<?php
require_once('conn.php');


// Check login status (assuming you have a similar function in PHP)
checkLogin("信息管理");

// Initialize all variables to avoid undefined warnings
$act = isset($_GET['act']) ? $_GET['act'] : '';
$product_name = isset($_POST['ProductName']) ? htmlspecialcharsFix($_POST['ProductName']) : '';
$product_img = isset($_POST['ProductImg']) ? htmlspecialcharsFix($_POST['ProductImg']) : '';
$unit = isset($_POST['unit']) ? htmlspecialcharsFix($_POST['unit']) : '';
$moq = isset($_POST['moq']) ? htmlspecialcharsFix($_POST['moq']) : '';
$category_id = isset($_POST['category_id']) ? intval($_POST['category_id']) : (isset($_GET['category_id']) ? intval($_GET['category_id']) : 0);
$nosale = isset($_POST['nosale']) ? $_POST['nosale'] : array();
$num = isset($_POST['num']) ? $_POST['num'] : array();
$price = isset($_POST['price']) ? $_POST['price'] : array();
$note = isset($_POST['note']) ? htmlspecialcharsFix($_POST['note']) : '';
$tips = isset($_POST['tips']) ? htmlspecialcharsFix($_POST['tips']) : '';
$page = isset($_GET['Page']) ? $_GET['Page'] : 1;
$keys = isset($_GET['Keys']) ? urlencode($_GET['Keys']) : '';
$keyscode = isset($_GET['Keys']) ? htmlspecialcharsFix($_GET['Keys']) : '';

// Handle form submissions and redirects before any output
if ($act == 'save') {
    $id = isset($_POST['id']) ? $_POST['id'] : '';
    $is_edit = (!empty($id) && is_numeric($id));
    
    // Process nosale array into comma-separated string
    $nosale_str = '';
    if (is_array($nosale) && !empty($nosale)) {
        $nosale_clean = array_map('intval', $nosale); // Ensure all values are integers
        $nosale_str = implode(',', $nosale_clean);
    }
    
    if ($is_edit) {
        // Update existing product
        $sql = "UPDATE products SET 
                ProductName = '" . mysqli_real_escape_string($conn, $product_name) . "',
                ProductImg = '" . mysqli_real_escape_string($conn, $product_img) . "',
                Addtime = NOW(),
                moq = '" . mysqli_real_escape_string($conn, $moq) . "',
                unit = '" . mysqli_real_escape_string($conn, $unit) . "',
                nosale = '" . $nosale_str . "',
                note = '" . mysqli_real_escape_string($conn, $note) . "',
                tips = '" . mysqli_real_escape_string($conn, $tips) . "',
                category_id = " . $category_id . "
                WHERE id = " . (int)$id;
        mysqli_query($conn, $sql);
        
        // Handle price updates
        mysqli_query($conn, "DELETE FROM price WHERE productId = " . (int)$id . " AND AreaId = 0");
        
        if (is_array($num) && is_array($price)) {
            foreach ($num as $key => $num_value) {
                if (isset($price[$key])) { // Only process if we have both num and price
                    $num_value = empty($num_value) ? 0 : (float)$num_value;
                    $price_value = empty($price[$key]) ? 0 : (float)$price[$key];
                    $sql = "INSERT INTO price (productId, AreaId, num, price) VALUES 
                            (" . (int)$id . ", 0, " . $num_value . ", '" . $price_value . "')";
                    mysqli_query($conn, $sql);
                }
            }
        }
    } else {
        // Insert new product
        $sql = "INSERT INTO products (ProductName, ProductImg, Addtime, moq, unit, nosale, note, tips, category_id) 
                VALUES (
                    '" . mysqli_real_escape_string($conn, $product_name) . "',
                    '" . mysqli_real_escape_string($conn, $product_img) . "',
                    NOW(),
                    '" . mysqli_real_escape_string($conn, $moq) . "',
                    '" . mysqli_real_escape_string($conn, $unit) . "',
                    '" . $nosale_str . "',
                    '" . mysqli_real_escape_string($conn, $note) . "',
                    '" . mysqli_real_escape_string($conn, $tips) . "',
                    " . $category_id . "
                )";
        mysqli_query($conn, $sql);
        $id = mysqli_insert_id($conn);
        
