datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model Tenant {
  id        String   @id @default(uuid())
  name      String
  slug      String   @unique
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  users     User[]
  ldapConfig LdapConfig?
}

enum Role {
  SUPER_ADMIN
  ADMIN
  USER
}

model User {
  id                  String    @id @default(uuid())
  username            String    @unique
  email               String    @unique
  passwordHash        String?
  displayName         String?
  role                Role      @default(USER)
  isActive            Boolean   @default(true)
  mustChangePassword  Boolean   @default(false)
  ldapDn              String?
  tenantId            String
  tenant              Tenant    @relation(fields: [tenantId], references: [id])
  createdAt           DateTime  @default(now())
  updatedAt           DateTime  @updatedAt
  lastLoginAt         DateTime?
  avatarPath          String?
  passwordResetTokens PasswordResetToken[]

  @@index([tenantId])
  @@index([username])
  @@index([email])
}

model PasswordResetToken {
  id        String    @id @default(uuid())
  token     String    @unique
  userId    String
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  expiresAt DateTime
  usedAt    DateTime?
  createdAt DateTime  @default(now())
}

model LdapConfig {
  id              String             @id @default(uuid())
  tenantId        String             @unique
  tenant          Tenant             @relation(fields: [tenantId], references: [id])
  serverUrl       String
  baseDn          String
  bindDn          String
  bindPassword    String
  searchFilter    String             @default("(objectClass=person)")
  syncIntervalMin Int                @default(60)
  isActive        Boolean            @default(true)
  lastSyncAt      DateTime?
  createdAt       DateTime           @default(now())
  updatedAt       DateTime           @updatedAt
  fieldMappings   LdapFieldMapping[]
}

model LdapFieldMapping {
  id           String     @id @default(uuid())
  ldapConfigId String
  ldapConfig   LdapConfig @relation(fields: [ldapConfigId], references: [id], onDelete: Cascade)
  ldapField    String
  tesseraField String
  isDefault    Boolean    @default(false)
  createdAt    DateTime   @default(now())

  @@unique([ldapConfigId, ldapField])
}

model Module {
  id          String                   @id @default(uuid())
  slug        String                   @unique
  name        String
  version     String
  category    String
  description Json
  icon        String?
  isSystem    Boolean                  @default(false)
  createdAt   DateTime                 @default(now())
  updatedAt   DateTime                 @updatedAt
  activations TenantModuleActivation[]
}

model TenantModuleActivation {
  id          String   @id @default(uuid())
  tenantId    String
  moduleId    String
  isActive    Boolean  @default(true)
  activatedAt DateTime @default(now())
  module      Module   @relation(fields: [moduleId], references: [id], onDelete: Cascade)

  @@unique([tenantId, moduleId])
  @@index([tenantId])
}

model DashboardLayout {
  id        String   @id @default(uuid())
  userId    String   @unique
  tenantId  String
  layouts   Json     @default("{}")
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  @@index([tenantId])
}

model WidgetInstance {
  id         String   @id @default(uuid())
  userId     String
  tenantId   String
  widgetType String
  config     Json     @default("{}")
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  @@index([userId])
  @@index([tenantId])
}

model SearchProvider {
  id          String   @id @default(uuid())
  userId      String?
  tenantId    String?
  name        String
  urlTemplate String
  isDefault   Boolean  @default(false)
  createdAt   DateTime @default(now())

  @@index([userId])
}

model CalendarSource {
  id                String    @id @default(uuid())
  userId            String
  tenantId          String
  name              String
  type              String    // 'caldav' | 'ics' | 'exchange'
  exchangeMode      String?   // 'ews' | 'graph' — only for exchange type
  url               String
  username          String?
  encryptedPassword String?   // AES-256-GCM ciphertext (iv:authTag:ciphertext hex)
  color             String?   @default("#3B82F6")
  isVisible         Boolean   @default(true)
  syncIntervalMin   Int       @default(15)
  lastSyncAt        DateTime?
  lastSyncError     String?
  createdAt         DateTime  @default(now())
  updatedAt         DateTime  @updatedAt

  @@index([userId])
  @@index([tenantId])
}

model DkvModuleConfig {
  id                  String   @id @default(uuid())
  tenantId            String   @unique
  protocol            String   @default("imap")        // 'imap' | 'exchange'
  host                String?
  port                Int?
  encryption          String   @default("ssl-tls")     // 'none' | 'starttls' | 'ssl-tls'
  folder              String   @default("INBOX")
  senderFilter        String?
  pollIntervalMin     Int      @default(60)
  isActive            Boolean  @default(false)
  exportRecipient     String?
  vehicleFormatString String   @default("{Marke}/{Modell}/{Kennzeichen}")
  domain              String?  // Exchange only: Windows domain (optional)
  encryptedInboxCreds String?  // AES-256-GCM: JSON { username, password } encrypted
  createdAt           DateTime @default(now())
  updatedAt           DateTime @updatedAt

  @@index([tenantId])
}

model DkvVehicleMaster {
  id          String   @id @default(uuid())
  tenantId    String
  kennzeichen String
  marke       String
  modell      String
  fahrer      String   // "Vorname Nachname"
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  @@unique([tenantId, kennzeichen])
  @@index([tenantId])
}

model DkvInvoiceHistory {
  id                  String   @id @default(uuid())
  tenantId            String
  datumZeit           DateTime @default(now())
  rechnungsnummer     String
  anzahlFahrzeuge     Int      @default(0)
  anzahlTransaktionen Int      @default(0)
  status              String   // 'Verarbeitet' | 'Fehler' | 'Versand fehlgeschlagen'
  errorMessage        String?
  exportFilename      String?
  createdAt           DateTime @default(now())

  @@index([tenantId])
  @@index([datumZeit])
}

model SmtpConfig {
  id                String   @id @default(uuid())
  tenantId          String   @unique
  host              String
  port              Int      @default(587)
  encryption        String   @default("starttls")  // 'none' | 'starttls' | 'ssl-tls'
  username          String?
  encryptedPassword String?  // AES-256-GCM via CalendarCryptoService
  fromAddress       String
  createdAt         DateTime @default(now())
  updatedAt         DateTime @updatedAt
}