Register bitcoin: URI handler

[tsusanka]

Clicking on a bitcoin: URI should open Suite and prefill the inputs if the infromation is available. See https://developer.bitcoin.org/devguide/payment_processing.html#bitcoin-uri and BIP-21 for more details.

Registering our own trezorsuite: handler is dealt with in #991.

[tomasklim]

I created a basic flowchart that will help us to find a solution how to solve this issue.

https://miro.com/app/board/o9J_lBcHBug=/

[tomasklim]

Ideas, bugs,... to follow-up issue #4313

[tomasklim]

Info about current implementation can be found here.

Video example
Web
https://user-images.githubusercontent.com/33235762/134486746-85719580-ce5c-4f58-898c-1907823014eb.mov

Desktop
https://user-images.githubusercontent.com/33235762/134506192-7a533cf9-e6e8-4c63-8d13-f223f0d41ff1.mov

[wendys-cats]

QA NOK (WIP, results will be added to this comment)

1. Send button is disabled when autofill is applied BUG
When info from bitcoin: URI handler is autofilled, Suite does not automatically convert the coin amount into FIAT amount and fill the FIAT field, which is needed for Send button to become enabled.
Once coin amount is changed, or FIAT type is (re-)selected, Suite converts the coin amount into FIAT and enables Send button. Also, if the URI handler is in QR form, this does not seem to be an issue, even though FIAT value is not filled

URI handler text form

URI handler QR form

Info
Suite: web 21.10.0 f14989d develop
Browser: Chrome Version 94.0.4606.61 (Official Build) (64-bit)
Device: TT 2.4.2 public regular
OS: Windows 10
URI handler used: bitcoin:bc1qdf7yc02r7gxle4kn98ds5rc5pq2nutpxw54rlw?amount=0.00010484

video: https://watch.screencastify.com/v/trybQcsTp87hmW3hH6IL

2. Mozzila WEB - OK
info: 92.0 (64 bitů) a
Opening handler results in browser asking where to open it (yay!)

Opening web Suite results in dialog (yay!) and adding the site into opening options (yay!)

Removing sites/settings from Firefox results in a dialogue when site is visited again with option to add the site to settings. When site is removed from handler settings, it does not appear in pop up.

3. Chrome WEB Removing sites/settings from chrome://settings/handlers results in being unable to open the handler with the site (OK). Removed site displays a special icon on the far right side of URL bar, clicking on it opens a dialogue about adding site to URI handler settings (OK).

[STew790]

QA OK

I tried this on Linux and it works as intended in FF (93.0) as well as in Chorme. It is the same as @wendys-cats described. When I first open Suite it correctly asks if I want to add it as a Bitcoin URI handler. If I open any BTC URI link, it opens Suite and a pop-up tells me to go to Suite send form and then it fills up the send from with the info correctly (screenshot below).

Info:

• Suite version: web 21.10.1 (aa3adfa)
• Browser: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36
• OS: Linux x86_64
• Screen: 1920x1080
• Device: model T 2.4.2 regular

Screenshot

1. Click on "open in wallet"
   
2. Pop-up tells me to go to my account
   
3. When I go to my account and to send form, the pop-up shows the "Auto-fill in the form" button
   
4. When I click it, it correctly fills in the send form and I can send the tx
   

[wendys-cats]

QA OK

Windows 10
Protocol handler bitcoin: is defaultly set to open in Chrome.
Chrome web - removing/adding settings OK. Opening when site is added OK, not opening when there is no default OK. Suite/Wallet asking for permission OK.
Chrome+app - Chrome opens handler in web. If no default is set, handler is not opened (even if app is open). Needs to be re-set in Win system, but only through Microsoft Store (bleh).

Opening handler without an amount set - OK

Firefox web - removing/adding settings OK. Opening when site is added OK, not opening when there is no default OK. Suite/Wallet asking for permission OK.
Firefox+app - works OK. Also, Firefox can be set to open the handler with another app (even Chrome).

Opening handler without an amount set - OK

MacOS Big Sur
Protocol handler bitcoin: is defaultly set to open in app (if available).
App - once the app is opened, it will be set as a default. Needs to be reset via terminal.

Opening handler without an amount set - OK

Additional info:
Chrome - protocol settings chrome://settings/handlers
Firefox - protocol settings about:preferences#general