import {z} from 'zod'

export type GetApiFilesArgs = {q: string, scope?: ('my-files' | 'shared-with-me' | 'organization') | undefined, project_id?: string | undefined};

export type GetApiFilesOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const searchedFile = z.object({id: z.string(), name: z.string(), size: z.number(), content_type: z.string(), status: z.enum(["extracting", "embedding", "ready", "failed"]), folder_id: z.string().nullable(), created_at: z.string()});

export const fileSearchResponse = z.object({files: z.array(searchedFile)});

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 files
 * 
 * GET /files
 */
export const getApiFiles = async (args: GetApiFilesArgs, options?: GetApiFilesOptions) => {
const {baseUrl = "https://app.gc.ai/api/external/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
if (args.scope != null) query.append("scope", String(args.scope))
if (args.project_id != null) query.append("project_id", String(args.project_id))
if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/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(fileSearchResponse, await res.json())
};