import {z} from 'zod'

export type RESTAdmRuleCriterion = {name: string, op: string, value: string, sub_criteria?: Array<RESTAdmRuleCriterion> | undefined};

export type RESTAdmissionRuleConfig = {id: number, category: string, comment?: string | undefined, criteria?: Array<RESTAdmRuleCriterion> | undefined, disable?: boolean | undefined, actions?: Array<string> | undefined, cfg_type: string, rule_type: string};

export type RESTAdmissionRuleConfigData = {config: RESTAdmissionRuleConfig};

export type CreateApiAssessAdmissionRuleArgs = {'X-Auth-Token': string, body: RESTAdmissionRuleConfigData};

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

export const rESTAdmCtrlRulesTestResult = z.object({index: z.number().int(), name: z.string(), kind: z.string(), message: z.string(), allowed: z.boolean()});

export const rESTAdmCtrlRulesTestResults = z.object({props_unavailable: z.array(z.string()).optional(), results: z.array(rESTAdmCtrlRulesTestResult).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
};

/**
 * Test admission control rules
 * 
 * POST /assess/admission/rule
 */
export const createApiAssessAdmissionRule = async (args: CreateApiAssessAdmissionRuleArgs, options: CreateApiAssessAdmissionRuleOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/assess/admission/rule${query.size > 0 ? `?${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(rESTAdmCtrlRulesTestResults, await res.json())
};