        // Handle price insertions
        if (is_array($num) && is_array($price)) {
            foreach ($num as $key => $num_value) {
                if (isset($price[$key])) { // Only process if we have both num and price
                    $num_value = empty($num_value) ? 0 : (float)$num_value;
                    $price_value = empty($price[$key]) ? 0 : (float)$price[$key];
                    $sql = "INSERT INTO price (productId, AreaId, num, price) VALUES 
                            (" . (int)$id . ", 0, " . $num_value . ", '" . $price_value . "')";
                    mysqli_query($conn, $sql);
                }
            }
        }
    }
    
    // Redirect after save
    header("Location: ?keys=" . $keys . "&Page=" . $page);
    exit();
}

// Handle bulk actions
if ($act == 'postchk') {
    if (isset($_POST['chkbox']) && isset($_POST['chkact'])) {
        $chk_ids = array_map('intval', $_POST['chkbox']);
        $chk_act = (int)$_POST['chkact'];
        
        if (!empty($chk_ids)) {
            $ids_str = implode(',', $chk_ids);
            
            switch ($chk_act) {
                case 0:
                case 1:
                    $sql = "UPDATE customer SET cs_state = " . $chk_act . " WHERE id IN (" . $ids_str . ")";
                    break;
                case -1:
                    $sql = "DELETE FROM products WHERE id IN (" . $ids_str . ")";
                    break;
            }
            
            if (isset($sql)) {
                mysqli_query($conn, $sql);
            }
        }
        
        header("Location: ?Keys=" . $keys . "&Page=" . $page);
        exit();
    }
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>产品信息管理</title>
<link rel="stylesheet" href="css/common.css" type="text/css" />
<script language="javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="js/js.js"></script>
<script type="text/javascript" src="js/SearchArea.js"></script>
<script type="text/javascript" src="xheditor-1.1.9/xheditor-1.1.9-zh-cn.min.js"></script>
<style>
    .add_btn {
        background-color: #5cb85c;
        color: white;
        padding: 6px 15px;
        border: none;
        border-radius: 3px;
        cursor: pointer;
        font-weight: bold;
    }
    .add_btn:hover {
        background-color: #449d44;
    }
    .search_panel {
        padding: 15px;
        border-radius: 4px;
        border: 1px solid #ddd;
        margin-bottom: 20px;
        background-color: #f9f9f9;
    }
    .search_panel label {
        font-weight: bold;
        margin-right: 5px;
    }
    .search_panel .inputTxt {
        width: 200px;
        padding: 5px;
        border: 1px solid #ccc;
        border-radius: 3px;
    }
    .search_panel .searchgo {
        padding: 5px 15px;
        background-color: #337ab7;
        color: white;
        border: none;
        border-radius: 3px;
        cursor: pointer;
    }
    .search_panel .searchgo:hover {
        background-color: #286090;
    }
    .select1 {
        padding: 5px;
        border: 1px solid #ccc;
        border-radius: 3px;
        min-width: 200px;
    }
</style>
</head>

<body>
<div id="man_zone">
<?php
// Handle add/edit form display
if ($act == 'add' || $act == 'edit') {
    $id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
    $is_edit = ($id > 0);
    
    if ($is_edit) {
        $sql = "SELECT * FROM products WHERE id = " . (int)$id;
        $result = mysqli_query($conn, $sql);
        
        if (mysqli_num_rows($result) > 0) {
            $row = mysqli_fetch_assoc($result);
            $product_name = htmlspecialcharsFix($row['ProductName']);
            $product_img = htmlspecialcharsFix($row['ProductImg']);
            $unit = htmlspecialcharsFix($row['unit']);
            $moq = htmlspecialcharsFix($row['moq']);
            $nosale = $row['nosale'];
            $note = htmlspecialcharsFix($row['note']);
            $tips = htmlspecialcharsFix($row['tips']);
            $category_id = $row['category_id'] ? intval($row['category_id']) : 0;
        } else {
            // Product not found, redirect
            header("Location: ?Keys=" . $keys . "&Page=" . $page);
            exit();
        }
    }
    
    $href_str = "?keys=" . $keys . "&Page=" . $page;
    ?>
    <form name="form1" method="post" action="<?php echo $href_str; ?>&act=save">
        <table width="100%" border="0" cellpadding="3" cellspacing="1" class="table1">
            <tbody>
                <tr>
                    <th width="8%">产品名称</th>
                    <td><input type="text" id="ProductName" name="ProductName" value="<?php echo $product_name; ?>" class="txt1" />
                    <input type="hidden" name="id" value="<?php echo $id; ?>" /></td>
                </tr>
                <tr>
                    <th width="8%">产品分类</th>
                    <td>
                        <select name="category_id" id="category_id" class="select1">
                            <option value="0">-- 请选择分类 --</option>
                            <?php
                            // Include the category display functions
                            require_once 'functions.php';
                            
