import {z} from 'zod'

export type GetApiKnowledgeKnowledgeIdSourcesSourceIdFilesArgs = {knowledge_id: string, source_id: string, prefix?: (string | null) | undefined, limit?: number | undefined, page?: number | undefined, delimiter?: string | undefined, db_id?: (string | null) | undefined};

export type GetApiKnowledgeKnowledgeIdSourcesSourceIdFilesOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const sourceFolderSchema = z.object({prefix: z.string(), name: z.string(), is_empty: z.boolean().optional()});

export const sourceFileSchema = z.object({key: z.string(), name: z.string(), size: z.number().int().nullable().optional(), last_modified: z.string().nullable().optional(), content_type: z.string().nullable().optional()});

export const paginationInfo = z.object({page: z.number().int().gte(0).optional(), limit: z.number().int().gte(1).optional(), total_pages: z.number().int().gte(0).optional(), total_count: z.number().int().gte(0).optional(), search_time_ms: z.number().gte(0).optional()});

export const sourceFilesResponseSchema = z.object({source_id: z.string(), source_name: z.string(), prefix: z.string().nullable().optional(), folders: z.array(sourceFolderSchema).optional(), files: z.array(sourceFileSchema).optional(), meta: paginationInfo});

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
};

/**
 * List Files in Source
 * 
 * GET /knowledge/{knowledge_id}/sources/{source_id}/files
 */
export const getApiKnowledgeKnowledgeIdSourcesSourceIdFiles = async (args: GetApiKnowledgeKnowledgeIdSourcesSourceIdFilesArgs, options: GetApiKnowledgeKnowledgeIdSourcesSourceIdFilesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.prefix != null) query.append("prefix", String(args.prefix))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.page != null) query.append("page", String(args.page))
if (args.delimiter != null) query.append("delimiter", String(args.delimiter))
if (args.db_id != null) query.append("db_id", String(args.db_id))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/knowledge/${encodeURIComponent(String(args.knowledge_id))}/sources/${encodeURIComponent(String(args.source_id))}/files${query.size > 0 ? `?${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(sourceFilesResponseSchema, await res.json())
};