Add support for ics.acmcsuf.com

[diamondburned]

This commit adds support for parsing ICS calendars using the ICal standard format in addition to the existing Google Calendar API.

The new commit also contains a hard-coded array of ICS calendar links, currently only containing ics.acmcsuf.com. In the future, more links may be added to this.

A hard-coded array was chosen over an environment variable because environment variables cannot express arrays as easily. That said, if there are any private calendars, then they can be used as such:

const KnownCalendars = [
  "public1.ics",
  "public2.ics",
  SECRET_ICS_X,
  SECRET_ICS_Y,
]

In the future, if ics.acmcsuf.com is proven to work well enough, the Google Calendar API could even be completely phased out.

NOTE: It is worth pointing out that this ICS code currently does not support recurring events. This is because ics.acmcsuf.com doesn't do recurring events.

[netlify[bot]]

✅ Deploy Preview for acmcsuf ready!

Name	Link
🔨 Latest commit
🔍 Latest deploy log	https://app.netlify.com/sites/acmcsuf/deploys/652d6f3e3286ce3cb7f2b711
😎 Deploy Preview	https://deploy-preview-912--acmcsuf.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[diamondburned]

This PR also adds typescript-language-server as a devDependency. If you don't want this, feel free to cherry-pick the commit out and consider this PR manually merged.

[diamondburned]

Yes. #646 shouldn't really happen since we have the cache, but also ics.acmcsuf.com is much faster than Google Calendar at serving ICS and also does internal caching for this.

[diamondburned]

Closing this PR, since the team doesn't seem to be interested in merging/reviewing it.

[EthanThatOneKid]

Closing this PR, since the team doesn't seem to be interested in merging/reviewing it.

Apologies for not getting around to posting an official review on this PR. I recall testing this PR locally a while ago and it did not seem to be ready/working.

cc @diamondburned

[diamondburned]

it did not seem to be ready/working.

What was the error?

[EthanThatOneKid]

What was the error?

@diamondburned, I don’t recall if there was an error. I actually remember noticing no events were showing despite having events on Discord. I also DM’d you on Discord about this in mid-October.

[diamondburned]

You should give it a try again. I think the bot might've left the server randomly, but it's back now.

I don't remember you replying to me after sending my messages about it.