@andrea9293/mcp-gemini-prompt-enhancer/dist/core/services/utils-service.js

A Model Context Protocol (MCP) server that provides a prompt optimization service for Large Language Models (LLMs) using Google Gemini, with advanced prompt engineering thanks to 22365_3_Prompt_Engineering_v7.pdf authored by Lee Boonstra

import * as fs from 'fs';
import * as path from 'path';
import * as https from 'https';
import 'dotenv/config';
/**
 * A simple service for generating prompts
 */
export class UtilsService {
    /**
     * Enhance a prompt
     * @param prompt The prompt to enhance
     * @returns The enhanced prompt
     */
    static async ensurePdfExistsService() {
        console.error("Ensuring PDF exists asynchronously...");
        return await ensurePdfExists();
    }
}
async function ensurePdfExists() {
    // Get home directory cross-platform
    const homeDir = process.env.USERPROFILE || process.env.HOME;
    console.error(`Home directory: ${homeDir}`);
    if (!homeDir)
        throw new Error('Unable to determine home directory');
    const enhancerDir = path.join(homeDir, '.mcp-enhancer-service');
    if (!fs.existsSync(enhancerDir)) {
        fs.mkdirSync(enhancerDir, { recursive: true });
    }
    const pdfFileName = '22365_3_Prompt_Engineering_v7.pdf';
    const pdfPath = path.join(enhancerDir, pdfFileName);
    if (!fs.existsSync(pdfPath)) {
        console.error(`PDF not found at ${pdfPath}, downloading...`);
        // Download PDF
        const fileUrl = 'https://www.innopreneur.io/wp-content/uploads/2025/04/22365_3_Prompt-Engineering_v7-1.pdf';
        await new Promise((resolve, reject) => {
            const file = fs.createWriteStream(pdfPath);
            https.get(fileUrl, (response) => {
                if (response.statusCode !== 200) {
                    reject(new Error(`Failed to download PDF: ${response.statusCode}`));
                    return;
                }
                response.pipe(file);
                file.on('finish', () => {
                    file.close();
                    resolve();
                });
            }).on('error', (err) => {
                fs.unlinkSync(pdfPath);
                reject(err);
            });
        });
        console.error(`PDF downloaded to ${pdfPath}`);
    }
    else {
        console.error(`PDF already exists at ${pdfPath}`);
    }
    return pdfPath;
}