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var Q = require("q");
var _ = require("lodash");
var lunr = require('lunr');
var marked = require('marked');
var textRenderer = require('marked-text-renderer');
function Indexer() {
if(!(this instanceof Indexer)) {
return new Indexer();
}
_.bindAll(this);
// Setup lunr index
this.idx = lunr(function () {
this.ref('url');
this.field('title', { boost: 10 });
this.field('body');
});
this.renderer = textRenderer();
}
Indexer.prototype.text = function(nodes) {
// Copy section
var section = _.toArray(nodes);
// marked's Render expects this, we don't use it yet
section.links = {};
var options = _.extend({}, marked.defaults, {
renderer: this.renderer
});
return marked.parser(section, options);
};
Indexer.prototype.addSection = function(path, section) {
var url = [path, section.id].join('#');
var title = this.text(
_.filter(section, {'type': 'heading'})
);
var body = this.text(
_.omit(section, {'type': 'heading'})
);
// Add to lunr index
this.idx.add({
url: url,
title: title,
body: body,
});
};
Indexer.prototype.add = function(lexedPage, url) {
var sections = lexedPage;
_.map(sections, _.partial(this.addSection, url));
};
Indexer.prototype.dump = function() {
return JSON.stringify(this.idx);
};
// Exports
module.exports = Indexer;
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