Update Badge number for mobile application correctly

[hoangdat]

Description

• Right now, badge number is set by the system, we don't have any logic to update it correctly.
• User concerns about this number, even he read all emails, number still show.

DoD:

• Update number with a consistent logic (But, what logic?)
• Update correct number if user read email from other client devices

Cf: https://github.com/Yash18-hub/CISD-GES/issues/108

So, what we will display for this? unread of Inbox? or unread of all folders? @chibenwa

[chibenwa]

What does GMAil do?

or unread of all folders?

Nope

unread of Inbox?

Nope

What they do is the number of unread email in my INBOX, arrived since the last time I opened the app.

[tddang-linagora]

• Clear badge number and all notifications on open app (from background/terminated)
• On notification come, try to get current number of unread emails in "inbox" update badge number to "EmailDelivery" number of emails
  • If succeed, update badge number
  • If fail, keep badge number as is

[chibenwa]

Clear badge number and all notifications on open app (from background/terminated)

Ok yes

On notification come, try to get current number of unread emails in "inbox"

No. If i have 23428 unread mail in m'y inbox don't. WE do not care about old mails for this counter. Let's only count email received in the inbox when the background.

Simply count the number of EmailDelivery push notifications when app is in background. Simple...

[tddang-linagora]

Simply count the number of EmailDelivery push notifications when app is in background.

Updated