<?php
defined('admin') or exit;
// Default input product values
$product = [
    'name' => '',
    'description' => '',
    'price' => '',
    'rrp' => '',
    'quantity' => '',
    'date_added' => date('Y-m-d\TH:i'),
    'media' => [],
    'categories' => [],
    'options' => [],
    'downloads' => [],
    'weight' => '',
    'url_slug' => '',
    'status' => 1,
    'productcode' => ''
];
// Get all the categories from the database
$stmt = $pdo->query('SELECT * FROM categories');
$stmt->execute();
$categories = $stmt->fetchAll(PDO::FETCH_ASSOC);
// Add product images to the database
function addProductImages($pdo, $product_id) {
    // Get the total number of media
    if (isset($_POST['media']) && is_array($_POST['media']) && count($_POST['media']) > 0) {
        // Iterate media
        $delete_list = [];
        for ($i = 0; $i < count($_POST['media']); $i++) {
            // If the media doesnt exist in the database
            if (!intval($_POST['media_product_id'][$i])) {
                // Insert new media
                $stmt = $pdo->prepare('INSERT INTO products_media (product_id,media_id,position) VALUES (?,?,?)');
                $stmt->execute([ $product_id, $_POST['media'][$i], $_POST['media_position'][$i] ]);
                $delete_list[] = $pdo->lastInsertId();
            } else {
                // Update existing media
                $stmt = $pdo->prepare('UPDATE products_media SET position = ? WHERE id = ?');
                $stmt->execute([ $_POST['media_position'][$i], $_POST['media_product_id'][$i] ]);    
                $delete_list[] = $_POST['media_product_id'][$i];          
            }
        }
        // Delete media
        $in  = str_repeat('?,', count($delete_list) - 1) . '?';
        $stmt = $pdo->prepare('DELETE FROM products_media WHERE product_id = ? AND id NOT IN (' . $in . ')');
        $stmt->execute(array_merge([ $product_id ], $delete_list));
    } else {
        // No media exists, delete all
        $stmt = $pdo->prepare('DELETE FROM products_media WHERE product_id = ?');
        $stmt->execute([ $product_id ]);       
    }
}
// Add product categories to the database
function addProductCategories($pdo, $product_id) {
    if (isset($_POST['categories']) && is_array($_POST['categories']) && count($_POST['categories']) > 0) {
        $in  = str_repeat('?,', count($_POST['categories']) - 1) . '?';
        $stmt = $pdo->prepare('DELETE FROM products_categories WHERE product_id = ? AND category_id NOT IN (' . $in . ')');
        $stmt->execute(array_merge([ $product_id ], $_POST['categories']));
        foreach ($_POST['categories'] as $cat) {
            $stmt = $pdo->prepare('INSERT IGNORE INTO products_categories (product_id,category_id) VALUES (?,?)');
            $stmt->execute([ $product_id, $cat ]);
        }
    } else {
        $stmt = $pdo->prepare('DELETE FROM products_categories WHERE product_id = ?');
        $stmt->execute([ $product_id ]);       
    }
}
// Add product options to the database
function addProductOptions($pdo, $product_id) {
    if (isset($_POST['option_title']) && is_array($_POST['option_title']) && count($_POST['option_title']) > 0) {
        $delete_list = [];
        for ($i = 0; $i < count($_POST['option_title']); $i++) {
            $delete_list[] = $_POST['option_title'][$i] . '__' . $_POST['option_name'][$i];
            $stmt = $pdo->prepare('INSERT INTO products_options (title,name,quantity,price,price_modifier,weight,weight_modifier,type,required,position,product_id) VALUES (?,?,?,?,?,?,?,?,?,?,?) ON DUPLICATE KEY UPDATE quantity = VALUES(quantity), price = VALUES(price), price_modifier = VALUES(price_modifier), weight = VALUES(weight), weight_modifier = VALUES(weight_modifier), type = VALUES(type), required = VALUES(required), position = VALUES(position)');
            $stmt->execute([ $_POST['option_title'][$i], $_POST['option_name'][$i], empty($_POST['option_quantity'][$i]) ? -1 : $_POST['option_quantity'][$i], empty($_POST['option_price'][$i]) ? 0.00 : $_POST['option_price'][$i], $_POST['option_price_modifier'][$i], empty($_POST['option_weight'][$i]) ? 0.00 : $_POST['option_weight'][$i], $_POST['option_weight_modifier'][$i], $_POST['option_type'][$i], $_POST['option_required'][$i], $_POST['option_position'][$i], $product_id ]);           
        }
        $in  = str_repeat('?,', count($delete_list) - 1) . '?';
        $stmt = $pdo->prepare('DELETE FROM products_options WHERE product_id = ? AND CONCAT(title, "__", name) NOT IN (' . $in . ')');
        $stmt->execute(array_merge([ $product_id ], $delete_list));  
    } else {
        $stmt = $pdo->prepare('DELETE FROM products_options WHERE product_id = ?');
        $stmt->execute([ $product_id ]);       
    }
}
// Add product downloads to the database
function addProductDownloads($pdo, $product_id) {
    if (isset($_POST['download_file_path']) && is_array($_POST['download_file_path']) && count($_POST['download_file_path']) > 0) {
        $delete_list = [];
        for ($i = 0; $i < count($_POST['download_file_path']); $i++) {
            $delete_list[] = $_POST['download_file_path'][$i];
            $stmt = $pdo->prepare('INSERT INTO products_downloads (product_id,file_path,position) VALUES (?,?,?) ON DUPLICATE KEY UPDATE position = VALUES(position)');
            $stmt->execute([ $product_id, $_POST['download_file_path'][$i], $_POST['download_position'][$i] ]);           
        }
        $in  = str_repeat('?,', count($delete_list) - 1) . '?';
        $stmt = $pdo->prepare('DELETE FROM products_downloads WHERE product_id = ? AND file_path NOT IN (' . $in . ')');
        $stmt->execute(array_merge([ $product_id ], $delete_list));  
    } else {
        $stmt = $pdo->prepare('DELETE FROM products_downloads WHERE product_id = ?');
        $stmt->execute([ $product_id ]);       
    }
}
if (isset($_GET['id'])) {
    // ID param exists, edit an existing product
    $page = 'Edit';
    if (isset($_POST['submit'])) {

