This PR pertains to the client-side validation of the Website input on user, repo, and org profiles. #12962 extends `[service].VALID_SITE_URL_SCHEMES` to cover Website fields on repo and org profiles, where before that config key only applied to the one on user profiles. If that change merges, it will then be possible to construct an HTML [`pattern`](https://developer.mozilla.org/docs/Web/HTML/Reference/Elements/input#pattern) attribute for general use on any Website form input that the server validates this way, thus enabling browsers to catch errors early relating to URL scheme confusion.
This PR (1) introduces such a `pattern` attribute, and (2) adds a new UI note to make clear to users which URL schemes are permitted. This change helps explain the browser's otherwise cryptic error messages regarding pattern mismatch, while also letting users know what URI schemes the Forgejo instance supports as Website links (e.g. gemini:// URLs).
This MUST NOT merge before #12962. To do so would introduce a regression wherein the UI may suggest and validate a different set of allowed URL schemes than the server actually permits.
See also #5519
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12991
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Turns out this was a one-line fix for each affected field (change the binding from `ValidUrl` to `ValidSiteUrl`), but the tests are rather verbose. The tests are, however, each a simple flow of Create Thing > Try HTTP Website > Try Different Website (notice failure) > Try Different Website With New Config (notice success). I wrote this PR by adding failing tests first, then making the change, for each affected field.
Not sure if this should be "feat:" or "fix:" tbh. I figured "fix:" for this PR since IMO the expected behavior is for `VALID_SITE_URL_SCHEMES` to apply in each of these cases, not only for user profiles via the UI form. (Later changed to "feat:" at @limiting-factor's suggestion, based on the observation that this change extends documented behavior.)
This PR deals with the server-side validation only. #12991 covers client-side validation (deriving a `pattern` attribute from `VALID_SITE_URL_SCHEMES`, etc.)
Closes#5519
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12962
Reviewed-by: limiting-factor <limiting-factor@noreply.codeberg.org>
