Publisher Worker Queue: DestinationSet

[AndyTWF]

Implement the following worker from android:

• DestinationSet
• (and the publisher method: setDestination)

This worker sets the publisher's estimated arrival time based on the current time + the expected route duration.

This work is posted by the publisher when the destination is set (setDestination in android's publisher). We kind of have that method in Swift, but it's a bit spread out, so it may be worth a refactor.

The setDestination method on the publisher:

• Takes two arguments: the destination and the publisher properties.
• If there is no current publisher location set on the publisher, add a raw location command (see https://github.com/ably/ably-asset-tracking-swift/issues/542) to be executed when a raw location is received that sets the destination.
• Otherwise, remove the current destination of the publisher and set it to the destination provided to the method. Mapbox is then instructed to set a route to that destination and, on success DestinationSet work is posted.

This method is called by the following workers:

• ChangeRoutingProfile
• SetActiveTrackable

When looking into this, we should also investigate how to “set a route” on mapbox, as this is something we’re doing in Android but don’t appear to be doing in iOS. We’re adding some extra buffer to our estimations to account for this.

[sync-by-unito[bot]]

➤ Automation for Jira commented:

The link to the corresponding Jira issue is https://ably.atlassian.net/browse/SDK-3380