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Viewing: gallery.php

<?php

include '../components/connect.php';

session_start();

$admin_id = $_SESSION['admin_id'] ?? null;

if(!$admin_id){
   header('location:admin_login.php');
   exit();
}

$message = [];

$galleryDir = realpath(__DIR__ . '/../assets/img/galeria');
if($galleryDir === false || strpos($galleryDir, realpath(__DIR__ . '/..')) !== 0){
   $message[] = 'No se pudo acceder al directorio de la galería.';
} else {
   if(!is_dir($galleryDir)){
      mkdir($galleryDir, 0775, true);
   }
}

function gallery_generate_unique_filename(string $originalName): string {
   $extension = strtolower(pathinfo($originalName, PATHINFO_EXTENSION));
   $base = strtolower(pathinfo($originalName, PATHINFO_FILENAME));
   $base = preg_replace('/[^a-z0-9]+/i', '-', $base) ?: 'galeria';
   $unique = uniqid($base . '-', true);
   return $extension ? $unique . '.' . $extension : $unique;
}

$allowedExtensions = ['jpg','jpeg','png','webp','gif','avif'];
$maxFileSize = 20 * 1024 * 1024; // 20MB

if(isset($_POST['add_image']) && $galleryDir){
   if(!isset($_FILES['gallery_image']) || $_FILES['gallery_image']['error'] !== UPLOAD_ERR_OK){
      $message[] = 'Selecciona una imagen válida para subir.';
   } else {
      $file = $_FILES['gallery_image'];
      $extension = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));

      if(!in_array($extension, $allowedExtensions, true)){
         $message[] = 'Formato no permitido. Usa JPG, PNG, WEBP, GIF o AVIF.';
      } elseif($file['size'] > $maxFileSize){
         $message[] = 'La imagen supera el tamaño máximo (5 MB).';
      } else {
         $uniqueName = gallery_generate_unique_filename($file['name']);
         $targetPath = $galleryDir . DIRECTORY_SEPARATOR . $uniqueName;

         if(move_uploaded_file($file['tmp_name'], $targetPath)){
            $message[] = 'Imagen agregada a la galería.';
         } else {
            $message[] = 'No se pudo guardar la imagen.';
         }
      }
   }
}

if(isset($_POST['delete_image']) && $galleryDir){
   $imageName = isset($_POST['image_name']) ? basename($_POST['image_name']) : '';
   if($imageName){
      $targetPath = $galleryDir . DIRECTORY_SEPARATOR . $imageName;
      $realTarget = realpath($targetPath);
      if($realTarget && strpos($realTarget, $galleryDir) === 0 && file_exists($realTarget)){
         if(unlink($realTarget)){
            $_SESSION['gallery_flash'][] = 'Imagen eliminada de la galería.';
         } else {
            $_SESSION['gallery_flash'][] = 'No se pudo eliminar la imagen.';
         }
      } else {
         $_SESSION['gallery_flash'][] = 'Imagen no válida.';
      }
   }

   header('Location: gallery.php');
   exit();
}

$galleryItems = [];
if($galleryDir && is_dir($galleryDir)){
   $files = glob($galleryDir . DIRECTORY_SEPARATOR . '*.{jpg,jpeg,png,webp,gif,avif,JPG,JPEG,PNG,WEBP,GIF,AVIF}', GLOB_BRACE);
   foreach($files as $path){
      if(!is_file($path)) continue;
      $galleryItems[] = [
         'name' => basename($path),
         'path' => $path,
         'url' => '../assets/img/galeria/' . basename($path),
         'size' => filesize($path),
         'mtime' => filemtime($path)
      ];
   }

   usort($galleryItems, function($a, $b){
      return $b['mtime'] <=> $a['mtime'];
   });
}

$pageMessages = [];
if(isset($_SESSION['gallery_flash']) && is_array($_SESSION['gallery_flash'])){
   $pageMessages = array_merge($pageMessages, $_SESSION['gallery_flash']);
   unset($_SESSION['gallery_flash']);
}
if(is_array($message) && !empty($message)){
   $pageMessages = array_merge($pageMessages, $message);
}
$message = [];

