// The port the archive module's use cases are written against: the platform's Archive service, in this
// module's own words. adapters/service.ts is the one place that knows `@conusai-sdk/archive` exists, and
// it turns every refusal into the kit's typed app error (`businessAppError`) before core sees it.

import { token } from "@conusai-kit/core"
import type { DocumentReceipt, DocumentView, RetentionClassView, VersionFacts, VersionView } from "../contract/index.js"

export interface Page<T> {
  readonly rows: T[]
  readonly after?: string
}

/** What a `read` procedure may ask the service: nothing that changes a row. */
export interface ArchiveReads {
  listDocuments(query: { q?: string; after?: string; limit: number }): Promise<Page<DocumentView>>
  getDocument(documentId: string): Promise<DocumentView>
  listVersions(documentId: string, query: { after?: string; limit: number }): Promise<Page<VersionView>>
  listRetentionClasses(query: { after?: string; limit: number }): Promise<Page<RetentionClassView>>
  listDisposalDue(query: { after?: string; limit: number }): Promise<Page<DocumentView>>
}

export interface ArchiveService extends ArchiveReads {
  registerDocument(input: {
    title: string
    kind?: string
    retentionClass: string
    version: VersionFacts
    key: string
  }): Promise<DocumentReceipt>
  addVersion(input: {
    documentId: string
    revision: string
    version: VersionFacts
    key: string
  }): Promise<DocumentReceipt>
  setLegalHold(input: {
    documentId: string
    revision: string
    legalHold: boolean
    key: string
  }): Promise<DocumentReceipt>
  disposeDocument(input: { documentId: string; revision: string; key: string }): Promise<DocumentReceipt>
  createRetentionClass(input: {
    code: string
    keepFor: string
    from: RetentionClassView["from"]
    key: string
  }): Promise<void>
}

/** The read view a `read` or `write` handler receives: the kind is a capability, not a label. */
export const archiveReadsOf = (service: ArchiveReads): ArchiveReads => ({
  listDocuments: (query) => service.listDocuments(query),
  getDocument: (documentId) => service.getDocument(documentId),
  listVersions: (documentId, query) => service.listVersions(documentId, query),
  listRetentionClasses: (query) => service.listRetentionClasses(query),
  listDisposalDue: (query) => service.listDisposalDue(query),
})

/**
 * Bound by a composition root or a test that brings its own client (another organization, the
 * business-services fake). With nothing bound, the module calls this deployment's service.
 */
export const ARCHIVE_SERVICE = token<ArchiveService>("archive.service", {
  views: { read: archiveReadsOf, write: archiveReadsOf },
})