                            // Build category tree
                            $category_data = buildCategoryTree($conn);
                            $cat_tree = $category_data['tree'];
                            
                            // Output options
                            outputCategoryOptions($cat_tree, $category_id);
                            ?>
                        </select>
                    </td>
                </tr>
                <tr>
                    <th width="8%">产品图片</th>
                    <td><input type="text" id="ProductImg" name="ProductImg" placeholder="186x*186px" value="<?php echo $product_img; ?>" class="txt1" style="width:390px;float:left;" />
                    <iframe src="uploadfile.php" frameborder="0" scrolling="no" style="width:400px;height:22px;float:left;margin-left:10px;"></iframe></td>
                </tr>
                <tr>
                    <th width="8%">计价单位</th>
                    <td><input type="text" id="unit" name="unit" value="<?php echo $unit; ?>" class="txt1"/></td>
                </tr>
                <tr>
                    <th width="8%">起订数量</th>
                    <td><input type="text" id="moq" name="moq" value="<?php echo $moq; ?>" class="txt1"/></td>
                </tr>
                <tr>
                    <th width="8%">默认售价</th>
                    <td>
                        <div class="Price">
                        <?php
                        if ($is_edit) {
                            $price_sql = "SELECT num, price FROM price WHERE AreaId = 0 AND productId = " . $id . " ORDER BY num ASC";
                            $price_result = mysqli_query($conn, $price_sql);
                            if (mysqli_num_rows($price_result) > 0) {
                                while ($price_row = mysqli_fetch_assoc($price_result)) {
                                    ?>
                                    <div class="priceitem">
                                        <label>≥</label>
                                        <input type="number" class="txt3 num" name="num[]" value="<?php echo $price_row['num']; ?>">
                                        <label class="unit"><?php echo $unit; ?></label>
                                        <label>售价</label>
                                        <input type="text" class="txt3 price" name="price[]" value="<?php echo $price_row['price']; ?>">
                                        <label>RMB</label>
                                        <span class="additem"></span>
                                        <span class="delitem"></span>
                                        <span class="note"></span>
                                    </div>
                                    <?php
                                }
                            }
                        }
                        if (!$is_edit || mysqli_num_rows($price_result) == 0) {
                            ?>
                            <div class="priceitem">
                                <label>≥</label>
                                <input type="number" class="txt3 num" name="num[]">
                                <label class="unit"><?php echo $unit; ?></label>
                                <label>售价</label>
                                <input type="text" class="txt3 price" name="price[]">
                                <label>RMB</label>
                                <span class="additem"></span>
                                <span class="delitem"></span>
                                <span class="note"></span>
                            </div>
                            <?php
                        }
                        ?>
                        </div>
                    </td>
                </tr>
                <tr>
                    <th width="8%">不报价地区</th>
                    <td>
                        <ul class="areadd">
                        <?php
                        if (!empty($nosale)) {
                            // 确保nosale是逗号分隔的字符串格式
                            $nosale_str = is_array($nosale) ? implode(',', $nosale) : $nosale;
                            $area_sql = "SELECT id, countryName FROM country WHERE id IN(" . $nosale_str . ")";
                            $area_result = mysqli_query($conn, $area_sql);
                            while ($area_row = mysqli_fetch_assoc($area_result)) {
                                ?>
                                <li><input type="hidden" name="nosale[]" value="<?php echo $area_row['id']; ?>"><span class="cname"><?php echo htmlspecialcharsFix($area_row['countryName']); ?></span><span class="close"></span></li>
                                <?php
                            }
                        }
                        ?>
                        </ul>
                        <input type="text" id="AreaSearch" class="fastsearch">
                        <div id="arealist" class="productlist"><ul></ul></div>
                    </td>
                </tr>
                <tr>
                    <th width="8%">不报价处理方式</th>
                    <td><input type="text" id="note" name="note" value="<?php echo $note; ?>" class="txt1"/></td>
                </tr>
                <tr>
                    <th width="8%">备注</th>
                    <td><input type="text" id="tips" name="tips" value="<?php echo $tips; ?>" class="txt1"/></td>
                </tr>
                <tr>
                    <th></th>
                    <td colspan="2">
                        <input type="submit" name="save" value="确定" class="btn1" />
                        <input type="reset" name="reset" value="重置" class="btn1" />
                        <input type="button" value="返回" class="btn1" onClick="location.href='<?php echo $href_str; ?>'" />
                    </td>
                </tr>
            </tbody>
        </table>
    </form>
    <?php
} else {
    // Display product list
    require_once 'functions.php';
    
