feat: logout callback with 'take me to I was' functionality

src/index.ts

@@ -14,7 +14,12 @@ export type OidcIntegrationOptions = {
   issuer: EnvString;
   clientId: EnvString;
   scopes?: string; // default "openid email profile"
-  routes?: { login?: string; callback?: string; logout?: string }; // defaults: /login, /oidc/callback, /logout
+  routes?: {
+    login?: string;
+    callback?: string;
+    logout?: string;
+    logoutCallback?: string;
+  }; // defaults: /login, /oidc/callback, /logout, /logout/callback
   redirectUri?: { mode: "infer-from-request" } | { absolute: string };
   cookie: {
     name?: string;
@@ -34,7 +39,7 @@ export type OidcInjectedOptions = {
   clientIdEnv: string;
   clientIdFallback?: string;
   scopes: string;
-  routes: { login: string; callback: string; logout: string };
+  routes: { login: string; callback: string; logout: string; logoutCallback: string };
   redirectUri: { mode: "infer-from-request" } | { absolute: string };
   cookie: {
     name: string;
@@ -59,6 +64,8 @@ function resolveOptions(user: OidcIntegrationOptions): OidcInjectedOptions {
     login: user.routes?.login ?? "/login",
     callback: user.routes?.callback ?? "/oidc/callback",
     logout: user.routes?.logout ?? "/logout",
+    logoutCallback:
+      user.routes?.logoutCallback ?? `${user.routes?.logout ?? "/logout"}/callback`,
   };
   const cookie = {
     name: user.cookie?.name ?? "oidc_session",
@@ -126,6 +133,10 @@ export default function resuelyOidc(
           pattern: resolved.routes.logout,
           entrypoint: fileURLToPath(new URL("./routes/logout.js", import.meta.url)),
         });
+        injectRoute({
+          pattern: resolved.routes.logoutCallback,
+          entrypoint: fileURLToPath(new URL("./routes/logout.js", import.meta.url)),
+        });
       },
     },
   };