mirror of https://github.com/lissy93/dashy
53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
/**
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* This file exports a function, used by the write config endpoint.
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* It will make a backup of the users conf.yml file
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* and then write their new config into the main conf.yml file.
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* Finally, it will call a function with the status message
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*/
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const fsPromises = require('fs').promises;
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module.exports = async (newConfig, render) => {
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// Define constants for the config file
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const settings = {
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defaultLocation: './public/',
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defaultFile: 'conf.yml',
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filename: 'conf',
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backupDenominator: '.backup.yml',
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};
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// Make the full file name and path to save the backup config file
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const backupFilePath = `${settings.defaultLocation}${settings.filename}-`
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+ `${Math.round(new Date() / 1000)}${settings.backupDenominator}`;
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// The path where the main conf.yml should be read and saved to
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const defaultFilePath = settings.defaultLocation + settings.defaultFile;
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// Returns a string confirming successful job
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const getSuccessMessage = () => `Successfully backed up ${settings.defaultFile} to`
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+ ` ${backupFilePath}, and updated the contents of ${defaultFilePath}`;
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// Encoding options for writing to conf file
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const writeFileOptions = { encoding: 'utf8' };
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// Prepare the response returned by the API
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const getRenderMessage = (success, errorMsg) => JSON.stringify({
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success,
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message: !success ? errorMsg : getSuccessMessage(),
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});
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// Makes a backup of the existing config file
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await fsPromises.copyFile(defaultFilePath, backupFilePath)
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.catch((error) => {
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render(getRenderMessage(false, `Unable to backup conf.yml: ${error}`));
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});
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// Writes the new content to the conf.yml file
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await fsPromises.writeFile(defaultFilePath, newConfig.config.toString(), writeFileOptions)
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.catch((error) => {
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render(getRenderMessage(false, `Unable to write changes to conf.yml: ${error}`));
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});
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// If successful, then render hasn't yet been called- call it
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await render(getRenderMessage(true));
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};
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