        //decode product_config to JSON
        $product_config = $_POST['product_config'] ?? '';
        $productcode = $_POST['productcode'] ?? '';
        // Update the product
        $stmt = $pdo->prepare('UPDATE products SET name = ?, description = ?, price = ?, rrp = ?, quantity = ?, date_added = ?, weight = ?, url_slug = ?, status = ?, product_config = ?, productcode = ? WHERE id = ?');
        $stmt->execute([ $_POST['name'], $_POST['description'], empty($_POST['price']) ? 0.00 : $_POST['price'], empty($_POST['rrp']) ? 0.00 : $_POST['rrp'], $_POST['quantity'], date('Y-m-d H:i:s', strtotime($_POST['date'])), empty($_POST['weight']) ? 0.00 : $_POST['weight'], $_POST['url_slug'], $_POST['status'], $product_config, $productcode, $_GET['id'] ]);
        addProductImages($pdo, $_GET['id']);
        addProductCategories($pdo, $_GET['id']);
        addProductOptions($pdo, $_GET['id']);
        addProductDownloads($pdo, $_GET['id']);
        // Clear session cart
        if (isset($_SESSION['cart'])) {
            unset($_SESSION['cart']);
        }
        header('Location: index.php?page=products&success_msg=2');
        exit;
    }
    if (isset($_POST['delete'])) {
        // Redirect and delete product
        header('Location: index.php?page=products&delete=' . $_GET['id']);
        exit;
    }
    // Get the product and its images from the database
    $stmt = $pdo->prepare('SELECT * FROM products WHERE id = ?');
    $stmt->execute([ $_GET['id'] ]);
    $product = $stmt->fetch(PDO::FETCH_ASSOC);
    // get product media
    $stmt = $pdo->prepare('SELECT m.*, pm.position, pm.id AS product_id FROM media m JOIN products_media pm ON pm.media_id = m.id JOIN products p ON p.id = pm.product_id WHERE p.id = ? ORDER BY pm.position');
    $stmt->execute([ $_GET['id'] ]);
    $product['media'] = $stmt->fetchAll(PDO::FETCH_ASSOC); 
    // Get the product categories
    $stmt = $pdo->prepare('SELECT c.name, c.id FROM products_categories pc JOIN categories c ON c.id = pc.category_id WHERE pc.product_id = ?');
    $stmt->execute([ $_GET['id'] ]);
    $product['categories'] = $stmt->fetchAll(PDO::FETCH_ASSOC);
    // Get the product options
    $stmt = $pdo->prepare('SELECT title, type, GROUP_CONCAT(name) AS list FROM products_options WHERE product_id = ? GROUP BY title, type, position ORDER BY position');
    $stmt->execute([ $_GET['id'] ]);
    $product['options'] = $stmt->fetchAll(PDO::FETCH_ASSOC);
    // Get the product full options
    $stmt = $pdo->prepare('SELECT * FROM products_options WHERE product_id = ? ORDER BY id');
    $stmt->execute([ $_GET['id'] ]);
    $product['options_full'] = $stmt->fetchAll(PDO::FETCH_ASSOC);
    // Get the product downloads
    $stmt = $pdo->prepare('SELECT * FROM products_downloads WHERE product_id = ? ORDER BY position');
    $stmt->execute([ $_GET['id'] ]);
    $product['downloads'] = $stmt->fetchAll(PDO::FETCH_ASSOC);
} else {
    // Create a new product
    $page = 'Create';
    if (isset($_POST['submit'])) {
        $product_config = $_POST['product_config'] ?? '';
        $productcode = $_POST['productcode'] ?? '';
        $stmt = $pdo->prepare('INSERT INTO products (name,description,price,rrp,quantity,date_added,weight,url_slug,status, product_config, productcode) VALUES (?,?,?,?,?,?,?,?,?,?,?)');
        $stmt->execute([ $_POST['name'], $_POST['description'], empty($_POST['price']) ? 0.00 : $_POST['price'], empty($_POST['rrp']) ? 0.00 : $_POST['rrp'], $_POST['quantity'], date('Y-m-d H:i:s', strtotime($_POST['date'])), empty($_POST['weight']) ? 0.00 : $_POST['weight'], $_POST['url_slug'], $_POST['status'], $product_config, $productcode ]);
        $id = $pdo->lastInsertId();
        addProductImages($pdo, $id);
        addProductCategories($pdo, $id);
        addProductOptions($pdo, $id);
        addProductDownloads($pdo, $id);
        // Clear session cart
        if (isset($_SESSION['cart'])) {
            unset($_SESSION['cart']);
        }
        header('Location: index.php?page=products&success_msg=1');
        exit;
    }
}
?>
<?=template_admin_header($page . ' Product', 'products', 'manage')?>

