import {z} from 'zod'

export type GetApiTyposquatDetailsArgs = {domain: string};

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

export const typosquatDNSBlocklist = z.object({activity: z.string().optional(), name: z.string().optional()});

export const typosquatHostnameDNSBlocklists = z.object({dns_blocklists: z.array(typosquatDNSBlocklist).optional(), hostname: z.string().optional()});

export const permutationType = z.string();

export const typosquatPermutationDetail = z.object({a_records: z.array(z.string()).optional(), country: z.string().optional(), date_detected: z.string().optional(), hostname: z.string().optional(), hostname_dns_blocklists: z.array(typosquatHostnameDNSBlocklists).optional(), mx_records: z.array(z.string()).optional(), ns_records: z.array(z.string()).optional(), permutation_type: permutationType.optional()});

export const getTyposquatDetailsResponsePayloadBody = z.object({ignored: z.array(typosquatPermutationDetail).optional(), registered: z.array(typosquatPermutationDetail).optional(), unregistered: z.array(typosquatPermutationDetail).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
};

/**
 * Retrieve typosquat details for a domain.
 * 
 * GET /typosquat/details
 */
export const getApiTyposquatDetails = async (args: GetApiTyposquatDetailsArgs, options?: GetApiTyposquatDetailsOptions) => {
const {baseUrl = "https://cyber-risk.upguard.com/api/public", fetch: fetchFn = fetch, APIKeyInHeader} = options ?? {}

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

if (args.domain != null) query.append("domain", String(args.domain))
if (APIKeyInHeader !== undefined) headers.set("Authorization", APIKeyInHeader)

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