?>
<!DOCTYPE html>
<html lang="es">
<head>
   <meta charset="UTF-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Administrar Galería</title>
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
   <link rel="icon" href="../images/favicon.png" type="image/x-icon">
    <link rel="stylesheet" href="../css/admin_style.css">
   <style>
      .gallery-wrapper {
         padding: 2rem 1.5rem 3rem;
         max-width: 1200px;
         margin: 0 auto;
      }
      .upload-card {
         background: #fff;
         border-radius: 16px;
         box-shadow: 0 10px 26px rgba(0,0,0,0.08);
         padding: 1.8rem;
         margin-bottom: 2rem;
         border: 1px solid rgba(0,0,0,0.04);
      }
      .upload-card h2 {
         margin-top: 0;
         font-size: 1.4rem;
         font-weight: 700;
         color: #333;
      }
      .dropzone {
         display: flex;
         align-items: center;
         justify-content: center;
         flex-direction: column;
         border: 2px dashed rgba(179,0,0,0.25);
         border-radius: 14px;
         padding: 2.5rem 1rem;
         background: rgba(255,0,0,0.02);
         transition: border-color .2s ease, background .2s ease;
      }
      .dropzone i {
         font-size: 2.5rem;
         color: var(--color-primary, #b30000);
         margin-bottom: 1rem;
      }
      .dropzone strong {
         color: #111;
      }
      .dropzone span {
         margin-top: 0.4rem;
         color: #666;
         font-size: 0.95rem;
      }
      .dropzone input[type="file"] {
         margin-top: 1.2rem;
      }
      .btn-primary {
         margin-top: 1.2rem;
         background: linear-gradient(120deg, var(--color-primary, #b30000), #ff4d4d);
         border: none;
         color: #fff;
         padding: 0.75rem 1.8rem;
         border-radius: 999px;
         font-size: 1rem;
         font-weight: 700;
         cursor: pointer;
         transition: transform 0.2s ease, box-shadow 0.2s ease;
      }
      .btn-primary:hover {
         transform: translateY(-1px);
         box-shadow: 0 12px 24px rgba(179,0,0,0.22);
      }
      .gallery-grid {
         display: grid;
         grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
         gap: 1.5rem;
      }
      .gallery-card {
         background: #fff;
         border-radius: 18px;
         overflow: hidden;
         box-shadow: 0 12px 28px rgba(0,0,0,0.08);
         border: 1px solid rgba(0,0,0,0.05);
         display: flex;
         flex-direction: column;
         position: relative;
      }
      .gallery-card .thumb {
         position: relative;
         width: 100%;
         padding-bottom: 75%;
         overflow: hidden;
      }
      .gallery-card .thumb img {
         position: absolute;
         inset: 0;
         width: 100%;
         height: 100%;
         object-fit: cover;
         transition: transform 0.3s ease;
      }
      .gallery-card:hover .thumb img {
         transform: scale(1.05);
      }
      .gallery-meta {
         padding: 0.95rem 1rem 1.1rem 1rem;
         display: flex;
         justify-content: center;
      }
      .gallery-actions {
         display: flex;
         gap: 0.6rem;
         justify-content: center;
      }
      .gallery-actions .view-btn,
      .gallery-actions .delete-btn {
         border: none;
         padding: 0.48rem 1.05rem;
         border-radius: 999px;
         font-weight: 700;
         cursor: pointer;
         transition: transform 0.2s ease, box-shadow 0.2s ease;
         font-size: 0.9rem;
      }
      .gallery-actions .view-btn {
         background: linear-gradient(115deg, #1fb86a, #2ddb85);
         color: #fff;
         box-shadow: 0 10px 20px rgba(31,184,106,0.22);
      }
      .gallery-actions .view-btn:hover {
         transform: translateY(-1px);
         box-shadow: 0 14px 28px rgba(31,184,106,0.28);
      }
      .gallery-actions .delete-btn {
         background: #fff0f0;
         color: #b30000;
         box-shadow: 0 6px 18px rgba(179,0,0,0.14);
      }
      .gallery-actions .delete-btn:hover {
         background: #b30000;
         color: #fff;
         transform: translateY(-1px);
         box-shadow: 0 12px 24px rgba(179,0,0,0.22);
      }
      .empty-gallery {
         text-align: center;
         padding: 3rem 1rem;
         background: #fff;
         border-radius: 18px;
         border: 1px dashed rgba(0,0,0,0.08);
         color: #666;
         font-size: 1.1rem;
      }
      .gallery-preview-modal {
         position: fixed;
         inset: 0;
         background: rgba(0,0,0,0.7);
         display: flex;
         justify-content: center;
         align-items: center;
         opacity: 0;
         visibility: hidden;
         transition: opacity 0.25s ease, visibility 0.25s ease;
         z-index: 9999;
         padding: 1.5rem;
      }
      .gallery-preview-modal.show {
         opacity: 1;
         visibility: visible;
      }
      .gallery-preview-modal .modal-content {
         position: relative;
         max-width: min(640px, 78vw);
         max-height: min(78vh, 520px);
         border-radius: 16px;
         overflow: hidden;
         box-shadow: 0 24px 48px rgba(0,0,0,0.32);
         background: #000;
         display: flex;
         align-items: center;
         justify-content: center;
      }
      .gallery-preview-modal img {
         display: block;
         width: 100%;
         height: auto;
         max-height: calc(78vh - 32px);
         object-fit: contain;
         background: #000;
      }
      .gallery-preview-modal .modal-close {
         position: absolute;
         top: 12px;
         right: 12px;
         width: 34px;
         height: 34px;
         border-radius: 50%;
         border: none;
         background: rgba(0,0,0,0.65);
         color: #fff;
         font-size: 20px;
         cursor: pointer;
         display: flex;
         align-items: center;
         justify-content: center;
         transition: background 0.2s ease;
      }
      .gallery-preview-modal .modal-close:hover {
         background: rgba(0,0,0,0.85);
      }
      .gallery-preview-modal .modal-overlay {
         position: absolute;
         inset: 0;
         background: transparent;
      }
      .messages {
         margin-bottom: 1.2rem;
      }
      .messages .alert {
         padding: 0.9rem 1.2rem;
         border-radius: 12px;
         background: #fff7e6;
         border: 1px solid rgba(255,170,43,0.35);
         color: #8a4b00;
         margin-bottom: 0.6rem;
         font-weight: 600;
      }
      @media (max-width: 575.98px) {
         .upload-card {
            padding: 1.4rem;
         }
      }
   </style>
</head>
<body class="admin-panel">

