// server

// app/connectionHandler.js

const fs = require("fs")

const path = require("path")

const { createNamespacedDebug } = require("./logger")

const { HTTP, MESSAGES, DEFAULTS } = require("./constants")

const { modifyHtml } = require("./utils")

const debug = createNamespacedDebug("connectionHandler")

/**

* Handle reading the file and processing the response.

* @param {string} filePath - The path to the HTML file.

* @param {Object} config - The configuration object to inject into the HTML.

* @param {Object} res - The Express response object.

*/

function handleFileRead(filePath, config, res) {

// eslint-disable-next-line consistent-return

fs.readFile(filePath, "utf8", (err, data) => {

if (err) {

return res

.status(HTTP.INTERNAL_SERVER_ERROR)

.send(MESSAGES.CLIENT_FILE_ERROR)

}

const modifiedHtml = modifyHtml(data, config)

res.send(modifiedHtml)

})

}

/**

* Handle the connection request and send the modified client HTML.

* @param {Object} req - The Express request object.

* @param {Object} res - The Express response object.

*/

function handleConnection(req, res) {

debug("Handling connection req.path:", req.path)

const clientPath = path.resolve(

__dirname,

"..",

"node_modules",

"webssh2_client",

"client",

"public"

)

const tempConfig = {

socket: {

url: `${req.protocol}://${req.get("host")}`,

path: "/ssh/socket.io"

},

autoConnect: req.path.startsWith("/host/") // Automatically connect if path starts with /host/

}

const filePath = path.join(clientPath, DEFAULTS.CLIENT_FILE)

handleFileRead(filePath, tempConfig, res)

}

module.exports = handleConnection