import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
import { OAuth2Client } from "google-auth-library";
import { GaxiosError } from 'gaxios';
import { calendar_v3, google } from "googleapis";
export abstract class BaseToolHandler {
abstract runTool(args: any, oauth2Client: OAuth2Client): Promise<CallToolResult>;
protected handleGoogleApiError(error: unknown): void {
if (
error instanceof GaxiosError &&
error.response?.data?.error === 'invalid_grant'
) {
throw new Error(
'Google API Error: Authentication token is invalid or expired. Please re-run the authentication process (e.g., `npm run auth`).'
);
}
throw error;
}
protected getCalendar(auth: OAuth2Client): calendar_v3.Calendar {
return google.calendar({ version: 'v3', auth });
}
}
