'use strict'

// This middleware adds "Edit on GitHub" links to every editable page

function githubLinks (options) {

return (files, m, next) => {

// add suffix (".html" or "/" or "\" for Windows) to each part of regex

// to ignore possible occurrences in titles (e.g. blog posts)

const isEditable = /security\.html|about(\/|\\)|docs(\/|\\)|foundation(\/|\\)|get-involved(\/|\\)|knowledge(\/|\\)/

Object.keys(files).forEach((path) => {

if (!isEditable.test(path)) {

return

}

const file = files[path]

const url = `https://github.com/nodejs/nodejs.org/edit/master/locale/${options.locale}/${path.replace('.html', '.md').replace(/\\/g, '/')}`

const editText = options.site.editOnGithub || 'Edit on GitHub'

const contents = file.contents.toString().replace(/<h1(.*?)>(.*?)<\/h1>/, (match, $1, $2) => {

return `<a class="edit-link" href="${url}">${editText}</a> <h1${$1}>${$2}</h1>`

})

file.contents = Buffer.from(contents)

})

next()

}

}

module.exports = githubLinks