在现代生产制造企业中，任务派工是生产管理的核心环节。本教程将指导您开发一个WordPress定制插件，实现小批量生产任务的智能派工系统。该系统能够根据员工技能、工作负荷和任务优先级自动分配生产任务，提高生产效率。

首先，我们需要创建插件的基本文件结构：

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<?php
/**
 * Plugin Name: 智能生产任务派工系统
 * Plugin URI: https://yourwebsite.com/
 * Description: 小批量生产任务智能派工解决方案
 * Version: 1.0.0
 * Author: 您的名称
 * License: GPL v2 or later
 */

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

// 定义插件常量
define('SPA_PLUGIN_PATH', plugin_dir_path(__FILE__));
define('SPA_PLUGIN_URL', plugin_dir_url(__FILE__));
define('SPA_VERSION', '1.0.0');

// 初始化插件
class Smart_Production_Assignment {
    
    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/停用插件时的操作
        register_activation_hook(__FILE__, array($this, 'activate_plugin'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate_plugin'));
        
        // 初始化
        add_action('init', array($this, 'init'));
        
        // 管理菜单
        add_action('admin_menu', array($this, 'add_admin_menu'));
        
        // 加载脚本和样式
        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'));
    }
    
    public function activate_plugin() {
        $this->create_tables();
        $this->insert_default_data();
    }
    
    public function deactivate_plugin() {
        // 清理临时数据（可选）
    }
    
    public function init() {
        // 初始化代码
    }
    
    // 其他方法将在下面逐步实现
}

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

智能派工系统需要存储员工信息、任务数据和派工记录：

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// 在activate_plugin方法中调用
private function create_tables() {
    global $wpdb;
    
    $charset_collate = $wpdb->get_charset_collate();
    
    // 员工技能表
    $table_employees = $wpdb->prefix . 'spa_employees';
    $sql_employees = "CREATE TABLE IF NOT EXISTS $table_employees (
        id INT(11) NOT NULL AUTO_INCREMENT,
        name VARCHAR(100) NOT NULL,
        skill_level TINYINT(3) DEFAULT 1 COMMENT '技能等级 1-5',
        current_workload INT(11) DEFAULT 0 COMMENT '当前工作量',
        max_daily_tasks INT(11) DEFAULT 5 COMMENT '每日最大任务数',
        specialization VARCHAR(100) COMMENT '专长领域',
        is_active TINYINT(1) DEFAULT 1,
        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (id)
    ) $charset_collate;";
    
    // 生产任务表
    $table_tasks = $wpdb->prefix . 'spa_tasks';
    $sql_tasks = "CREATE TABLE IF NOT EXISTS $table_tasks (
        id INT(11) NOT NULL AUTO_INCREMENT,
        task_name VARCHAR(200) NOT NULL,
        description TEXT,
        required_skill TINYINT(3) DEFAULT 1 COMMENT '所需技能等级',
        estimated_time INT(11) COMMENT '预计耗时(分钟)',
        priority TINYINT(2) DEFAULT 2 COMMENT '优先级 1-高 2-中 3-低',
        status TINYINT(1) DEFAULT 0 COMMENT '0-待分配 1-已分配 2-进行中 3-已完成',
        product_type VARCHAR(100),
        batch_size INT(11) COMMENT '批次大小',
        deadline DATE,
        assigned_to INT(11),
        assigned_at DATETIME,
        completed_at DATETIME,
        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (id),
        KEY idx_status (status),
        KEY idx_priority (priority),
        KEY idx_assigned_to (assigned_to)
    ) $charset_collate;";
    
    // 派工记录表
    $table_assignments = $wpdb->prefix . 'spa_assignments';
    $sql_assignments = "CREATE TABLE IF NOT EXISTS $table_assignments (
        id INT(11) NOT NULL AUTO_INCREMENT,
        task_id INT(11) NOT NULL,
        employee_id INT(11) NOT NULL,
        assigned_by INT(11) COMMENT '分配人用户ID',
        assignment_type TINYINT(1) DEFAULT 1 COMMENT '1-自动 2-手动',
        assignment_score FLOAT COMMENT '分配匹配度评分',
        notes TEXT,
        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (id),
        KEY idx_task_id (task_id),
        KEY idx_employee_id (employee_id)
    ) $charset_collate;";
    
