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fetch.ts
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fetch.ts
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import { API_VERSIONS, API_VERSION_HEADER_NAME } from './constants'
import { expiresAt, looksLikeFetchResponse, parseResponseAPIVersion } from './helpers'
import {
AuthResponse,
AuthResponsePassword,
SSOResponse,
GenerateLinkProperties,
GenerateLinkResponse,
User,
UserResponse,
} from './types'
import {
AuthApiError,
AuthRetryableFetchError,
AuthWeakPasswordError,
AuthUnknownError,
AuthSessionMissingError,
} from './errors'
export type Fetch = typeof fetch
export interface FetchOptions {
headers?: {
[key: string]: string
}
noResolveJson?: boolean
}
export interface FetchParameters {
signal?: AbortSignal
}
export type RequestMethodType = 'GET' | 'POST' | 'PUT' | 'DELETE'
const _getErrorMessage = (err: any): string =>
err.msg || err.message || err.error_description || err.error || JSON.stringify(err)
const NETWORK_ERROR_CODES = [502, 503, 504]
export async function handleError(error: unknown) {
if (!looksLikeFetchResponse(error)) {
throw new AuthRetryableFetchError(_getErrorMessage(error), 0)
}
if (NETWORK_ERROR_CODES.includes(error.status)) {
// status in 500...599 range - server had an error, request might be retryed.
throw new AuthRetryableFetchError(_getErrorMessage(error), error.status)
}
let data: any
try {
data = await error.json()
} catch (e: any) {
throw new AuthUnknownError(_getErrorMessage(e), e)
}
let errorCode: string | undefined = undefined
const responseAPIVersion = parseResponseAPIVersion(error)
if (
responseAPIVersion &&
responseAPIVersion.getTime() >= API_VERSIONS['2024-01-01'].timestamp &&
typeof data === 'object' &&
data &&
typeof data.code === 'string'
) {
errorCode = data.code
} else if (typeof data === 'object' && data && typeof data.error_code === 'string') {
errorCode = data.error_code
}
if (!errorCode) {
// Legacy support for weak password errors, when there were no error codes
if (
typeof data === 'object' &&
data &&
typeof data.weak_password === 'object' &&
data.weak_password &&
Array.isArray(data.weak_password.reasons) &&
data.weak_password.reasons.length &&
data.weak_password.reasons.reduce((a: boolean, i: any) => a && typeof i === 'string', true)
) {
throw new AuthWeakPasswordError(
_getErrorMessage(data),
error.status,
data.weak_password.reasons
)
}
} else if (errorCode === 'weak_password') {
throw new AuthWeakPasswordError(
_getErrorMessage(data),
error.status,
data.weak_password?.reasons || []
)
} else if (errorCode === 'session_not_found') {
// The `session_id` inside the JWT does not correspond to a row in the
// `sessions` table. This usually means the user has signed out, has been
// deleted, or their session has somehow been terminated.
throw new AuthSessionMissingError()
}
throw new AuthApiError(_getErrorMessage(data), error.status || 500, errorCode)
}
const _getRequestParams = (
method: RequestMethodType,
options?: FetchOptions,
parameters?: FetchParameters,
body?: object
) => {
const params: { [k: string]: any } = { method, headers: options?.headers || {} }
if (method === 'GET') {
return params
}
params.headers = { 'Content-Type': 'application/json;charset=UTF-8', ...options?.headers }
params.body = JSON.stringify(body)
return { ...params, ...parameters }
}
interface GotrueRequestOptions extends FetchOptions {
jwt?: string
redirectTo?: string
body?: object
query?: { [key: string]: string }
/**
* Function that transforms api response from gotrue into a desirable / standardised format
*/
xform?: (data: any) => any
}
export async function _request(
fetcher: Fetch,
method: RequestMethodType,
url: string,
options?: GotrueRequestOptions
) {
const headers = {
...options?.headers,
}
if (!headers[API_VERSION_HEADER_NAME]) {
headers[API_VERSION_HEADER_NAME] = API_VERSIONS['2024-01-01'].name
}
if (options?.jwt) {
headers['Authorization'] = `Bearer ${options.jwt}`
}
const qs = options?.query ?? {}
if (options?.redirectTo) {
qs['redirect_to'] = options.redirectTo
}
const queryString = Object.keys(qs).length ? '?' + new URLSearchParams(qs).toString() : ''
const data = await _handleRequest(
fetcher,
method,
url + queryString,
{
headers,
noResolveJson: options?.noResolveJson,
},
{},
options?.body
)
return options?.xform ? options?.xform(data) : { data: { ...data }, error: null }
}
async function _handleRequest(
fetcher: Fetch,
method: RequestMethodType,
url: string,
options?: FetchOptions,
parameters?: FetchParameters,
body?: object
): Promise<any> {
const requestParams = _getRequestParams(method, options, parameters, body)
let result: any
try {
result = await fetcher(url, {
...requestParams,
})
} catch (e) {
console.error(e)
// fetch failed, likely due to a network or CORS error
throw new AuthRetryableFetchError(_getErrorMessage(e), 0)
}
if (!result.ok) {
await handleError(result)
}
if (options?.noResolveJson) {
return result
}
try {
return await result.json()
} catch (e: any) {
await handleError(e)
}
}
export function _sessionResponse(data: any): AuthResponse {
let session = null
if (hasSession(data)) {
session = { ...data }
if (!data.expires_at) {
session.expires_at = expiresAt(data.expires_in)
}
}
const user: User = data.user ?? (data as User)
return { data: { session, user }, error: null }
}
export function _sessionResponsePassword(data: any): AuthResponsePassword {
const response = _sessionResponse(data) as AuthResponsePassword
if (
!response.error &&
data.weak_password &&
typeof data.weak_password === 'object' &&
Array.isArray(data.weak_password.reasons) &&
data.weak_password.reasons.length &&
data.weak_password.message &&
typeof data.weak_password.message === 'string' &&
data.weak_password.reasons.reduce((a: boolean, i: any) => a && typeof i === 'string', true)
) {
response.data.weak_password = data.weak_password
}
return response
}
export function _userResponse(data: any): UserResponse {
const user: User = data.user ?? (data as User)
return { data: { user }, error: null }
}
export function _ssoResponse(data: any): SSOResponse {
return { data, error: null }
}
export function _generateLinkResponse(data: any): GenerateLinkResponse {
const { action_link, email_otp, hashed_token, redirect_to, verification_type, ...rest } = data
const properties: GenerateLinkProperties = {
action_link,
email_otp,
hashed_token,
redirect_to,
verification_type,
}
const user: User = { ...rest }
return {
data: {
properties,
user,
},
error: null,
}
}
export function _noResolveJsonResponse(data: any): Response {
return data
}
/**
* hasSession checks if the response object contains a valid session
* @param data A response object
* @returns true if a session is in the response
*/
function hasSession(data: any): boolean {
return data.access_token && data.refresh_token && data.expires_in
}