import {z} from 'zod'

export type GetApiAiKnowledgeCollectionsSlugDocumentsArgs = {slug: string, query?: string | undefined, top_k?: number | undefined, sources?: string | undefined, retrieval_type?: ('vector' | 'hybrid' | 'keyword') | undefined, filter?: {[key: string]: unknown} | undefined, 'page[number]'?: number | undefined, 'page[size]'?: number | undefined};

export type GetApiAiKnowledgeCollectionsSlugDocumentsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const collectionDocumentRecord = z.object({id: z.string().optional(), record_id: z.string().optional(), record_type: z.string().optional(), chunk_index: z.number().int().optional(), chunk_total: z.number().int().optional(), text: z.string().optional(), score: z.number().optional(), region: z.string().optional(), user_id: z.string().optional(), organization_id: z.string().optional(), record_created_at: z.string().optional(), ingested_at: z.string().optional(), metadata: z.record(z.string(), z.unknown()).optional()});

export const collectionSearchMeta = z.object({collection_slug: z.string().optional(), searched_sources: z.array(z.string()).optional(), retrieval_type: z.string().optional(), top_k: z.number().int().optional(), total_results: z.number().int().optional(), total_pages: z.number().int().optional(), page_number: z.number().int().optional(), page_size: z.number().int().optional()});

export const collectionSearchResponse = z.object({data: z.array(collectionDocumentRecord).optional(), meta: collectionSearchMeta.optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Search collection documents
 * 
 * GET /ai/knowledge/collections/{slug}/documents
 */
export const getApiAiKnowledgeCollectionsSlugDocuments = async (args: GetApiAiKnowledgeCollectionsSlugDocumentsArgs, options?: GetApiAiKnowledgeCollectionsSlugDocumentsOptions) => {
const {baseUrl = "https://api.telnyx.com/v2", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.query != null) query.append("query", String(args.query))
if (args.top_k != null) query.append("top_k", String(args.top_k))
if (args.sources != null) query.append("sources", String(args.sources))
if (args.retrieval_type != null) query.append("retrieval_type", String(args.retrieval_type))
if (args.filter != null) query.append("filter", JSON.stringify(args.filter))
if (args['page[number]'] != null) query.append("page[number]", String(args['page[number]']))
if (args['page[size]'] != null) query.append("page[size]", String(args['page[size]']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/ai/knowledge/collections/${encodeURIComponent(String(args.slug))}/documents${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(collectionSearchResponse, await res.json())
};