在当今数字化服务时代，企业需要一个灵活的售后服务体系来管理客户支持请求。本教程将带领您开发一个WordPress柔性售后服务管理插件，该系统将允许客户提交服务请求、跟踪处理状态，同时让管理员高效管理所有售后事务。

核心功能需求：

1. 客户提交服务请求表单
2. 请求状态跟踪（待处理、处理中、已解决、已关闭）
3. 管理员后台管理界面
4. 邮件通知系统
5. 服务请求分类和优先级管理

首先，我们需要创建插件的基本文件结构。在WordPress的wp-content/plugins/目录下创建新文件夹flexible-after-sales。

创建主插件文件：

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<?php
/**
 * Plugin Name: Flexible After Sales Service Manager
 * Plugin URI: https://yourwebsite.com/
 * Description: 一个灵活的WordPress售后服务管理插件
 * Version: 1.0.0
 * Author: Your Name
 * License: GPL v2 or later
 * Text Domain: flexible-after-sales
 */

// 防止直接访问
if (!defined('ABSPATH')) {
    exit;
}

// 定义插件常量
define('FAS_VERSION', '1.0.0');
define('FAS_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('FAS_PLUGIN_URL', plugin_dir_url(__FILE__));

// 初始化插件
class FlexibleAfterSales {
    
    private static $instance = null;
    
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    private function __construct() {
        $this->init_hooks();
    }
    
    private function init_hooks() {
        // 激活和停用钩子
        register_activation_hook(__FILE__, array($this, 'activate'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate'));
        
        // 初始化
        add_action('init', array($this, 'init'));
        
        // 管理菜单
        add_action('admin_menu', array($this, 'add_admin_menu'));
        
        // 加载文本域
        add_action('plugins_loaded', array($this, 'load_textdomain'));
    }
    
    public function activate() {
        // 创建数据库表
        $this->create_tables();
        
        // 设置默认选项
        $this->set_default_options();
        
        // 刷新重写规则
        flush_rewrite_rules();
    }
    
    public function deactivate() {
        // 清理临时数据
        delete_option('fas_flush_rewrite_rules');
        
        // 刷新重写规则
        flush_rewrite_rules();
    }
    
    public function load_textdomain() {
        load_plugin_textdomain(
            'flexible-after-sales',
            false,
            dirname(plugin_basename(__FILE__)) . '/languages'
        );
    }
    
    public function init() {
        // 初始化代码将在后续步骤中添加
    }
    
    public function add_admin_menu() {
        // 管理菜单代码将在后续步骤中添加
    }
    
    private function create_tables() {
        global $wpdb;
        
        $charset_collate = $wpdb->get_charset_collate();
        $table_name = $wpdb->prefix . 'fas_service_requests';
        
        $sql = "CREATE TABLE IF NOT EXISTS $table_name (
            id mediumint(9) NOT NULL AUTO_INCREMENT,
            customer_name varchar(100) NOT NULL,
            customer_email varchar(100) NOT NULL,
            product_name varchar(200) NOT NULL,
            issue_type varchar(50) NOT NULL,
            description text NOT NULL,
            priority tinyint(1) DEFAULT 2,
            status varchar(20) DEFAULT 'pending',
            assigned_to bigint(20) DEFAULT 0,
            created_at datetime DEFAULT CURRENT_TIMESTAMP,
            updated_at datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
            PRIMARY KEY (id)
        ) $charset_collate;";
        
        require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
        dbDelta($sql);
    }
    
    private function set_default_options() {
        if (!get_option('fas_settings')) {
            $default_settings = array(
                'email_notifications' => 1,
                'default_priority' => 2,
                'auto_assign' => 0,
                'support_email' => get_option('admin_email')
            );
            update_option('fas_settings', $default_settings);
        }
    }
}

// 启动插件
FlexibleAfterSales::get_instance();
?>

创建服务请求管理类：

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<?php
// 文件路径: includes/class-service-request.php

if (!defined('ABSPATH')) {
    exit;
}

class FAS_Service_Request {
    
    private $db;
    private $table_name;
    
    public function __construct() {
        global $wpdb;
        $this->db = $wpdb;
        $this->table_name = $wpdb->prefix . 'fas_service_requests';
    }
    
