Cannot read calendar with applescript

[noahfraiture]

Hello,

I'm trying to make a module to read the event in apple calendars starting with MEET to add a google meet link to them. However impossible to read the calendar with apple script and hammerspoon never request permissions.

local ok, result = hs.osascript.applescript([[
    tell application "Calendar"
        return count of calendars
    end tell
]])
print("OK:", ok, "Result:", result)

This request will return false and nil but it will request control permission after reset org.hammerspoon.Hammerspoon. So it ask for permission, but still fails. This command works in the script app of course.

local ok, result = hs.osascript.applescript([[
    tell application "Calendar"
        activate
        return "Hello mom"
    end tell
]])
print("OK:", ok, "Result:", result)

But this request will works ! It will focus the app and return Hello mom.

All that seems to be a permission problem that hammerspoon never ask for. The permission asked for control will not show up in "Privacy & Security" as other app like ghostty do

[noahfraiture]

Ok I tried more stuff, the first being calling via bash with

    local script = [[osascript -e '
        tell application "Calendar"
...
hs.execute(script)

This technically works but is very very slow and timeout everytime for pretty much anything more than returning the name of a calendar

My second idea was to use compiled swift. I made a swift program that works when called from the terminal ./calendar.o, with guard for access

    // Request calendar access
    var accessGranted = false
    let semaphore = DispatchSemaphore(value: 0)
    
    // Use the new method for macOS 14.0 and later
    store.requestFullAccessToEvents { granted, error in
        accessGranted = granted
        if let error = error {
            print("Error requesting access: \(error.localizedDescription)")
        }
        semaphore.signal()
    }
    semaphore.wait()
    
    guard accessGranted else {
        return "{err:\"Calendar access denied\"}"
    }

The problem being, when the program is called via hs.execute(./calendar.o), I have {err:"Calendar access denied"}.
I don't know anymore how to do

[latenitefilms]

Does Hammerspoon have Calendar access in System Settings > Privacy & Security > Calendars?

[noahfraiture]

That's the issue, it doesn't, but it never ask for

[latenitefilms]

I think Hammerspoon probably needs NSCalendarsFullAccessUsageDescription in the Info.plist. That might be enough to make the AppleScript stuff work.

If you wanted to access the Calendar in Objective-C-land, it may also need something like:

 - (void)start {
    if (nil == self.store) {
      self.store = [[EKEventStore alloc] init];
    }
    if (@available(macOS 14.0, *)) {
      [self.store requestFullAccessToEventsWithCompletion:^(BOOL granted, NSError *error) {
        [self granted:granted error:error];
       }];
    } else {
      [self.store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        [self granted:granted error:error];
      }];
    }
  }

  - (void)granted:(BOOL)granted error:(NSError *)error {
    if (granted) {
      [self fetchCalendarEvents];
    } else {
      if (nil == error) {
        error = [NSError errorWithDomain:@"AppDomain" code:1 userInfo:@{NSLocalizedDescriptionKey : @"Access was not granted."}];
      }
    }
    if (error) {
      [self presentError:error];
    }
  }