95 lines
3.1 KiB
JavaScript
95 lines
3.1 KiB
JavaScript
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const { AppError } = require('../utils/errorUtils');
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//----------------------------------------------------------------------------------------------------------//
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// ERROR HANDLING FUNCTIONS ACC TO ENVIRONMENTS
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//----------------------------------------------------------------------------------------------------------//
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// for errors during development
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const devErrorHandler = (err, req, res) => {
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req.originalUrl.startsWith('/api/')
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? // 1) FOR API
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res.status(err.statusCode).json({
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status: err.status,
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message: err.message,
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stack: err.stack,
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err,
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})
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: // 2) FOR RENDERED PAGES
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res.render('error', {
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title: 'an error occured',
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page: 'error',
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message: err.message,
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statusCode: err.statusCode,
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stack: err.stack,
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});
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};
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// for errors during production
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const prodErrorHandler = (err, req, res) => {
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if (req.originalUrl.startsWith('/api/'))
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// 1) FOR API
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// for trusted, operational errors
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err.isOperational
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? res
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.status(err.statusCode)
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.json({ status: err.status, message: err.message })
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: // for untrusted errors sending a generic message
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res
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.status(500)
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.json({ status: 'fail', message: 'something went wrong!' });
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// 2) FOR RENDERED PAGES
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err.isOperational
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? res.render('error', {
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title: 'something went wrong',
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page: 'error',
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message: err.message,
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statusCode: err.statusCode,
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})
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: res.render('error', {
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title: 'an error occured',
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page: 'error',
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message: 'something went wrong!',
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statusCode: 500,
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});
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// err;
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};
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//-------------------------------------------------------------------------------------------------------------//
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// MAIN EXPRESS ERROR HANDLING MIDDLEWARE
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//-------------------------------------------------------------------------------------------------------------//
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const globalErrorHandler = (err, req, res, next) => {
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// setting some defaults on the error in case they don't exist already
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err.statusCode = err.statusCode || 500;
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err.status = err.status || 'error';
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// logging error to the console
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console.log('\x1b[31m%s\x1b[0m', '🔴️ ERROR:', err); // with red color
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// sending error to the client
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// for dev environment
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if (process.env.NODE_ENV === 'development') devErrorHandler(err, req, res);
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// for prod environment
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else if (process.env.NODE_ENV === 'production') {
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let error = { ...err };
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// marking some special errors as operational
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// axios errors
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if (err.isAxiosError) {
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// if connection can't be established to imdb for some reason
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if (err.code === 'ENETUNREACH' || err.code === 'ENOTFOUND')
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error = new AppError(
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'there was some problem fetching data from IMDb',
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500
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);
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// in case the url is wrong(like bad title id)
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if (err.response)
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error = new AppError(err.response.statusText, err.response.status);
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}
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prodErrorHandler(error, req, res);
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}
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};
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module.exports = globalErrorHandler;
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