pinclub/pinclub

/*!
 * nodeclub - common/render_helpers.js
 * Copyright(c) 2013 fengmk2 <fengmk2@gmail.com>
 * MIT Licensed
 */

"use strict";

/**
 * Module dependencies.
 */

var MarkdownIt = require('markdown-it');
var _ = require('lodash');
var config = require('../config');
var validator = require('validator');
var jsxss = require('xss');
var multiline = require('multiline');

// Set default options
var md = new MarkdownIt();

md.set({
    html: false,        // Enable HTML tags in source
    xhtmlOut: false,        // Use '/' to close single tags (<br />)
    breaks: false,        // Convert '\n' in paragraphs into <br>
    linkify: true,        // Autoconvert URL-like text to links
    typographer: true,        // Enable smartypants and other sweet transforms
});

md.renderer.rules.fence = function (tokens, idx) {
    var token = tokens[idx];
    var language = token.info && ('language-' + token.info) || '';
    language = validator.escape(language);

    return '<pre class="prettyprint ' + language + '">' +
        '<code>' + validator.escape(token.content) + '</code>' +
        '</pre>';
};

md.renderer.rules.code_block = function (tokens, idx /*, options*/) {
    var token = tokens[idx];

    return '<pre class="prettyprint">' +
        '<code>' + validator.escape(token.content) + '</code>' +
        '</pre>';
};

var myxss = new jsxss.FilterXSS({
    onIgnoreTagAttr: function (tag, name, value, isWhiteAttr) {
        // 让 prettyprint 可以工作
        if (tag === 'pre' && name === 'class') {
            return name + '="' + jsxss.escapeAttrValue(value) + '"';
        }
    }
});

exports.markdown = function (text) {
    return '<div class="markdown-text">' + myxss.process(md.render(text || '')) + '</div>';
};

exports.escapeSignature = function (signature) {
    return signature.split('\n').map(function (p) {
        return _.escape(p);
    }).join('<br>');
};

exports.staticFile = function (filePath) {
    if (filePath.indexOf('http') === 0 || filePath.indexOf('//') === 0) {
        return filePath;
    }
    return config.site_static_host + filePath;
};

exports.tabName = function (tab) {
    var pair = _.find(config.tabs, function (pair) {
        return pair[0] === tab;
    });
    if (pair) {
        return pair[1];
    }
};

exports.proxy = function (url) {
    return url;
    // 当 google 和 github 封锁严重时，则需要通过服务器代理访问它们的静态资源
    // return '/agent?url=' + encodeURIComponent(url);
};

exports.avatarPath = function (avatar, size, type) {
    if (!avatar || !size) {
        return avatar;
    }
    let file_path = '';
    if (config.qn_access && config.qn_access.secretKey !== 'your secret key') {
        file_path = avatar + '_' + size;
    } else if (avatar.indexOf('githubusercontent.com') > -1 || avatar.indexOf('gravatar.com') > -1) {
        file_path = avatar;
    } else {
        var extname = avatar.substring(avatar.lastIndexOf('.') + 1);
        var path = avatar.substring(0, avatar.lastIndexOf('.'));
        file_path = path + '_' + size + '.' + extname;
    }
    // if (type == 'local') {
    //     let extname = avatar.substring(avatar.lastIndexOf('.') + 1);
    //     let path = avatar.substring(0, avatar.lastIndexOf('.'));
    //     file_path = path + '_' + size + '.' + extname;
    // } else {
    //     if (config.qn_access && config.qn_access.secretKey !== 'your secret key') {
    //         file_path = avatar + '_' + size;
    //     } else {
    //         let extname = avatar.substring(avatar.lastIndexOf('.') + 1);
    //         let path = avatar.substring(0, avatar.lastIndexOf('.'));
    //         file_path = path + '_' + size + '.' + extname;
    //     }
    // }

    return file_path;
};

// 为了在 view 中使用
exports._ = _;
exports.multiline = multiline;