    /**
     * 创建新的服务请求
     * @param array $data 请求数据
     * @return int|false 插入ID或false
     */
    public function create($data) {
        $defaults = array(
            'customer_name' => '',
            'customer_email' => '',
            'product_name' => '',
            'issue_type' => 'general',
            'description' => '',
            'priority' => 2,
            'status' => 'pending',
            'assigned_to' => 0
        );
        
        $data = wp_parse_args($data, $defaults);
        
        // 验证必要字段
        if (empty($data['customer_name']) || empty($data['customer_email']) || empty($data['description'])) {
            return false;
        }
        
        // 插入数据
        $result = $this->db->insert(
            $this->table_name,
            array(
                'customer_name' => sanitize_text_field($data['customer_name']),
                'customer_email' => sanitize_email($data['customer_email']),
                'product_name' => sanitize_text_field($data['product_name']),
                'issue_type' => sanitize_text_field($data['issue_type']),
                'description' => wp_kses_post($data['description']),
                'priority' => absint($data['priority']),
                'status' => sanitize_text_field($data['status']),
                'assigned_to' => absint($data['assigned_to'])
            ),
            array('%s', '%s', '%s', '%s', '%s', '%d', '%s', '%d')
        );
        
        if ($result) {
            $request_id = $this->db->insert_id;
            
            // 发送通知邮件
            $this->send_notification_email($request_id, 'new_request');
            
            return $request_id;
        }
        
        return false;
    }
    
    /**
     * 获取服务请求
     * @param int $id 请求ID
     * @return object|null 请求对象或null
     */
    public function get($id) {
        $query = $this->db->prepare(
            "SELECT * FROM {$this->table_name} WHERE id = %d",
            $id
        );
        
        return $this->db->get_row($query);
    }
    
    /**
     * 更新服务请求
     * @param int $id 请求ID
     * @param array $data 更新数据
     * @return bool 是否成功
     */
    public function update($id, $data) {
        $allowed_fields = array(
            'customer_name',
            'customer_email',
            'product_name',
            'issue_type',
            'description',
            'priority',
            'status',
            'assigned_to'
        );
        
        $update_data = array();
        $format = array();
        
        foreach ($data as $key => $value) {
            if (in_array($key, $allowed_fields)) {
                $update_data[$key] = $value;
                
                // 设置格式
                if (in_array($key, array('priority', 'assigned_to'))) {
                    $format[] = '%d';
                } else {
                    $format[] = '%s';
                }
            }
        }
        
        if (empty($update_data)) {
            return false;
        }
        
        $result = $this->db->update(
            $this->table_name,
            $update_data,
            array('id' => $id),
            $format,
            array('%d')
        );
        
        return $result !== false;
    }
    
    /**
     * 获取所有服务请求
     * @param array $args 查询参数
     * @return array 请求数组
     */
    public function get_all($args = array()) {
        $defaults = array(
            'status' => '',
            'priority' => 0,
            'per_page' => 20,
            'page' => 1,
            'orderby' => 'created_at',
            'order' => 'DESC'
        );
        
        $args = wp_parse_args($args, $defaults);
        
        $where = array('1=1');
        $values = array();
        
        // 状态筛选
        if (!empty($args['status'])) {
            $where[] = 'status = %s';
            $values[] = $args['status'];
        }
        
        // 优先级筛选
        if ($args['priority'] > 0) {
            $where[] = 'priority = %d';
            $values[] = $args['priority'];
        }
        
        $where_clause = implode(' AND ', $where);
        
        // 分页计算
        $offset = ($args['page'] - 1) * $args['per_page'];
        
        // 构建查询
        $query = "SELECT * FROM {$this->table_name} WHERE {$where_clause}";
        
        if (!empty($values)) {
            $query = $this->db->prepare($query, $values);
        }
        
        $query .= " ORDER BY {$args['orderby']} {$args['order']}";
        $query .= " LIMIT {$args['per_page']} OFFSET {$offset}";
        
        return $this->db->get_results($query);
    }
    
    /**
     * 发送通知邮件
     * @param int $request_id 请求ID
     * @param string $type 邮件类型
     */
    private function send_notification_email($request_id, $type) {
        $settings = get_option('fas_settings');
        
        if (!$settings['email_notifications']) {
            return;
        }
        
        $request = $this->get($request_id);
        
        if (!$request) {
            return;
        }
        
        $to = $settings['support_email'];
        $subject = '';
        $message = '';
        
        switch ($type) {
            case 'new_request':
                $subject = sprintf(__('新的服务请求 #%d', 'flexible-after-sales'), $request_id);
                $message = $this->get_email_template('new_request', $request);
                break;
                
            case 'status_update':
                $subject = sprintf(__('服务请求 #%d 状态更新', 'flexible-after-sales'), $request_id);
                $message = $this->get_email_template('status_update', $request);
                break;
        }
        
        if (!empty($subject) && !empty($message)) {
            wp_mail($to, $subject, $message, array('Content-Type: text/html; charset=UTF-8'));
        }
    }
    
