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backend/node_modules/.prisma/client/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "mysql"
+  url      = env("DATABASE_URL")
+}
+
+// ==================== APP SETTINGS ====================
+
+model AppSetting {
+  id        Int      @id @default(autoincrement())
+  key       String   @unique
+  value     String   @db.Text
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+// ==================== USERS & AUTH ====================
+
+model User {
+  id         Int        @id @default(autoincrement())
+  email      String     @unique
+  password   String
+  firstName  String
+  lastName   String
+  isActive   Boolean    @default(true)
+  customerId Int?       @unique
+  customer   Customer?  @relation(fields: [customerId], references: [id])
+  roles      UserRole[]
+  createdAt  DateTime   @default(now())
+  updatedAt  DateTime   @updatedAt
+}
+
+model Role {
+  id          Int              @id @default(autoincrement())
+  name        String           @unique
+  description String?
+  permissions RolePermission[]
+  users       UserRole[]
+  createdAt   DateTime         @default(now())
+  updatedAt   DateTime         @updatedAt
+}
+
+model Permission {
+  id       Int              @id @default(autoincrement())
+  resource String
+  action   String
+  roles    RolePermission[]
+
+  @@unique([resource, action])
+}
+
+model RolePermission {
+  roleId       Int
+  permissionId Int
+  role         Role       @relation(fields: [roleId], references: [id], onDelete: Cascade)
+  permission   Permission @relation(fields: [permissionId], references: [id], onDelete: Cascade)
+
+  @@id([roleId, permissionId])
+}
+
+model UserRole {
+  userId Int
+  roleId Int
+  user   User @relation(fields: [userId], references: [id], onDelete: Cascade)
+  role   Role @relation(fields: [roleId], references: [id], onDelete: Cascade)
+
+  @@id([userId, roleId])
+}
+
+// ==================== CUSTOMERS ====================
+
+enum CustomerType {
+  PRIVATE
+  BUSINESS
+}
+
+model Customer {
+  id                       Int          @id @default(autoincrement())
+  customerNumber           String       @unique
+  type                     CustomerType @default(PRIVATE)
+  salutation               String?
+  firstName                String
+  lastName                 String
+  companyName              String?
+  foundingDate             DateTime? // Gründungsdatum (für Firmen)
+  birthDate                DateTime?
+  birthPlace               String?
+  email                    String?
+  phone                    String?
+  mobile                   String?
+  taxNumber                String?
+  businessRegistrationPath String? // PDF-Pfad zur Gewerbeanmeldung
+  commercialRegisterPath   String? // PDF-Pfad zum Handelsregisterauszug
+  commercialRegisterNumber String? // Handelsregisternummer (Text)
+  privacyPolicyPath        String? // PDF-Pfad zur Datenschutzerklärung (für alle Kunden)
+  notes                    String?      @db.Text
+
+  // ===== Portal-Zugangsdaten =====
+  portalEnabled           Boolean   @default(false) // Portal aktiviert?
+  portalEmail             String?   @unique // Portal-Login E-Mail
+  portalPasswordHash      String? // Gehashtes Passwort (für Login)
+  portalPasswordEncrypted String? // Verschlüsseltes Passwort (für Anzeige)
+  portalLastLogin         DateTime? // Letzte Anmeldung
+
+  user              User?
