// IIOS Interaction Kernel — P1 schema (native portal only).
// Lifted from the Bottom-Up Evolution Atlas §10 kernel DDL. ONLY kernel tables:
// no support / inbox / route / AI tables (those are earned in later phases).

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

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

// ─── Enums (one value per line) ───────────────────────────────────
enum IiosActorKind {
  HUMAN
  AI
  SERVICE
  BOT
  UNKNOWN
}

enum IiosHandleKind {
  PORTAL_USER
  EMAIL
  PHONE
  WHATSAPP
  SLACK
  MATTERMOST
  TELEGRAM
  EXTERNAL_VISITOR
}

enum IiosInteractionKind {
  MESSAGE
  EMAIL
  SYSTEM_NOTICE
  INBOX_WORK
  SUPPORT_CASE
  MEETING_REQUEST
  DIGEST
  SUMMARY
  NOTIFICATION
}

enum IiosMessagePartKind {
  TEXT
  HTML
  MARKDOWN
  MEDIA_REF
  FILE_REF
  VOICE_REF
  LOCATION
  STRUCTURED_JSON
}

enum IiosDeliveryState {
  RECEIVED
  NORMALIZED
  POLICY_HELD
  STORED
  DELIVERED
  READ
  FAILED
  DELETED_LOCAL
  REDACTED
}

// ─── Kernel tables ────────────────────────────────────────────────

/// Frozen six-vector scope. orgId + appId are REQUIRED (no global-by-null).
model IiosScope {
  id          String   @id @default(cuid())
  orgId       String
  appId       String
  buId        String?
  tenantId    String?
  workspaceId String?
  projectId   String?
  userScopeId String?
  createdAt   DateTime @default(now())

  sourceHandles IiosSourceHandle[]
  channels      IiosChannel[]
  threads       IiosThread[]
  interactions  IiosInteraction[]

  @@index([orgId, appId, tenantId])
}

/// A channel-specific handle (phone/email/portal user). NOT identity — stays
/// UNVERIFIED until MDM resolves it; no silent merge.
model IiosSourceHandle {
  id                String         @id @default(cuid())
  scopeId           String
  scope             IiosScope      @relation(fields: [scopeId], references: [id], onDelete: Cascade)
  kind              IiosHandleKind
  externalId        String
  displayName       String?
  canonicalEntityId String? // set only when MDM resolves; null = unresolved
  confidence        Float          @default(0)
  verificationState String         @default("UNVERIFIED")
  firstSeenAt       DateTime       @default(now())
  lastSeenAt        DateTime       @default(now())
  metadata          Json?

  actors IiosActorRef[]

  @@unique([scopeId, kind, externalId])
  @@index([canonicalEntityId])
}

/// The local actor (human / AI / service / unknown) behind an interaction.
model IiosActorRef {
  id                  String           @id @default(cuid())
  kind                IiosActorKind
  sourceHandleId      String?
  sourceHandle        IiosSourceHandle? @relation(fields: [sourceHandleId], references: [id])
  platformPrincipalRef String?
  canonicalEntityId   String?
  displayName         String?
  createdAt           DateTime         @default(now())

  threadsCreated     IiosThread[]            @relation("ThreadCreatedBy")
  participations     IiosThreadParticipant[]
  interactions       IiosInteraction[]
}

/// A configured channel surface (PORTAL in P1).
model IiosChannel {
  id                 String   @id @default(cuid())
  scopeId            String
  scope              IiosScope @relation(fields: [scopeId], references: [id], onDelete: Cascade)
  channelType        String
  channelName        String
  direction          String   @default("BOTH")
  capabilityContract Json?
  externalRef        String?
  enabled            Boolean  @default(true)
  createdAt          DateTime @default(now())

  threads      IiosThread[]
  interactions IiosInteraction[]

  @@index([scopeId, channelType])
}

/// A conversation/thread on a channel.
model IiosThread {
  id               String    @id @default(cuid())
  scopeId          String
  scope            IiosScope @relation(fields: [scopeId], references: [id], onDelete: Cascade)
  channelId        String?
  channel          IiosChannel? @relation(fields: [channelId], references: [id])
  threadKind       String    @default("CONVERSATION")
  subject          String?
  externalThreadRef String?
  status           String    @default("OPEN")
  visibilityClass  String    @default("PRIVATE")
  createdByActorId String?
  createdByActor   IiosActorRef? @relation("ThreadCreatedBy", fields: [createdByActorId], references: [id])
  createdAt        DateTime  @default(now())
  updatedAt        DateTime  @updatedAt
  metadata         Json?

  participants IiosThreadParticipant[]
  interactions IiosInteraction[]

  @@index([scopeId, status])
}

model IiosThreadParticipant {
  threadId        String
  thread          IiosThread   @relation(fields: [threadId], references: [id], onDelete: Cascade)
  actorId         String
  actor           IiosActorRef @relation(fields: [actorId], references: [id])
  participantRole String       @default("MEMBER")
  joinedAt        DateTime     @default(now())
  leftAt          DateTime?

  @@id([threadId, actorId])
}

/// The semantic envelope. Idempotent per (scope, idempotencyKey).
model IiosInteraction {
  id                  String              @id @default(cuid())
  scopeId             String
  scope               IiosScope           @relation(fields: [scopeId], references: [id], onDelete: Cascade)
  kind                IiosInteractionKind
  threadId            String?
  thread              IiosThread?         @relation(fields: [threadId], references: [id])
  channelId           String?
  channel             IiosChannel?        @relation(fields: [channelId], references: [id])
  actorId             String?
  actor               IiosActorRef?       @relation(fields: [actorId], references: [id])
  parentInteractionId String?
  parent              IiosInteraction?    @relation("InteractionParent", fields: [parentInteractionId], references: [id])
  children            IiosInteraction[]   @relation("InteractionParent")
  externalId          String?
  idempotencyKey      String
  occurredAt          DateTime            @default(now())
  receivedAt          DateTime            @default(now())
  status              IiosDeliveryState   @default(RECEIVED)
  policyDecisionRef   String?
  consentReceiptRef   String?
  crreBundleRef       String?
  traceId             String?
  metadata            Json?

  parts IiosMessagePart[]

  @@unique([scopeId, idempotencyKey])
  @@index([threadId, occurredAt])
}

model IiosMessagePart {
  id             String              @id @default(cuid())
  interactionId  String
  interaction    IiosInteraction     @relation(fields: [interactionId], references: [id], onDelete: Cascade)
  partIndex      Int
  kind           IiosMessagePartKind
  bodyText       String?
  contentRef     String?
  mimeType       String?
  sizeBytes      BigInt?
  checksumSha256 String?
  metadata       Json?

  @@unique([interactionId, partIndex])
}

/// Transactional outbox — written in the same tx as the business row.
model IiosOutboxEvent {
  eventId       String    @id @default(cuid())
  aggregateType String
  aggregateId   String
  eventType     String
  cloudEvent    Json
  partitionKey  String
  status        String    @default("PENDING")
  attempts      Int       @default(0)
  nextAttemptAt DateTime  @default(now())
  createdAt     DateTime  @default(now())
  publishedAt   DateTime?

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

/// Idempotent-consumer ledger for the outbox relay / downstream consumers.
model IiosProcessedEvent {
  consumerName String
  eventId      String
  processedAt  DateTime @default(now())
  resultHash   String?

  @@id([consumerName, eventId])
}