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/*
* extract script content from a series of html files, run a
* jscodeshift codemod on them and overwrite the original file.
*
* Usage: node html-codemod.js codemod-file list of files to process
*/
const { JSDOM } = require('jsdom');
const fs = require('fs');
const {execFileSync} = require('child_process');
const codemod = process.argv[2];
const filenames = process.argv.slice(3);
filenames.forEach((filename) => {
const originalContent = fs.readFileSync(filename, 'utf-8');
const dom = new JSDOM(originalContent);
const document = dom.window.document;
const scriptTags = document.querySelectorAll('script');
const lastTag = scriptTags[scriptTags.length - 1];
const script = lastTag.innerHTML;
if (!script) {
console.log('NO SCRIPT FOUND', filename);
return;
}
const scriptFilename = filename + '.codemod.js';
const scriptFile = fs.writeFileSync(scriptFilename, script);
// exec jscodeshift
const output = execFileSync('./node_modules/.bin/jscodeshift', ['-t', codemod, scriptFilename]);
console.log(filename, output.toString()); // output jscodeshift output.
// read back file, resubstitute
const newScript = fs.readFileSync(scriptFilename, 'utf-8').toString();
const modifiedContent = originalContent.split(script).join(newScript);
fs.writeFileSync(filename, modifiedContent);
fs.unlinkSync(scriptFilename);
});
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