<?php

namespace App\Controllers;

use App\Core\Controller;
use App\Services\ApkService;

class HomeController extends Controller {
    protected $apkService;

    public function __construct() {
        $this->apkService = new ApkService();
    }

    public function index() {
        $db = db_pdo();
        $category = $_GET['category'] ?? null;
        
        // Store global referral code if present
        if (isset($_GET['ref'])) {
            $_SESSION['global_ref'] = $_GET['ref'];
        }

        $sql = "SELECT * FROM apks WHERE status = 'published'";
        $params = [];
        
        if ($category) {
            $sql .= " AND category_id = (SELECT id FROM categories WHERE slug = ?)";
            $params[] = $category;
        }
        
        $sql .= " ORDER BY display_order ASC, created_at DESC LIMIT 12";
        
        $stmt = $db->prepare($sql);
        $stmt->execute($params);
        $apks = $stmt->fetchAll();
        
        return $this->view('home', [
            'apks' => $apks,
            'title' => get_setting('site_name', 'ApkNusa') . ' - Professional APK Download Portal'
        ]);
    }

    public function apkDetail($params) {
        $slug = $params['slug'];
        $db = db_pdo();
        $stmt = $db->prepare("SELECT * FROM apks WHERE slug = ?");
        $stmt->execute([$slug]);
        $apk = $stmt->fetch();

        if (!$apk) {
            $this->redirect('/');
        }

        // Store referral code if present specifically for this APK
        if (isset($_GET['ref'])) {
            $_SESSION['ref_download_' . $apk['id']] = $_GET['ref'];
        }

        $this->view('apk_detail', [
            'apk' => $apk,
            'title' => 'Download ' . $apk['title'] . ' ' . $apk['version'] . ' - ' . get_setting('site_name', 'ApkNusa'),
            'meta_description' => 'Download ' . $apk['title'] . ' ' . $apk['version'] . ' APK for free. ' . substr(strip_tags($apk['description']), 0, 150) . '...',
            'meta_keywords' => $apk['title'] . ', ' . $apk['title'] . ' apk, download ' . $apk['title']
        ]);
    }

    public function download($params) {
        $slug = $params['slug'];
        $db = db_pdo();
        $stmt = $db->prepare("SELECT * FROM apks WHERE slug = ?");
        $stmt->execute([$slug]);
        $apk = $stmt->fetch();

        if (!$apk) {
            $this->redirect('/');
        }

        // Check for referral earnings
        // Try specific APK referral first, then global referral
        $ref_code = $_SESSION['ref_download_' . $apk['id']] ?? ($_SESSION['global_ref'] ?? null);
        
        if ($ref_code) {
            $stmt = $db->prepare("SELECT id FROM users WHERE referral_code = ?");
            $stmt->execute([$ref_code]);
            $referrer = $stmt->fetch();

            if ($referrer) {
                $referrer_id = $referrer['id'];
                $ip = $_SERVER['REMOTE_ADDR'];

                // Check if this IP already earned for this APK today (prevent abuse)
                $stmt = $db->prepare("SELECT id FROM referral_downloads WHERE referrer_id = ? AND apk_id = ? AND ip_address = ? AND created_at > DATE_SUB(NOW(), INTERVAL 1 DAY)");
                $stmt->execute([$referrer_id, $apk['id'], $ip]);
                
                if (!$stmt->fetch()) {
                    // Credit 500 IDR
                    $stmt = $db->prepare("UPDATE users SET balance = balance + 500 WHERE id = ?");
                    $stmt->execute([$referrer_id]);

                    // Log download
                    $stmt = $db->prepare("INSERT INTO referral_downloads (referrer_id, apk_id, ip_address, amount) VALUES (?, ?, ?, 500)");
                    $stmt->execute([$referrer_id, $apk['id'], $ip]);
                }
            }
            // Clear session specific to this APK, but maybe keep global_ref?
            // The user might download other APKs too.
            unset($_SESSION['ref_download_' . $apk['id']]);
        }

        // Increment total downloads
        $stmt = $db->prepare("UPDATE apks SET total_downloads = total_downloads + 1 WHERE id = ?");
        $stmt->execute([$apk['id']]);

        // Redirect to actual file
        $this->redirect($apk['download_url']);
    }
}