// The constants of the knowledge module: its feature flag, jobs, events, audit actions and the
// indexable content types.

/** The module flag: knowledge retrieval and indexing, off until an administrator enables document AI. */
export const KNOWLEDGE_FLAG = "knowledge.enabled"

export const KNOWLEDGE_FLAG_DEFAULTS = {
  [KNOWLEDGE_FLAG]: false,
} as const

/** The worker job that hands one document to the platform's knowledge service. */
export const INDEX_JOB = "knowledge.index"

/** The worker job that removes one document from the platform's knowledge service. */
export const REMOVE_JOB = "knowledge.remove"

export const COLLECTION_CREATED = "knowledge.collection.created"
export const DOCUMENT_INDEX_REQUESTED = "knowledge.document.index_requested"
export const DOCUMENT_REMOVE_REQUESTED = "knowledge.document.remove_requested"
export const DOCUMENT_AI_ENABLED = "knowledge.settings.document_ai_enabled"
export const DOCUMENT_AI_DISABLED = "knowledge.settings.document_ai_disabled"
/** A project's automatic PDF indexing switched on (naming a collection) or off. */
export const AUTO_INDEX_CHANGED = "knowledge.autoindex.changed"

/** The worker job that reads one uploaded PDF and indexes its passages into the project's opted-in collection. */
export const AUTO_INDEX_JOB = "knowledge.autoindex"

/** The files processor that enqueues it on every upload of a matching type; also its jobs' singleton namespace. */
export const AUTO_INDEX_PROCESSOR_KEY = "knowledge.autoindex"

/** What the automatic indexing reads, through the platform's document reader. */
export const AUTO_INDEX_CONTENT_TYPES = ["application/pdf"] as const

/** A PDF's ceiling for the reader: the files module's upload ceiling, as the documents module reads one. */
export const MAX_AUTO_INDEX_BYTES = 50 * 1024 * 1024

/**
 * What the indexer reads as text. PDFs and scans are the documents module's worked example; this
 * module indexes text-shaped files, and refuses anything else at the door with a named field.
 */
export const INDEXABLE_CONTENT_TYPES = ["text/plain", "text/markdown", "application/json", "text/csv"] as const

/** A search query's ceiling; a retrieval question is a sentence, not a document. */
export const MAX_QUERY_LENGTH = 500

/** What one search returns at most, however much the caller asks (the retrieval limit contract). */
export const MAX_SEARCH_RESULTS = 25

/** An indexed file's ceiling: one megabyte of text is already far past useful chunking. */
export const MAX_INDEX_BYTES = 1_048_576