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import fs from 'fs';
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import path from 'path';
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import serialize from 'serialize-javascript';
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import nunjucks from 'nunjucks';
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import * as markdown from './markdown';
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import * as misc from './misc';
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class Loader extends nunjucks.Loader {
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// eslint-disable-next-line class-methods-use-this
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getSource(name: string) {
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if (!process.env.debug) {
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if (!global.Hydro.ui.template[name]) throw new Error(`Cannot get template ${name}`);
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return {
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src: global.Hydro.ui.template[name],
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path: name,
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noCache: false,
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};
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}
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let fullpath = null;
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const base = path.join(process.cwd(), 'templates');
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const p = path.resolve(base, name);
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if (fs.existsSync(p)) fullpath = p;
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if (!fullpath) throw new Error(`Cannot get template ${name}`);
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return {
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src: fs.readFileSync(fullpath, 'utf-8'),
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path: fullpath,
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noCache: true,
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};
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}
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}
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class Nunjucks extends nunjucks.Environment {
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constructor() {
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super(new Loader(), { autoescape: true, trimBlocks: true });
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this.addFilter('json', (self) => JSON.stringify(self), false);
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this.addFilter('serialize', (self, ignoreFunction = true) => serialize(self, { ignoreFunction }));
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this.addFilter('assign', (self, data) => Object.assign(self, data));
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this.addFilter('markdown', (self, safe = true) => {
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if (safe) return markdown.safe.render(self);
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return markdown.unsafe.render(self);
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});
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this.addFilter('ansi', (self) => misc.ansiToHtml(self));
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this.addFilter('base64_encode', (s) => Buffer.from(s).toString('base64'));
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this.addFilter('bitand', (self, val) => self & val);
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}
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}
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const env = new Nunjucks();
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export async function render(name: string, state: any): Promise<string> {
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const cdnPrefix = await global.Hydro.model.system.get('server.cdn');
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return await new Promise((resolve, reject) => {
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env.render(name, {
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page_name: name.split('.')[0],
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...state,
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typeof: (o) => typeof o,
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static_url: (assetName: string) => {
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if (global.Hydro.ui.manifest[assetName]) {
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return `${cdnPrefix}${global.Hydro.ui.manifest[assetName]}`;
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}
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return `${cdnPrefix}${assetName}`;
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},
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datetimeSpan: misc.datetimeSpan,
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paginate: misc.paginate,
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perm: global.Hydro.model.builtin.PERM,
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PRIV: global.Hydro.model.builtin.PRIV,
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STATUS: global.Hydro.model.builtin.STATUS,
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size: misc.size,
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gravatar: misc.gravatar,
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model: global.Hydro.model,
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Context: global.Hydro.ui,
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isIE: (str: string) => str.includes('MSIE') || str.includes('rv:11.0'),
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}, (err, res) => {
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if (err) reject(err);
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else resolve(res);
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});
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});
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}
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global.Hydro.lib.template = { render };
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