[Feature] 3pid invite

[bmarty]

As specced here

The app should:

• [x] Render the m.room.third_party_invite event in the timeline

To send invite, the app should:

• [x] Send invite to an email with /invite command
• [ ] Send invite to a Msisdn with /invite command -> We get an error 500 {"errcode":"M_UNKNOWN","error":"Internal server error"}
• [x] In the room member list, access the phone contacts to be able to invite them
• [x] by email
• [ ] by phone
• [x] by Matrix ID thanks to identity server lookup

Also:

• [x] If power level is high enough, user should be able to revoke a 3pid invite

When receiving an invite, the user click on the link and the app should:

• [ ] If the app is not installed: offer to install the app (redirect to the store?). Currently I think the riot.im web instance will be opened. The mail should propose to install the app.
• [ ] If the user is not logged in: the user should be able to create an account or to log in and see the invite once he has bound his 3pid to the account
• [ ] If the user is already logged in: the user should be able to see the invite if the 3pid is bound to his account

EDIT: First PR will handle all the checkbox above. Msisdn support is deactivated for the moment

[bmarty]

Unfortunately it requires to implement the identity server part (#607), which has not been identified as a showstopper.

[henry-nicolas]

Are there any plans for the 3pid invite by phone feature?

It feels weird when one want to invite another user by doing a contact lookup and no result pops up. On Android (phones, arguably not on tablets form factors), contacts would have their phone number fields filed in, making this feature very relevant imho.