import $ = require('cheerio'); import request = require('request'); // tslint:disable-next-line:no-var-requires const package_json = require('../package.json'); const repo_name = package_json.name; const repo_author = package_json.author; const uncategorized = 'Uncategorized'; const api_url = 'https://api.github.com/emojis'; const sheet_url = 'http://www.emoji-cheat-sheet.com'; const travis_repo_url = `https://travis-ci.org/${repo_author}/${repo_name}`; const travis_badge_url = `https://travis-ci.org/${repo_author}/${repo_name}.svg?branch=master`; const url_descriptions = [ ['GitHub Emoji API', api_url], ['Emoji Cheat Sheet', sheet_url], ].map(([site_name, site_url]) => `[${site_name}](${site_url})`).join(' and '); // tslint:disable-next-line:max-line-length const description = `This cheat sheet is automatically generated from ${url_descriptions}`; const toc_name = 'Table of Contents'; const top_name = 'top'; const top_href = '#table-of-contents'; const column_divisions = 2; type Url = string; export interface Urls { [site_name: string]: Url; } export interface EmojiTable { [category: string]: string[]; } export async function create_cheat_sheet() { const api_html = await get_html(api_url); const sheet_html = await get_html(sheet_url); const api_emojis = Object.keys(JSON.parse(api_html)); const emoji_table: EmojiTable = {}; const $html = $.load(sheet_html).root(); $html.find('h2').each((_outer_index, category_element) => { const emojis: string[] = []; const category = $(category_element).text(); $html.find(`#emoji-${category.toLowerCase()} li .name`).each((_inner_index, emoji_element) => { const emoji = $(emoji_element).text(); const index = api_emojis.indexOf(emoji); if (index !== -1) { api_emojis.splice(index, 1); emojis.push(emoji); } }); emoji_table[category] = emojis; }); // istanbul ignore next if (api_emojis.length > 0) { emoji_table[uncategorized] = api_emojis; } return create_table(emoji_table); } function create_table(emoji_table: EmojiTable) { const categories = Object.keys(emoji_table); return format(` # ${repo_name} [![build](${travis_badge_url})](${travis_repo_url}) ${description} ## ${toc_name} ${categories.map(category => `- [${category}](#${category.toLowerCase()})`).join('\n')} ${ categories.map(category => { const emojis = emoji_table[category]; return format(` ### ${category} ${create_table_head()} ${create_table_content(emojis)} `); }).join(('\n').repeat(2)) } `); } function create_table_content(emojis: string[]) { let table_content = ''; for (let i = 0; i < emojis.length; i += column_divisions) { const row_emojis = emojis.slice(i, i + column_divisions); while (row_emojis.length < column_divisions) { row_emojis.push(''); } table_content += `${format(` | [${top_name}](${top_href}) |${ row_emojis.map( emoji => emoji.length !== 0 ? ` :${emoji}: | \`:${emoji}:\` ` : ' | ', ).join(' | ') }| `)}\n`; } return table_content; } function create_table_head() { return format(` | |${(' ico | emoji |').repeat(column_divisions)} | - |${(' --- | ----- |').repeat(column_divisions)} `); } function format(str: string) { return str.trim().replace(/^ +/mg, ''); } async function get_html(url: string) { return new Promise((resolve, reject) => { const options = {url}; if (url === api_url) { Object.assign(options, { headers: {'User-Agent': 'https://github.com/ikatyang/emoji-cheat-sheet'}, }); } request.get(options, (error, response, html) => { // istanbul ignore next if (!error && response.statusCode === 200) { resolve(html); } else { const error_message = Boolean(error) ? error : `Unexpected response status code: ${response.statusCode}`; reject(error_message); } }); }); }