#!/usr/bin/env node

// Usage: node test.js

// Script that creates index.html out of web/template.html and README.md.

// It is written in JS because this code used to be executed on the client side.

// To install dependencies run:

// $ npm install -g jsdom jquery showdown highlightjs

// If running on mac and modules cant be found after instalation add:

// export NODE_PATH=/usr/local/lib/node_modules

// to the ~/.bash_profile or ~/.bashrc file and run '$ bash'.

const fs = require('fs');

const jsdom = require('jsdom');

const showdown = require('showdown');

const hljs = require('highlightjs');

const TOC =

'<br>' +

'<h2 id="toc">Contents</h2>\n' +

'<pre><code class="hljs bash"><strong>ToC</strong> = {\n' +

' <strong><span class="hljs-string">\'1. Collections\'</span></strong>: [<a href="#list">List</a>, <a href="#dictionary">Dict</a>, <a href="#set">Set</a>, <a href="#range">Range</a>, <a href="#enumerate">Enumerate</a>, <a href="#namedtuple">Namedtuple</a>, <a href="#iterator">Iterator</a>, <a href="#generator">Generator</a>],\n' +

' <strong><span class="hljs-string">\'2. Types\'</span></strong>: [<a href="#type">Type</a>, <a href="#string">String</a>, <a href="#regex">Regex</a>, <a href="#format">Format</a>, <a href="#numbers">Numbers</a>, <a href="#combinatorics">Combinatorics</a>, <a href="#datetime">Datetime</a>ᴺᴱᵂ],\n' +

' <strong><span class="hljs-string">\'3. Syntax\'</span></strong>: [<a href="#arguments">Arguments</a>, <a href="#splatoperator">Splat</a>, <a href="#inline">Inline</a>, <a href="#closure">Closure</a>, <a href="#decorator">Decorator</a>, <a href="#class">Class</a>, <a href="#enum">Enum</a>, <a href="#exceptions">Exceptions</a>],\n' +

' <strong><span class="hljs-string">\'4. System\'</span></strong>: [<a href="#print">Print</a>, <a href="#input">Input</a>, <a href="#commandlinearguments">Command_Line_Arguments</a>, <a href="#open">Open</a>, <a href="#path">Path</a>ᴺᴱᵂ, <a href="#commandexecution">Command_Execution</a>],\n' +

' <strong><span class="hljs-string">\'5. Data\'</span></strong>: [<a href="#csv">CSV</a>, <a href="#json">JSON</a>, <a href="#pickle">Pickle</a>, <a href="#sqlite">SQLite</a>, <a href="#bytes">Bytes</a>, <a href="#struct">Struct</a>, <a href="#array">Array</a>, <a href="#memoryview">MemoryView</a>, <a href="#deque">Deque</a>],\n' +

' <strong><span class="hljs-string">\'6. Advanced\'</span></strong>: [<a href="#threading">Threading</a>, <a href="#introspection">Introspection</a>, <a href="#metaprograming">Metaprograming</a>, <a href="#operator">Operator</a>, <a href="#eval">Eval</a>, <a href="#coroutine">Coroutine</a>],\n' +

' <strong><span class="hljs-string">\'7. Libraries\'</span></strong>: [<a href="#progressbar">Progress_Bar</a>, <a href="#plot">Plot</a>, <a href="#table">Table</a>, <a href="#curses">Curses</a>, <a href="#logging">Logging</a>ᴺᴱᵂ, <a href="#scraping">Scraping</a>, <a href="#web">Web</a>, <a href="#profile">Profile</a>,\n' +

' <a href="#numpy">NumPy</a>, <a href="#image">Image</a>, <a href="#audio">Audio</a>]\n' +

'}\n' +

'</code></pre>\n';

const MRO =

'<pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>C.mro()\n[&lt;<span class="hljs-class"><span class="hljs-title">class</span> \'<span class="hljs-title">C</span>\'&gt;, &lt;<span class="hljs-title">class</span> \'<span class="hljs-title">A</span>\'&gt;, &lt;<span class="hljs-title">class</span> \'<span class="hljs-title">B</span>\'&gt;, &lt;<span class="hljs-title">class</span> \'<span class="hljs-title">object</span>\'&gt;]</span></code>\n</pre>\n'

function main() {

const html = getMd();

initDom(html);

modifyPage();

const template = readFile('web/template.html');

const tokens = template.split('<div id=main_container></div>');

const text = `${tokens[0]} ${document.body.innerHTML} ${tokens[1]}`;

writeToFile('index.html', text);

}

function initDom(html) {

const { JSDOM } = jsdom;

const dom = new JSDOM(html);

const $ = (require('jquery'))(dom.window);

global.$ = $;

global.document = dom.window.document;

}

function getMd() {

const readme = readFile('README.md');

const converter = new showdown.Converter();

return converter.makeHtml(readme);

}

function modifyPage() {

removeOrigToc();

addToc();

insertLinks();

unindentBanner();

highlightCode();

}

function removeOrigToc() {

const headerContents = $('#contents');

const contentsList = headerContents.next();

headerContents.remove();

contentsList.remove();

}

function addToc() {

const nodes = $.parseHTML(TOC);

$('#main').before(nodes);

}

function insertLinks() {

$('h2').each(function() {

const aId = $(this).attr('id');

const text = $(this).text();

const line = `<a href="#${aId}" name="${aId}">#</a>${text}`;

$(this).html(line);

});

}

function unindentBanner() {

const montyImg = $('img').first();

montyImg.parent().addClass('banner');

const downloadPraragrapth = $('p').first();

downloadPraragrapth.addClass('banner');

}

function highlightCode() {

setApache('<D>')

setApache('<T>')

setApache('<DT>')

setApache('<TD>')

setApache('<a>')

setApache('<n>')

$('code').not('.python').not('.text').not('.bash').not('.apache').addClass('python');

$('code').each(function(index) {

hljs.highlightBlock(this);

});

$('#copy').prev().remove()

const nodes = $.parseHTML(MRO);

$('#copy').before(nodes);

}

function setApache(codeContents) {

$(`code:contains(${codeContents})`).addClass('apache');

}

function readFile(filename) {

try {

return fs.readFileSync(filename, 'utf8');

} catch(e) {

console.error('Error:', e.stack);

}

}

function writeToFile(filename, text) {

try {

return fs.writeFileSync(filename, text, 'utf8');

} catch(e) {

console.error('Error:', e.stack);

}

}

main();