import {z} from 'zod'

export type CreateApiMatrixClientV3KeysQueryArgs = {body: {device_keys: Record<string, never>, timeout?: number | undefined}};

export type CreateApiMatrixClientV3KeysQueryOptions = {baseUrl?: string | undefined, accessTokenQuery?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiMatrixClientV3KeysQueryResponse = z.object({device_keys: z.object({}).optional(), failures: z.record(z.string(), z.object({})).optional(), master_keys: z.object({}).optional(), self_signing_keys: z.object({}).optional(), user_signing_keys: z.object({}).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
};

/**
 * Download device identity keys.
 * 
 * POST /_matrix/client/v3/keys/query
 * 
 * Also accepts auth: accessTokenBearer
 */
export const createApiMatrixClientV3KeysQuery = async (args: CreateApiMatrixClientV3KeysQueryArgs, options?: CreateApiMatrixClientV3KeysQueryOptions) => {
const {baseUrl = "https://matrix.org", fetch: fetchFn = fetch, accessTokenQuery} = options ?? {}

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

if (accessTokenQuery !== undefined) query.set("access_token", accessTokenQuery)

const url = `${baseUrl.replace(/\/+$/, '')}/_matrix/client/v3/keys/query${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

return validateResponse(createApiMatrixClientV3KeysQueryResponse, await res.json())
};