Join next Zoom Meeting

Readme.md

Swift program for getting a zoom app link from current or upcoming event in calendar.

Apple script calling the program and opening zoom.

launch_zoommtg.scpt

#!/usr/bin/osascript

set meeting to do shell script "/usr/local/bin/nextzoommtg"

if meeting = "" then
	log "No meeting"
else
	if application "Music" is running then
		tell application "Music"
			set player_state to player state
			if player_state is playing then
				log "Pausing music"
				pause
			end if
		end tell
	end if
	
	set volume output volume 100
	open location meeting
	
end if

main.swift

//
//  main.swift
//  icalswift
//
//  Created by Sergei A. Fedorov on 23.04.2020.
//  Copyright © 2020 Sergei A. Fedorov. All rights reserved.
//

import Foundation
import Foundation.NSFileHandle
import Darwin.C.stdlib
import EventKit

do {
    let store = EKEventStore()
    switch EKEventStore.authorizationStatus(for: .event) {
    case .authorized:
        NSLog("Authorized")
        break
    case .restricted:
        NSLog("Access resticted")
        exit(1)
    case .denied:
        NSLog("Access denied")
        exit(1)
    case .notDetermined:
        let group = DispatchGroup()
        group.enter()
        store.requestAccess(to: .event) { (granted: Bool, NSError) in
            if granted {
                NSLog("Granted")
            } else {
                NSLog("No access granted")
                exit(1)
            }
            group.leave()
        }
        group.wait()
        
        break

    @unknown default:
        break
    }
    let cal = Calendar.current
    
    let now = Date()
    var diff = DateComponents()
    diff.hour = -3
    let today = cal.date(byAdding: diff, to: now)
    
    diff.hour = 0
    diff.day = 1
    let tomorrow = cal.date(byAdding: diff, to: today!)
    
    diff.day = 0
    diff.minute = 5
    let soon = cal.date(byAdding: diff, to: now)
    
    let calendars = store.calendars(for: .event)
    
    let formatter = DateFormatter()
    formatter.dateStyle = .short
    formatter.timeStyle = .short
    NSLog("Events in range " + formatter.string(from: today!) + " - " + formatter.string(from: tomorrow!))
    
    let predicate: NSPredicate? = store.predicateForEvents(withStart: today!, end: tomorrow!, calendars:calendars)
    
    let events : [EKEvent] = store.events(matching: predicate!)
    var current = events.filter({ $0.startDate < soon! && now < $0.endDate})
    current.sort(by: { $0.startDate > $1.startDate })
    let re = try NSRegularExpression(pattern: #"https://(\S*zoom.us)/j/(\w+)(.*)$"#, options: [.anchorsMatchLines])
    let pwd_re = try NSRegularExpression(pattern: #"pwd=(\w+)"#, options: [])
    for event in current {
        if !event.isAllDay && (event.notes ?? "" != "") {
            let notes = event.notes!
            NSLog((event.title ?? "<no title>") + " <" + formatter.string(from: event.startDate) + ">")
            NSLog(notes)
            let range = NSRange(notes.startIndex..<notes.endIndex, in: notes)
            let match = re.firstMatch(in: notes, options: [], range: range)
            if let m = match {
                let host = notes[Range(m.range(at: 1), in: notes)!]
                let meeting_id = notes[Range(m.range(at: 2), in: notes)!]
                var zoom_url = "zoommtg://" + host + "/join?confno=" + meeting_id + "&zc=0&stype=100";
                
                let line_tail_range = Range(m.range(at: 3), in: notes)
                if let lr = line_tail_range {
                    let match = pwd_re.firstMatch(in: notes, options: [], range: NSRange(lr.lowerBound...lr.upperBound, in:notes))
                    if let pm = match {
                        zoom_url = zoom_url + "&pwd=" + notes[Range(pm.range(at: 1), in: notes)!]
                    }
                }
                print(zoom_url)
                exit(0)
            }
        }
    }
} catch {
    print(error.localizedDescription);
}