import {z} from 'zod'

export type CreateApiProfilesProfileIdTestProxyArgs = {profileId: string};

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

export const proxyTestResultStatus = z.enum(["success", "partial_success", "failure"]);

export const proxyValidationStep = z.enum(["ssh_connection", "direct_ping", "direct_https", "proxy_ipv4", "proxy_ipv6", "proxy_website", "proxy_location"]);

export const proxyTestStepResponse = z.object({step: proxyValidationStep, name: z.string(), successful: z.boolean(), comment: z.string().nullable().optional()});

export const testProxyResponse = z.object({result: proxyTestResultStatus, steps: z.array(proxyTestStepResponse)});

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
};

/**
 * Tests the proxy connection configured on the given profile and returns every individual test step together with an overall summary. The
 * summary is 'success' when every step passes, 'partial_success' when the website could be reached through at least one of IPv4, IPv6 or DNS
 * name and the IP location lookup also succeeded, otherwise 'failure'.
 * 
 * POST /profiles/{profileId}/test-proxy
 */
export const createApiProfilesProfileIdTestProxy = async (args: CreateApiProfilesProfileIdTestProxyArgs, options?: CreateApiProfilesProfileIdTestProxyOptions) => {
const {baseUrl = "http://localhost:5050", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/profiles/${encodeURIComponent(String(args.profileId))}/test-proxy${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers})

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

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