<form action="" method="post">

    <div class="content-title responsive-flex-wrap responsive-pad-bot-3">
        <h2 class="responsive-width-100"><?=$page?> Product</h2>
        <a href="index.php?page=products" class="btn alt mar-right-2">Cancel</a>
        <?php if ($page == 'Edit'): ?>
        <input type="submit" name="delete" value="Delete" class="btn red mar-right-2" onclick="return confirm('Are you sure you want to delete this product?')">
        <?php endif; ?>
        <input type="submit" name="submit" value="Save" class="btn">
    </div>

    <div class="tabs">
        <a href="#" class="active">General</a>
        <a href="#">Media</a>
        <a href="#">Configuration</a>
        <a href="#">Options</a>
        <a href="#">Downloads</a>
    </div>

    <!-- general tab -->
    <div class="content-block tab-content active">

        <div class="form responsive-width-100">
            <label for="name"> Productcode</label>
            <input id="name" type="text" name="productcode" placeholder="Productcode" value="<?=$product['productcode']?>">

            <label for="name"><i class="required">*</i> Name</label>
            <input id="name" type="text" name="name" placeholder="Name" value="<?=$product['name']?>" required>

            <label for="description">Description (HTML)</label>
            <textarea id="description" name="description" placeholder="Product Description..."><?=$product['description']?></textarea>

            <label for="url_slug">URL Slug</label>
            <input id="url_slug" type="text" name="url_slug" placeholder="your-product-name" value="<?=$product['url_slug']?>" title="If the rewrite URL setting is enabled, the URL slug will appear after the trailing slash as opposed to the product ID.">

            <label for="price"><i class="required">*</i> Price</label>
            <input id="price" type="number" name="price" placeholder="Price" min="0" step=".01" value="<?=$product['price']?>" required>

            <label for="rrp">RRP</label>
            <input id="rrp" type="number" name="rrp" placeholder="RRP" min="0" step=".01" value="<?=$product['rrp']?>">

            <label for="quantity"><i class="required">*</i> Quantity</span></label>
            <input id="quantity" type="number" name="quantity" placeholder="Quantity" min="-1" value="<?=$product['quantity']?>" title="-1 = unlimited" required>

