import {z} from 'zod'

export type GetApiV1KnowledgeBaseKnowledgeBasesKbIdSourcesSourceIdPagesArgs = {kb_id: string, source_id: string, page_size?: number | undefined, start_cursor?: (string | null) | undefined};

export type GetApiV1KnowledgeBaseKnowledgeBasesKbIdSourcesSourceIdPagesOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const browsePageItem = z.object({provider_item_id: z.string().max(255), title: z.string().max(500), icon: z.record(z.string(), z.unknown()).nullable().optional(), url: z.string().max(1000).nullable().optional(), parent_type: z.string().max(50).nullable().optional(), parent_title: z.string().max(500).nullable().optional(), last_edited_time: z.string().nullable().optional()});

export const browseResponse = z.object({items: z.array(browsePageItem), next_cursor: z.string().nullable().optional(), has_more: z.boolean().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
};

/**
 * Browse Pages
 * 
 * GET /v1/knowledge-base/knowledge-bases/{kb_id}/sources/{source_id}/pages
 */
export const getApiV1KnowledgeBaseKnowledgeBasesKbIdSourcesSourceIdPages = async (args: GetApiV1KnowledgeBaseKnowledgeBasesKbIdSourcesSourceIdPagesArgs, options: GetApiV1KnowledgeBaseKnowledgeBasesKbIdSourcesSourceIdPagesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.page_size != null) query.append("page_size", String(args.page_size))
if (args.start_cursor != null) query.append("start_cursor", String(args.start_cursor))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/knowledge-base/knowledge-bases/${encodeURIComponent(String(args.kb_id))}/sources/${encodeURIComponent(String(args.source_id))}/pages${query.size > 0 ? `?${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(browseResponse, await res.json())
};