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

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

model Tenant {
  id        String   @id @default(uuid())
  name      String
  slug      String   @unique
  logo      String?
  active    Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  users     User[]
  workflows Workflow[]
  categories Category[]
}

model User {
  id           String   @id @default(uuid())
  email        String   @unique
  passwordHash String
  firstName    String
  lastName     String
  role         Role
  tenantId     String?
  tenant       Tenant?  @relation(fields: [tenantId], references: [id])
  active       Boolean  @default(true)
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt
  createdWorkflows  Workflow[] @relation("CreatedBy")
  updatedWorkflows  Workflow[] @relation("UpdatedBy")
}

enum Role {
  SYSTEM_ADMIN
  TECHNICIAN
  CUSTOMER_ADMIN
  CUSTOMER_USER
}

model Category {
  id        String   @id @default(uuid())
  name      String
  icon      String?
  tenantId  String?
  tenant    Tenant?  @relation(fields: [tenantId], references: [id])
  workflows Workflow[]
  createdAt DateTime @default(now())
}

model Workflow {
  id          String   @id @default(uuid())
  title       String
  description String?
  tenantId    String
  tenant      Tenant   @relation(fields: [tenantId], references: [id])
  categoryId  String?
  category    Category? @relation(fields: [categoryId], references: [id])
  status      WorkflowStatus @default(DRAFT)
  version     Int      @default(1)
  isTemplate  Boolean  @default(false)
  tags        String[]
  createdById String
  createdBy   User     @relation("CreatedBy", fields: [createdById], references: [id])
  updatedById String?
  updatedBy   User?    @relation("UpdatedBy", fields: [updatedById], references: [id])
  steps       WorkflowStep[]
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

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

enum WorkflowStatus {
  DRAFT
  REVIEW
  PUBLISHED
  ARCHIVED
}

model WorkflowStep {
  id          String   @id @default(uuid())
  workflowId  String
  workflow    Workflow  @relation(fields: [workflowId], references: [id], onDelete: Cascade)
  order       Int
  title       String
  content     String
  type        StepType @default(INSTRUCTION)
  isRequired  Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  @@index([workflowId])
}

enum StepType {
  INSTRUCTION
  CHECKLIST
  WARNING
  INFO
  COMMAND
}