MyFreight Assessment

How to run

Easiest way to run this project is using docker compose: docker compose up

It is possible that this will give some database connection issues on the first try, but after a couple of seconds, it should automatically reconnect.

Alternatively, it is possible to use your own mysql database, and run the code locally:

1. Import the database/entrypoint/init.sql into your own database
2. Update the .env file with the database credentials
3. Run npm ci to install all npm packages
4. Run npm run build to build the nestjs application
5. Run npm run start:prod to start the nestjs application

Receiving Tracking information

When receiving Tracking information, the following steps need to be completed to process the data

flowchart TD
    receiveTracking(["Receive Tracking"])
    findContainerAndShipment["SELECT container JOIN Shipment"]
    updateShipment[/Update shipment\]
    isArrivingSoon{{"Is arrival estimate between now and now + 24h?"}}
    hasArrived{{"Is arrival estimate <=now?"}}
    isDelayed{{Is arrival estimate > original arrival + 24h?}}
    sendNotification[/Send notification\]

    
    receiveTracking -- "`
    **Tracking data**
carrierName:**string**
destinationUnLoCode:**string**
departureDate:**string[_datetime_]**
arrivalDateEstimate:**string[_datetime_]**
containerNumber:**string**
`" -->  findContainerAndShipment
    findContainerAndShipment --> |WHERE containers.containerNumber = :trackingData.containerNumber| updateShipment
    updateShipment --> isArrivingSoon & hasArrived & isDelayed
    isDelayed -->|set delayed flag| sendNotification
    hasArrived  --> |set has arrived flag| sendNotification
    isArrivingSoon -->|set is arriving soon flag| sendNotification
    
%%    isArrivingSoon -->|yes| sendArriveSoon

Possible improvements

• Sending the actual notification, there should be a more general way to setup notifiers
• Moving some variables to config files
  • when is a shipment "arriving soon"
  • mock date
• Use the uuid package
  • was not possible since the uuid's from the sample data were invalid uuid's
• Add end-to-end tests as well
• Get shipments should be paginated
  • Could use a package like typeorm-crud
• Cleanup duplicate OpenApi decorators, perhaps consolidate them in a custom decorator