fix: rebuild MES as compilable go-zero+ent backend (renamed bj_power_mes), restore 3 workstation projects from pristine original, align naming; all Go projects go build clean

bj_power_mes/internal/camera/manager.go

@@ -0,0 +1,105 @@
+package camera
+
+import (
+	"fmt"
+	"log"
+	"sync"
+	"time"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type CameraEventHandler func(*Manager, string) []byte
+
+type Config struct {
+	Addr          string
+	Timeout       time.Duration
+	MaxRetries    int
+	RetryInterval time.Duration
+}
+
+type Manager struct {
+	client    *Client
+	config    Config
+	mu        sync.Mutex
+	listeners map[string]CameraEventHandler
+}
+
+func NewManager(config Config) *Manager {
+	return &Manager{
+		config:    config,
+		listeners: make(map[string]CameraEventHandler),
+	}
+}
+
+func (m *Manager) Start() error {
+	m.client = NewClient(m.config.Addr, m.config.Timeout)
+	err := m.client.ConnectWithRetry(m.config.MaxRetries, m.config.RetryInterval)
+	if err != nil {
+		return err
+	}
+
+	// 启动监听
+	go m.listenLoop()
+
+	return nil
+}
+
+func (m *Manager) listenLoop() {
+	ticker := time.NewTicker(1 * time.Second)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			m.pollEvents()
+		}
+	}
+}
+
+func (m *Manager) pollEvents() {
+	// 模拟检测事件，实际应由 Client 提供事件检测接口
+	result, err := m.client.GetDetectionResult()
+	if err != nil {
+		log.Printf("获取检测结果失败: %v", err)
+		return
+	}
+
+	if result != "" {
+		m.handleEvent("detection_result", result)
+	}
+}
+
+func (m *Manager) handleEvent(event string, data string) {
+	m.mu.Lock()
+	handler, exists := m.listeners[event]
+	m.mu.Unlock()
+
+	if !exists {
+		log.Printf("未注册事件处理器: %s", event)
+		return
+	}
+
+	logx.Infof("触发相机事件: %s, 数据: %s", event, data)
+	resp := handler(m, data)
+	if resp != nil {
+		// 可选：写回响应
+		fmt.Println("响应:", string(resp))
+	}
+}
+
+func (m *Manager) AddListener(event string, handler CameraEventHandler) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	m.listeners[event] = handler
+}
+
+func (m *Manager) GetClient() *Client {
+	return m.client
+}
+
+func (m *Manager) Close() {
+	if m.client != nil {
+		m.client.Close()
+	}
+}