// V11 Enterprise QMS — SQLite schema
// NOTE: SQLite (Prisma connector) supports neither native enums nor the Json type.
// All former enums are stored as String (validated in app code; union types live in @/types).
// All former Json columns are stored as String (JSON-encoded; (de)serialised in app code).

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

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

// ─── USERS & AUTH ─────────────────────────────────────────────────────────────
// Role: ADMIN | QC | PRODUCTION | PRODUCTION_LEAD | LOGISTICS_LEAD | MANAGEMENT

model User {
  id            String    @id @default(cuid())
  email         String    @unique
  name          String
  password      String
  role          String    @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     String?  // JSON-encoded
  after      String?  // JSON-encoded
  createdAt  DateTime @default(now())
  user       User     @relation(fields: [userId], references: [id])

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

// ─── NOTIFICATIONS ────────────────────────────────────────────────────────────
// type: 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      String
  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 ─────────────────────────────────────────────────────────────────────
// priority: CRITICAL | HIGH | MEDIUM | LOW
// status:   OPEN | IN_PROGRESS | OVERDUE | CLOSED

model CAPA {
  id          String       @id @default(cuid())
  ref         String       @unique
  title       String
  description String?
  priority    String       @default("MEDIUM")
  status      String       @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 ───────────────────────────────────────────────────────────────────
// type:   INTERNAL | SUPPLIER | EXTERNAL
// status: SCHEDULED | IN_PROGRESS | COMPLETED | CANCELLED

model Audit {
  id          String      @id @default(cuid())
  ref         String      @unique
  name        String
  type        String      @default("INTERNAL")
  status      String      @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])
}

// severity: OBSERVATION | MINOR | MAJOR | CRITICAL
// status:   OPEN | IN_PROGRESS | CLOSED
model Finding {
  id          String          @id @default(cuid())
  auditId     String
  description String
  severity    String          @default("MINOR")
  status      String          @default("OPEN")
  category    String?
  dueDate     DateTime?
  closedAt    DateTime?
  createdAt   DateTime        @default(now())
  audit       Audit           @relation(fields: [auditId], references: [id], onDelete: Cascade)

  @@index([auditId])
}

// ─── NCR ──────────────────────────────────────────────────────────────────────
// severity: OBSERVATION | MINOR | MAJOR  (null = needs triage)
// status:   OPEN | INVESTIGATING | ESCALATED | RESOLVED

model NCR {
  id          String       @id @default(cuid())
  ref         String       @unique
  description String
  source      String?
  severity    String?
  status      String       @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 ────────────────────────────────────────────────────────────────
// status:   CURRENT | PENDING_REVIEW | EXPIRED | ARCHIVED
// category: SOP | POLICY | FORM | WORK_INSTRUCTION | RECORD

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

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

// ─── RISK REGISTER ────────────────────────────────────────────────────────────
// level: 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        String    @default("LOW")
  owner        String?
  controls     String?
  reviewDate   DateTime?
  accepted     Boolean   @default(false)
  createdAt    DateTime  @default(now())
  updatedAt    DateTime  @updatedAt

  @@index([level])
}

// ─── SUPPLIERS ────────────────────────────────────────────────────────────────
// status: APPROVED | UNDER_REVIEW | SUSPENDED | INACTIVE
// tier:   TIER_1 | TIER_2 | TIER_3

model Supplier {
  id          String         @id @default(cuid())
  name        String
  category    String?
  tier        String         @default("TIER_2")
  status      String         @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 ────────────────────────────────────────────────────────
// FieldType:  SHORT_TEXT | LONG_TEXT | NUMBER | DATE | SINGLE_CHOICE | MULTI_CHOICE | RATING | PHOTO
// FormStatus: DRAFT | ACTIVE | SUSPENDED | REVIEW_READY | STANDARD_SET | ARCHIVED

model BuildForm {
  id              String       @id @default(cuid())
  name            String
  product         String?
  description     String?
  status          String       @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        String    @default("SHORT_TEXT")
  hint        String?
  options     String    @default("[]") // JSON-encoded string[] (SQLite has no scalar lists)
  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        String    // JSON-encoded answers
  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       String    // JSON-encoded
  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.
// ShipmentItem.type: 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       String   @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.
// severity: OBSERVATION | MINOR | MAJOR  (null = needs triage)
// status:   OPEN | INVESTIGATING | RESOLVED | ESCALATED

model QualityEscape {
  id           String       @id @default(cuid())
  ref          String       @unique
  shipmentId   String
  description  String
  contact      String?
  severity     String?
  status       String       @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())
}