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql_employees);
    dbDelta($sql_tasks);
    dbDelta($sql_assignments);
}

核心的智能派工算法根据多个因素计算最佳匹配：

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class TaskAssignmentAlgorithm {
    
    /**
     * 智能派工主函数
     * @param int $task_id 任务ID
     * @return array 分配结果
     */
    public function intelligent_assignment($task_id) {
        global $wpdb;
        
        // 获取任务详情
        $task = $this->get_task_details($task_id);
        if (!$task) {
            return array('success' => false, 'message' => '任务不存在');
        }
        
        // 获取可用员工
        $available_employees = $this->get_available_employees();
        
        if (empty($available_employees)) {
            return array('success' => false, 'message' => '没有可用员工');
        }
        
        // 计算每个员工的匹配分数
        $employee_scores = array();
        foreach ($available_employees as $employee) {
            $score = $this->calculate_match_score($task, $employee);
            $employee_scores[$employee['id']] = array(
                'employee' => $employee,
                'score' => $score
            );
        }
        
        // 按分数排序
        uasort($employee_scores, function($a, $b) {
            return $b['score'] <=> $a['score'];
        });
        
        // 选择最佳员工
        $best_match = reset($employee_scores);
        $best_employee_id = $best_match['employee']['id'];
        
        // 分配任务
        $result = $this->assign_task_to_employee($task_id, $best_employee_id, $best_match['score']);
        
        return array(
            'success' => true,
            'employee_id' => $best_employee_id,
            'employee_name' => $best_match['employee']['name'],
            'match_score' => round($best_match['score'], 2),
            'assignment_id' => $result['assignment_id']
        );
    }
    
    /**
     * 计算任务与员工的匹配分数
     * @param array $task 任务数据
     * @param array $employee 员工数据
     * @return float 匹配分数(0-100)
     */
    private function calculate_match_score($task, $employee) {
        $total_score = 0;
        $weights = array(
            'skill' => 0.35,      // 技能匹配权重
            'workload' => 0.25,   // 工作负荷权重
            'specialization' => 0.20, // 专长匹配权重
            'efficiency' => 0.20   // 效率权重
        );
        
        // 1. 技能匹配度 (0-35分)
        $skill_score = $this->calculate_skill_score($task['required_skill'], $employee['skill_level']);
        $total_score += $skill_score * $weights['skill'];
        
        // 2. 工作负荷评分 (0-25分)
        $workload_score = $this->calculate_workload_score($employee);
        $total_score += $workload_score * $weights['workload'];
        
        // 3. 专长匹配度 (0-20分)
        $specialization_score = $this->calculate_specialization_score($task, $employee);
        $total_score += $specialization_score * $weights['specialization'];
        
        // 4. 历史效率评分 (0-20分)
        $efficiency_score = $this->calculate_efficiency_score($employee['id']);
        $total_score += $efficiency_score * $weights['efficiency'];
        
        return $total_score;
    }
    
    /**
     * 计算技能匹配分数
     */
    private function calculate_skill_score($required_skill, $employee_skill) {
        if ($employee_skill >= $required_skill) {
            // 技能达标，计算超出部分的奖励
            $base_score = 30;
            $bonus = min(5, ($employee_skill - $required_skill) * 2);
            return $base_score + $bonus;
        } else {
            // 技能不足，按比例扣分
            $ratio = $employee_skill / $required_skill;
            return 30 * $ratio;
        }
    }
    
    /**
     * 计算工作负荷分数
     */
    private function calculate_workload_score($employee) {
        $workload_ratio = $employee['current_workload'] / $employee['max_daily_tasks'];
        
        if ($workload_ratio < 0.5) {
            return 25; // 工作负荷轻，满分
        } elseif ($workload_ratio < 0.8) {
            return 20; // 工作负荷适中
        } elseif ($workload_ratio < 1.0) {
            return 10; // 工作负荷较重
        } else {
            return 0;  // 工作负荷已满
        }
    }
    
    /**
     * 计算专长匹配分数
     */
    private function calculate_specialization_score($task, $employee) {
        if (empty($employee['specialization']) || empty($task['product_type'])) {
            return 10; // 默认分数
        }
        
