import {z} from 'zod'

export type GetApiPoliciesPolicyIdArgs = {policyId: string};

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

export const policyStatus = z.enum(["OK", "NEEDS_REMEDIATION"]);

export const policyVersionStatus = z.enum(["NOT_STARTED", "DRAFT", "PENDING_APPROVAL", "APPROVED", "RENEW_SOON", "EXPIRED"]);

export const policyLatestVersion = z.object({status: policyVersionStatus});

export const policyLocale = z.enum(["CS", "CY", "DA", "DE", "EN", "ES", "FI", "FR", "HU", "IS", "IT", "JA", "KO", "NL", "NO", "NOT_SPECIFIED", "PL", "PT", "ET", "RO", "AR", "SK", "SV", "TR", "ZH"]);

export const policyDocument = z.object({language: policyLocale.nullable(), slugId: z.string(), url: z.string()});

export const policyLatestApprovedVersion = z.object({versionId: z.string(), documents: z.array(policyDocument)});

export const policy = z.object({id: z.string(), name: z.string(), description: z.string(), status: policyStatus, approvedAtDate: z.string().nullable(), latestVersion: policyLatestVersion, latestApprovedVersion: policyLatestApprovedVersion.nullable()});

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
};

/**
 * Get policy by ID
 * 
 * GET /policies/{policyId}
 */
export const getApiPoliciesPolicyId = async (args: GetApiPoliciesPolicyIdArgs, options?: GetApiPoliciesPolicyIdOptions) => {
const {baseUrl = "https://api.vanta.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/policies/${encodeURIComponent(String(args.policyId))}${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(policy, await res.json())
};