<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Session;
use Illuminate\Support\Facades\Log;

class ApiService
{
    protected $baseUrl;

    public function __construct()
    {
        $this->baseUrl = config('app.api_base_url');
    }

    public function fetchData($url, $token = null)
    {
        try {
            $response = Http::withHeaders([
                'Authorization' => 'Bearer ' . ($token ?: Session::get('token', '')),
            ])->get($this->baseUrl . $url);

            if ($response->successful()) {
                return $response->json();
            } else {
                $this->handleError($response);
                return null;
            }
        } catch (\Exception $e) {
            Log::error('API Fetch Error: ' . $e->getMessage());
            Session::flash('error', 'Failed to fetch data: ' . $e->getMessage());
            return null;
        }
    }

    public function logout($token = null)
    {
        try {
            $response = Http::withHeaders([
                'Authorization' => 'Bearer ' . ($token ?: Session::get('token', '')),
            ])->get($this->baseUrl . '/logout');

            if ($response->successful()) {
                Session::forget('token');
                Session::flash('success', 'Logged out successfully.');
                return true;
            } else {
                $this->handleError($response);
                return false;
            }
        } catch (\Exception $e) {
            Log::error('Logout Error: ' . $e->getMessage());
            Session::flash('error', 'Logout failed: ' . $e->getMessage());
            return false;
        }
    }

    public function handleError($response)
    {
        $status = $response->status();

        if ($status === 401) {
            Session::forget('token');
            throw new \Exception('Session expired. Please login again.');
        } elseif ($status === 404) {
            throw new \Exception('API resource not found.');
        } else {
            throw new \Exception('API error: ' . ($response->body() ?: 'Unknown error'));
        }
    }
}