add plugin

event.go

@@ -14,7 +14,7 @@ type Event struct {
 	// UpdateID is the update's unique identifier.
 	UpdateID int
 	// Value is the non-null field value in Update
-	Value reflect.Value
+	Value any
 }
 
 func (tc *TelegramClient) processEvent(update tgba.Update) {
@@ -26,6 +26,29 @@ func (tc *TelegramClient) processEvent(update tgba.Update) {
 			continue
 		}
 		tp := t.Field(i).Name
+		if tc.b.Handler == nil {
+			matcherLock.RLock()
+			n := len(matcherMap[tp])
+			if n == 0 {
+				matcherLock.RUnlock()
+				continue
+			}
+			log.Println("[INFO] pass", tp, "event to plugins")
+			matchers := make([]*Matcher, n)
+			copy(matchers, matcherMap[tp])
+			matcherLock.RUnlock()
+			ctx := &Ctx{
+				Event: Event{
+					Type:     tp,
+					UpdateID: update.UpdateID,
+					Value:    f.Interface(),
+				},
+				State:  State{},
+				Caller: tc,
+			}
+			match(ctx, matchers)
+			continue
+		}
 		h, ok := tc.b.handlers[tp]
 		if !ok {
 			continue
@@ -34,3 +57,58 @@ func (tc *TelegramClient) processEvent(update tgba.Update) {
 		go h(update.UpdateID, tc, f.UnsafePointer())
 	}
 }
+
+func match(ctx *Ctx, matchers []*Matcher) {
+loop:
+	for _, matcher := range matchers {
+		for k := range ctx.State { // Clear State
+			delete(ctx.State, k)
+		}
+		matcherLock.RLock()
+		m := matcher.copy()
+		matcherLock.RUnlock()
+		ctx.ma = m
+
+		// pre handler
+		if m.Engine != nil {
+			for _, handler := range m.Engine.preHandler {
+				if !handler(ctx) { // 有 pre handler 未满足
+					continue loop
+				}
+			}
+		}
+
+		for _, rule := range m.Rules {
+			if rule != nil && !rule(ctx) { // 有 Rule 的条件未满足
+				continue loop
+			}
+		}
+
+		// mid handler
+		if m.Engine != nil {
+			for _, handler := range m.Engine.midHandler {
+				if !handler(ctx) { // 有 mid handler 未满足
+					continue loop
+				}
+			}
+		}
+
+		if m.Process != nil {
+			m.Process(ctx) // 处理事件
+		}
+		if matcher.Temp { // 临时 Matcher 删除
+			matcher.Delete()
+		}
+
+		if m.Engine != nil {
+			// post handler
+			for _, handler := range m.Engine.postHandler {
+				handler(ctx)
+			}
+		}
+
+		if m.Block { // 阻断后续
+			break loop
+		}
+	}
+}