Allows to change the HTTP client in the factory

[GromNaN]

Symfony integration would be complete if the symfony/http-client could be used. Instead of duplicating the OpenAI::client() factory, I think it is more simple to allow a custom instance of Psr\Http\Client\ClientInterface. The Symfony PSR-18 client would be used.

[GromNaN]

I propose to require psr/http-client-implementation instead of a specific implementation. So that it is not necessary to exclude guzzle from projects that want to use an other implementation.

For the Laravel package, guzzle can be explicitly required to keep a smooth installation path.

[nicolas-grekas]

this should also require "php-http/discovery": "^1.15" so that such an implementation is installed automatically (+ the plugin should be disabled as such since we don't need it in for testing this:

    "config": {
        "allow-plugins": {
            "php-http/discovery": false
        }
    },

[nicolas-grekas]

oh, and this now misses require guzzlehttp/psr7 explicitly since it was a transitive deps but isn't anymore (expect in dev)

[GromNaN]

If guzzle is required by the laravel package, can we skip the composer plugin?

[nicolas-grekas]

then the plugin will do nothing 🤷 if you fear composer asking for enabling the plugin, it's already whitelisted by both laravel and symfony, and it's anyway still better than composer failing to install because of a missing implementation package.
But you might prefer going with ^1.14 so that this doesn't conflict with sentry when it's installed.

[GromNaN]

Thanks for your review @nicolas-grekas. I hope maintainers will like this framework-agnostic implementation.

[nicolas-grekas]

LGTM on my side thanks.

[gehrisandro]

Completed in #75

Thanks to @nicolas-grekas @GromNaN for your help and your valuable feedback!