import {z} from 'zod'

export type GenerateCertificate = {certificate?: ({algorithm: string, cn: string, o?: string | undefined, ou?: string | undefined, c?: string | undefined, st?: string | undefined, l?: string | undefined, email_address?: string | undefined}) | undefined};

export type CreateApiCertificatesGenerateArgs = {body: GenerateCertificate};

export type CreateApiCertificatesGenerateOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const generateCertificateResponse = z.object({certificate: z.object({algorithm: z.string().optional(), cn: z.string().optional(), o: z.string().optional(), ou: z.string().optional(), c: z.string().optional(), st: z.string().optional(), l: z.string().optional(), email_address: z.string().optional(), public_key: z.string().optional(), public_key_hash: z.string().optional(), csr: z.string().optional(), pem: z.string().optional()}).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
};

/**
 * Generate a certificate
 * 
 * POST /certificates/generate
 */
export const createApiCertificatesGenerate = async (args: CreateApiCertificatesGenerateArgs, options?: CreateApiCertificatesGenerateOptions) => {
const {baseUrl = "https://core.spreedly.com/v1", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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