55 lines
1.5 KiB
TypeScript
55 lines
1.5 KiB
TypeScript
type ValidateImapParams = {
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host: string;
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port: number;
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secure: boolean;
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user: string;
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pass?: string;
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accessToken?: string;
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};
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type ValidateImapResult = { ok: true; folderCount: number } | { ok: false; error: string };
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export async function validateImapConnection(params: ValidateImapParams): Promise<ValidateImapResult> {
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const { ImapFlow } = await import('imapflow');
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const auth: { user: string; pass?: string; accessToken?: string } = { user: params.user };
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if (params.accessToken) {
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auth.accessToken = params.accessToken;
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} else if (params.pass) {
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auth.pass = params.pass;
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} else {
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return { ok: false, error: 'No authentication credentials provided' };
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}
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const client = new ImapFlow({
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host: params.host,
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port: params.port,
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secure: params.secure,
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auth,
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logger: false,
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greetingTimeout: 60_000,
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socketTimeout: 60_000,
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});
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try {
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const result = await Promise.race([
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(async () => {
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await client.connect();
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const folders = await client.list();
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await client.logout();
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return { ok: true as const, folderCount: folders.length };
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})(),
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new Promise<ValidateImapResult>((_, reject) =>
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setTimeout(() => reject(new Error('Connection timed out')), 90_000),
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),
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]);
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return result;
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} catch (err) {
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try {
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client.close();
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} catch {}
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const message = err instanceof Error ? err.message : 'Connection failed';
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return { ok: false, error: message };
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}
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}
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