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105 lines
3.6 KiB
JavaScript
105 lines
3.6 KiB
JavaScript
const
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path = require('path'),
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md5 = require('blueimp-md5'),
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static = require('koa-static'),
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nunjucks = require('nunjucks'),
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hljs = require('hljs'),
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MarkdownIt = require('markdown-it'),
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katex = require('markdown-it-katex'),
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options = require('../options'),
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perm = require('../permission'),
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builtin = require('../model/builtin'),
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{ MIDDLEWARE } = require('../service/server'),
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{ NotFoundError } = require('../error'),
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MD5_REGEX = /^[0-9a-f]{32}$/;
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function getHash(email) {
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email = (typeof email === 'string') ? email.trim().toLowerCase() : 'unspecified';
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return email.match(MD5_REGEX) ? email : md5(email);
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}
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class Markdown extends MarkdownIt {
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constructor() {
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super({
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linkify: true,
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highlight: function (str, lang) {
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if (lang && hljs.getLanguage(lang))
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try {
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return hljs.highlight(lang, str).value;
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} catch (__) { } // eslint-disable-line no-empty
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return '';
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}
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});
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this.linkify.tlds('.py', false);
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this.use(katex);
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}
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}
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const md = new Markdown();
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class Nunjucks extends nunjucks.Environment {
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constructor() {
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super(
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new nunjucks.FileSystemLoader(path.resolve(options.template.path)),
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{ autoescape: true, trimBlocks: true }
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);
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this.addFilter('json', function (self) {
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return JSON.stringify(self);
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}, false);
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this.addFilter('assign', function (self, data) {
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return Object.assign(self, data);
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});
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this.addFilter('markdown', function (self) {
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return md.render(self);
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});
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this.addFilter('gravatar_url', function (email, size) {
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return `//gravatar.loli.net/avatar/${getHash(email)}?d=mm&s=${size}`;
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});
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this.addGlobal('static_url', str => `/${str}`);
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this.addGlobal('reverse_url', str => str);
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this.addGlobal('perm', perm);
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this.addGlobal('builtin', builtin);
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}
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}
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const env = new Nunjucks();
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MIDDLEWARE(static(path.resolve(process.cwd(), '.uibuild')));
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MIDDLEWARE(async (ctx, next) => {
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ctx.render_title = str => str;
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ctx.UIContext = {
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cdn_prefix: '/',
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url_prefix: '/'
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};
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ctx.render = async (name, context) => {
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ctx.user = ctx.state.user;
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ctx.translate = str => {
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return str.translate(ctx.state.user.language);
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};
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ctx.has_perm = perm => ctx.state.user.hasPerm(perm);
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ctx.body = await new Promise((resolve, reject) => {
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env.render(name, Object.assign(ctx.state, context, {
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handler: ctx,
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_: ctx.translate
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}), (error, res) => {
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if (error) reject(error);
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else resolve(res);
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});
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});
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ctx.response.type = 'text/html';
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};
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try {
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try {
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await next();
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if (!ctx.body) throw new NotFoundError();
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if (ctx.query.template || ctx.templateName) {
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Object.assign(ctx.body, JSON.parse(ctx.query.data || '{}'));
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await ctx.render(ctx.query.template || ctx.templateName, ctx.body);
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} else if (ctx.setRedirect) {
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ctx.response.type = 'application/octet-stream';
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ctx.redirect(ctx.setRedirect);
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}
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} catch (error) {
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if (error.toString().startsWith('Template render error')) throw error;
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await ctx.render('error.html', { error });
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}
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} catch (error) {
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await ctx.render('bsod.html', { error });
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}
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}); |