<?php

namespace App\Http\Controllers\OAuth;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\Validation\Rule;
use Laravel\Passport\Client;

class ClientController extends Controller
{
    /**
     * List the OAuth clients owned by the authenticated user.
     */
    public function index(Request $request)
    {
        return response()->json(
            $request->user()->oauthApps()->where('revoked', false)->orderByDesc('created_at')->get()
        );
    }

    /**
     * Create a new OAuth client (authorization_code+PKCE, client_credentials or password).
     */
    public function store(Request $request)
    {
        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'grant_type' => ['required', Rule::in(['authorization_code', 'client_credentials', 'password'])],
            'redirect_uris' => ['required_if:grant_type,authorization_code', 'array'],
            'redirect_uris.*' => ['url'],
            'confidential' => ['boolean'],
        ]);

        $confidential = $request->boolean('confidential', true);

        $grantTypes = match ($data['grant_type']) {
            'authorization_code' => ['authorization_code', 'refresh_token'],
            'password' => ['password', 'refresh_token'],
            'client_credentials' => ['client_credentials'],
        };

        // client_credentials always needs a secret: there is no user present to prove identity.
        if ($data['grant_type'] === 'client_credentials') {
            $confidential = true;
        }

        $client = $request->user()->oauthApps()->create([
            'name' => $data['name'],
            'secret' => $confidential ? Str::random(40) : null,
            'provider' => null,
            'redirect_uris' => $data['redirect_uris'] ?? [],
            'grant_types' => $grantTypes,
            'revoked' => false,
        ]);

        return response()->json([
            'client' => $client,
            'plain_secret' => $client->plainSecret,
        ], 201);
    }

    /**
     * Update an existing client's name/redirect URIs.
     */
    public function update(Request $request, Client $client)
    {
        abort_unless($client->owner_id === $request->user()->id, 404);

        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'redirect_uris' => ['array'],
            'redirect_uris.*' => ['url'],
        ]);

        $client->update([
            'name' => $data['name'],
            'redirect_uris' => $data['redirect_uris'] ?? $client->redirect_uris,
        ]);

        return response()->json($client);
    }

    /**
     * Revoke (soft-delete) a client and its tokens.
     */
    public function destroy(Request $request, Client $client)
    {
        abort_unless($client->owner_id === $request->user()->id, 404);

        $client->update(['revoked' => true]);
        $client->tokens()->update(['revoked' => true]);

        return response()->noContent();
    }
}