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var _ = require('lodash');
var dom = require('./dom');
var SELECTOR_LIST = 'ol, ul';
var SELECTOR_LINK = '> a, p > a';
var SELECTOR_PART = 'h2, h3, h4';
var BL = '\n';
/**
Find a list
@param {cheerio.Node}
@return {cheerio.Node}
*/
function findList($parent) {
var $container = $parent.children('.olist');
if ($container.length > 0) $parent = $container.first();
return $parent.children(SELECTOR_LIST);
}
/**
Parse a ul list and return list of chapters recursvely
@param {cheerio.Node}
@param {cheerio.DOM}
@return {Array}
*/
function parseList($ul, $) {
var articles = [];
$ul.children('li').each(function() {
var article = {};
var $li = $(this);
// Get text for the entry
var $p = $li.children('p');
article.title = ($p.text() || dom.textNode($li.get(0))).trim();
// Parse link
var $a = $li.find(SELECTOR_LINK);
if ($a.length > 0) {
article.title = $a.first().text();
article.ref = $a.attr('href').replace(/\\/g, '/').replace(/^\/+/, '');
}
// Sub articles
var $sub = findList($li);
article.articles = parseList($sub, $);
if (!article.title) return;
articles.push(article);
});
return articles;
}
/**
Find all parts and their corresponding lists
@param {cheerio.Node}
@param {cheerio.DOM}
@return {Array<{title: String, list: cheerio.Node}>}
*/
function findParts($parent, $) {
// Find parts and lists
// TODO asciidoc compatibility
var partsAndLists = $parent.children(SELECTOR_LIST + ', ' + SELECTOR_PART);
// Group each part with the list after
var parts = [];
var previousPart = null;
partsAndLists.each(function (i, el) {
if (isPartNode(el)) {
if (previousPart !== null) {
// The previous part was empty
parts.push(previousPart);
}
previousPart = {
title: getPartTitle(el, $),
list: null
};
} else { // It is a list
if (previousPart !== null) {
previousPart.list = el;
} else {
previousPart = {
title: '',
list: el
};
}
parts.push(previousPart);
previousPart = null;
}
});
return parts;
}
/**
True if the element is a part
@param el
@return {Boolean}
*/
function isPartNode(el) {
return SELECTOR_PART.indexOf(el.name) !== -1;
}
/**
Parse the title of a part element
@param el
@param {cheerio.DOM} $
@return {String}
*/
function getPartTitle(el, $) {
return $(el).text().trim();
}
/**
Parse an HTML content into a tree of articles/parts
@param {String} html
@return {Object}
*/
function parseSummary(html) {
var $ = dom.parse(html);
var $root = dom.cleanup(dom.root($), $);
var parts = findParts($root, $);
// Parse each list
debugger;
var parsedParts = [];
var part;
for (var i = 0; i < parts.length; ++i) {
part = parts[i];
parsedParts.push({
title: part.title,
articles: parseList($(part.list), $)
});
}
return {
parts: parsedParts
};
}
module.exports = parseSummary;
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