    /**
     * 获取邮件模板
     * @param string $template 模板名称
     * @param object $request 请求对象
     * @return string 邮件内容
     */
    private function get_email_template($template, $request) {
        ob_start();
        include FAS_PLUGIN_DIR . 'templates/emails/' . $template . '.php';
        return ob_get_clean();
    }
}
?>

创建服务请求提交表单：

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<?php
// 文件路径: includes/class-frontend-form.php

if (!defined('ABSPATH')) {
    exit;
}

class FAS_Frontend_Form {
    
    public function __construct() {
        add_shortcode('fas_service_form', array($this, 'render_form'));
        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'));
        add_action('wp_ajax_fas_submit_request', array($this, 'handle_submission'));
        add_action('wp_ajax_nopriv_fas_submit_request', array($this, 'handle_submission'));
    }
    
    public function enqueue_scripts() {
        wp_enqueue_style(
            'fas-frontend',
            FAS_PLUGIN_URL . 'assets/css/frontend.css',
            array(),
            FAS_VERSION
        );
        
        wp_enqueue_script(
            'fas-frontend',
            FAS_PLUGIN_URL . 'assets/js/frontend.js',
            array('jquery'),
            FAS_VERSION,
            true
        );
        
        wp_localize_script('fas-frontend', 'fas_ajax', array(
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('fas_submit_request')
        ));
    }
    
    public function render_form() {
        ob_start();
        ?>
        <div class="fas-service-form-container">
            <form id="fas-service-form" class="fas-form">
                <div class="fas-form-group">
                    <label for="customer_name"><?php _e('姓名', 'flexible-after-sales'); ?> *</label>
                    <input type="text" id="customer_name" name="customer_name" required>
                </div>
                
                <div class="fas-form-group">
                    <label for="customer_email"><?php _e('邮箱', 'flexible-after-sales'); ?> *</label>
                    <input type="email" id="customer_email" name="customer_email" required>
                </div>
                
                <div class="fas-form-group">
                    <label for="product_name"><?php _e('产品名称', 'flexible-after-sales'); ?></label>
                    <input type="text" id="product_name" name="product_name">
                </div>
                
                <div class="fas-form-group">
                    <label for="issue_type"><?php _e('问题类型', 'flexible-after-sales'); ?></label>
                    <select id="issue_type" name="issue_type">
                        <option value="technical"><?php _e('技术问题', 'flexible-after-sales'); ?></option>
                        <option value="billing"><?php _e('账单问题', 'flexible-after-sales'); ?></option>
                        <option value="refund"><?php _e('退款问题', 'flexible-after-sales'); ?></option>
                        <option value="general"><?php _e('一般咨询', 'flexible-after-sales'); ?></option>
                    </select>
                </div>
                
                <div class="fas-form-group">
                    <label for="priority"><?php _e('优先级', 'flexible-after-sales'); ?></label>
                    <select id="priority" name="priority">
                        <option value="1"><?php _e('低', 'flexible-after-sales'); ?></option>
                        <option value="2" selected><?php _e('中', 'flexible-after-sales'); ?></option>
                        <option value="3"><?php _e('高', 'flexible-after-sales'); ?></option>
                        <option value="4"><?php _e('紧急', 'flexible-after-sales'); ?></option>
                    </select>
                </div>
                
                <div class="fas-form-group">
                    <label for="description"><?php _e('问题描述', 'flexible-after-sales'); ?> *</label>
                    <textarea id="description" name="description" rows="5" required></textarea>
                </div>
                
                <div class="fas-form-group">
                    <button type="submit" class="fas-submit-btn">
                        <?php _e('提交请求', 'flexible-after-sales'); ?>
                    </button>
                    <div class="fas-loading" style="display:none;">
                        <?php _e('提交中...', 'flexible-after-sales'); ?>
                    </div>
                </div>
                
