<?php

namespace App\Http\Controllers\Settings;

use App\Actions\Git\GitProviderKey;
use App\Actions\Git\GitProviderManager;
use App\Http\Controllers\Controller;
use App\Http\Requests\Settings\StoreUserGitConnectionRequest;
use App\Http\Requests\Settings\UpdateUserGitConnectionRequest;
use App\Models\UserGitConnection;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use Inertia\Inertia;
use Inertia\Response;
use Throwable;

class GitConnectionController extends Controller
{
    public function __construct(
        private readonly GitProviderManager $gitProviderManager,
    ) {}

    public function edit(Request $request): Response
    {

        return Inertia::render('settings/GitConnections', [
            'gitConnections' => $request->user()->gitConnections
                ->map(fn (UserGitConnection $gitConnection): array => [
                    'account_login' => $gitConnection->account_login,
                    'account_name' => $gitConnection->account_name,
                    'base_url' => $gitConnection->base_url,
                    'created_at' => $gitConnection->created_at?->toISOString(),
                    'id' => $gitConnection->id,
                    'provider' => $gitConnection->provider->value,
                    'provider_label' => $gitConnection->provider->label(),
                    'provider_user_id' => $gitConnection->provider_user_id,
                    'updated_at' => $gitConnection->updated_at?->toISOString(),
                    'user_id' => $gitConnection->user_id,
                ])
                ->values(),
            'status' => $request->session()->get('status'),
        ]);
    }

    public function store(StoreUserGitConnectionRequest $request): RedirectResponse
    {
        $validated = $request->validated();

        $apiToken = Arr::get($validated, 'api_token');
        $baseUrl = Arr::get($validated, 'base_url');
        $provider = GitProviderKey::from(Arr::get($validated, 'provider'));
        $user = $request->user();

        try {
            $gitProvider = $this->gitProviderManager->client($provider);
            $authenticatedUser = $gitProvider->getAuthenticatedUser(
                $baseUrl,
                $apiToken,
            );
        } catch (Throwable) {
            return back()
                ->withErrors([
                    'api_token' => ((string) config('app.name')).' could not authenticate against Gitea with this base URL and token.',
                ]);
        }

        UserGitConnection::query()->create([
            'account_login' => $authenticatedUser->login,
            'account_name' => $authenticatedUser->name,
            'api_token' => $apiToken,
            'base_url' => $baseUrl,
            'provider' => $provider,
            'provider_user_id' => $authenticatedUser->providerUserId,
            'user_id' => $user->id,
        ]);

        return to_route('git-connections.edit')
            ->with('status', 'Git connection was added.');
    }

    public function update(
        UpdateUserGitConnectionRequest $request,
        UserGitConnection $gitConnection,
    ): RedirectResponse {
        $this->abortUnlessOwner($request, $gitConnection);

        $validated = $request->validated();
        $apiToken = Arr::get($validated, 'api_token');
        $baseUrl = Arr::get($validated, 'base_url');
        $provider = GitProviderKey::from(Arr::get($validated, 'provider'));

        try {
            $gitProvider = $this->gitProviderManager->client($provider);
            $authenticatedUser = $gitProvider->getAuthenticatedUser(
                $baseUrl,
                $apiToken,
            );
        } catch (Throwable) {
            return back()
                ->withErrors([
                    'api_token' => ((string) config('app.name')).' could not authenticate against Gitea with this base URL and token.',
                ]);
        }

        $gitConnection->update([
            'account_login' => $authenticatedUser->login,
            'account_name' => $authenticatedUser->name,
            'api_token' => $apiToken,
            'base_url' => $baseUrl,
            'provider' => $provider,
            'provider_user_id' => $authenticatedUser->providerUserId,
        ]);

        return to_route('git-connections.edit')
            ->with('status', 'Git connection was updated.');
    }

    public function destroy(Request $request, UserGitConnection $gitConnection): RedirectResponse
    {
        $this->abortUnlessOwner($request, $gitConnection);

        $label = "{$gitConnection->account_login} @ {$gitConnection->base_url}";

        $gitConnection->delete();

        return to_route('git-connections.edit')
            ->with('status', "{$label} was removed.");
    }

    private function abortUnlessOwner(Request $request, UserGitConnection $gitConnection): void
    {
        $user = $request->user();
        abort_unless($gitConnection->user_id === $user->id, 403);
    }
}