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const path = require('path');
const config = require('./config.js');
const slugUtils = require('./static/js/slug.js');
const helperFunctions = {
generateSlug : slugUtils.generateSlug,
sendFile : function (res, fileName) {
res.sendFile(fileName, {
root: path.join(__dirname)
}, err => {
if (!err) return;
utils.sendNotFoundError(res)
});
},
sendNotFoundError : function (res) {
if (!res.headersSent) res.status(404);
const statusJson = {status: "ERROR", statusCode: 404, errorType: "NOT FOUND", errorMessage: "Not Found"};
res.sendFile('static/notfound.html', {root: path.join(__dirname)},
err => {
if (!err) return;
console.error('[express] Encountered an error:', err);
if (!res.headersSent) res.json(statusJson);
else res.send(JSON.stringify(statusJson));
});
},
sendBadRequestError : function (res, errorMessage, uiString) {
res.status(400).json({status: "ERROR", statusCode: 400, errorType: "BAD REQUEST", errorMessage, uiString});
},
sendInternalServerError : function (res, error) {
console.error('[express] Error:', error);
res.status(404).json({status: "ERROR", statusCode: 500, errorType: "INTERNAL", errorMessage: "Internal Server Error"});
},
sendSuccessfulSlugCreation : function (res, slug) {
res.status(201).json({status: "SUCCESS", statusCode: 201, data: {shortUrl: config.BASE+slug}});
},
isSlugFormatted : function (str) {
return str.match(/^[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]$/) !== null;
},
isUrlFormatted : function (str) {
try {
new URL(str);
return true;
} catch (err) {
return false;
}
}
};
module.exports = helperFunctions;
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