Recalculate price on task cancellation

[vladimir-8]

• Recalculate order price on task cancellation
• Introduce 'order:price_updated' event
• Don't modify manually applied prices
• Don't apply to foodtech and B2C delivery orders
• Handle per distance recalculation: Exclude cancelled tasks from a route (distance, duration, polyline)
• Handle per packages recalculation: Exclude cancelled tasks from the sum of packages and weight
• Don't assign cancelled tasks to a messenger
• Display 'order:price_updated' in the order history

[r0xsh]

Maybe the type check should be performed on the TotalPrice component, it'll make OrderHistory.tsx cleaner and TotalPrice more error resilient

[vladimir-8]

Well, these type checks are mostly a workaround to avoid TypeScript warnings, because event.data has type data?: Record<string, unknown>;

I think a better solution is to define types for all possible objects inside event.data (one day 😄 )

[r0xsh]

This is prone to throwing :/

• Minimalist approach: wrap this in a try/catch and notify the user that the price could not be recalculated.
• The "Yikes" way: I’ll move this into an async worker job for two reasons:
  1. The combined cancel-recalculation + route calculation can be quite long (especially the route calculation).
  2. If calculateRoute throws, I can easily retry the failed job(s).

[vladimir-8]

Done in 238cb77