import {z} from 'zod'

export type GetApiApiV1OauthAuthorizeArgs = {client_id: string, redirect_uri: string, response_type: string, code_challenge: string, code_challenge_method: string, state: string, scope?: (string | null) | undefined};

export type GetApiApiV1OauthAuthorizeOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const getApiApiV1OauthAuthorizeResponse = z.unknown();

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
};

/**
 * Authorize
 * 
 * GET /api/v1/oauth/authorize
 */
export const getApiApiV1OauthAuthorize = async (args: GetApiApiV1OauthAuthorizeArgs, options: GetApiApiV1OauthAuthorizeOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.client_id != null) query.append("client_id", String(args.client_id))
if (args.redirect_uri != null) query.append("redirect_uri", String(args.redirect_uri))
if (args.response_type != null) query.append("response_type", String(args.response_type))
if (args.code_challenge != null) query.append("code_challenge", String(args.code_challenge))
if (args.code_challenge_method != null) query.append("code_challenge_method", String(args.code_challenge_method))
if (args.state != null) query.append("state", String(args.state))
if (args.scope != null) query.append("scope", String(args.scope))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/oauth/authorize${query.size > 0 ? `?${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(getApiApiV1OauthAuthorizeResponse, await res.json())
};