server.js

const express = require("express");
const path = require("path");
const { execFile, exec } = require("child_process");

const app = express();
const PORT = process.env.PORT || 3000;

const C_SRC = path.join(__dirname, "password.c");
const BINARY = path.join(__dirname, "password");

exec(`gcc "${C_SRC}" -o "${BINARY}"`, (err, stdout, stderr) => {
    if (err) {
        console.error("Failed to compile password.c:", stderr);
        process.exit(1);
    }
    console.log("password.c compiled successfully");

    app.get("/", (req, res) => {
        res.sendFile(path.join(__dirname, "index.html"));
    });

    app.get("/generate", (req, res) => {
        const length = req.query.length || "12";

        execFile(BINARY, [length], (error, stdout, stderr) => {
            if (error) {
                console.error("Generator error:", stderr);
                return res.status(500).json({ error: "Generator failed" });
            }
            res.json({ password: stdout.trim() });
        });
    });

    app.listen(PORT, () => {
        console.log(`PassForge running at http://localhost:${PORT}`);
    });
});