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//handle duplicates
const handleDuplicateKeyError = (err, res) => {
const field = Object.keys(err.keyValue);
const code = 409;
const error = `An document with that ${field} already exists.`;
console.log('congrats you hit the duped keys error');
res.status(code).send({ messages: error, fields: field });
};
//handle validation errors
const handleValidationError = (err, res) => {
console.log('congrats you hit the validation middleware');
let errors = Object.values(err.errors).map((el) => el.message);
let fields = Object.values(err.errors).map((el) => el.path);
let code = 400;
if (errors.length > 1) {
const formattedErrors = errors.join(' ');
res.status(code).send({ messages: formattedErrors, fields: fields });
} else {
res.status(code).send({ messages: errors, fields: fields });
}
};
// eslint-disable-next-line no-unused-vars
module.exports = (err, req, res, next) => {
try {
console.log('congrats you hit the error middleware');
if (err.name === 'ValidationError') {
return (err = handleValidationError(err, res));
}
if (err.code && err.code == 11000) {
return (err = handleDuplicateKeyError(err, res));
}
} catch (err) {
res.status(500).send('An unknown error occurred.');
}
};
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