        // 简单的关键词匹配
        $employee_specializations = explode(',', $employee['specialization']);
        $task_type = strtolower($task['product_type']);
        
        foreach ($employee_specializations as $specialization) {
            if (strpos($task_type, strtolower(trim($specialization))) !== false) {
                return 20; // 完全匹配
            }
        }
        
        return 10; // 不匹配
    }
    
    /**
     * 计算效率分数（基于历史完成时间）
     */
    private function calculate_efficiency_score($employee_id) {
        global $wpdb;
        
        $table_tasks = $wpdb->prefix . 'spa_tasks';
        
        // 获取员工最近完成的任务
        $query = $wpdb->prepare(
            "SELECT estimated_time, 
                    TIMESTAMPDIFF(MINUTE, assigned_at, completed_at) as actual_time
             FROM $table_tasks 
             WHERE assigned_to = %d 
             AND status = 3 
             AND estimated_time IS NOT NULL
             ORDER BY completed_at DESC 
             LIMIT 10",
            $employee_id
        );
        
        $results = $wpdb->get_results($query, ARRAY_A);
        
        if (empty($results)) {
            return 15; // 默认分数，没有历史数据
        }
        
        $total_efficiency = 0;
        $count = 0;
        
        foreach ($results as $task) {
            if ($task['actual_time'] > 0) {
                $efficiency = $task['estimated_time'] / $task['actual_time'];
                $total_efficiency += min(1.5, max(0.5, $efficiency)); // 限制范围
                $count++;
            }
        }
        
        if ($count > 0) {
            $avg_efficiency = $total_efficiency / $count;
            // 将效率转换为分数 (0.5-1.5 映射到 0-20分)
            return ($avg_efficiency - 0.5) * 20;
        }
        
        return 15;
    }
    
    /**
     * 获取可用员工列表
     */
    private function get_available_employees() {
        global $wpdb;
        
        $table_employees = $wpdb->prefix . 'spa_employees';
        
        $query = "SELECT * FROM $table_employees 
                  WHERE is_active = 1 
                  AND current_workload < max_daily_tasks
                  ORDER BY current_workload ASC";
        
        return $wpdb->get_results($query, ARRAY_A);
    }
    
    /**
     * 执行任务分配
     */
    private function assign_task_to_employee($task_id, $employee_id, $match_score) {
        global $wpdb;
        
        $wpdb->query('START TRANSACTION');
        
        try {
            // 更新任务状态
            $table_tasks = $wpdb->prefix . 'spa_tasks';
            $wpdb->update(
                $table_tasks,
                array(
                    'status' => 1,
                    'assigned_to' => $employee_id,
                    'assigned_at' => current_time('mysql')
                ),
                array('id' => $task_id),
                array('%d', '%d', '%s'),
                array('%d')
            );
            
            // 创建分配记录
            $table_assignments = $wpdb->prefix . 'spa_assignments';
            $wpdb->insert(
                $table_assignments,
                array(
                    'task_id' => $task_id,
                    'employee_id' => $employee_id,
                    'assigned_by' => get_current_user_id(),
                    'assignment_type' => 1,
                    'assignment_score' => $match_score,
                    'notes' => '系统智能分配'
                ),
                array('%d', '%d', '%d', '%d', '%f', '%s')
            );
            
            $assignment_id = $wpdb->insert_id;
            
            // 更新员工工作量
            $table_employees = $wpdb->prefix . 'spa_employees';
            $wpdb->query(
                $wpdb->prepare(
                    "UPDATE $table_employees 
                     SET current_workload = current_workload + 1 
                     WHERE id = %d",
                    $employee_id
                )
            );
            
            $wpdb->query('COMMIT');
            
            return array('success' => true, 'assignment_id' => $assignment_id);
            
        } catch (Exception $e) {
            $wpdb->query('ROLLBACK');
            return array('success' => false, 'error' => $e->getMessage());
        }
    }
}

创建用户友好的管理界面来管理任务和查看派工情况：

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// 在Smart_Production_Assignment类中添加
public function add_admin_menu() {
    // 主菜单
    add_menu_page(
        '智能生产派工',
        '生产派工',
        'manage_options',
        'smart-production',
        array($this, 'render_main_page'),
        'dashicons-clipboard',
        30
    );
    
