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

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

// ─── USERS & AUTH ─────────────────────────────────────────────────────────────

enum Role {
  ADMIN
  QC
  PRODUCTION
  PRODUCTION_LEAD
  LOGISTICS_LEAD
  MANAGEMENT
}

model User {
  id            String    @id @default(cuid())
  email         String    @unique
  name          String
  password      String
  role          Role      @default(PRODUCTION)
  department    String?
  active        Boolean   @default(true)
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt

  sessions      Session[]
  capasOwned    CAPA[]       @relation("CAPAOwner")
  capasRaised   CAPA[]       @relation("CAPARaisedBy")
  auditsLed     Audit[]      @relation("AuditLead")
  ncrsRaised    NCR[]        @relation("NCRRaisedBy")
  submissions   FormSubmission[]
  auditLogs     AuditLog[]
  notifications Notification[]
}

model Session {
  id        String   @id @default(cuid())
  userId    String
  token     String   @unique
  expiresAt DateTime
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
}

// ─── AUDIT TRAIL ──────────────────────────────────────────────────────────────

model AuditLog {
  id         String   @id @default(cuid())
  userId     String
  action     String
  entity     String
  entityId   String
  before     Json?
  after      Json?
  createdAt  DateTime @default(now())
  user       User     @relation(fields: [userId], references: [id])

  @@index([entity, entityId])
  @@index([userId])
  @@index([createdAt])
}

// ─── NOTIFICATIONS ────────────────────────────────────────────────────────────

enum NotifType {
  CAPA_OVERDUE
  CAPA_ASSIGNED
  AUDIT_DUE
  NCR_ESCALATED
  FORM_REVIEW_READY
  DOC_EXPIRING
  STANDARD_APPROVED
  SOLUTION_CONFIRMED
}

model Notification {
  id        String     @id @default(cuid())
  userId    String
  type      NotifType
  title     String
  body      String
  read      Boolean    @default(false)
  link      String?
  createdAt DateTime   @default(now())
  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@index([userId, read])
}

// ─── CAPA ─────────────────────────────────────────────────────────────────────

enum CAPAPriority {
  CRITICAL
  HIGH
  MEDIUM
  LOW
}

enum CAPAStatus {
  OPEN
  IN_PROGRESS
  OVERDUE
  CLOSED
}

model CAPA {
  id          String       @id @default(cuid())
  ref         String       @unique
  title       String
  description String?
  priority    CAPAPriority @default(MEDIUM)
  status      CAPAStatus   @default(OPEN)
  progress    Int          @default(0)
  ownerId     String
  raisedById  String
  dueDate     DateTime
  closedAt    DateTime?
  rootCause   String?
  corrAction  String?
  prevAction  String?
  department  String?
  createdAt   DateTime     @default(now())
  updatedAt   DateTime     @updatedAt

  owner       User         @relation("CAPAOwner", fields: [ownerId], references: [id])
  raisedBy    User         @relation("CAPARaisedBy", fields: [raisedById], references: [id])
  timeline    CAPAEvent[]
  ncrs        NCR[]
  escapes     QualityEscape[]

  @@index([status])
  @@index([ownerId])
  @@index([dueDate])
}

model CAPAEvent {
  id        String   @id @default(cuid())
  capaId    String
  event     String
  note      String?
  createdAt DateTime @default(now())
  capa      CAPA     @relation(fields: [capaId], references: [id], onDelete: Cascade)

  @@index([capaId])
}

// ─── AUDITS ───────────────────────────────────────────────────────────────────

enum AuditType {
  INTERNAL
  SUPPLIER
  EXTERNAL
}

enum AuditStatus {
  SCHEDULED
  IN_PROGRESS
  COMPLETED
  CANCELLED
}

model Audit {
  id          String      @id @default(cuid())
  ref         String      @unique
  name        String
  type        AuditType   @default(INTERNAL)
  status      AuditStatus @default(SCHEDULED)
  leadId      String
  scope       String?
  scheduledAt DateTime
  completedAt DateTime?
  createdAt   DateTime    @default(now())
  updatedAt   DateTime    @updatedAt

  lead        User        @relation("AuditLead", fields: [leadId], references: [id])
  findings    Finding[]