                <div class="fas-message"></div>
            </form>
        </div>
        <?php
        return ob_get_clean();
    }
    
    public function handle_submission() {
        // 验证nonce
        if (!wp_verify_nonce($_POST['nonce'], 'fas_submit_request')) {
            wp_die(__('安全验证失败', 'flexible-after-sales'));
        }
        
        // 验证数据
        $data = array(
            'customer_name' => sanitize_text_field($_POST['customer_name']),
            'customer_email' => sanitize_email($_POST['customer_email']),
            'product_name' => sanitize_text_field($_POST['product_name']),
            'issue_type' => sanitize_text_field($_POST['issue_type']),
            'priority' => absint($_POST['priority']),
            'description' => wp_kses_post($_POST['description'])
        );
        
        // 创建服务请求
        $service_request = new FAS_Service_Request();
        $request_id = $service_request->create($data);
        
        if ($request_id) {
            wp_send_json_success(array(
                'message' => sprintf(__('请求提交成功！您的请求编号是：%d', 'flexible-after-sales'), $request_id),
                'request_id' => $request_id
            ));
        } else {
            wp_send_json_error(array(
                'message' => __('提交失败，请稍后重试', 'flexible-after-sales')
            ));
        }
    }
}
?>

创建管理后台页面：

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<?php
// 文件路径: includes/class-admin-dashboard.php

if (!defined('ABSPATH')) {
    exit;
}

class FAS_Admin_Dashboard {
    
    public function __construct() {
        add_action('admin_menu', array($this, 'add_admin_pages'));
        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'));

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<?php
// 文件路径: includes/class-admin-dashboard.php（续）

    public function add_admin_pages() {
        // 主菜单
        add_menu_page(
            __('售后服务管理', 'flexible-after-sales'),
            __('售后服务', 'flexible-after-sales'),
            'manage_options',
            'fas-dashboard',
            array($this, 'render_dashboard'),
            'dashicons-businessman',
            30
        );
        
        // 子菜单
        add_submenu_page(
            'fas-dashboard',
            __('所有服务请求', 'flexible-after-sales'),
            __('所有请求', 'flexible-after-sales'),
            'manage_options',
            'fas-requests',
            array($this, 'render_requests_page')
        );
        
        add_submenu_page(
            'fas-dashboard',
            __('插件设置', 'flexible-after-sales'),
            __('设置', 'flexible-after-sales'),
            'manage_options',
            'fas-settings',
            array($this, 'render_settings_page')
        );
        
        add_submenu_page(
            'fas-dashboard',
            __('统计报告', 'flexible-after-sales'),
            __('报告', 'flexible-after-sales'),
            'manage_options',
            'fas-reports',
            array($this, 'render_reports_page')
        );
    }
    
    public function enqueue_admin_scripts($hook) {
        if (strpos($hook, 'fas-') === false) {
            return;
        }
        
        wp_enqueue_style(
            'fas-admin',
            FAS_PLUGIN_URL . 'assets/css/admin.css',
            array(),
            FAS_VERSION
        );
        
        wp_enqueue_script(
            'fas-admin',
            FAS_PLUGIN_URL . 'assets/js/admin.js',
            array('jquery', 'jquery-ui-datepicker'),
            FAS_VERSION,
            true
        );
        
        wp_enqueue_style('jquery-ui-css', 'https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css');
    }
    
    public function render_dashboard() {
        $service_request = new FAS_Service_Request();
        
        // 获取统计数据
        $stats = $this->get_dashboard_stats();
        
        ?>
        <div class="wrap fas-admin-dashboard">
            <h1><?php _e('售后服务管理面板', 'flexible-after-sales'); ?></h1>
            
            <div class="fas-stats-container">
                <div class="fas-stat-card">
                    <h3><?php _e('待处理', 'flexible-after-sales'); ?></h3>
                    <div class="fas-stat-number"><?php echo $stats['pending']; ?></div>
                </div>
                
                <div class="fas-stat-card">
                    <h3><?php _e('处理中', 'flexible-after-sales'); ?></h3>
                    <div class="fas-stat-number"><?php echo $stats['in_progress']; ?></div>
                </div>
                
