First stage of the new flow

This commit is contained in:
Roman Krček
2025-07-02 21:50:45 +02:00
parent 5fd647d894
commit 822f1a7342
15 changed files with 1317 additions and 140 deletions

80
src/lib/gmail.ts Normal file
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import { google } from 'googleapis';
import quotedPrintable from 'quoted-printable';
import { getAuthenticatedClient } from './google-server.js';
export function createEmailTemplate(text: string): string {
return `<!DOCTYPE html>
<html lang="en">
<head>
<style>
@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');
</style>
</head>
<body style="font-family: 'Lato', sans-serif; background-color: #f9f9f9; padding: 20px; margin: 0;">
<div style="max-width: 600px; margin: auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
<p style="white-space: pre-line;font-size: 16px; line-height: 1.5; color: #333;">${text}</p>
<img src="cid:qrCode1" alt="QR Code" style="display: block; margin: 20px auto; max-width: 50%; min-width: 200px; height: auto;" />
<div style="width: 100%; display: flex; flex-direction: row; justify-content: space-between">
<div style="height: 4px; width: 20%; background: #00aeef;"></div>
<div style="height: 4px; width: 20%; background: #ec008c;"></div>
<div style="height: 4px; width: 20%; background: #7ac143;"></div>
<div style="height: 4px; width: 20%; background: #f47b20;"></div>
<div style="height: 4px; width: 20%; background: #2e3192;"></div>
</div>
<div style="font-size: 12px; color: #999; padding-top: 0px; margin-top: 10px; line-height: 1.5; ">
<p>This email has been generated with the help of ScanWave</p>
</div>
</div>
</body>
</html>`;
}
export async function sendGmail(
refreshToken: string,
{ to, subject, text, qr_code }: { to: string; subject: string; text: string; qr_code: string }
) {
const oauth = getAuthenticatedClient(refreshToken);
const gmail = google.gmail({ version: 'v1', auth: oauth });
const message_html = createEmailTemplate(text);
const boundary = 'BOUNDARY';
const nl = '\r\n';
// Convert HTML to a Buffer, then to latin1 string for quotedPrintable.encode
const htmlBuffer = Buffer.from(message_html, 'utf8');
const htmlLatin1 = htmlBuffer.toString('latin1');
const htmlQP = quotedPrintable.encode(htmlLatin1);
const qrLines = qr_code.replace(/.{1,76}/g, '$&' + nl);
const rawParts = [
'MIME-Version: 1.0',
`To: ${to}`,
`Subject: ${subject}`,
`Content-Type: multipart/related; boundary="${boundary}"`,
'',
`--${boundary}`,
'Content-Type: text/html; charset="UTF-8"',
'Content-Transfer-Encoding: quoted-printable',
'',
htmlQP,
'',
`--${boundary}`,
'Content-Type: image/png',
'Content-Transfer-Encoding: base64',
'Content-ID: <qrCode1>',
'Content-Disposition: inline; filename="qr.png"',
'',
qrLines,
'',
`--${boundary}--`,
''
];
const rawMessage = rawParts.join(nl);
const raw = Buffer.from(rawMessage).toString('base64url');
await gmail.users.messages.send({
userId: 'me',
requestBody: { raw }
});
}

38
src/lib/google-server.ts Normal file
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import { google } from 'googleapis';
import { env } from '$env/dynamic/private';
export const scopes = [
'https://www.googleapis.com/auth/gmail.send',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/drive.readonly',
'https://www.googleapis.com/auth/spreadsheets.readonly'
];
export function getOAuthClient() {
return new google.auth.OAuth2(
env.GOOGLE_CLIENT_ID,
env.GOOGLE_CLIENT_SECRET,
env.GOOGLE_REDIRECT_URI
);
}
export function createAuthUrl() {
return getOAuthClient().generateAuthUrl({
access_type: 'offline',
prompt: 'consent',
scope: scopes,
redirect_uri: env.GOOGLE_REDIRECT_URI
});
}
export async function exchangeCodeForTokens(code: string) {
const { tokens } = await getOAuthClient().getToken(code);
if (!tokens.refresh_token) throw new Error('No refresh_token returned');
return tokens.refresh_token;
}
export function getAuthenticatedClient(refreshToken: string) {
const oauth = getOAuthClient();
oauth.setCredentials({ refresh_token: refreshToken });
return oauth;
}

