"use strict";
const bent = require("bent");
const getJSON = bent("json");
const { encode } = require("html-entities");
const cleanBaseURL = require("clean-base-url");
const path = require("path");
const fs = require("fs");
const IGNORE_PATHS = [
/\/ember-cli-live-reload\.js$/,
/\/session\/[^\/]+\/become$/,
];
function htmlTag(buffer, bootstrap) {
let classList = "";
if (bootstrap.html_classes) {
classList = ` class="${bootstrap.html_classes}"`;
}
buffer.push(``);
}
function head(buffer, bootstrap) {
if (bootstrap.csrf_token) {
buffer.push(``);
buffer.push(``);
}
if (bootstrap.theme_ids) {
buffer.push(
``
);
}
let setupData = "";
Object.keys(bootstrap.setup_data).forEach((sd) => {
let val = bootstrap.setup_data[sd];
if (val) {
if (Array.isArray(val)) {
val = JSON.stringify(val);
} else {
val = val.toString();
}
setupData += ` data-${sd.replace(/\_/g, "-")}="${encode(val)}"`;
}
});
buffer.push(``);
(bootstrap.stylesheets || []).forEach((s) => {
let attrs = [];
if (s.media) {
attrs.push(`media="${s.media}"`);
}
if (s.target) {
attrs.push(`data-target="${s.target}"`);
}
if (s.theme_id) {
attrs.push(`data-theme-id="${s.theme_id}"`);
}
let link = `\n`;
buffer.push(link);
});
bootstrap.plugin_js.forEach((src) =>
buffer.push(``)
);
buffer.push(bootstrap.theme_html.translations);
buffer.push(bootstrap.theme_html.js);
buffer.push(bootstrap.theme_html.head_tag);
buffer.push(bootstrap.html.before_head_close);
}
function localeScript(buffer, bootstrap) {
buffer.push(``);
}
function beforeScriptLoad(buffer, bootstrap) {
buffer.push(bootstrap.html.before_script_load);
localeScript(buffer, bootstrap);
(bootstrap.extra_locales || []).forEach((l) =>
buffer.push(``)
);
}
function body(buffer, bootstrap) {
buffer.push(bootstrap.theme_html.header);
buffer.push(bootstrap.html.header);
}
function bodyFooter(buffer, bootstrap) {
buffer.push(bootstrap.theme_html.body_tag);
buffer.push(bootstrap.html.before_body_close);
}
function hiddenLoginForm(buffer, bootstrap) {
if (!bootstrap.preloaded.currentUser) {
buffer.push(`
`);
}
}
function preloaded(buffer, bootstrap) {
buffer.push(
``
);
}
const BUILDERS = {
"html-tag": htmlTag,
"before-script-load": beforeScriptLoad,
head: head,
body: body,
"hidden-login-form": hiddenLoginForm,
preloaded: preloaded,
"body-footer": bodyFooter,
"locale-script": localeScript,
};
function replaceIn(bootstrap, template, id) {
let buffer = [];
BUILDERS[id](buffer, bootstrap);
let contents = buffer.filter((b) => b && b.length > 0).join("\n");
return template.replace(``, contents);
}
function applyBootstrap(bootstrap, template) {
Object.keys(BUILDERS).forEach((id) => {
template = replaceIn(bootstrap, template, id);
});
return template;
}
function decorateIndex(assetPath, baseUrl, headers) {
// eslint-disable-next-line
return new Promise((resolve, reject) => {
fs.readFile(
path.join(process.cwd(), "dist", assetPath),
"utf8",
(err, template) => {
getJSON(`${baseUrl}/bootstrap.json`, null, headers)
.then((json) => {
resolve(applyBootstrap(json.bootstrap, template));
})
.catch(() => {
reject(`Could not get ${baseUrl}/bootstrap.json`);
});
}
);
});
}
module.exports = {
name: require("./package").name,
isDevelopingAddon() {
return true;
},
serverMiddleware(config) {
let proxy = config.options.proxy;
let app = config.app;
let options = config.options;
let watcher = options.watcher;
let baseURL =
options.rootURL === ""
? "/"
: cleanBaseURL(options.rootURL || options.baseURL);
app.use(async (req, res, next) => {
try {
const results = await watcher;
if (this.shouldHandleRequest(req, options)) {
let assetPath = req.path.slice(baseURL.length);
let isFile = false;
try {
isFile = fs
.statSync(path.join(results.directory, assetPath))
.isFile();
} catch (err) {
/* ignore */
}
if (!isFile) {
assetPath = "index.html";
}
if (assetPath.endsWith("index.html")) {
let template;
try {
template = await decorateIndex(assetPath, proxy, req.headers);
} catch (e) {
template = `
Discourse Build Error
${e.toString()}
`;
}
return res.send(template);
}
}
} finally {
next();
}
});
},
shouldHandleRequest(req, options) {
let acceptHeaders = req.headers.accept || [];
let hasHTMLHeader = acceptHeaders.indexOf("text/html") !== -1;
if (req.method !== "GET") {
return false;
}
if (!hasHTMLHeader) {
return false;
}
if (IGNORE_PATHS.some((ip) => ip.test(req.path))) {
return false;
}
let baseURL =
options.rootURL === ""
? "/"
: cleanBaseURL(options.rootURL || options.baseURL);
let baseURLRegexp = new RegExp(`^${baseURL}`);
return baseURLRegexp.test(req.path);
},
};