// The statuses a knowledge document moves through. `unavailable` and `disabled` are not rows: they
// are the module's and the service's answers, and the UI maps all eight states from what a page
// reads (the module flag, the service readiness, the document row).

export const DOCUMENT_STATUSES = ["queued", "indexing", "indexed", "failed", "cancelled"] as const
export type DocumentStatus = (typeof DOCUMENT_STATUSES)[number]

/** The search backend a deployment binds: the platform's managed service, and no other (ADR-061). */
export const KNOWLEDGE_BACKENDS = ["platform"] as const
export type KnowledgeBackend = (typeof KNOWLEDGE_BACKENDS)[number]

/** The readiness states the search port answers (the managed toolset's readiness + unavailable). */
export const SERVICE_STATES = ["registered", "indexing", "ready", "degraded", "disabled", "unavailable"] as const
export type ServiceState = (typeof SERVICE_STATES)[number]

/** The enablement flow's typed refusal reasons, surfaced in the UI as states. */
export const ENABLEMENT_REASONS = ["plan_required", "feature_disabled", "quota_exhausted"] as const
export type EnablementReason = (typeof ENABLEMENT_REASONS)[number]

/**
 * Why the platform's knowledge service will not serve this deployment, as the pages show it. The service's
 * reason codes reach the module as these (adapters/refusals.ts): `scope_missing` is the service refusing
 * the deployment's token, whose `conusai.json` asks for `knowledge.collections:use`.
 */
export const KNOWLEDGE_REFUSALS = [
  "plan_required",
  "feature_disabled",
  "quota_exhausted",
  "budget_exhausted",
  "scope_missing",
  "indexing",
  "approval_required",
  "runtime_unavailable",
  "configuration_missing",
] as const
export type KnowledgeRefusal = (typeof KNOWLEDGE_REFUSALS)[number]

/** The indexing failure codes a document row records: the file's own, and a refusal waiting cannot fix. */
export const INDEX_FAILURES = [
  "processing_exhausted",
  "configuration_missing",
  "not_indexable",
  "too_large",
  "not_text",
  "file_changed",
  "plan_required",
  "feature_disabled",
  "quota_exhausted",
  "budget_exhausted",
  "scope_missing",
  "approval_required",
] as const
export type IndexFailure = (typeof INDEX_FAILURES)[number]