// NOTE: provider is temporarily set to "sqlite" for Phase 1 local verification.
// Flip to "postgresql" once Docker + docker-compose Postgres is available.
// All cascade rules and indexes below are portable between providers.
//
// Postgres-only additions applied post-cutover (see packages/db/POSTGRES_FTS.md):
//   * Generated tsvector column on Part(serial, mpn, notes) + GIN index (Phase 3 scope).
//   * WebhookSubscription.events and SavedView.filterJson currently stored as String (JSON
//     text) for SQLite portability; on Postgres these become String[] and Jsonb respectively.
generator client {
  provider = "prisma-client-js"
}

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

model User {
  id            String         @id @default(uuid())
  username      String         @unique
  email         String         @unique
  passwordHash  String
  role          String         @default("TECHNICIAN")
  createdAt     DateTime       @default(now())
  updatedAt     DateTime       @updatedAt
  partEvents    PartEvent[]
  hostEvents    HostEvent[]
  refreshTokens RefreshToken[]
  custodyParts  Part[]         @relation("Custody")
  repairs       Repair[]
  savedViews    SavedView[]
  csvImportJobs CsvImportJob[]
}

model RefreshToken {
  id         String    @id @default(uuid())
  userId     String
  user       User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  tokenHash  String    @unique
  expiresAt  DateTime
  revokedAt  DateTime?
  replacedBy String?
  createdAt  DateTime  @default(now())

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

model Manufacturer {
  id         String      @id @default(uuid())
  name       String      @unique
  createdAt  DateTime    @default(now())
  updatedAt  DateTime    @updatedAt
  parts      Part[]
  partModels PartModel[]
}

model PartModel {
  id             String       @id @default(uuid())
  manufacturerId String
  manufacturer   Manufacturer @relation(fields: [manufacturerId], references: [id], onDelete: Restrict)
  mpn            String
  eolDate        DateTime?
  destroyOnFail  Boolean      @default(false)
  notes          String?
  categoryId     String?
  category       Category?    @relation(fields: [categoryId], references: [id], onDelete: SetNull)
  createdAt      DateTime     @default(now())
  updatedAt      DateTime     @updatedAt
  parts          Part[]

  @@unique([manufacturerId, mpn])
  @@index([manufacturerId])
  @@index([eolDate])
  @@index([categoryId])
}

model Site {
  id        String   @id @default(uuid())
  name      String   @unique
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  rooms     Room[]
}

model Room {
  id        String   @id @default(uuid())
  name      String
  siteId    String
  site      Site     @relation(fields: [siteId], references: [id], onDelete: Cascade)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  bins      Bin[]

  @@unique([siteId, name])
  @@index([siteId])
}

model Bin {
  id        String   @id @default(uuid())
  name      String
  roomId    String
  room      Room     @relation(fields: [roomId], references: [id], onDelete: Cascade)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  parts     Part[]

  @@unique([roomId, name])
  @@index([roomId])
}

model Category {
  id          String      @id @default(uuid())
  name        String      @unique
  description String?
  createdAt   DateTime    @default(now())
  updatedAt   DateTime    @updatedAt
  partModels  PartModel[]
}

model Part {
  id                 String       @id @default(uuid())
  serialNumber       String       @unique
  partModelId        String
  partModel          PartModel    @relation(fields: [partModelId], references: [id], onDelete: Restrict)
  manufacturerId     String
  manufacturer       Manufacturer @relation(fields: [manufacturerId], references: [id], onDelete: Restrict)
  price              Float?
  state              String       @default("SPARE")
  binId              String?
  bin                Bin?         @relation(fields: [binId], references: [id], onDelete: SetNull)
  hostId             String?
  host               Host?        @relation(fields: [hostId], references: [id], onDelete: SetNull)
  custodianId        String?
  custodian          User?        @relation("Custody", fields: [custodianId], references: [id], onDelete: SetNull)
  notes              String?
  createdAt          DateTime     @default(now())
  updatedAt          DateTime     @updatedAt
  events             PartEvent[]
  tags               PartTag[]
  problemInFms       FmPart[]
  brokenRepairs      Repair[]     @relation("BrokenRepairs")
  replacementRepairs Repair[]     @relation("ReplacementRepairs")

  @@index([state])
  @@index([binId])
  @@index([manufacturerId])
  @@index([partModelId])
  @@index([hostId])
  @@index([custodianId])
}

model PartEvent {
  id        String   @id @default(uuid())
  partId    String
  part      Part     @relation(fields: [partId], references: [id], onDelete: Cascade)
  userId    String?
  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  type      String
  field     String?
  oldValue  String?
  newValue  String?
  createdAt DateTime @default(now())

