// 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")
}

model User {
  id                  Int           @id @default(autoincrement())
  username            String?       @unique
  email               String        @unique
  password            String
  name                String
  role                String        @default("user") // "user", "approver", "super_admin"
  failedLoginAttempts Int           @default(0)
  lockoutUntil        DateTime?
  requests            Request[]
  approvals           ApprovalLog[]
  activityLogs        ActivityLog[]
  categories          Category[]
  createdAt           DateTime      @default(now())
  updatedAt           DateTime      @updatedAt
}

model SystemSettings {
  id                Int      @id @default(1)
  telegramBotToken  String?
  telegramChatId    String?
  isTelegramEnabled Boolean  @default(false)

  // Email Config
  isEmailEnabled    Boolean  @default(false)
  smtpHost          String?
  smtpPort          Int?
  smtpUser          String?
  smtpPass          String?
  targetEmail       String?  // Comma separated for multiple

  updatedAt         DateTime @updatedAt
}

model Category {
  id        Int      @id @default(autoincrement())
  name      String   @unique
  users     User[]
  items     Item[]
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

model Item {
  id            Int       @id @default(autoincrement())
  name          String    @unique
  totalQuantity Int       @default(0)
  borrowedQty   Int       @default(0)
  trialQty      Int       @default(0)
  billedQty     Int       @default(0)
  availableQty  Int       @default(0)
  damagedQty    Int       @default(0)
  soldQty       Int       @default(0)
  categoryId    Int?
  category      Category? @relation(fields: [categoryId], references: [id])
  requests      Request[]
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
}

model Request {
  id           Int           @id @default(autoincrement())
  userId       Int
  itemId       Int
  quantity     Int           @default(1)
  purpose      String
  company      String
  address      String
  requestDate  DateTime      @default(now())
  status       String        @default("pending") // "pending", "approved_1", "approved_2", "rejected"
  type         String        @default("borrow") // "borrow", "trial", "billed", "purchase", "return_borrow", "return_trial", "return_billed"
  notes        String?
  serialNumber String?
  user         User          @relation(fields: [userId], references: [id])
  item         Item          @relation(fields: [itemId], references: [id])
  approvalLogs ApprovalLog[]
  createdAt    DateTime      @default(now())
  updatedAt    DateTime      @updatedAt
}

model ApprovalLog {
  id           Int      @id @default(autoincrement())
  requestId    Int
  approverId   Int
  approvalStep Int // 1 or 2
  status       String // "approved", "rejected"
  request      Request  @relation(fields: [requestId], references: [id])
  approver     User     @relation(fields: [approverId], references: [id])
  createdAt    DateTime @default(now())
}

model ActivityLog {
  id        Int      @id @default(autoincrement())
  userId    Int
  user      User     @relation(fields: [userId], references: [id])
  action    String
  details   String
  type      String // "request", "approval", "admin_item", "admin_user"
  createdAt DateTime @default(now())
}