<?php
// Asegurar que $message sea un arreglo antes de incluir el header
if(!isset($message) || !is_array($message)){
   $message = [];
}

include '../components/admin_header.php';
?>

<section class="page-heading">
   <h1 class="section-title">Galería</h1>
</section>

<section class="gallery-wrapper">

   <?php if(!empty($pageMessages)): ?>
      <div class="messages">
         <?php foreach($pageMessages as $msg): ?>
            <div class="alert"><?= htmlspecialchars($msg); ?></div>
         <?php endforeach; ?>
      </div>
   <?php endif; ?>

   <div class="upload-card">
      <h2>Agregar nueva imagen</h2>
      <form method="POST" enctype="multipart/form-data">
         <div class="dropzone">
            <i class="fas fa-cloud-upload-alt"></i>
            <strong>Selecciona la imagen que quieres añadir</strong>
            <span>Formatos permitidos: JPG, PNG, WEBP, GIF o AVIF &middot; Máximo 20 MB</span>
            <input type="file" name="gallery_image" accept="image/*" required>
         </div>
         <button type="submit" name="add_image" class="btn-primary">Subir imagen</button>
      </form>
   </div>

   <?php if(empty($galleryItems)): ?>
      <div class="empty-gallery">
         Aún no has agregado imágenes a la galería.
      </div>
   <?php else: ?>
      <div class="gallery-grid">
         <?php foreach($galleryItems as $item): ?>
            <div class="gallery-card">
               <div class="thumb">
                  <img src="<?= htmlspecialchars($item['url']); ?>" alt="Imagen de galería">
               </div>
               <div class="gallery-meta">
                  <div class="gallery-actions">
                     <button type="button" class="view-btn" data-image="<?= htmlspecialchars($item['url']); ?>">Ver</button>
                     <form method="POST" onsubmit="return confirm('¿Eliminar esta imagen de la galería?');">
                        <input type="hidden" name="image_name" value="<?= htmlspecialchars($item['name']); ?>">
                        <button type="submit" name="delete_image" class="delete-btn">Eliminar</button>
                     </form>
                  </div>
               </div>
            </div>
         <?php endforeach; ?>
      </div>
   <?php endif; ?>
</section>

<div class="gallery-preview-modal" id="gallery-preview-modal" aria-hidden="true">
   <div class="modal-overlay" data-dismiss="modal"></div>
   <div class="modal-content">
      <button class="modal-close" type="button" data-dismiss="modal" aria-label="Cerrar vista">&times;</button>
      <img src="" alt="Vista previa" id="gallery-preview-image">
   </div>
</div>

<script>
document.addEventListener('DOMContentLoaded', () => {
   const modal = document.getElementById('gallery-preview-modal');
   const previewImage = document.getElementById('gallery-preview-image');
   const viewButtons = document.querySelectorAll('.view-btn');

   const openModal = (src) => {
      if(!modal || !previewImage) return;
      previewImage.src = src;
      modal.classList.add('show');
      modal.setAttribute('aria-hidden', 'false');
   };

   const closeModal = () => {
      if(!modal || !previewImage) return;
      modal.classList.remove('show');
      modal.setAttribute('aria-hidden', 'true');
      previewImage.src = '';
   };

   viewButtons.forEach(btn => {
      btn.addEventListener('click', () => {
         const src = btn.dataset.image;
         if(src){
            openModal(src);
         }
      });
   });

   modal?.querySelectorAll('[data-dismiss="modal"]').forEach(el => {
      el.addEventListener('click', closeModal);
   });

   document.addEventListener('keydown', (event) => {
      if(event.key === 'Escape'){
         closeModal();
      }
   });
});
</script>

</body>
</html>
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