    // 子菜单
    add_submenu_page(
        'smart-production',
        '生产任务',
        '任务管理',
        'manage_options',
        'spa-tasks',
        array($this, 'render_tasks_page')
    );
    
    add_submenu_page(
        'smart-production',
        '员工管理',
        '员工管理',
        'manage_options',
        'spa-employees',
        array($this, 'render_employees_page')
    );
    
    add_submenu_page(
        'smart-production',
        '派工记录',
        '派工记录',
        'manage_options',
        'spa-assignments',
        array($this, 'render_assignments_page')
    );
    
    add_submenu_page(
        'smart-production',
        '批量派工',
        '批量派工',
        'manage_options',
        'spa-batch-assign',
        array($this, 'render_batch_assign_page')
    );
}

/**
 * 渲染批量派工页面
 */
public function render_batch_assign_page() {
    ?>
    <div class="wrap">
        <h1>批量智能派工</h1>
        
        <div class="card">
            <h2>待分配任务列表</h2>
            <?php
            global $wpdb;
            $table_tasks = $wpdb->prefix . 'spa_tasks';
            
            $pending_tasks = $wpdb->get_results(
                "SELECT * FROM $table_tasks WHERE status = 0 ORDER BY priority ASC, deadline ASC",
                ARRAY_A
            );
            
            if (empty($pending_tasks)) {
                echo '<p>没有待分配的任务。</p>';
            } else {
                echo '<table class="wp-list-table widefat fixed striped">';
                echo '<thead>
                        <tr>
                            <th>任务名称</th>
                            <th>优先级</th>
                            <th>所需技能</th>
                            <th>预计耗时</th>
                            <th>截止日期</th>
                            <th>操作</th>
                        </tr>
                      </thead>';
                echo '<tbody>';
                
                foreach ($pending_tasks as $task) {
                    $priority_text = $this->get_priority_text($task['priority']);
                    $priority_class = $this->get_priority_class($task['priority']);
                    
                    echo '<tr>';
                    echo '<td>' . esc_html($task['task_name']) . '</td>';
                    echo '<td><span class="' . $priority_class . '">' . $priority_text . '</span></td>';

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                    echo '<td>等级 ' . esc_html($task['required_skill']) . '</td>';
                    echo '<td>' . esc_html($task['estimated_time']) . ' 分钟</td>';
                    echo '<td>' . esc_html($task['deadline']) . '</td>';
                    echo '<td>
                            <button class="button button-small assign-single" data-task-id="' . esc_attr($task['id']) . '">
                                智能分配
                            </button>
                          </td>';
                    echo '</tr>';
                }
                
                echo '</tbody></table>';
                
                // 批量分配按钮
                echo '<div style="margin-top: 20px;">
                        <button id="batch-assign-all" class="button button-primary">
                            智能分配所有待分配任务
                        </button>
                        <span id="batch-progress" style="margin-left: 15px; display: none;"></span>
                      </div>';
            }
            ?>
        </div>
        
        <div class="card" style="margin-top: 20px;">
            <h2>实时分配结果</h2>
            <div id="assignment-results">
                <!-- 分配结果将通过AJAX动态显示 -->
            </div>
        </div>
    </div>
    
    <script>
    jQuery(document).ready(function($) {
        // 单个任务分配
        $('.assign-single').on('click', function() {
            var taskId = $(this).data('task-id');
            var button = $(this);
            
            button.prop('disabled', true).text('分配中...');
            
            $.ajax({
                url: ajaxurl,
                type: 'POST',
                data: {
                    action: 'spa_assign_task',
                    task_id: taskId,
                    nonce: '<?php echo wp_create_nonce("spa_assign_nonce"); ?>'
                },
                success: function(response) {
                    if (response.success) {
                        $('#assignment-results').prepend(
                            '<div class="notice notice-success"><p>' +
                            '任务已分配给 ' + response.employee_name + 
                            ' (匹配度: ' + response.match_score + '%)</p></div>'
                        );
                        button.closest('tr').fadeOut();
                    } else {
                        $('#assignment-results').prepend(
                            '<div class="notice notice-error"><p>' + response.message + '</p></div>'
                        );
                        button.prop('disabled', false).text('智能分配');
                    }
                }
            });
        });
        
        // 批量分配所有任务
        $('#batch-assign-all').on('click', function() {
            var button = $(this);
            var progress = $('#batch-progress');
            
            button.prop('disabled', true);
            progress.show().text('开始分配...');
            
