const express = require('express');
const session = require('express-session');
const app = express();
const port = 3000;

const commands = require("./commands/commands");

app.use(express.static("httpdocs/public"));

const documentRoot = `${__dirname}/httpdocs`;

// Session configuration
app.use(session({
    secret: 'your-secret', // Change this to a secret phrase
    resave: false,
    saveUninitialized: true,
    cookie: { secure: false } // Set to true if using https
}));

app.get('/', (req, res) => {
    if (!req.session.state) {
        req.session.state = {
            "username": "guest",
            "directory": `/home/guest/`
        };
    }
    res.sendFile(documentRoot + "/index.html");
});

app.get("/execute", (req, res) => {
    const raw_command = req.query.command;
    if (raw_command == ""){
        commands.customTextResponse(req, res, "");
        return;
    }

    const formatted_command = raw_command.trim();
    const command = formatted_command.split(" ")[0];

    switch(command){
        case "ls":
            commands.ls(req, res);
            break;
        case "whoami":
            commands.whoami(req, res);
            break;
        case "cd":
            commands.cd(req, res, formatted_command); 
            break;
        case "pwd":
            commands.pwd(req, res);
            break;
        case "cat":
            commands.cat(req, res, formatted_command);
            break;
        case "help":
            commands.help(req, res);
            break;
        case "info":
            commands.info(req, res);
            break;
        default:
            commands.customTextResponse(req, res, "Command '" + command + "' not found, please try again later, or type 'help' for the list of available commands");
            break;
    }
});

app.get("/currentDir", (req, res) => {
    res.send(commands.getCurrentDir(req.session.state));
});

app.listen(port, () => {
    console.log(`Epic Terminal App listening on port ${port}`);
});