entirely refactor src/modules/requests.js

Its now been split into 2, requests.js and releases.js, the latter
simply gets relevant info from GitHub release pages. The prior however
gives simple functions for doing `GET` requests, and caching the result,
and then transparently it'll use that cache when you request it next
time. On top of this, some requests made by the renderer will now also
use this, and this in turn ends up making loading the mod browser much
faster. As instead of having to request the list of packages from
Thunderstore, we can simply load the result of an old request.

The current lifetime of the cache is 5 minutes, however this can also
easily be adjusted.

This also moves the cached requests away from
<cache_folder>/viper-requests.json, and over to
<cache_folder>/Viper/cached-requests.json

1 files changed, 80 insertions, 0 deletions

diff --git a/src/modules/releases.js b/src/modules/releases.js
new file mode 100644
index 0000000..c071970
--- /dev/null
+++ b/src/modules/releases.js
@@ -0,0 +1,80 @@
+const requests = require("./requests");
+
+let releases = {
+	notes: {},
+	latest: {}
+}
+
+// gets and returns the release notes of a GitHub repo
+async function github_releases(repo) {
+	let request = false;
+
+	// attempt to perform the request, while caching it
+	try {
+		request = JSON.parse(await requests.get(
+			"api.github.com", `/repos/${repo}/releases`,
+			"release-notes-" + repo
+		))
+	}catch(err) {
+		// request or parsing failed, return `false`
+		return false;
+	}
+
+	// request is somehow falsy, return `false`
+	if (! request) {
+		return false;
+	}
+
+	// return the actual request as parsed JSON
+	return request;
+}
+
+// returns release notes for Viper
+releases.notes.viper = async () => {
+	return await github_releases("0neGal/viper");
+}
+
+// returns release notes for Northstar
+releases.notes.northstar = async () => {
+	return await github_releases("R2Northstar/Northstar");
+}
+
+// gets and returns some details of the latest release of a GitHub repo
+async function github_latest(repo) {
+	let request = false;
+
+	// attempt to perform the request, while caching it
+	try {
+		request = JSON.parse(await requests.get(
+			"api.github.com", `/repos/${repo}/releases/latest`,
+			"latest-release-" + repo
+		))
+	}catch(err) {
+		// request or parsing failed, return `false`
+		return false;
+	}
+
+	// request is somehow falsy, return `false`
+	if (! request) {
+		return false;
+	}
+
+	// return the actual request as parsed JSON
+	return {
+		notes: request.body,
+		version: request.tag_name,
+		download_link: request.assets[0].browser_download_url
+	}
+}
+
+// returns latest release for Viper
+releases.latest.viper = async () => {
+	return await github_latest("0neGal/viper");
+}
+
+// returns latest release for Northstar
+releases.latest.northstar = async () => {
+	return await github_latest("R2Northstar/Northstar");
+}
+
+module.exports = releases;