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evernote.ts inside a folder called integrations.evernote.ts file. This code defines a simple Evernote client with methods for starting the OAuth flow, exchanging tokens, and retrieving user notes.
// integrations/evernote.ts
export class EvernoteClient {
private apiKey: string;
private apiSecret: string;
private redirectUri: string;
constructor(apiKey: string, apiSecret: string, redirectUri: string) {
this.apiKey = apiKey;
this.apiSecret = apiSecret;
this.redirectUri = redirectUri;
}
// Returns the URL that the user should visit to authorize the app with Evernote.
public getRequestTokenUrl(): string {
const baseUrl = 'https://www.evernote.com/oauth';
const params = new URLSearchParams({
oauthconsumerkey: this.apiKey,
oauth_callback: this.redirectUri
// Add other necessary parameters if required by Evernote API.
});
return ${baseUrl}?${params.toString()};
}
// Exchanges the OAuth verifier for an access token.
public async fetchAccessToken(oauthVerifier: string, oauthToken: string): Promise {
// This example uses a POST request. In production, you typically handle this exchange on a secure backend.
const accessTokenEndpoint = 'https://www.evernote.com/oauth';
const response = await fetch(accessTokenEndpoint, {
method: 'POST',
body: new URLSearchParams({
oauthconsumerkey: this.apiKey,
oauth_token: oauthToken,
oauth_verifier: oauthVerifier
})
});
if (!response.ok) {
throw new Error('Failed to fetch access token');
}
const text = await response.text();
// Parse the response to extract the access token.
const params = new URLSearchParams(text);
const accessToken = params.get('oauth_token');
if (!accessToken) {
throw new Error('Access token not found in response');
}
return accessToken;
}
// Uses the access token to retrieve the user's notes from Evernote.
public async getUserNotes(accessToken: string): Promise {
const apiUrl = 'https://api.evernote.com/notes';
const response = await fetch(apiUrl, {
method: 'GET',
headers: {
'Authorization': Bearer ${accessToken}
}
});
if (!response.ok) {
throw new Error('Failed to fetch notes');
}
return await response.json();
}
}
main.ts or another related file.YOURAPIKEY, YOURAPISECRET, and YOURREDIRECTURL with your actual credentials.
// main.ts (or where you manage integrations)
import { EvernoteClient } from './integrations/evernote';
// Initialize the Evernote client with your credentials.
const evernoteClient = new EvernoteClient('YOURAPIKEY', 'YOURAPISECRET', 'YOURREDIRECTURL');
// Function to start the OAuth authentication process with Evernote.
export function startEvernoteOAuth(): void {
const authUrl = evernoteClient.getRequestTokenUrl();
// Redirect the user to Evernote's authentication page.
window.location.href = authUrl;
}
// Example function to handle the OAuth callback.
// In a real scenario, after successful authentication, Evernote will redirect back to your redirectUri with parameters.
export async function handleEvernoteCallback(oauthVerifier: string, oauthToken: string): Promise {
try {
const accessToken = await evernoteClient.fetchAccessToken(oauthVerifier, oauthToken);
// Once you have the access token, you can fetch user notes.
const notes = await evernoteClient.getUserNotes(accessToken);
console.log('User Notes:', notes);
// Integrate the notes into your application as needed.
} catch (error) {
console.error('Error during Evernote integration:', error);
}
}
startEvernoteOAuth function. For example, if you have an event handler in your UI code for the button click, add the function call there.handleEvernoteCallback with the parameters provided in the URL query string.
// Example: UI integration code snippet (e.g., in an event handler file)
import { startEvernoteOAuth, handleEvernoteCallback } from './main';
// On a button click, start the Evernote OAuth flow.
const connectEvernoteButton = document.getElementById('connectEvernote');
if (connectEvernoteButton) {
connectEvernoteButton.addEventListener('click', () => {
startEvernoteOAuth();
});
}
// Example: Handling the OAuth callback when the page loads.
// This assumes your redirect URL points to a page where you run this code.
window.addEventListener('load', () => {
const params = new URLSearchParams(window.location.search);
const oauthVerifier = params.get('oauth_verifier');
const oauthToken = params.get('oauth_token');
if (oauthVerifier && oauthToken) {
handleEvernoteCallback(oauthVerifier, oauthToken);
}
});
fetch and URLSearchParams are used, so no additional installations are required.
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