+  addresses         Address[]
+  bankCards         BankCard[]
+  identityDocuments IdentityDocument[]
+  meters            Meter[]
+  stressfreiEmails  StressfreiEmail[]
+  contracts         Contract[]
+
+  // Vertreter-Beziehungen (Kunde kann für andere Kunden handeln)
+  representingFor CustomerRepresentative[] @relation("RepresentativeCustomer")
+  representedBy   CustomerRepresentative[] @relation("RepresentedCustomer")
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+// ==================== CUSTOMER REPRESENTATIVES ====================
+// Vertretungsbeziehung: Ein Kunde kann die Verträge eines anderen Kunden einsehen
+// z.B. Sohn (representativeId) kann Verträge der Mutter (customerId) sehen
+
+model CustomerRepresentative {
+  id               Int      @id @default(autoincrement())
+  customerId       Int // Der Kunde, dessen Verträge eingesehen werden (z.B. Mutter)
+  customer         Customer @relation("RepresentedCustomer", fields: [customerId], references: [id], onDelete: Cascade)
+  representativeId Int // Der Kunde, der einsehen darf (z.B. Sohn)
+  representative   Customer @relation("RepresentativeCustomer", fields: [representativeId], references: [id], onDelete: Cascade)
+  notes            String? // Notizen zur Vertretung
+  isActive         Boolean  @default(true)
+  createdAt        DateTime @default(now())
+  updatedAt        DateTime @updatedAt
+
+  @@unique([customerId, representativeId]) // Keine doppelten Einträge
+}
+
+// ==================== ADDRESSES ====================
+
+enum AddressType {
+  DELIVERY_RESIDENCE
+  BILLING
+}
+
+model Address {
+  id          Int         @id @default(autoincrement())
+  customerId  Int
+  customer    Customer    @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  type        AddressType @default(DELIVERY_RESIDENCE)
+  street      String
+  houseNumber String
+  postalCode  String
+  city        String
+  country     String      @default("Deutschland")
+  isDefault   Boolean     @default(false)
+  contracts   Contract[]
+  createdAt   DateTime    @default(now())
+  updatedAt   DateTime    @updatedAt
+}
+
+// ==================== BANK CARDS ====================
+
+model BankCard {
+  id            Int        @id @default(autoincrement())
+  customerId    Int
+  customer      Customer   @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  accountHolder String
+  iban          String
+  bic           String?
+  bankName      String?
+  expiryDate    DateTime?
+  documentPath  String? // Pfad zur hochgeladenen PDF
+  isActive      Boolean    @default(true)
+  contracts     Contract[]
+  createdAt     DateTime   @default(now())
+  updatedAt     DateTime   @updatedAt
+}
+
+// ==================== IDENTITY DOCUMENTS ====================
+
+enum DocumentType {
+  ID_CARD
+  PASSPORT
+  DRIVERS_LICENSE
+  OTHER
+}
+
+model IdentityDocument {
+  id               Int          @id @default(autoincrement())
+  customerId       Int
+  customer         Customer     @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  type             DocumentType @default(ID_CARD)
+  documentNumber   String
+  issuingAuthority String?
+  issueDate        DateTime?
+  expiryDate       DateTime?
+  documentPath     String? // Pfad zur hochgeladenen PDF
+  isActive         Boolean      @default(true)
+  // Führerschein-spezifische Felder
+  licenseClasses   String? // z.B. "B, BE, AM, L" - kommasepariert
+  licenseIssueDate DateTime? // Datum des Führerscheinerwerbs (Klasse B)
+  contracts        Contract[]
+  createdAt        DateTime     @default(now())
+  updatedAt        DateTime     @updatedAt
+}
+
+// ==================== EMAIL PROVIDER CONFIG (Plesk, cPanel etc.) ====================
+
+enum EmailProviderType {
+  PLESK
+  CPANEL
+  DIRECTADMIN
+}
+
+model EmailProviderConfig {
+  id                  Int               @id @default(autoincrement())
+  name                String            @unique // z.B. "Plesk Hauptserver"
+  type                EmailProviderType
+  apiUrl              String // API-URL (z.B. https://server.de:8443)
+  apiKey              String? // API-Key (verschlüsselt)
+  username            String? // Benutzername für API
+  passwordEncrypted   String? // Passwort (verschlüsselt)
+  domain              String // Domain für E-Mails (z.B. stressfrei-wechseln.de)
+  defaultForwardEmail String? // Standard-Weiterleitungsadresse (unsere eigene)
+  isActive            Boolean           @default(true)
+  isDefault           Boolean           @default(false) // Standard-Provider
+  createdAt           DateTime          @default(now())
+  updatedAt           DateTime          @updatedAt
+}
+
+// ==================== STRESSFREI-WECHSELN EMAIL ADDRESSES ====================
+
+model StressfreiEmail {
+  id             Int        @id @default(autoincrement())
+  customerId     Int
+  customer       Customer   @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  email          String // Die Weiterleitungs-E-Mail-Adresse
+  platform       String? // Für welche Plattform (z.B. "Freenet", "Klarmobil")
+  notes          String?    @db.Text // Optionale Notizen
+  isActive       Boolean    @default(true)
+  isProvisioned  Boolean    @default(false) // Wurde bei Provider angelegt?
+  provisionedAt  DateTime? // Wann wurde provisioniert?