                <div class="fas-stat-card">
                    <h3><?php _e('已解决', 'flexible-after-sales'); ?></h3>
                    <div class="fas-stat-number"><?php echo $stats['resolved']; ?></div>
                </div>
                
                <div class="fas-stat-card">
                    <h3><?php _e('总计', 'flexible-after-sales'); ?></h3>
                    <div class="fas-stat-number"><?php echo $stats['total']; ?></div>
                </div>
            </div>
            
            <div class="fas-recent-requests">
                <h2><?php _e('最近的请求', 'flexible-after-sales'); ?></h2>
                <?php $this->render_requests_table(array('per_page' => 10)); ?>
            </div>
        </div>
        <?php
    }
    
    public function render_requests_page() {
        ?>
        <div class="wrap fas-requests-page">
            <h1><?php _e('服务请求管理', 'flexible-after-sales'); ?></h1>
            
            <div class="fas-filters">
                <form method="get" action="">
                    <input type="hidden" name="page" value="fas-requests">
                    
                    <select name="status">
                        <option value=""><?php _e('所有状态', 'flexible-after-sales'); ?></option>
                        <option value="pending" <?php selected(isset($_GET['status']) && $_GET['status'] == 'pending'); ?>>
                            <?php _e('待处理', 'flexible-after-sales'); ?>
                        </option>
                        <option value="in_progress" <?php selected(isset($_GET['status']) && $_GET['status'] == 'in_progress'); ?>>
                            <?php _e('处理中', 'flexible-after-sales'); ?>
                        </option>
                        <option value="resolved" <?php selected(isset($_GET['status']) && $_GET['status'] == 'resolved'); ?>>
                            <?php _e('已解决', 'flexible-after-sales'); ?>
                        </option>
                        <option value="closed" <?php selected(isset($_GET['status']) && $_GET['status'] == 'closed'); ?>>
                            <?php _e('已关闭', 'flexible-after-sales'); ?>
                        </option>
                    </select>
                    
                    <select name="priority">
                        <option value="0"><?php _e('所有优先级', 'flexible-after-sales'); ?></option>
                        <option value="1" <?php selected(isset($_GET['priority']) && $_GET['priority'] == 1); ?>>
                            <?php _e('低', 'flexible-after-sales'); ?>
                        </option>
                        <option value="2" <?php selected(isset($_GET['priority']) && $_GET['priority'] == 2); ?>>
                            <?php _e('中', 'flexible-after-sales'); ?>
                        </option>
                        <option value="3" <?php selected(isset($_GET['priority']) && $_GET['priority'] == 3); ?>>
                            <?php _e('高', 'flexible-after-sales'); ?>
                        </option>
                        <option value="4" <?php selected(isset($_GET['priority']) && $_GET['priority'] == 4); ?>>
                            <?php _e('紧急', 'flexible-after-sales'); ?>
                        </option>
                    </select>
                    
                    <input type="submit" class="button" value="<?php _e('筛选', 'flexible-after-sales'); ?>">
                    <a href="?page=fas-requests" class="button"><?php _e('重置', 'flexible-after-sales'); ?></a>
                </form>
            </div>
            
            <?php $this->render_requests_table(); ?>
        </div>
        <?php
    }
    
    private function render_requests_table($args = array()) {
        $service_request = new FAS_Service_Request();
        
        $defaults = array(
            'status' => isset($_GET['status']) ? sanitize_text_field($_GET['status']) : '',
            'priority' => isset($_GET['priority']) ? absint($_GET['priority']) : 0,
            'per_page' => 20,
            'page' => isset($_GET['paged']) ? max(1, absint($_GET['paged'])) : 1
        );
        
        $args = wp_parse_args($args, $defaults);
        $requests = $service_request->get_all($args);
        
