], references: [id], onDelete: Cascade)
  
  pieceId     String?
  piece       Piece?      @relation("PieceCustomFieldValues", fields: [pieceId], references: [id], onDelete: Cascade)

  @@map("custom_field_values")
}