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import { google } from 'googleapis';
import { env } from '$env/dynamic/private';
import quotedPrintable from 'quoted-printable'; // tiny, zero-dep package
import { browser } from '$app/environment';
// Client-side only functions
export const scopes = [
'https://www.googleapis.com/auth/gmail.send',
'https://www.googleapis.com/auth/userinfo.email'
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/drive.readonly',
'https://www.googleapis.com/auth/spreadsheets.readonly'
];
export function getOAuthClient() {
return new google.auth.OAuth2(
env.GOOGLE_CLIENT_ID,
env.GOOGLE_CLIENT_SECRET,
env.GOOGLE_REDIRECT_URI
);
// Client-side functions for browser environment
export async function initGoogleAuth(): Promise<void> {
if (!browser) return;
// Google Auth initialization is handled by the OAuth flow
// No initialization needed for our server-side approach
}
export function createAuthUrl() {
return getOAuthClient().generateAuthUrl({
access_type: 'offline',
prompt: 'consent',
scope: scopes
});
export function getAuthUrl(): string {
if (!browser) return '';
// This should be obtained from the server
return '/auth/google';
}
export async function exchangeCodeForTokens(code: string) {
const { tokens } = await getOAuthClient().getToken(code);
if (!tokens.refresh_token) throw new Error('No refresh_token returned');
return tokens.refresh_token;
export async function isTokenValid(accessToken: string): Promise<boolean> {
if (!browser) return false;
try {
const response = await fetch(`https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=${accessToken}`);
const data = await response.json();
if (response.ok && data.expires_in && data.expires_in > 0) {
return true;
}
return false;
} catch (error) {
console.error('Error validating token:', error);
return false;
}
}
export async function sendGmail(
refreshToken: string,
{ to, subject, text, qr_code }: { to: string; subject: string; text: string; qr_code: string }
) {
const oauth = getOAuthClient();
oauth.setCredentials({ refresh_token: refreshToken });
const gmail = google.gmail({ version: 'v1', auth: oauth });
const message_html =
`<!DOCTYPE html>
<html lang="en">
<head>
<style>
@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');
</style>
</head>
<body style="font-family: 'Lato', sans-serif; background-color: #f9f9f9; padding: 20px; margin: 0;">
<div style="max-width: 600px; margin: auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
<p style="white-space: pre-line;font-size: 16px; line-height: 1.5; color: #333;">${text}</p>
<img src="cid:qrCode1" alt="QR Code" style="display: block; margin: 20px auto; max-width: 50%; min-width: 200px; height: auto;" />
<div style="width: 100%; display: flex; flex-direction: row; justify-content: space-between">
<div style="height: 4px; width: 20%; background: #00aeef;"></div>
<div style="height: 4px; width: 20%; background: #ec008c;"></div>
<div style="height: 4px; width: 20%; background: #7ac143;"></div>
<div style="height: 4px; width: 20%; background: #f47b20;"></div>
<div style="height: 4px; width: 20%; background: #2e3192;"></div>
</div>
<div style="font-size: 12px; color: #999; padding-top: 0px; margin-top: 10px; line-height: 1.5; ">
<p>This email has been generated with the help of ScanWave</p>
</div>
</div>
</body>
</html>`;
const boundary = 'BOUNDARY';
const nl = '\r\n'; // RFC-5322 line ending
// Convert HTML to a Buffer, then to latin1 string for quotedPrintable.encode
const htmlBuffer = Buffer.from(message_html, 'utf8');
const htmlLatin1 = htmlBuffer.toString('latin1');
const htmlQP = quotedPrintable.encode(htmlLatin1);
const qrLines = qr_code.replace(/.{1,76}/g, '$&' + nl);
const rawParts = [
'MIME-Version: 1.0',
`To: ${to}`,
`Subject: ${subject}`,
`Content-Type: multipart/related; boundary="${boundary}"`,
'',
`--${boundary}`,
'Content-Type: text/html; charset="UTF-8"',
'Content-Transfer-Encoding: quoted-printable',
'',
htmlQP,
'',
`--${boundary}`,
'Content-Type: image/png',
'Content-Transfer-Encoding: base64',
'Content-ID: <qrCode1>',
'Content-Disposition: inline; filename="qr.png"',
'',
qrLines,
'',
`--${boundary}--`,
''
];
const rawMessage = rawParts.join(nl);
const raw = Buffer.from(rawMessage).toString('base64url');
await gmail.users.messages.send({
userId: 'me',
requestBody: { raw }
});
export async function refreshAccessToken(refreshToken: string): Promise<string | null> {
try {
const response = await fetch('/api/auth/refresh', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({ refreshToken })
});
if (response.ok) {
const data = await response.json();
return data.accessToken;
}
return null;
} catch (error) {
console.error('Error refreshing token:', error);
return null;
}
}

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src/lib/sheets.ts Normal file
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import { google } from 'googleapis';
import { getAuthenticatedClient } from './google-server.js';
export interface GoogleSheet {
id: string;
name: string;
modifiedTime: string;
webViewLink: string;
}
export interface SheetData {
values: string[][];
}
export async function getRecentSpreadsheets(refreshToken: string, limit: number = 10): Promise<GoogleSheet[]> {
const oauth = getAuthenticatedClient(refreshToken);
const drive = google.drive({ version: 'v3', auth: oauth });
const response = await drive.files.list({
q: "mimeType='application/vnd.google-apps.spreadsheet'",
orderBy: 'modifiedTime desc',
pageSize: limit,
fields: 'files(id,name,modifiedTime,webViewLink)'
});
return response.data.files?.map(file => ({
id: file.id!,
name: file.name!,
modifiedTime: file.modifiedTime!,
webViewLink: file.webViewLink!
})) || [];
}
export async function getSpreadsheetData(refreshToken: string, spreadsheetId: string, range: string = 'A1:Z10'): Promise<SheetData> {
const oauth = getAuthenticatedClient(refreshToken);
const sheets = google.sheets({ version: 'v4', auth: oauth });
const response = await sheets.spreadsheets.values.get({
spreadsheetId,
range
});
return {
values: response.data.values || []
};
}
export async function getSpreadsheetInfo(refreshToken: string, spreadsheetId: string) {
const oauth = getAuthenticatedClient(refreshToken);
const sheets = google.sheets({ version: 'v4', auth: oauth });
const response = await sheets.spreadsheets.get({
spreadsheetId,
fields: 'properties.title,sheets.properties(title,sheetId)'
});
return response.data;
}