        ?>
        <table class="wp-list-table widefat fixed striped fas-requests-table">
            <thead>
                <tr>
                    <th><?php _e('ID', 'flexible-after-sales'); ?></th>
                    <th><?php _e('客户', 'flexible-after-sales'); ?></th>
                    <th><?php _e('产品', 'flexible-after-sales'); ?></th>
                    <th><?php _e('问题类型', 'flexible-after-sales'); ?></th>
                    <th><?php _e('优先级', 'flexible-after-sales'); ?></th>
                    <th><?php _e('状态', 'flexible-after-sales'); ?></th>
                    <th><?php _e('创建时间', 'flexible-after-sales'); ?></th>
                    <th><?php _e('操作', 'flexible-after-sales'); ?></th>
                </tr>
            </thead>
            <tbody>
                <?php if (empty($requests)): ?>
                    <tr>
                        <td colspan="8"><?php _e('没有找到服务请求', 'flexible-after-sales'); ?></td>
                    </tr>
                <?php else: ?>
                    <?php foreach ($requests as $request): ?>
                        <tr>
                            <td>#<?php echo $request->id; ?></td>
                            <td>
                                <strong><?php echo esc_html($request->customer_name); ?></strong><br>
                                <small><?php echo esc_html($request->customer_email); ?></small>
                            </td>
                            <td><?php echo esc_html($request->product_name); ?></td>
                            <td><?php echo $this->get_issue_type_label($request->issue_type); ?></td>
                            <td><?php echo $this->get_priority_badge($request->priority); ?></td>
                            <td><?php echo $this->get_status_badge($request->status); ?></td>
                            <td><?php echo date_i18n(get_option('date_format'), strtotime($request->created_at)); ?></td>
                            <td>
                                <a href="?page=fas-requests&action=view&id=<?php echo $request->id; ?>" 
                                   class="button button-small">
                                    <?php _e('查看', 'flexible-after-sales'); ?>
                                </a>
                                <a href="?page=fas-requests&action=edit&id=<?php echo $request->id; ?>" 
                                   class="button button-small">
                                    <?php _e('编辑', 'flexible-after-sales'); ?>
                                </a>
                            </td>
                        </tr>
                    <?php endforeach; ?>
                <?php endif; ?>
            </tbody>
        </table>
        
        <?php
        // 这里可以添加分页代码
    }
    
    private function get_dashboard_stats() {
        global $wpdb;
        $table_name = $wpdb->prefix . 'fas_service_requests';
        
        $stats = array(
            'pending' => 0,
            'in_progress' => 0,
            'resolved' => 0,
            'total' => 0
        );
        
        // 获取各状态数量
        $results = $wpdb->get_results("
            SELECT status, COUNT(*) as count 
            FROM {$table_name} 
            GROUP BY status
        ");
        
        foreach ($results as $row) {
            if (isset($stats[$row->status])) {
                $stats[$row->status] = $row->count;
            }
            $stats['total'] += $row->count;
        }
        
        return $stats;
    }
    
    private function get_priority_badge($priority) {
        $labels = array(
            1 => array('label' => __('低', 'flexible-after-sales'), 'class' => 'priority-low'),
            2 => array('label' => __('中', 'flexible-after-sales'), 'class' => 'priority-medium'),
            3 => array('label' => __('高', 'flexible-after-sales'), 'class' => 'priority-high'),
            4 => array('label' => __('紧急', 'flexible-after-sales'), 'class' => 'priority-urgent')
        );
        
        if (isset($labels[$priority])) {
            return sprintf('<span class="fas-badge %s">%s</span>', 
                $labels[$priority]['class'], 
                $labels[$priority]['label']
            );
        }
        
        return '';
    }
    
    private function get_status_badge($status) {
        $labels = array(
            'pending' => array('label' => __('待处理', 'flexible-after-sales'), 'class' => 'status-pending'),
            'in_progress' => array('label' => __('处理中', 'flexible-after-sales'), 'class' => 'status-in-progress'),
            'resolved' => array('label' => __('已解决', 'flexible-after-sales'), 'class' => 'status-resolved'),
            'closed' => array('label' => __('已关闭', 'flexible-after-sales'), 'class' => 'status-closed')
        );
        
        if (isset($labels[$status])) {
            return sprintf('<span class="fas-badge %s">%s</span>', 
                $labels[$status]['class'], 
                $labels[$status]['label']
            );
        }
        
        return '';
    }
    
    private function get_issue_type_label($type) {
        $labels = array(
            'technical' => __('技术问题', 'flexible-after-sales'),
            'billing' => __('账单问题', 'flexible-after-sales'),
            'refund' => __('退款问题', 'flexible-after-sales'),
            'general' => __('一般咨询', 'flexible-after-sales')
        );
        
        return isset($labels[$type]) ? $labels[$type] : $type;
    }
}
?>

复制

<?php
// 文件路径: includes/class-settings.php

if (!defined('ABSPATH')) {
    exit;
}

class FAS_Settings {
    
    public function __construct() {
        add_action('admin_init', array($this, 'register_settings'));
    }
    
    public function register_settings() {
        register_setting('fas_settings_group', 'fas_settings', array($this, 'sanitize_settings'));
        
