Add QR API endpoint for Telegram auth and notifications #1246
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umputun
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umputun
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Jan 31, 2022
Telegram authentication requires you to open a chat on the phone. It's convenient to have a QR code for the case when you want to log in on the computer but have Telegram only on your phone and would be able to scan the QR instead of copy-pasting the link from the computer to the phone any other way. Originally we thought of generating QR on the client but found backend-generated QR a better alternative because we avoid adding one more JavaScript dependency to the frontend that way.
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Telegram authentication requires you to open a chat on the phone. It's convenient to have a QR code for the case when you want to log in on the computer but have Telegram only on your phone and would be able to scan the QR instead of copy-pasting the link from the computer to the phone any other way. Generating QR codes restricted to strings starting with
https://t.me/Pre-requisite for #830 and #707 as in #1235 we discovered that it was discovered that generating QR on the frontend is rather expensive in terms of transferred data and increasing amount of JS code in the project, so we would just generate the QR and transfer on the backend. Server-side rendering is the future.