            <label for="category">Categories</label>
            <div class="multiselect" data-name="categories[]">
                <?php foreach ($product['categories'] as $cat): ?>
                <span class="item" data-value="<?=$cat['id']?>">
                    <i class="remove">&times;</i><?=$cat['name']?>
                    <input type="hidden" name="categories[]" value="<?=$cat['id']?>">
                </span>
                <?php endforeach; ?>
                <input type="text" class="search" id="category" placeholder="Categories">
                <div class="list">
                    <?php foreach ($categories as $cat): ?>
                    <span data-value="<?=$cat['id']?>"><?=$cat['name']?></span>
                    <?php endforeach; ?>
                </div>
            </div>

            <label for="weight">Weight (lbs)</span></label>
            <input id="weight" type="number" name="weight" placeholder="Weight (lbs)" min="0" value="<?=$product['weight']?>">

            <label for="status">Status</label>
            <select id="status" name="status">
                <option value="1"<?=$product['status']==1?' selected':''?>>Enabled</option>
                <option value="0"<?=$product['status']==0?' selected':''?>>Disabled</option>
            </select>

            <label for="date"><i class="required">*</i> Date Added</label>
            <input id="date" type="datetime-local" name="date" placeholder="Date" value="<?=date('Y-m-d\TH:i', strtotime($product['date_added']))?>" required>

        </div>

    </div>

    <!-- product media tab -->
    <div class="content-block tab-content">

        <div class="pad-3 product-media-tab responsive-width-100">

            <h3 class="title1 mar-bot-5">Images</h3>

            <div class="product-media-container">
                <?php if (isset($product['media'])): ?>
                <?php foreach ($product['media'] as $i => $media): ?>
                <div class="product-media">
                    <span class="media-index responsive-hidden"><?=$i+1?></span>
                    <a class="media-img" href="../<?=$media['full_path']?>" target="_blank">
                        <img src="../<?=$media['full_path']?>">
                    </a>
                    <div class="media-text">
                        <h3 class="responsive-hidden"><?=$media['title']?></h3>
                        <p class="responsive-hidden"><?=$media['caption']?></p>
                    </div>
                    <div class="media-position">
                        <i class="fas fa-times media-delete"></i>
                        <i class="fas fa-arrow-up move-up"></i>
                        <i class="fas fa-arrow-down move-down"></i>
                    </div>
                    <input type="hidden" class="input-media-id" name="media[]" value="<?=$media['id']?>">
                    <input type="hidden" class="input-media-product-id" name="media_product_id[]" value="<?=$media['product_id']?>">
                    <input type="hidden" class="input-media-position" name="media_position[]" value="<?=$media['position']?>">
                </div>
                <?php endforeach; ?>
                <?php endif; ?>
                <?php if (empty($product['media'])): ?>
                <p class="no-images-msg">There are no images.</p>
                <?php endif; ?>
            </div>

            <a href="#" class="btn open-media-library-modal mar-bot-2 mar-top-4">Add Media</a>

        </div>

    </div>

     <!-- product media configuration -->
     <div class="content-block tab-content">

        <div class="pad-3 product-media-tab responsive-width-100">

            <h3 class="title1 mar-bot-5">Available Images</h3>

            <div class="product-media-container">
                <?php if (isset($product['media'])): ?>
                <div class="product-media">
                <?php foreach ($product['media'] as $i => $media): ?>
                
                    <span class="media-index"><?=$media['id']?></span>
                    <a class="media-img" href="../<?=$media['full_path']?>" target="_blank">
                        <img src="../<?=$media['full_path']?>">
                    </a>
                
                <?php endforeach; ?>
                </div>
                <?php endif; ?>
                <?php if (empty($product['media'])): ?>
                <p class="no-images-msg">There are no images.</p>
                <?php endif; ?>
            </div>
            
            <h3 class="title1 mar-bot-5">Available Options</h3>
            <div class="">
                <?php if (isset($product['options'])): ?>
                <?php foreach ($product['options'] as $i => $option): ?>
                <div style="display: flex;">
                    <?php foreach ($product['options_full'] as $option_full): ?>
                    <?php if ($option['title'] != $option_full['title']) continue; ?>
                    <p><?=$option_full['id']?> - <?=$option_full['name']?> - <?=$option_full['title']?></p>
                    <?php endforeach; ?>
                </div>
                <?php endforeach; ?>
                <?php endif; ?>
                <?php if (empty($product['options'])): ?>
                <p class="no-options-msg">There are no options.</p>
                <?php endif; ?>
            </div>

