fix: context must be loaded on initialization

svelte 3.25 and later won't let you call getContext and setContext
outside of component initialization. This means you need to implement
components inside the Auth0Context that getContext on initialization
then pass them to functions

BREAKING CHANGE: function signature for login, logout, and refreshToken

src/App.svelte

@@ -4,6 +4,9 @@ import { json } from 'svelte-highlight/languages';
 import { arduinoLight as highlightTheme } from "svelte-highlight/styles";
 import {
   OidcContext,
+  LoginButton,
+  LogoutButton,
+  RefreshTokenButton,
   authError,
   idToken,
   accessToken,
@@ -27,10 +30,9 @@ import {
   redirect_uri="process.env.OIDC_REDIRECT_URI"
   post_logout_redirect_uri="process.env.OIDC_POST_LOGOUT_REDIRECT_URI"
 >
-
-  <button class="btn" on:click|preventDefault='{() => login() }'>Login</button>
-  <button class="btn" on:click|preventDefault='{() => logout() }'>Logout</button>
-  <button class="btn" on:click|preventDefault='{() => refreshToken() }'>refreshToken</button>
+  <LoginButton>Login</LoginButton>
+  <LogoutButton>Logout</LogoutButton>
+  <RefreshTokenButton>refreshToken</RefreshTokenButton>
   <table>
     <thead>
       <tr><th style="width: 20%;">store</th><th style="width: 80%;">value</th></tr>

src/components/LoginButton.svelte

@@ -0,0 +1,14 @@
+<script>
+    import {  getContext } from 'svelte';
+    import {
+        OIDC_CONTEXT_CLIENT_PROMISE,
+        OIDC_CONTEXT_REDIRECT_URI,
+        login,
+    } from './OidcContext.svelte';
+
+    const oidcPromise = getContext(OIDC_CONTEXT_CLIENT_PROMISE)
+    export let callback_url = getContext(OIDC_CONTEXT_REDIRECT_URI)
+    export let preserveRoute
+</script>
+
+<button class="btn" on:click|preventDefault='{() => login(oidcPromise, preserveRoute, callback_url) }'><slot></slot></button>

src/components/LogoutButton.svelte

@@ -0,0 +1,13 @@
+<script>
+    import {  getContext } from 'svelte';
+    import {
+        OIDC_CONTEXT_CLIENT_PROMISE,
+        OIDC_CONTEXT_POST_LOGOUT_REDIRECT_URI,
+        logout,
+    } from './OidcContext.svelte';
+
+    const oidcPromise = getContext(OIDC_CONTEXT_CLIENT_PROMISE)
+    export let logout_url = getContext(OIDC_CONTEXT_POST_LOGOUT_REDIRECT_URI)
+</script>
+
+<button class="btn" on:click|preventDefault='{() => logout(oidcPromise, logout_url) }'><slot></slot></button>

src/components/OidcContext.svelte

@@ -28,12 +28,14 @@
 
 	/**
 	 * Refresh the accessToken using the silentRenew method (hidden iframe)
+	 * 
+	 * @param {Promise<UserManager>} oidcPromise
 	 * @return bool indicated whether the token was refreshed, if false error will be set
 	 * in the authError store.
 	 */
-	export async function refreshToken() {
+	export async function refreshToken(oidcPromise) {
 		try {
-		  const oidc = await getContext(OIDC_CONTEXT_CLIENT_PROMISE);
+		  const oidc = await oidcPromise
 		  await oidc.signinSilent();
 		  return true;
 		}
@@ -47,12 +49,13 @@
 	/**
 	 * Initiate Register/Login flow.
 	 *
+	 * @param {Promise<UserManager>} oidcPromise
 	 * @param {boolean} preserveRoute - store current location so callback handler will navigate back to it.
 	 * @param {string} callback_url - explicit path to use for the callback.
 	 */
-	export async function login(preserveRoute = true, callback_url = null) {
-		const oidc = await getContext(OIDC_CONTEXT_CLIENT_PROMISE);
-		const redirect_uri = callback_url || getContext(OIDC_CONTEXT_REDIRECT_URI) || window.location.href;
+	export async function login(oidcPromise, preserveRoute = true, callback_url = null) {
+		const oidc = await oidcPromise;
+		const redirect_uri = callback_url || window.location.href;
 
 		// try to keep the user on the same page from which they triggered login. If set to false should typically
 		// cause redirect to /.
@@ -67,12 +70,13 @@
 
 	/**
 	 * Log out the current user.
-	 *
+	 * 
+	 * @param {Promise<UserManager>} oidcPromise
 	 * @param {string} logout_url - specify the url to return to after login.
 	 */
-	export async function logout(logout_url = null) {
-		const oidc = await getContext(OIDC_CONTEXT_CLIENT_PROMISE);
-		const returnTo = logout_url || getContext(OIDC_CONTEXT_POST_LOGOUT_REDIRECT_URI) ||	window.location.href;
+	export async function logout(oidcPromise, logout_url = null) {
+		const oidc = await oidcPromise;
+		const returnTo = logout_url || window.location.href;
 		oidc.signoutRedirect({ returnTo });
 	}
 </script>
@@ -120,9 +124,8 @@
     });
 
 
-    // userManager needs to be wrapped in a promise and the work
-    // needs to be done onMount to otherwise there is an
-    // Error: Function called outside component initialization
+    // does userManager needs to be wrapped in a promise? or is this a left over to maintain
+	// symmetry with the @dopry/svelte-auth0 auth0 implementation
 	let oidcPromise = Promise.resolve(userManager);
     setContext(OIDC_CONTEXT_CLIENT_PROMISE, oidcPromise);
 
@@ -132,7 +135,7 @@
 	// Use 'error' and 'code' to test if the component is being executed as a part of a login callback. If we're not
 	// running in a login callback, and the user isn't logged in, see if we can capture their existing session.
     if (!params.has('error') && !params.has('code') && !$isAuthenticated) {
-        refreshToken();
+        refreshToken(oidcPromise);
     }
 
 	async function handleOnMount() {
@@ -165,6 +168,7 @@
 		// what the uris loook like. I fear this may be problematic in other auth flows in the future.
 		else if (params.has('state')) {
 			const response = await oidc.signinCallback();
+			console.log('oidc.signinCallback::response', response)
 		}
 		isLoading.set(false);
 	}

src/components/RefreshTokenButton.svelte

@@ -0,0 +1,11 @@
+<script>
+    import {  getContext } from 'svelte';
+    import {
+        OIDC_CONTEXT_CLIENT_PROMISE,
+        refreshToken,
+    } from './OidcContext.svelte';
+
+    const oidcPromise = getContext(OIDC_CONTEXT_CLIENT_PROMISE)
+</script>
+
+<button class="btn" on:click|preventDefault='{() => refreshToken(oidcPromise) }'><slot></slot></button>

src/components/components.module.js

@@ -10,4 +10,7 @@ export {
     refreshToken,
     userInfo,
 } from './OidcContext.svelte';
+export { default as LoginButton} from './LoginButton.svelte'
+export { default as LogoutButton} from './LogoutButton.svelte'
+export { default as RefreshTokenButton} from './RefreshTokenButton.svelte'