  @@index([partId, createdAt(sort: Desc)])
  @@index([userId])
}

model Tag {
  id        String    @id @default(uuid())
  name      String    @unique
  color     String?
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt
  parts     PartTag[]
}

model PartTag {
  partId    String
  tagId     String
  part      Part     @relation(fields: [partId], references: [id], onDelete: Cascade)
  tag       Tag      @relation(fields: [tagId], references: [id], onDelete: Cascade)
  createdAt DateTime @default(now())

  @@id([partId, tagId])
  @@index([tagId])
}

model Host {
  id        String   @id @default(uuid())
  assetId   String   @unique
  name      String   @unique
  location  String?
  notes     String?
  state     String   @default("DEPLOYED")
  stack     String   @default("PRODUCTION")
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  parts     Part[]
  fms       Fm[]
  repairs   Repair[]
  events    HostEvent[]

  @@index([state])
  @@index([stack])
}

model HostEvent {
  id        String   @id @default(uuid())
  hostId    String
  host      Host     @relation(fields: [hostId], references: [id], onDelete: Cascade)
  userId    String?
  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  type      String
  field     String?
  oldValue  String?
  newValue  String?
  createdAt DateTime @default(now())

  @@index([hostId, createdAt(sort: Desc)])
  @@index([userId])
}

model Fm {
  id           String    @id @default(uuid())
  hostId       String
  host         Host      @relation(fields: [hostId], references: [id], onDelete: Restrict)
  status       String    @default("OPEN")
  problem      String
  openedAt     DateTime  @default(now())
  closedAt     DateTime?
  createdAt    DateTime  @default(now())
  updatedAt    DateTime  @updatedAt
  problemParts FmPart[]
  repairs      Repair[]

  @@index([status])
  @@index([hostId])
  @@index([status, openedAt(sort: Desc)])
  @@map("fms")
}

model FmPart {
  fmId      String
  partId    String
  fm        Fm       @relation(fields: [fmId], references: [id], onDelete: Cascade)
  part      Part     @relation(fields: [partId], references: [id], onDelete: Restrict)
  createdAt DateTime @default(now())

  @@id([fmId, partId])
  @@index([partId])
  @@map("fm_parts")
}

model Repair {
  id                String   @id @default(uuid())
  hostId            String
  host              Host     @relation(fields: [hostId], references: [id], onDelete: Restrict)
  brokenPartId      String
  brokenPart        Part     @relation("BrokenRepairs", fields: [brokenPartId], references: [id], onDelete: Restrict)
  replacementPartId String
  replacement       Part     @relation("ReplacementRepairs", fields: [replacementPartId], references: [id], onDelete: Restrict)
  performedById     String
  performedBy       User     @relation(fields: [performedById], references: [id], onDelete: Restrict)
  performedAt       DateTime @default(now())
  fmId              String?
  fm                Fm?      @relation(fields: [fmId], references: [id], onDelete: SetNull)
  createdAt         DateTime @default(now())
  updatedAt         DateTime @updatedAt

  @@index([hostId, performedAt(sort: Desc)])
  @@index([fmId])
  @@index([performedById, performedAt(sort: Desc)])
  @@index([brokenPartId])
  @@index([replacementPartId])
  @@map("repairs")
}

model WebhookSubscription {
  id        String   @id @default(uuid())
  url       String
  secret    String
  // JSON array of WebhookEventName values. Becomes String[] on Postgres cutover.
  events    String
  active    Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  @@index([active])
}

model SavedView {
  id         String   @id @default(uuid())
  userId     String
  user       User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  resource   String
  name       String
  // JSON blob describing filters/sort/columns. Becomes Jsonb on Postgres cutover.
  filterJson String
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  @@unique([userId, resource, name])
  @@index([userId])
}

model CsvImportJob {
  id         String    @id @default(uuid())
  userId     String?
  user       User?     @relation(fields: [userId], references: [id], onDelete: SetNull)
  resource   String
  status     String    @default("PENDING")
  filename   String
  stagedRows Int       @default(0)
  // JSON array of CsvImportRowError. Nullable until validation runs.
  errors     String?
  startedAt  DateTime?
  finishedAt DateTime?
  createdAt  DateTime  @default(now())
  updatedAt  DateTime  @updatedAt

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