/* This is the web builder script that generates the web files. Run using `npm run webber`. */ // Load modules const fs = require('fs-extra'), path = require('path'), chalk = require('chalk'), md = require('markdown-it')(), minify = require('html-minifier').minify; const util = require('./util'); var Prism = require('prismjs'); const minifyHTML = str => minify(str, { collapseBooleanAttributes: true, collapseWhitespace: true, decodeEntities: false, minifyCSS: true, minifyJS: true, keepClosingSlash: true, processConditionalComments: true, removeAttributeQuotes: false, removeComments: true, removeEmptyAttributes: false, removeOptionalTags: false, removeScriptTypeAttributes: false, removeStyleLinkTypeAttributes: false, trimCustomFragments: true }); const unescapeHTML = str => str.replace( /&|<|>|'|"/g, tag => ({ '&': '&', '<': '<', '>': '>', ''': "'", '"': '"' }[tag] || tag) ); const generateSnippetCard = ( snippetList, snippetKey, addCornerTag = false ) => `
${ addCornerTag ? `
` : '' } ${md .render(`\n${addCornerTag ? snippetList[snippetKey[0] + '.md'] : snippetList[snippetKey[0]]}`) .replace(/

/g, '

') .replace( /
/m,
      '
'
    )
    .replace(
      /
([^\0]*?)<\/code><\/pre>/gm,
      (match, p1) =>
        `
${Prism.highlight(
          unescapeHTML(p1),
          Prism.languages.javascript
        )}
`
    )
    .replace(/<\/div>\s*
\s+
examples

${['adapter','array','function','object'].includes(tag) ? 
'
Recommended Resource - ES6: The Right Parts
Learn new ES6 JavaScript language features like arrow function, destructuring, generators & more to write cleaner and more productive, readable programs.
' 
: ['browser', 'node', 'date'].includes(tag) ? 
'
Recommended Resource - JavaScript: The Hard Parts
Take your JavaScript to the next level. Gain an understanding of callbacks, higher order functions, closure, asynchronous and object-oriented JavaScript!
' 
: '
Recommended Resource - JavaScript: From Fundamentals to Functional JS
Learn higher-order functions, closures, scope, master key functional methods like map, reduce and filter and promises and ES6+ asynchronous JavaScript.
'
}
`;
const filterSnippets = (snippetList, excludedFiles) =>
  Object.keys(snippetList)
    .filter(key => !excludedFiles.includes(key))
    .reduce((obj, key) => {
      obj[key] = snippetList[key];
      return obj;
    }, {});
if (
  util.isTravisCI() &&
  /^Travis build: \d+/g.test(process.env['TRAVIS_COMMIT_MESSAGE']) &&
  process.env['TRAVIS_EVENT_TYPE'] !== 'cron' &&
  process.env['TRAVIS_EVENT_TYPE'] !== 'api'
) {
  console.log(
    `${chalk.green('NOBUILD')} website build terminated, parent commit is a Travis build!`
  );
  process.exit(0);
}
// Compile the SCSS file, using `node-sass`.
const sass = require('node-sass');
sass.render(
  {
    file: path.join('docs', 'scss', 'style.scss'),
    outFile: path.join('docs', 'style.css'),
    outputStyle: 'compressed'
  },
  function(err, result) {
    if (!err) {
      fs.writeFile(path.join('docs', 'style.css'), result.css, function(err2) {
        if (!err2) console.log(`${chalk.green('SUCCESS!')} style.css file generated!`);
        else console.log(`${chalk.red('ERROR!')} During style.css file generation: ${err}`);
      });
    } else
      console.log(`${chalk.red('ERROR!')} During style.css file generation: ${err}`);

  }
);
// Set variables for paths
const snippetsPath = './snippets',
  archivedSnippetsPath = './snippets_archive',
  glossarySnippetsPath = './glossary',
  staticPartsPath = './static-parts',
  docsPath = './docs',
  staticFiles = ['about.html', 'contributing.html', 'array.html'];
// Set variables for script
let snippets = {},
  archivedSnippets = {},
  glossarySnippets = {},
  startPart = '',
  endPart = '',
  output = '',
  archivedOutput = '',
  glossaryOutput = '',
  pagesOutput = [],
  tagDbData = {};
// Start the timer of the script
console.time('Webber');
// Synchronously read all snippets and sort them as necessary (case-insensitive)
snippets = util.readSnippets(snippetsPath);
archivedSnippets = util.readSnippets(archivedSnippetsPath);
glossarySnippets = util.readSnippets(glossarySnippetsPath);