            // 获取所有待分配任务ID
            var taskIds = [];
            $('.assign-single').each(function() {
                taskIds.push($(this).data('task-id'));
            });
            
            if (taskIds.length === 0) {
                progress.text('没有待分配的任务');
                return;
            }
            
            // 逐个分配任务
            var completed = 0;
            var total = taskIds.length;
            
            function assignNextTask() {
                if (completed >= total) {
                    progress.text('所有任务分配完成！');
                    button.prop('disabled', false);
                    return;
                }
                
                var taskId = taskIds[completed];
                progress.text('正在分配任务 ' + (completed + 1) + '/' + total);
                
                $.ajax({
                    url: ajaxurl,
                    type: 'POST',
                    data: {
                        action: 'spa_assign_task',
                        task_id: taskId,
                        nonce: '<?php echo wp_create_nonce("spa_assign_nonce"); ?>'
                    },
                    success: function(response) {
                        completed++;
                        
                        if (response.success) {
                            $('#assignment-results').prepend(
                                '<div class="notice notice-success"><p>' +
                                '任务#' + taskId + ' 已分配给 ' + response.employee_name + 
                                ' (匹配度: ' + response.match_score + '%)</p></div>'
                            );
                            $('[data-task-id="' + taskId + '"]').closest('tr').fadeOut();
                        } else {
                            $('#assignment-results').prepend(
                                '<div class="notice notice-error"><p>任务#' + taskId + ': ' + response.message + '</p></div>'
                            );
                        }
                        
                        // 继续分配下一个任务
                        setTimeout(assignNextTask, 500);
                    },
                    error: function() {
                        completed++;
                        $('#assignment-results').prepend(
                            '<div class="notice notice-error"><p>任务#' + taskId + ': 分配失败</p></div>'
                        );
                        setTimeout(assignNextTask, 500);
                    }
                });
            }
            
            assignNextTask();
        });
    });
    </script>
    <?php
}

/**
 * 渲染任务管理页面
 */
public function render_tasks_page() {
    // 处理表单提交
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['add_task'])) {
        $this->add_new_task($_POST);
    }
    
    ?>
    <div class="wrap">
        <h1>生产任务管理</h1>
        
        <div class="card">
            <h2>添加新任务</h2>
            <form method="POST" action="">
                <table class="form-table">
                    <tr>
                        <th><label for="task_name">任务名称</label></th>
                        <td><input type="text" id="task_name" name="task_name" required class="regular-text"></td>
                    </tr>
                    <tr>
                        <th><label for="description">任务描述</label></th>
                        <td><textarea id="description" name="description" rows="3" class="large-text"></textarea></td>
                    </tr>
                    <tr>
                        <th><label for="required_skill">所需技能等级</label></th>
                        <td>
                            <select id="required_skill" name="required_skill">
                                <?php for ($i = 1; $i <= 5; $i++): ?>
                                    <option value="<?php echo $i; ?>"><?php echo $i; ?> 级</option>
                                <?php endfor; ?>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th><label for="estimated_time">预计耗时(分钟)</label></th>
                        <td><input type="number" id="estimated_time" name="estimated_time" min="1" required></td>
                    </tr>
                    <tr>
                        <th><label for="priority">优先级</label></th>
                        <td>
                            <select id="priority" name="priority">
                                <option value="1">高</option>
                                <option value="2" selected>中</option>
                                <option value="3">低</option>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th><label for="product_type">产品类型</label></th>
                        <td><input type="text" id="product_type" name="product_type" class="regular-text"></td>
                    </tr>
                    <tr>
                        <th><label for="batch_size">批次大小</label></th>
                        <td><input type="number" id="batch_size" name="batch_size" min="1" value="1"></td>
                    </tr>
                    <tr>
                        <th><label for="deadline">截止日期</label></th>
                        <td><input type="date" id="deadline" name="deadline" required></td>
                    </tr>
                </table>
                <?php submit_button('添加任务', 'primary', 'add_task'); ?>
            </form>
        </div>
        
        <div class="card" style="margin-top: 20px;">
            <h2>任务列表</h2>
            <?php
            global $wpdb;
            $table_tasks = $wpdb->prefix . 'spa_tasks';
            $table_employees = $wpdb->prefix . 'spa_employees';
            
