Link token to user ids

[Chralu]

Hi @appleboy ,

here is a thought I would like to discuss...

In my experience, a recurring concern about push notifications is sending notifications to a particular user of your service.
To achieve that, you have to maintain the matching between user id and its push notification tokens.

So, to achieve that, I would need :

• a microservice to maintain the user id/push token matching
• an instance of GoRush to actually send the notifications

It would be really convenient to add that responsability to GoRush.

New API proposal

POST /api/session

creates a mapping between user id, and its tokens

{
   "user_id": "xxxxxx",
   "token": {
       "platform": 1,
       "token": "sdfsfdsf",
   } 
}

POST /api/push/session

sends notification to users

{
  "notifications": [
    {
      "user_ids": ["user_id_1", "user_id_2"],
      "message": "Hello World Users !",
      "title": "Gorush with HMS"
    },
  ]
}

Cleaning the mapping

In case of invalid tokens (expired, invalid...) we want to remove it from the session mapping.

Fortunately, when sending notifications with services like Firebase Cloud Messaging, it returns the list of invalid tokens used.

What do you think ?

[Chralu]

might be related to #756