    // Get filter category id
    $filter_category_id = isset($_GET['category_id']) ? intval($_GET['category_id']) : 0;
    
    // Prepare SQL condition for category filtering
    $category_condition = '';
    if ($filter_category_id > 0) {
        // Get all subcategories of the selected category
        $category_data = buildCategoryTree($conn);
        $all_categories = $category_data['all_categories'];
        
        $category_ids = array($filter_category_id);
        getSubcategoryIds($all_categories, $filter_category_id, $category_ids);
        
        $category_condition = " WHERE category_id IN (" . implode(',', $category_ids) . ")";
    }
    
    // Search condition
    $search_condition = '';
    if (!empty($keyscode)) {
        $search_condition = ($category_condition ? " AND " : " WHERE ") . 
                           "ProductName LIKE '%" . mysqli_real_escape_string($conn, $keyscode) . "%'";
    }
    
    // Get total records count using a COUNT query instead of fetching all records
    $count_sql = "SELECT COUNT(*) as total FROM products" . $category_condition . $search_condition;
    $count_result = mysqli_query($conn, $count_sql);
    $count_row = mysqli_fetch_assoc($count_result);
    $total_records = $count_row['total'];
    
    // 固定每页显示18条记录（与 customers.php 保持一致）
    $pageSize = 18;
    $total_pages = ceil($total_records / $pageSize);
    if ($total_pages < 1) $total_pages = 1; // 确保至少有一页，即使没有结果
    
    // Validate page number
    if (empty($page)) $page = 1;
    if ($page == 'end') $page = $total_pages;
    if (!is_numeric($page) || $page < 1) $page = 1;
    $page = (int)$page;
    if ($page > $total_pages) $page = $total_pages;
    
    // Apply pagination
    $offset = ($page - 1) * $pageSize;
    if ($offset < 0) $offset = 0; // 确保偏移量不为负数
    
    // Fetch only the records for the current page
    $sql = "SELECT id, ProductName, ProductImg, category_id FROM products" . 
           $category_condition . $search_condition . " ORDER BY id DESC LIMIT $offset, $pageSize";
    $result = mysqli_query($conn, $sql);
    
    $temp_num = $pageSize * ($page - 1);
    ?>
    <div class="search_panel">
        <form method="get" action="">
            <input type="hidden" name="Page" value="1">
            <div style="display: flex; margin-bottom: 10px;">
                <div style="margin-right: 20px;">
                    <label>按分类筛选:</label>
                    <select name="category_id" class="select1" onchange="this.form.submit()">
                        <option value="0">-- 所有分类 --</option>
                        <?php
                        // Build category tree for filter dropdown
                        $category_data = buildCategoryTree($conn);
                        $cat_tree = $category_data['tree'];
                        
