import {z} from 'zod'

export type GetApiApiV1AppAppIdEndpointEndpointIdOauthArgs = {app_id: string, endpoint_id: string};

export type GetApiApiV1AppAppIdEndpointEndpointIdOauthOptions = {baseUrl?: string | undefined, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const oauth2AuthMethodInOut = z.enum(["clientSecretJwt", "clientSecretBasic", "clientSecretPost"]);

export const oauth2GrantTypeInOut = z.enum(["clientCredentials", "refreshToken"]);

export const endpointOauthConfigOut = z.object({authMethod: oauth2AuthMethodInOut, clientId: z.string(), extraHeaders: z.record(z.string(), z.string()).nullable().optional(), extraParams: z.record(z.string(), z.string()).nullable().optional(), grantType: oauth2GrantTypeInOut, scopes: z.array(z.string()).nullable().optional(), tokenUrl: z.string()});

export const endpointOauthOut = z.object({config: endpointOauthConfigOut.optional(), enabled: z.boolean()});

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 Endpoint Oauth Config
 * 
 * GET /api/v1/app/{app_id}/endpoint/{endpoint_id}/oauth
 */
export const getApiApiV1AppAppIdEndpointEndpointIdOauth = async (args: GetApiApiV1AppAppIdEndpointEndpointIdOauthArgs, options?: GetApiApiV1AppAppIdEndpointEndpointIdOauthOptions) => {
const {baseUrl = "https://api.eu.svix.com", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/app/${encodeURIComponent(String(args.app_id))}/endpoint/${encodeURIComponent(String(args.endpoint_id))}/oauth${query.size > 0 ? `?${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(endpointOauthOut, await res.json())
};