            $tasks = $wpdb->get_results("
                SELECT t.*, e.name as assigned_employee 
                FROM $table_tasks t 
                LEFT JOIN $table_employees e ON t.assigned_to = e.id 
                ORDER BY t.priority ASC, t.deadline ASC
            ", ARRAY_A);
            
            if ($tasks) {
                echo '<table class="wp-list-table widefat fixed striped">';
                echo '<thead>
                        <tr>
                            <th>ID</th>
                            <th>任务名称</th>
                            <th>优先级</th>
                            <th>状态</th>
                            <th>分配员工</th>
                            <th>截止日期</th>
                            <th>操作</th>
                        </tr>
                      </thead>';
                echo '<tbody>';
                
                foreach ($tasks as $task) {
                    $status_text = $this->get_status_text($task['status']);
                    $status_class = $this->get_status_class($task['status']);
                    $priority_text = $this->get_priority_text($task['priority']);
                    
                    echo '<tr>';
                    echo '<td>' . esc_html($task['id']) . '</td>';
                    echo '<td>' . esc_html($task['task_name']) . '</td>';
                    echo '<td>' . esc_html($priority_text) . '</td>';
                    echo '<td><span class="' . esc_attr($status_class) . '">' . esc_html($status_text) . '</span></td>';
                    echo '<td>' . esc_html($task['assigned_employee'] ?: '未分配') . '</td>';
                    echo '<td>' . esc_html($task['deadline']) . '</td>';
                    echo '<td>
                            <a href="?page=spa-tasks&action=edit&id=' . esc_attr($task['id']) . '" class="button button-small">编辑</a>
                            <a href="?page=spa-tasks&action=delete&id=' . esc_attr($task['id']) . '" 
                               class="button button-small button-danger" 
                               onclick="return confirm('确定删除此任务？')">删除</a>
                          </td>';
                    echo '</tr>';
                }
                
                echo '</tbody></table>';
            } else {
                echo '<p>暂无任务。</p>';
            }
            ?>
        </div>
    </div>
    <?php
}

/**
 * 添加新任务
 */
private function add_new_task($data) {
    global $wpdb;
    $table_tasks = $wpdb->prefix . 'spa_tasks';
    
    $result = $wpdb->insert(
        $table_tasks,
        array(
            'task_name' => sanitize_text_field($data['task_name']),
            'description' => sanitize_textarea_field($data['description']),
            'required_skill' => intval($data['required_skill']),
            'estimated_time' => intval($data['estimated_time']),
            'priority' => intval($data['priority']),
            'product_type' => sanitize_text_field($data['product_type']),
            'batch_size' => intval($data['batch_size']),
            'deadline' => sanitize_text_field($data['deadline']),
            'status' => 0
        ),
        array('%s', '%s', '%d', '%d', '%d', '%s', '%d', '%s', '%d')
    );
    
    if ($result) {
        echo '<div class="notice notice-success"><p>任务添加成功！</p></div>';
    } else {
        echo '<div class="notice notice-error"><p>任务添加失败。</p></div>';
    }
}

复制

// 在init_hooks方法中添加AJAX处理
add_action('wp_ajax_spa_assign_task', array($this, 'ajax_assign_task'));
add_action('wp_ajax_spa_get_task_stats', array($this, 'ajax_get_task_stats'));
add_action('wp_ajax_spa_update_task_status', array($this, 'ajax_update_task_status'));

/**
 * AJAX处理任务分配
 */
public function ajax_assign_task() {
    // 验证nonce
    if (!wp_verify_nonce($_POST['nonce'], 'spa_assign_nonce')) {
        wp_die('安全验证失败');
    }
    
    $task_id = intval($_POST['task_id']);
    
    // 调用智能派工算法
    $algorithm = new TaskAssignmentAlgorithm();
    $result = $algorithm->intelligent_assignment($task_id);
    
    wp_send_json($result);
}

/**
 * 获取任务统计信息
 */
public function ajax_get_task_stats() {
    global $wpdb;
    
    $table_tasks = $wpdb->prefix . 'spa_tasks';
    
    $stats = array(
        'total' => 0,
        'pending' => 0,
        'assigned' => 0,
        'in_progress' => 0,
        'completed' => 0
    );
    
    // 获取总数
    $stats['total'] = $wpdb->get_var("SELECT COUNT(*) FROM $table_tasks");
    