+  provisionError String?    @db.Text // Fehlermeldung falls Provisionierung fehlschlug
+  contracts      Contract[] // Verträge die diese E-Mail als Benutzername verwenden
+  createdAt      DateTime   @default(now())
+  updatedAt      DateTime   @updatedAt
+}
+
+// ==================== METERS (Energy) ====================
+
+enum MeterType {
+  ELECTRICITY
+  GAS
+}
+
+model Meter {
+  id            Int                     @id @default(autoincrement())
+  customerId    Int
+  customer      Customer                @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  meterNumber   String
+  type          MeterType
+  location      String?
+  isActive      Boolean                 @default(true)
+  readings      MeterReading[]
+  energyDetails EnergyContractDetails[]
+  createdAt     DateTime                @default(now())
+  updatedAt     DateTime                @updatedAt
+}
+
+model MeterReading {
+  id          Int      @id @default(autoincrement())
+  meterId     Int
+  meter       Meter    @relation(fields: [meterId], references: [id], onDelete: Cascade)
+  readingDate DateTime
+  value       Float
+  unit        String   @default("kWh")
+  notes       String?
+  createdAt   DateTime @default(now())
+}
+
+// ==================== SALES PLATFORMS ====================
+
+model SalesPlatform {
+  id          Int        @id @default(autoincrement())
+  name        String     @unique
+  contactInfo String?    @db.Text
+  isActive    Boolean    @default(true)
+  contracts   Contract[]
+  createdAt   DateTime   @default(now())
+  updatedAt   DateTime   @updatedAt
+}
+
+// ==================== CANCELLATION PERIODS ====================
+
+model CancellationPeriod {
+  id          Int        @id @default(autoincrement())
+  code        String     @unique // z.B. "14T", "1M", "3M", "12M", "1J"
+  description String // z.B. "14 Tage", "1 Monat", "3 Monate"
+  isActive    Boolean    @default(true)
+  contracts   Contract[]
+  createdAt   DateTime   @default(now())
+  updatedAt   DateTime   @updatedAt
+}
+
+// ==================== CONTRACT DURATIONS ====================
+
+model ContractDuration {
+  id          Int        @id @default(autoincrement())
+  code        String     @unique // z.B. "12M", "24M", "1J", "2J"
+  description String // z.B. "12 Monate", "24 Monate", "1 Jahr"
+  isActive    Boolean    @default(true)
+  contracts   Contract[]
+  createdAt   DateTime   @default(now())
+  updatedAt   DateTime   @updatedAt
+}
+
+// ==================== PROVIDERS (Anbieter) ====================
+
+model Provider {
+  id                Int        @id @default(autoincrement())
+  name              String     @unique // Anbietername
+  portalUrl         String? // Kundenkontourl (Login-Seite)
+  usernameFieldName String? // Benutzernamefeld (z.B. "email", "username")
+  passwordFieldName String? // Kennwortfeld (z.B. "password", "pwd")
+  isActive          Boolean    @default(true)
+  tariffs           Tariff[]
+  contracts         Contract[]
+  createdAt         DateTime   @default(now())
+  updatedAt         DateTime   @updatedAt
+}
+
+// ==================== TARIFFS (Tarife) ====================
+
+model Tariff {
+  id         Int        @id @default(autoincrement())
+  providerId Int
+  provider   Provider   @relation(fields: [providerId], references: [id], onDelete: Cascade)
+  name       String // Tarifname
+  isActive   Boolean    @default(true)
+  contracts  Contract[]
+  createdAt  DateTime   @default(now())
+  updatedAt  DateTime   @updatedAt
+
+  @@unique([providerId, name]) // Eindeutiger Tarif pro Anbieter
+}
+
+// ==================== CONTRACT CATEGORIES ====================
+
+model ContractCategory {
+  id        Int        @id @default(autoincrement())
+  code      String     @unique // Technischer Code (z.B. ELECTRICITY, GAS)
+  name      String // Anzeigename (z.B. Strom, Gas)
+  icon      String? // Icon-Name für UI (z.B. "Zap", "Flame")
+  color     String? // Farbe für UI (z.B. "#FFC107")
+  sortOrder Int        @default(0)
+  isActive  Boolean    @default(true)
+  contracts Contract[]
+  createdAt DateTime   @default(now())
+  updatedAt DateTime   @updatedAt
+}
+
+// ==================== CONTRACTS ====================
+
+// Legacy Enum - wird durch ContractCategory ersetzt
+enum ContractType {
+  ELECTRICITY
+  GAS
+  DSL
+  CABLE
+  FIBER
+  MOBILE
+  TV
+  CAR_INSURANCE
+}
+
+enum ContractStatus {
+  DRAFT
+  PENDING
+  ACTIVE
+  CANCELLED
+  EXPIRED
+  DEACTIVATED
+}
+
+model Contract {
+  id             Int            @id @default(autoincrement())
+  contractNumber String         @unique
+  customerId     Int
+  customer       Customer       @relation(fields: [customerId], references: [id], onDelete: Cascade)
+  type           ContractType
+  status         ContractStatus @default(DRAFT)
+
+  // Neue konfigurierbare Kategorie (ersetzt langfristig das type-Enum)
+  contractCategoryId Int?