// Load static parts for all pages
try {
  [startPart, endPart, staticPageStartPart, staticPageEndPart] = [
    'page-start.html',
    'page-end.html',
    'static-page-start.html',
    'static-page-end.html'
  ].map(filename => fs.readFileSync(path.join(staticPartsPath, filename), 'utf8'));
} catch (err) {
  // Handle errors (hopefully not!)
  console.log(`${chalk.red('ERROR!')} During static part loading: ${err}`);
  process.exit(1);
}
// Load tag data from the database
tagDbData = util.readTags();

// Create the output for individual category pages
try {
  let taggedData = util.prepTaggedData(tagDbData);
  // Add the start static part
  output += `${startPart}${'\n'}`;
  // Loop over tags and snippets to create the table of contents
  for (let tag of taggedData) {
    output +=
      '
' +
      md
        .render(`${util.capitalize(tag, true)}\n`)
        .replace(/
/g, '')
        .replace(/<\/p>/g, '') +
      '
    ';
    for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
      output += md
        .render(
          `[${taggedSnippet[0]}](./${
            tag === 'array' ? 'index' : tag
          }#${taggedSnippet[0].toLowerCase()})\n`
        )
        .replace(/
    /g, '')
        .replace(/<\/p>/g, '')
        .replace(/Archive
  
    Glossary
    
  
    Contributing
    
  
    About
    
  
    
  


    `;
  // Loop over tags and snippets to create the list of snippets
  for (let tag of taggedData) {
    let notEmbedded = true;
    let localOutput = output
      .replace(/\$tag/g, util.capitalize(tag))
      .replace(new RegExp(`./${tag}#`, 'g'), '#');
    if (tag === 'array') localOutput = localOutput.replace(new RegExp('./index#', 'g'), '#');
    localOutput += md
      .render(`## ${util.capitalize(tag, true)}\n`)
      .replace(/
    /g, '
    ');
    for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
      localOutput += generateSnippetCard(snippets, taggedSnippet, true);
      if (Object.entries(tagDbData).filter(v => v[1][0] === tag).findIndex(v => v[0] === taggedSnippet[0]) >= Object.entries(tagDbData).filter(v => v[1][0] === tag).length * 0.5 && notEmbedded) {
        notEmbedded = !notEmbedded;
        localOutput += embedCard(tag);
      }
    }
    // Add the ending static part
    localOutput += `\n${endPart + '\n'}`;
    // Optimize punctuation nodes
    localOutput = util.optimizeNodes(
      localOutput,
      /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
      (match, p1, p2, p3) => `${p1}${p2}${p3}`
    );
    // Optimize operator nodes
    localOutput = util.optimizeNodes(
      localOutput,
      /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
      (match, p1, p2, p3) => `${p1}${p2}${p3}`
    );
    // Optimize keyword nodes
    localOutput = util.optimizeNodes(
      localOutput,
      /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
      (match, p1, p2, p3) => `${p1}${p2}${p3}`
    );
    pagesOutput.push({ tag, content: localOutput });
  }
  // Minify output
  pagesOutput.forEach(page => {
    page.content = minifyHTML(page.content);
    fs.writeFileSync(
      path.join(docsPath, (page.tag === 'array' ? 'index' : page.tag) + '.html'),
      page.content
    );
    console.log(
      `${chalk.green('SUCCESS!')} ${page.tag === 'array' ? 'index' : page.tag}.html file generated!`
    );
  });
} catch (err) {
  // Handle errors (hopefully not!)
  console.log(`${chalk.red('ERROR!')} During category page generation: ${err}`);
  process.exit(1);
}

const generateMenuForStaticPage = staticPart => {
  let taggedData = util.prepTaggedData(tagDbData);
  // Add the start static part
  let htmlCode;

  for (let tag of taggedData) {
    htmlCode +=
      '
    ' +
      md
        .render(`${util.capitalize(tag, true)}\n`)
        .replace(/
    /g, '')
        .replace(/<\/p>/g, '') +
      '
    