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

enum FindingSeverity {
  OBSERVATION
  MINOR
  MAJOR
  CRITICAL
}

enum FindingStatus {
  OPEN
  IN_PROGRESS
  CLOSED
}

model Finding {
  id          String          @id @default(cuid())
  auditId     String
  description String
  severity    FindingSeverity @default(MINOR)
  status      FindingStatus   @default(OPEN)
  category    String?
  dueDate     DateTime?
  closedAt    DateTime?
  createdAt   DateTime        @default(now())
  audit       Audit           @relation(fields: [auditId], references: [id], onDelete: Cascade)

  @@index([auditId])
}

// ─── NCR ──────────────────────────────────────────────────────────────────────

enum NCRSeverity {
  OBSERVATION
  MINOR
  MAJOR
}

enum NCRStatus {
  OPEN
  INVESTIGATING
  ESCALATED
  RESOLVED
}

model NCR {
  id          String       @id @default(cuid())
  ref         String       @unique
  description String
  source      String?
  severity    NCRSeverity?
  status      NCRStatus    @default(OPEN)
  raisedById  String
  resolvedAt  DateTime?
  resolution  String?
  category    String?
  notified    Boolean      @default(false)
  notifiedAt  DateTime?
  capaId      String?
  createdAt   DateTime     @default(now())
  updatedAt   DateTime     @updatedAt

  raisedBy    User         @relation("NCRRaisedBy", fields: [raisedById], references: [id])
  capa        CAPA?        @relation(fields: [capaId], references: [id])

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

// ─── RESOLUTIONS LIBRARY ──────────────────────────────────────────────────────
// Filed whenever an NCR or quality escape is resolved with a category.
// Searched for "similar past fix" matching on new issues.

model Resolution {
  id         String   @id @default(cuid())
  title      String
  category   String
  resolution String
  linkedRef  String
  createdAt  DateTime @default(now())

  @@index([category])
}

// ─── DOCUMENTS ────────────────────────────────────────────────────────────────

enum DocStatus {
  CURRENT
  PENDING_REVIEW
  EXPIRED
  ARCHIVED
}

enum DocCategory {
  SOP
  POLICY
  FORM
  WORK_INSTRUCTION
  RECORD
}

model Document {
  id          String      @id @default(cuid())
  ref         String      @unique
  title       String
  category    DocCategory @default(SOP)
  revision    String      @default("A")
  status      DocStatus   @default(CURRENT)
  fileUrl     String?
  ownerId     String?
  reviewDate  DateTime?
  approvedAt  DateTime?
  createdAt   DateTime    @default(now())
  updatedAt   DateTime    @updatedAt

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

// ─── RISK REGISTER ────────────────────────────────────────────────────────────

enum RiskLevel {
  LOW
  MEDIUM
  HIGH
  CRITICAL
}

model Risk {
  id           String    @id @default(cuid())
  title        String
  description  String?
  likelihood   Int       @default(1)
  impact       Int       @default(1)
  score        Int       @default(1)
  level        RiskLevel @default(LOW)
  owner        String?
  controls     String?
  reviewDate   DateTime?
  accepted     Boolean   @default(false)
  createdAt    DateTime  @default(now())
  updatedAt    DateTime  @updatedAt

  @@index([level])
}

// ─── SUPPLIERS ────────────────────────────────────────────────────────────────

enum SupplierStatus {
  APPROVED
  UNDER_REVIEW
  SUSPENDED
  INACTIVE
}

enum SupplierTier {
  TIER_1
  TIER_2
  TIER_3
}

model Supplier {
  id          String         @id @default(cuid())
  name        String
  category    String?
  tier        SupplierTier   @default(TIER_2)
  status      SupplierStatus @default(UNDER_REVIEW)
  score       Float?
  contact     String?
  email       String?
  lastAudit   DateTime?
  nextAudit   DateTime?
  notes       String?
  createdAt   DateTime       @default(now())
  updatedAt   DateTime       @updatedAt

  @@index([status])
}

// ─── FIRST BUILD FORMS ────────────────────────────────────────────────────────

enum FieldType {
  SHORT_TEXT
  LONG_TEXT
  NUMBER
  DATE
  SINGLE_CHOICE
  MULTI_CHOICE
  RATING
  PHOTO
}

enum FormStatus {
  DRAFT
  ACTIVE
  SUSPENDED
  REVIEW_READY
  STANDARD_SET
  ARCHIVED
}

model BuildForm {
  id              String       @id @default(cuid())
  name            String
  product         String?
  description     String?
  status          FormStatus   @default(DRAFT)
  minSubmissions  Int          @default(10)
  createdById     String?
  publishedAt     DateTime?
  suspendedAt     DateTime?
  archivedAt      DateTime?
  clonedFromId    String?
  clonedFromName  String?
  createdAt       DateTime     @default(now())
  updatedAt       DateTime     @updatedAt

  fields          FormField[]
  submissions     FormSubmission[]
  standard        QualityStandard?