+  contractCategory   ContractCategory? @relation(fields: [contractCategoryId], references: [id])
+
+  addressId Int?
+  address   Address? @relation(fields: [addressId], references: [id])
+
+  bankCardId Int?
+  bankCard   BankCard? @relation(fields: [bankCardId], references: [id])
+
+  identityDocumentId Int?
+  identityDocument   IdentityDocument? @relation(fields: [identityDocumentId], references: [id])
+
+  salesPlatformId Int?
+  salesPlatform   SalesPlatform? @relation(fields: [salesPlatformId], references: [id])
+
+  cancellationPeriodId Int?
+  cancellationPeriod   CancellationPeriod? @relation(fields: [cancellationPeriodId], references: [id])
+
+  contractDurationId Int?
+  contractDuration   ContractDuration? @relation(fields: [contractDurationId], references: [id])
+
+  previousContractId Int?      @unique
+  previousContract   Contract? @relation("ContractHistory", fields: [previousContractId], references: [id])
+  followUpContract   Contract? @relation("ContractHistory")
+
+  // Anbieter & Tarif (neue Verknüpfung)
+  providerId Int?
+  provider   Provider? @relation(fields: [providerId], references: [id])
+  tariffId   Int?
+  tariff     Tariff?   @relation(fields: [tariffId], references: [id])
+
+  // Legacy-Felder (für Abwärtskompatibilität)
+  providerName             String?
+  tariffName               String?
+  customerNumberAtProvider String?
+  priceFirst12Months       String? // Preis erste 12 Monate
+  priceFrom13Months        String? // Preis ab 13. Monat
+  priceAfter24Months       String? // Preis nach 24 Monaten
+
+  startDate  DateTime?
+  endDate    DateTime? // Wird aus startDate + contractDuration berechnet
+  commission Float?
+
+  // Kündigungsdokumente
+  cancellationLetterPath              String? // Kündigungsschreiben PDF
+  cancellationConfirmationPath        String? // Kündigungsbestätigung PDF
+  cancellationLetterOptionsPath       String? // Kündigungsschreiben Optionen PDF
+  cancellationConfirmationOptionsPath String? // Kündigungsbestätigung Optionen PDF
+
+  // Kündigungsdaten
+  cancellationConfirmationDate        DateTime? // Kündigungsbestätigungsdatum
+  cancellationConfirmationOptionsDate DateTime? // Kündigungsbestätigungsoptionendatum
+  wasSpecialCancellation              Boolean   @default(false) // Wurde sondergekündigt?
+
+  portalUsername          String?
+  portalPasswordEncrypted String?
+
+  // Stressfrei-Wechseln E-Mail als Benutzername (Alternative zu portalUsername)
+  stressfreiEmailId Int?
+  stressfreiEmail   StressfreiEmail? @relation(fields: [stressfreiEmailId], references: [id])
+
+  notes String? @db.Text
+
+  energyDetails       EnergyContractDetails?
+  internetDetails     InternetContractDetails?
+  mobileDetails       MobileContractDetails?
+  tvDetails           TvContractDetails?
+  carInsuranceDetails CarInsuranceDetails?
+
+  tasks ContractTask[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+// ==================== CONTRACT TASKS ====================
+
+enum ContractTaskStatus {
+  OPEN
+  COMPLETED
+}
+
+model ContractTask {
+  id              Int                   @id @default(autoincrement())
+  contractId      Int
+  contract        Contract              @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  title           String
+  description     String?               @db.Text
+  status          ContractTaskStatus    @default(OPEN)
+  visibleInPortal Boolean               @default(false)
+  createdBy       String? // Name des Erstellers
+  completedAt     DateTime?
+  subtasks        ContractTaskSubtask[]
+  createdAt       DateTime              @default(now())
+  updatedAt       DateTime              @updatedAt
+}
+
+model ContractTaskSubtask {
+  id          Int                @id @default(autoincrement())
+  taskId      Int
+  task        ContractTask       @relation(fields: [taskId], references: [id], onDelete: Cascade)
+  title       String
+  status      ContractTaskStatus @default(OPEN)
+  createdBy   String?
