`fga --version` should return the version of the OpenFGA server

[aaguiarz]

If the CLI is configured to use an OpenFGA server, the fga --version command should also return the server version.

If the OpenFGA server does not expose that endpoint for some reason, it should display unknown

$ fga --version

fga CLI version v`0.2.6` (commit: `dc4e39648ec5b626fc5c44c4f9f77a1e15806ab7`, date: `2024-02-28T12:47:25Z`)
openfga version v`1.5.0`

[Siddhant-K-code]

To implement this, we need a server endpoint that returns the OpenFGA server version in a JSON response. Do we have an endpoint like https://api.us1.fga.dev/version (API Url is a example taken from readme) that returns a JSON response similar to this?

{
  "version": "v1.5.0"
}

[rhamzeh]

Do we have an endpoint like https://api.us1.fga.dev/version

Not at the moment, no.

We do have a bundled in server https://github.com/openfga/cli/blob/chore/bump-deps/go.mod#L18

that we also need to print out the version for

Something like:

$ fga --version

OpenFGA CLI:
* CLI Version: `v0.2.6` (commit: `dc4e39648ec5b626fc5c44c4f9f77a1e15806ab7`, date: `2024-02-28T12:47:25Z`)
* Bundled OpenFGA Version: `v1.8.9` # parsed from go mod
* Bundled API Version: (commit: `f9709139a369`, date: `2025-01-27T10:27:26Z`) # parsed from go mod # parsed from go mod
* Remote Server: # This cannot be printed out until the server exposes it
  * URL: `http://localhost:8080`
  * Version:  `v1.5.0`

That said, I'm not sure how easy doing this is, the go mod needs to be parsed and its values made part of the build tags during the release process

WDYT @aaguiarz