import {z} from 'zod'

export type RESTScanAppPackage = {app_name: string, module_name: string, version: string, file_name: string};

export type RESTScanPackageReqData = {source: string, user: string, job: string, workspace: string, function: string, region: string, application_packages: Array<RESTScanAppPackage>};

export type CreateApiScanPackageArgs = {'X-Auth-Token': string, body: RESTScanPackageReqData};

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

export const rESTVulnerability = z.object({name: z.string(), score: z.number(), severity: z.string(), vectors: z.string(), description: z.string(), package_name: z.string(), package_version: z.string(), fixed_version: z.string(), link: z.string(), score_v3: z.number(), vectors_v3: z.string(), published_timestamp: z.number().int(), last_modified_timestamp: z.number().int(), cpes: z.array(z.string()).optional(), cves: z.array(z.string()).optional(), feed_rating: z.string(), in_base_image: z.boolean(), tags: z.array(z.string()).optional()});

export const rESTScanPkgReport = z.object({verdict: z.string(), message: z.string(), cvedb_version: z.string(), cvedb_create_time: z.string(), vulnerabilities: z.array(rESTVulnerability)});

export const rESTScanPkgReportData = z.object({report: rESTScanPkgReport});

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
};

/**
 * Request package scan
 * 
 * POST /scan/package
 */
export const createApiScanPackage = async (args: CreateApiScanPackageArgs, options: CreateApiScanPackageOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Auth-Token'] != null) headers.set("X-Auth-Token", String(args['X-Auth-Token']))

const url = `${baseUrl.replace(/\/+$/, '')}/scan/package${query.size > 0 ? `?${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(rESTScanPkgReportData, await res.json())
};