Support for OAuth 2.0 (#5)

plugins/auth-oauth2/src/store.ts

@@ -0,0 +1,42 @@
+import { Context } from '@yaakapp/api';
+
+export async function storeToken(ctx: Context, contextId: string, response: AccessTokenRawResponse) {
+  if (!response.access_token) {
+    throw new Error(`Token not found in response`);
+  }
+
+  const expiresAt = response.expires_in ? Date.now() + response.expires_in * 1000 : null;
+  const token: AccessToken = {
+    response,
+    expiresAt,
+  };
+  await ctx.store.set<AccessToken>(tokenStoreKey(contextId), token);
+  return token;
+}
+
+export async function getToken(ctx: Context, contextId: string) {
+  return ctx.store.get<AccessToken>(tokenStoreKey(contextId));
+}
+
+export async function deleteToken(ctx: Context, contextId: string) {
+  return ctx.store.delete(tokenStoreKey(contextId));
+}
+
+function tokenStoreKey(context_id: string) {
+  return ['token', context_id].join('::');
+}
+
+export interface AccessToken {
+  response: AccessTokenRawResponse,
+  expiresAt: number | null;
+}
+
+export interface AccessTokenRawResponse {
+  access_token: string;
+  token_type?: string;
+  expires_in?: number;
+  refresh_token?: string;
+  error?: string;
+  error_description?: string;
+  scope?: string;
+}