            <h3 class="title1 mar-bot-5">Configuration JSON Profile</h3>
            <textarea name="product_config" id="product_config" style="width:100%;min-height: 50vh;"><?=$product['product_config']?></textarea>

        </div>

    </div>

    <!-- options tab -->
    <div class="content-block tab-content">

        <div class="pad-3 product-options-tab responsive-width-100">

            <h3 class="title1 mar-bot-5">Options (be aware of changing optionIDs)</h3>

            <div class="product-options-container">
                <?php if (isset($product['options'])): ?>
                <?php foreach ($product['options'] as $i => $option): ?>
                <div class="product-option">
                    <span class="option-index responsive-hidden"><?=$i+1?></span>
                    <div class="option-text">
                        <h3><?=$option['title']?> (<?=$option['type']?>)</h3>
                        <p><?=str_replace(',', ', ', $option['list'])?></p>
                    </div>
                    <div class="option-position">
                        <i class="fas fa-pen option-edit"></i>
                        <i class="fas fa-times option-delete"></i>
                        <i class="fas fa-arrow-up move-up"></i>
                        <i class="fas fa-arrow-down move-down"></i>
                    </div>
                    <?php foreach ($product['options_full'] as $option_full): ?>
                    <?php if ($option['title'] != $option_full['title']) continue; ?>
                    <div class="input-option-value">
                        <input type="hidden" class="input-option-title" name="option_title[]" value="<?=$option_full['title']?>">
                        <input type="hidden" class="input-option-name" name="option_name[]" value="<?=$option_full['name']?>">
                        <input type="hidden" class="input-option-quantity" name="option_quantity[]" value="<?=$option_full['quantity']?>">
                        <input type="hidden" class="input-option-price" name="option_price[]" value="<?=$option_full['price']?>">
                        <input type="hidden" class="input-option-price-modifier" name="option_price_modifier[]" value="<?=$option_full['price_modifier']?>">
                        <input type="hidden" class="input-option-weight" name="option_weight[]" value="<?=$option_full['weight']?>">
                        <input type="hidden" class="input-option-weight-modifier" name="option_weight_modifier[]" value="<?=$option_full['weight_modifier']?>">
                        <input type="hidden" class="input-option-type" name="option_type[]" value="<?=$option_full['type']?>">
                        <input type="hidden" class="input-option-required" name="option_required[]" value="<?=$option_full['required']?>">
                        <input type="hidden" class="input-option-position" name="option_position[]" value="<?=$option_full['position']?>">
                    </div>
                    <?php endforeach; ?>
                </div>
                <?php endforeach; ?>
                <?php endif; ?>
                <?php if (empty($product['options'])): ?>
                <p class="no-options-msg">There are no options.</p>
                <?php endif; ?>
            </div>

            <a href="#" class="btn open-options-modal mar-bot-2 mar-top-4">Add Option</a>

        </div>

    </div>

    <!-- digital downloads tab -->
    <div class="content-block tab-content">

        <div class="pad-3 product-options-tab responsive-width-100">

            <h3 class="title1 mar-bot-5">Digital Downloads</h3>

            <div class="product-downloads-container">
                <?php if (isset($product['downloads'])): ?>
                <?php foreach ($product['downloads'] as $i => $download): ?>
                <?php if (!file_exists('../' . $download['file_path'])) continue; ?>
                <div class="product-download">
                    <span class="download-index responsive-hidden"><?=$i+1?></span>
                    <div class="download-text">
                        <h3><?=$download['file_path']?></h3>
                        <p><?=mime_content_type('../' . $download['file_path'])?>, <?=format_bytes(filesize('../' . $download['file_path']))?></p>
                    </div>
                    <div class="download-position">
                        <i class="fas fa-times download-delete"></i>
                        <i class="fas fa-arrow-up move-up"></i>
                        <i class="fas fa-arrow-down move-down"></i>
                    </div>
                    <div class="input-option-value">
                        <input type="hidden" class="input-download-file-path" name="download_file_path[]" value="<?=$download['file_path']?>">
                        <input type="hidden" class="input-download-position" name="download_position[]" value="<?=$download['position']?>">
                    </div>
                </div>
                <?php endforeach; ?>
                <?php endif; ?>
                <?php if (empty($product['downloads'])): ?>
                <p class="no-downloads-msg">There are no digital downloads.</p>
                <?php endif; ?>
            </div>

            <a href="#" class="btn open-downloads-modal mar-bot-2 mar-top-4">Add Digital Download</a>

        </div>

    </div>

</form>

<?=template_admin_footer('initProduct()')?>