+  completedAt DateTime?
+  createdAt   DateTime           @default(now())
+  updatedAt   DateTime           @updatedAt
+}
+
+// ==================== ENERGY CONTRACT DETAILS ====================
+
+model EnergyContractDetails {
+  id                     Int      @id @default(autoincrement())
+  contractId             Int      @unique
+  contract               Contract @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  meterId                Int?
+  meter                  Meter?   @relation(fields: [meterId], references: [id])
+  annualConsumption      Float?
+  basePrice              Float?
+  unitPrice              Float?
+  bonus                  Float?
+  previousProviderName   String?
+  previousCustomerNumber String?
+}
+
+// ==================== INTERNET CONTRACT DETAILS ====================
+
+model InternetContractDetails {
+  id                        Int           @id @default(autoincrement())
+  contractId                Int           @unique
+  contract                  Contract      @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  downloadSpeed             Int?
+  uploadSpeed               Int?
+  routerModel               String?
+  routerSerialNumber        String?
+  installationDate          DateTime?
+  // Internet-Zugangsdaten
+  internetUsername          String?
+  internetPasswordEncrypted String? // Verschlüsselt gespeichert
+  // Glasfaser-spezifisch
+  homeId                    String?
+  // Vodafone DSL/Kabel spezifisch
+  activationCode            String?
+  phoneNumbers              PhoneNumber[]
+}
+
+model PhoneNumber {
+  id                        Int                     @id @default(autoincrement())
+  internetContractDetailsId Int
+  internetDetails           InternetContractDetails @relation(fields: [internetContractDetailsId], references: [id], onDelete: Cascade)
+  phoneNumber               String
+  isMain                    Boolean                 @default(false)
+  // SIP-Zugangsdaten
+  sipUsername               String?
+  sipPasswordEncrypted      String? // Verschlüsselt gespeichert
+  sipServer                 String?
+}
+
+// ==================== MOBILE CONTRACT DETAILS ====================
+
+model MobileContractDetails {
+  id               Int       @id @default(autoincrement())
+  contractId       Int       @unique
+  contract         Contract  @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  requiresMultisim Boolean   @default(false) // Multisim erforderlich?
+  dataVolume       Float?
+  includedMinutes  Int?
+  includedSMS      Int?
+  deviceModel      String?
+  deviceImei       String?
+  simCards         SimCard[]
+  // Legacy-Felder (für Abwärtskompatibilität, werden durch simCards ersetzt)
+  phoneNumber      String?
+  simCardNumber    String?
+}
+
+model SimCard {
+  id              Int                   @id @default(autoincrement())
+  mobileDetailsId Int
+  mobileDetails   MobileContractDetails @relation(fields: [mobileDetailsId], references: [id], onDelete: Cascade)
+  phoneNumber     String? // Rufnummer
+  simCardNumber   String? // SIM-Kartennummer
+  pin             String? // PIN (verschlüsselt gespeichert)
+  puk             String? // PUK (verschlüsselt gespeichert)
+  isMultisim      Boolean               @default(false) // Ist dies eine Multisim-Karte?
+  isMain          Boolean               @default(false) // Ist dies die Hauptkarte?
+  createdAt       DateTime              @default(now())
+  updatedAt       DateTime              @updatedAt
+}
+
+// ==================== TV CONTRACT DETAILS ====================
+
+model TvContractDetails {
+  id              Int      @id @default(autoincrement())
+  contractId      Int      @unique
+  contract        Contract @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  receiverModel   String?
+  smartcardNumber String?
+  package         String?
+}
+
+// ==================== CAR INSURANCE DETAILS ====================
+
+enum InsuranceType {
+  LIABILITY
+  PARTIAL
+  FULL
+}
+
+model CarInsuranceDetails {
+  id                Int           @id @default(autoincrement())
+  contractId        Int           @unique
+  contract          Contract      @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  licensePlate      String?
+  hsn               String?
+  tsn               String?
+  vin               String?
+  vehicleType       String?
+  firstRegistration DateTime?
+  noClaimsClass     String?
+  insuranceType     InsuranceType @default(LIABILITY)
+  deductiblePartial Float?
+  deductibleFull    Float?
+  policyNumber      String?
+  previousInsurer   String?
+}