        // 常规设置
        add_settings_section(
            'fas_general_section',
            __('常规设置', 'flexible-after-sales'),
            array($this, 'render_general_section'),
            'fas_settings'
        );
        
        add_settings_field(
            'email_notifications',
            __('邮件通知', 'flexible-after-sales'),
            array($this, 'render_email_notifications_field'),
            'fas_settings',
            'fas_general_section'
        );
        
        add_settings_field(
            'support_email',
            __('支持邮箱', 'flexible-after-sales'),
            array($this, 'render_support_email_field'),
            'fas_settings',
            'fas_general_section'
        );
        
        add_settings_field(
            'default_priority',
            __('默认优先级', 'flexible-after-sales'),
            array($this, 'render_default_priority_field'),
            'fas_settings',
            'fas_general_section'
        );
        
        // 高级设置
        add_settings_section(
            'fas_advanced_section',
            __('高级设置', 'flexible-after-sales'),
            array($this, 'render_advanced_section'),
            'fas_settings'
        );
        
        add_settings_field(
            'auto_assign',
            __('自动分配', 'flexible-after-sales'),
            array($this, 'render_auto_assign_field'),
            'fas_settings',
            'fas_advanced_section'
        );
        
        add_settings_field(
            'allowed_users',
            __('允许的管理员', 'flexible-after-sales'),
            array($this, 'render_allowed_users_field'),
            'fas_settings',
            'fas_advanced_section'
        );
    }
    
    public function sanitize_settings($input) {
        $sanitized = array();
        
        // 邮件通知
        $sanitized['email_notifications'] = isset($input['email_notifications']) ? 1 : 0;
        
        // 支持邮箱
        $sanitized['support_email'] = sanitize_email($input['support_email']);
        if (!is_email($sanitized['support_email'])) {
            $sanitized['support_email'] = get_option('admin_email');
        }
        
        // 默认优先级
        $sanitized['default_priority'] = absint($input['default_priority']);
        if ($sanitized['default_priority'] < 1 || $sanitized['default_priority'] > 4) {
            $sanitized['default_priority'] = 2;
        }
        
        // 自动分配
        $sanitized['auto_assign'] = isset($input['auto_assign']) ? 1 : 0;
        
        // 允许的用户
        $sanitized['allowed_users'] = array();
        if (isset($input['allowed_users']) && is_array($input['allowed_users'])) {
            foreach ($input['allowed_users'] as $user_id) {
                $user_id = absint($user_id);
                if ($user_id > 0) {
                    $sanitized['allowed_users'][] = $user_id;
                }
            }
        }
        
        return $sanitized;
    }
    
    public function render_general_section() {
        echo '<p>' . __('配置插件的基本设置', 'flexible-after-sales') . '</p>';
    }
    
    public function render_advanced_section() {
        echo '<p>' . __('高级功能配置', 'flexible-after-sales') . '</p>';
    }
    
    public function render_email_notifications_field() {
        $settings = get_option('fas_settings');
        $checked = isset($settings['email_notifications']) && $settings['email_notifications'] ? 'checked' : '';
        
        echo '<label>';
        echo '<input type="checkbox" name="fas_settings[email_notifications]" value="1" ' . $checked . '>';
        echo __('启用新请求邮件通知', 'flexible-after-sales');
        echo '</label>';
        echo '<p class="description">' . __('当有新服务请求时发送邮件通知', 'flexible-after-sales') . '</p>';
    }
    
    public function render_support_email_field() {
        $settings = get_option('fas_settings');
        $value = isset($settings['support_email']) ? $settings['support_email'] : get_option('admin_email');
        
        echo '<input type="email" name="fas_settings[support_email]" value="' . esc_attr($value) . '" class="regular-text">';
        echo '<p class="description">' . __('接收通知的邮箱地址', 'flexible-after-sales') . '</p>';
    }
    
    public function render_default_priority_field() {
        $settings = get_option('fas_settings');
        $value = isset($settings['default_priority']) ? $settings['default_priority'] : 2;
        
        echo '<select name="fas_settings[default_priority]">';