finish

event.go

@@ -3,10 +3,23 @@ package nano
 import (
 	"encoding/json"
 	"reflect"
+	"strings"
 
 	log "github.com/sirupsen/logrus"
 )
 
+// Event ...
+type Event struct {
+	// Type is payload.T
+	Type string
+	// Seq 序列号
+	Seq uint32
+	// Value 是 D
+	Value any
+	// value is the reflect value of Value
+	value reflect.Value
+}
+
 // processEvent 处理需要关注的业务事件
 func (bot *Bot) processEvent(payload *WebsocketPayload) {
 	tp := UnderlineToCamel(payload.T)
@@ -25,4 +38,129 @@ func (bot *Bot) processEvent(payload *WebsocketPayload) {
 		go ev.h(payload.S, bot, x.UnsafePointer())
 		return
 	}
+	ctx := &Ctx{
+		Event: Event{
+			Type: tp,
+			Seq:  payload.S,
+		},
+		State:  State{},
+		Caller: bot,
+	}
+	switch tp {
+	case "DirectMessageCreate":
+		ctx.IsToMe = true
+		fallthrough
+	case "MessageCreate", "AtMessageCreate":
+		tp = "Message"
+	}
+	matcherLock.RLock()
+	n := len(matcherMap[tp])
+	if n == 0 {
+		matcherLock.RUnlock()
+		return
+	}
+	log.Debugln(getLogHeader(), "pass", tp, "event to plugins")
+	matchers := make([]*Matcher, n)
+	copy(matchers, matcherMap[tp])
+	matcherLock.RUnlock()
+	x := reflect.New(types[ctx.Type])
+	err := json.Unmarshal(payload.D, x.Interface())
+	if err != nil {
+		log.Warnln(getLogHeader(), "解析", ctx.Type, "事件时出现错误:", err)
+		return
+	}
+	ctx.Value = x.Interface()
+	ctx.value = x
+	switch tp {
+	case "Message":
+		ctx.Message = (*Message)(x.UnsafePointer())
+		log.Infoln(getLogHeader(), "收到 Guild:", ctx.Message.GuildID, ", Channel:", ctx.Message.ChannelID, "消息", ctx.Message.Author.ID, ":", ctx.Message.Content)
+	}
+	go match(ctx, matchers)
+}
+
+func match(ctx *Ctx, matchers []*Matcher) {
+	if ctx.Message != nil && ctx.Message.Content != "" { // 确保无空
+		if !ctx.IsToMe {
+			ctx.IsToMe = func(ctx *Ctx) bool {
+				name := ctx.Caller.ready.User.Username
+				if strings.HasPrefix(ctx.Message.Content, name) {
+					log.Debugln(getLogHeader(), "message before process:", ctx.Message.Content)
+					ctx.Message.Content = strings.TrimLeft(ctx.Message.Content[len(name):], " ")
+					log.Debugln(getLogHeader(), "message after process:", ctx.Message.Content)
+					return true
+				}
+				atme := ctx.Caller.AtMe()
+				if strings.HasPrefix(ctx.Message.Content, atme) {
+					log.Debugln(getLogHeader(), "message before process:", ctx.Message.Content)
+					ctx.Message.Content = strings.TrimLeft(ctx.Message.Content[len(atme):], " ")
+					log.Debugln(getLogHeader(), "message after process:", ctx.Message.Content)
+					return true
+				}
+				return OnlyPrivate(ctx)
+			}(ctx)
+		}
+	}
+	log.Debugln(getLogHeader(), "message is to me:", ctx.IsToMe)
+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
+					if m.Break { // 阻断后续
+						break loop
+					}
+					continue loop
+				}
+			}
+		}
+
+		for _, rule := range m.Rules {
+			if rule != nil && !rule(ctx) { // 有 Rule 的条件未满足
+				if m.Break { // 阻断后续
+					break loop
+				}
+				continue loop
+			}
+		}
+
+		// mid handler
+		if m.Engine != nil {
+			for _, handler := range m.Engine.midHandler {
+				if !handler(ctx) { // 有 mid handler 未满足
+					if m.Break { // 阻断后续
+						break loop
+					}
+					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
+		}
+	}
 }