                        // Output options
                        outputCategoryOptions($cat_tree, $filter_category_id);
                        ?>
                    </select>
                </div>
                <div>
                    <label>关键词搜索:</label>
                    <input type="text" name="Keys" value="<?php echo $keyscode; ?>" class="inputTxt" placeholder="请输入产品名称">
                    <input type="submit" value="搜索" class="searchgo">
                </div>
                <div style="margin-left: 20px;">
                    <input type="button" value="+ 新增产品" onClick="location.href='?act=add<?php echo $filter_category_id ? '&category_id='.$filter_category_id : ''; ?>'" class="add_btn" />
                </div>
            </div>
        </form>
    </div>
    <form id="form1" method="post" action="?act=postchk&Keys=<?php echo $keys; ?>&Page=<?php echo $page; ?><?php echo $filter_category_id ? '&category_id='.$filter_category_id : ''; ?>" onSubmit="return false">
        <table width="100%" border="0" cellpadding="3" cellspacing="1" class="table1">
            <thead>
                <tr>
                    <th width="4%"><input type="checkbox" name="chkall" id="chkall" onClick="chkboxall(this,'chkbox')" /></th>
                    <th width="6%">序号</th>
                    <th width="25%">产品名称</th>
                    <th width="15%">产品分类</th>
                    <th width="30%">图片</th>
                    <th width="20%">操作</th>
                </tr>
            </thead>
            <tbody>
            <?php
            if (mysqli_num_rows($result) > 0) {
                $temp_num = $pageSize * ($page - 1);
                while ($row = mysqli_fetch_assoc($result)) {
                    $temp_num++;
                    ?>
                    <tr onMouseOver="this.style.background='#F7FCFF'" onMouseOut="this.style.background='#FFFFFF'">
                        <td align="center"><input type="checkbox" name="chkbox[]" value="<?php echo $row['id']; ?>" /></td>
                        <td align="center"><?php echo $temp_num; ?></td>
                        <td align="center"><?php echo htmlspecialcharsFix($row['ProductName']); ?></td>
                        <td align="center">
                            <?php 
                            require_once 'functions.php';
                            echo getCategoryPath($conn, $row['category_id']); 
                            ?>
                        </td>
                        <td align="center"><img src="<?php echo htmlspecialcharsFix($row['ProductImg']); ?>" width="30px"></td>
                        <td align="center">
                            <a href="?Keys=<?php echo $keys; ?>&Page=<?php echo $page; ?>&act=edit&id=<?php echo $row['id']; ?>" class="ico_edit ico">修改</a>
                        </td>
                    </tr>
                    <?php
                }
            } else {
                ?>
                <tr>
                    <td colspan="9" align="center">
                        <?php echo empty($keys) ? 'Sorry，当前暂无信息' : '<a href="?">Sorry，没有找到"' . htmlspecialcharsFix($keyscode) . '"相关的信息，点击返回</a>'; ?>
                    </td>
                </tr>
                <?php
            }
            ?>
            </tbody>
            <tfoot>
                <tr>
                    <td colspan="9">
                        <div class="showpagebox">
                        <?php
                        if ($total_pages > 1) {
                            // Build page URL with all parameters
                            $page_params = array();
                            if (!empty($keys)) $page_params[] = "Keys=" . urlencode($keys);
                            if ($filter_category_id > 0) $page_params[] = "category_id=" . $filter_category_id;
                            
                            $page_name = "?" . implode("&", $page_params) . ($page_params ? "&" : "");
                            $page_len = 3;
                            
                            // Previous page links
                            if ($page > 1) {
                                echo "<a href=\"{$page_name}Page=1\">首页</a>";
                                echo "<a href=\"{$page_name}Page=" . ($page-1) . "\">上一页</a>";
                            }
                            
                            // Calculate page range
                            if ($page_len * 2 + 1 >= $total_pages) {
                                $start_page = 1;
                                $end_page = $total_pages;
                            } else {
                                if ($page <= $page_len + 1) {
                                    $start_page = 1;
                                    $end_page = $page_len * 2 + 1;
                                } else {
                                    $start_page = $page - $page_len;
                                    $end_page = $page + $page_len;
                                }
                                if ($page + $page_len > $total_pages) {
                                    $start_page = $total_pages - $page_len * 2;
                                    $end_page = $total_pages;
                                }
                            }
                            
                            // Page numbers
                            for ($i = $start_page; $i <= $end_page; $i++) {
                                if ($i == $page) {
                                    echo "<a class=\"current\">$i</a>";
                                } else {
                                    echo "<a href=\"{$page_name}Page=$i\">$i</a>";
                                }
                            }
                            
                            // Next page links
                            if ($page < $total_pages) {
                                if ($total_pages - $page > $page_len) {
                                    echo "<a href=\"{$page_name}Page=$total_pages\">...$total_pages</a>";
                                }
                                echo "<a href=\"{$page_name}Page=" . ($page+1) . "\">下一页</a>";
                                echo "<a href=\"{$page_name}Page=$total_pages\">尾页</a>";
                            }
                            
                            // Jump to page input
                            echo "<input type=\"text\" id=\"Pagego\" value=\"$page\" 
                                  onFocus=\"if(this.value == '$page'){this.value='';}\" 
                                  onBlur=\"if(this.value == ''){this.value='$page';}\" 
                                  onKeyUp=\"this.value=this.value.replace(/\D/g,'')\" 
                                  onKeyDown=\"if(event.keyCode==13){location.href='{$page_name}Page='+document.getElementById('Pagego').value}\" />";
                        }
                        ?>
                        </div>
                        
                        <div class="postchkbox">
                            <select id="chkact" name="chkact">
                                <option value="1">显示</option>
                                <option value="0">隐藏</option>
                                <option value="-1">删除</option>
                            </select>
                            <input type="button" value="执行" onClick="postchk(1)" class="btn1" />
                            <input type="button" value="新增" onClick="location.href='?act=add'" class="btn1" />
                        </div>
                    </td>
                </tr>
            </tfoot>
        </table>
    </form>
    <?php
}
mysqli_close($conn);
?>
</div>
</body>
</html>