  
    Glossary
    
  
    Contributing
    
  
    About
    
  
    
  


    ${heading}
    
        
    ${description}

    `;
  return htmlCode.replace(/\$page_name/g, util.capitalize(heading));
};


// Create the output for the archive.html file
try {
  // Add the static part
  let heading = 'Snippets Archive';
  let description = "These snippets, while useful and interesting, didn't quite make it into the repository due to either having very specific use-cases or being outdated. However we felt like they might still be useful to some readers, so here they are.";
  let htmlCode = staticPageStartGenerator(staticPageStartPart, heading, description);

  archivedOutput += htmlCode;

  // Filter README.md from folder
  const filteredArchivedSnippets = filterSnippets(archivedSnippets, ['README.md']);

  // Generate archived snippets from md files
  for (let snippet of Object.entries(filteredArchivedSnippets))
    archivedOutput += generateSnippetCard(filteredArchivedSnippets, snippet, false);

  // Optimize punctuation nodes
  archivedOutput = util.optimizeNodes(
    archivedOutput,
    /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
    (match, p1, p2, p3) => `${p1}${p2}${p3}`
  );
  // Optimize operator nodes
  archivedOutput = util.optimizeNodes(
    archivedOutput,
    /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
    (match, p1, p2, p3) => `${p1}${p2}${p3}`
  );
  // Optimize keyword nodes
  archivedOutput = util.optimizeNodes(
    archivedOutput,
    /([^\0<]*?)<\/span>([\n\r\s]*)([^\0]*?)<\/span>/gm,
    (match, p1, p2, p3) => `${p1}${p2}${p3}`
  );

  archivedOutput += `${staticPageEndPart}`;

  // Generate and minify 'archive.html' file
  const minifiedArchivedOutput = minifyHTML(archivedOutput);

  fs.writeFileSync(path.join(docsPath, 'archive.html'), minifiedArchivedOutput);
  console.log(`${chalk.green('SUCCESS!')} archive.html file generated!`);
} catch (err) {
  console.log(`${chalk.red('ERROR!')} During archive.html generation: ${err}`);
  process.exit(1);
}

// Create the output for the glossary.html file
try {
  // Add the static part
  let heading = 'Glossary';
  let description = 'Developers use a lot of terminology daily. Every once in a while, you might find a term you do not know. We know how frustrating that can get, so we provide you with a handy glossary of frequently used web development terms.';
  let htmlCode = staticPageStartGenerator(staticPageStartPart, heading, description);
  glossaryOutput += htmlCode;

  // Filter README.md from folder
  const filteredGlossarySnippets = filterSnippets(glossarySnippets, ['README.md']);

  // Generate glossary snippets from md files
  for (let snippet of Object.entries(filteredGlossarySnippets)) {
    glossaryOutput +=
      '
    ' +
      md
        .render(`\n${filteredGlossarySnippets[snippet[0]]}`)
        .replace(/
    /g, '
    ') +
      '
    ';
  }

  glossaryOutput += `${staticPageEndPart}`;

  // Generate and minify 'glossary.html' file
  const minifiedGlossaryOutput = minifyHTML(glossaryOutput);
  fs.writeFileSync(path.join(docsPath, 'glossary.html'), minifiedGlossaryOutput);
  console.log(`${chalk.green('SUCCESS!')} glossary.html file generated!`);
} catch (err) {
  console.log(`${chalk.red('ERROR!')} During glossary.html generation: ${err}`);
  process.exit(1);
}

// Copy static files
staticFiles.forEach(f => {
  try {
    if(f !== 'array.html') {
      let fileData = fs.readFileSync(path.join(staticPartsPath, f), 'utf8');
      fs.writeFileSync(path.join(docsPath, f), generateMenuForStaticPage(fileData));
    } else
      fs.copyFileSync(path.join(staticPartsPath, f), path.join(docsPath, f));
    console.log(`${chalk.green('SUCCESS!')} ${f} file copied!`);
  } catch (err) {
    console.log(`${chalk.red('ERROR!')} During ${f} copying: ${err}`);
    process.exit(1);
  }
});

// Log the time taken
console.timeEnd('Webber');