    // 按状态统计
    $status_counts = $wpdb->get_results("
        SELECT status, COUNT(*) as count 
        FROM $table_tasks 
        GROUP BY status
    ", ARRAY_A);
    
    foreach ($status_counts as $row) {
        switch ($row['status']) {
            case 0: $stats['pending'] = $row['count']; break;
            case 1: $stats['assigned'] = $row['count']; break;
            case 2: $stats['in_progress'] = $row['count']; break;
            case 3: $stats['completed'] = $row['count']; break;
        }
    }
    
    wp_send_json($stats);
}

/**
 * 更新任务状态
 */
public function ajax_update_task_status() {
    global $wpdb;
    
    $task_id = intval($_POST['task_id']);
    $status = intval($_POST['status']);
    
    $table_tasks = $wpdb->prefix . 'spa_tasks';
    
    $data = array('status' => $status);
    
    if ($status == 3) { // 完成状态
        $data['completed_at'] = current_time('mysql');
        
        // 减少员工工作量
        $task = $wpdb->get_row(
            $wpdb->prepare("SELECT assigned_to FROM $table_tasks WHERE id = %d", $task_id),
            ARRAY_A
        );
        
        if ($task && $task['assigned_to']) {
            $table_employees = $wpdb->prefix . 'spa_employees';
            $wpdb->query(
                $wpdb->prepare(
                    "UPDATE $table_employees 
                     SET current_workload = GREATEST(0, current_workload - 1) 
                     WHERE id = %d",
                    $task['assigned_to']
                )
            );
        }
    }
    
    $result = $wpdb->update(
        $table_tasks,
        $data,
        array('id' => $task_id),
        $status == 3 ? array('%d', '%s') : array('%d'),
        array('%d')
    );
    
    wp_send_json(array('success' => $result !== false));
}

复制

// 添加仪表板小工具
add_action('wp_dashboard_setup', array($this, 'add_dashboard_widgets'));

public function add_dashboard_widgets() {
    wp_add_dashboard_widget(
        'spa_task_overview',
        '生产任务概览',
        array($this, 'render_dashboard_widget')
    );
}

public function render_dashboard_widget() {
    global $wpdb;
    
    $table_tasks = $wpdb->prefix . 'spa_tasks';
    $table_employees = $wpdb->prefix . 'spa_employees';
    
    // 获取紧急任务
    $urgent_tasks = $wpdb->get_results("
        SELECT * FROM $table_tasks 
        WHERE status IN (0, 1, 2) 
        AND deadline <= DATE_ADD(CURDATE(), INTERVAL 3 DAY)
        ORDER BY deadline ASC 
        LIMIT 5
    ", ARRAY_A);
    
    // 获取员工负荷情况
    $employee_load = $wpdb->get_results("
        SELECT name, current_workload, max_daily_tasks,
               ROUND((current_workload / max_daily_tasks) * 100) as load_percentage
        FROM $table_employees 
        WHERE is_active = 1
        ORDER BY load_percentage DESC
    ", ARRAY_A);
    
    echo '<h3>即将到期的任务</h3>';
    if ($urgent_tasks) {
        echo '<ul>';
        foreach ($urgent_tasks as $task) {
            $days_left = ceil((strtotime($task['deadline']) - time()) / (60 * 60 * 24));
            $status_class = $this->get_status_class($task['status']);
            $status_text = $this->get_status_text($task['status']);
            
            echo '<li>';
            echo '<strong>' . esc_html($task['task_name']) . '</strong><br>';
            echo '截止: ' . esc_html($task['deadline']) . ' (' . $days_left . '天)';
            echo ' | 状态: <span class="' . $status_class . '">' . $status_text . '</span>';
            echo '</li>';
        }
        echo '</ul>';
    } else {
        echo '<p>没有即将到期的任务。</p>';
    }
    
    echo '<h3>员工工作负荷</h3>';
    echo '<table style="width: 100%;">';
    foreach ($employee_load as $employee) {
        $percentage = $employee['load_percentage'];
        $bar_color = $percentage < 60 ? 'green' : ($percentage < 85 ? 'orange' : 'red');
        
        echo '<tr>';
        echo '<td>' . esc_html($employee['name']) . '</td>';
        echo '<td style="width: 60%; padding: 0 10px;">';