  @@index([status])
}

model FormField {
  id          String    @id @default(cuid())
  formId      String
  label       String
  type        FieldType @default(SHORT_TEXT)
  hint        String?
  options     String[]
  required    Boolean   @default(false)
  trackStd    Boolean   @default(true)
  order       Int       @default(0)
  form        BuildForm @relation(fields: [formId], references: [id], onDelete: Cascade)

  @@index([formId])
}

model FormSubmission {
  id          String    @id @default(cuid())
  formId      String
  submittedBy String
  data        Json
  createdAt   DateTime  @default(now())

  form        BuildForm @relation(fields: [formId], references: [id])
  user        User      @relation(fields: [submittedBy], references: [id])

  @@index([formId])
  @@index([createdAt])
}

model QualityStandard {
  id          String    @id @default(cuid())
  formId      String    @unique
  title       String
  specs       Json
  status      String    @default("DRAFT")
  approvedBy  String?
  approvedAt  DateTime?
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt

  form        BuildForm @relation(fields: [formId], references: [id])
}

// ─── SETTINGS ─────────────────────────────────────────────────────────────────

model Setting {
  key       String @id
  value     String
  updatedAt DateTime @updatedAt
}

// ─── CLIENT RELEASE / SHIPMENTS ────────────────────────────────────────────────
// "Good status" packages — grouped by product/batch/date — that get
// batch-emailed to clients once everything has passed QC.
// Send access: PRODUCTION_LEAD, LOGISTICS_LEAD, ADMIN.

enum ShipmentItemType {
  FORM_DATA
  NCR_FIX
  AUDIT
  OTHER
}

model Shipment {
  id          String   @id @default(cuid())
  ref         String   @unique
  product     String
  batch       String
  client      String
  clientEmail String?
  shippedAt   DateTime
  sentAt      DateTime?
  sentTo      String?
  createdById String?
  createdAt   DateTime @default(now())

  items       ShipmentItem[]
  escapes     QualityEscape[]

  @@index([product, batch])
}

model ShipmentItem {
  id         String           @id @default(cuid())
  shipmentId String
  label      String
  type       ShipmentItemType @default(OTHER)
  included   Boolean          @default(true)
  order      Int              @default(0)

  shipment   Shipment @relation(fields: [shipmentId], references: [id], onDelete: Cascade)

  @@index([shipmentId])
}

// ─── CLIENT ISSUES (QUALITY ESCAPES) ──────────────────────────────────────────
// A defect that passed QC and reached the client. Reuses the NCR
// investigation/resolution flow, but linked to a shipment, and resolving
// one can add an entry to the living shipping standard.
// Report access: PRODUCTION_LEAD, LOGISTICS_LEAD, ADMIN.

enum EscapeStatus {
  OPEN
  INVESTIGATING
  RESOLVED
  ESCALATED
}

model QualityEscape {
  id           String       @id @default(cuid())
  ref          String       @unique
  shipmentId   String
  description  String
  contact      String?
  severity     NCRSeverity?
  status       EscapeStatus @default(OPEN)
  resolution   String?
  category     String?
  capaId       String?
  standardItemAdded String?
  createdAt    DateTime     @default(now())
  resolvedAt   DateTime?

  shipment     Shipment @relation(fields: [shipmentId], references: [id])
  capa         CAPA?    @relation(fields: [capaId], references: [id])

  @@index([status])
}

// ─── LIVING SHIPPING STANDARD ─────────────────────────────────────────────────
// What must be true before a product gets "good status". Baseline items
// plus items added automatically when a quality escape is resolved.

model ShippingStandardItem {
  id        String   @id @default(cuid())
  text      String
  source    String   @default("Baseline")
  order     Int      @default(0)
  createdAt DateTime @default(now())
}