'use strict';

const { sep, resolve } = require('path');

const fs = require('fs');

// add suffix (".html" or sep for windows test) to each part of regex

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

const isEditable = `(security|index).html|(about|download|docs|foundation|get-involved|knowledge)\\${sep}`;

const isEditableReg = new RegExp(isEditable);

function githubLinks(options) {

return (files, m, next) => {

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

if (!isEditableReg.test(path)) {

return;

}

const file = files[path];

path = path.replace('.html', '.md').replace(/\\/g, '/');

// Step 1: Check each page's URL (generated by "permalinks") really matches

// the real file when converted back to "md".

let currentFilePath = resolve(

__dirname,

`../../locale/${options.locale}/${path}`

);

if (!fs.existsSync(currentFilePath)) {

path = path.replace('/index.md', '.md');

}

// Step 2: Check again each page URL's really exists or not (Because some files aren't

// localized, you can NEVER find the md file under such localization but under 'en').

// we have to create a new file with the given name here:

// E.g: 1. Create a new file named "aaa.md" under "locale/zh-cn/":

// https://github.com/nodejs/nodejs.org/new/main/locale/zh-cn/locale?filename=aaa.md

// E.g: 2. Create a new file with new folders:

// https://github.com/nodejs/nodejs.org/new/main/locale/zh-cn/locale?filename=folder1/folder2.../folderN/filename.md

let url = `https://github.com/nodejs/nodejs.org/edit/main/locale/${options.locale}/${path}`;

currentFilePath = resolve(

__dirname,

`../../locale/${options.locale}/${path}`

);

if (!fs.existsSync(currentFilePath)) {

url = `https://github.com/nodejs/nodejs.org/new/main/locale/${options.locale}/locale?filename=${path}&value=contribute%20your%20translation%20here,for%20more%20you%20can%20see:%20https://github.com/nodejs/nodejs.org/blob/main/TRANSLATION.md`;

}

const editOnGitHubTrans = options.site.editOnGithub || 'Edit on GitHub';

const replCallBack = (match, $1, $2) => {

return `<div class="openjsfoundation-footer-edit">

| <a href="${url}">${editOnGitHubTrans}</a>

</div>`;

};

const contents = file.contents

.toString()

.replace(

/<div class="openjsfoundation-footer-edit"><\/div>/,

replCallBack

);

file.contents = Buffer.from(contents);

});

next();

};

}

module.exports = githubLinks;