enhance something of message's chain (#18)

* enhance priority's setting

* add chain-message's sender

* add a key&val appender in MessageSegment

* enhance MessageSegment Text builder

contex.go

@@ -6,6 +6,7 @@ import (
 	"unsafe"
 
 	"github.com/modern-go/reflect2"
+	"github.com/wdvxdr1123/ZeroBot/message"
 )
 
 // Ctx represents the Context which hold the event.
@@ -90,6 +91,14 @@ func (ctx *Ctx) Send(message interface{}) int64 {
 	return ctx.SendPrivateMessage(ctx.Event.UserID, message)
 }
 
+// SendChain 快捷发送消息-消息链
+func (ctx *Ctx) SendChain(message ...message.MessageSegment) int64 {
+	if ctx.Event.GroupID != 0 {
+		return ctx.SendGroupMessage(ctx.Event.GroupID, message)
+	}
+	return ctx.SendPrivateMessage(ctx.Event.UserID, message)
+}
+
 // FutureEvent ...
 func (ctx *Ctx) FutureEvent(Type string, rule ...Rule) *FutureEvent {
 	return ctx.ma.FutureEvent(Type, rule...)

matcher.go

@@ -63,6 +63,21 @@ func (m *Matcher) SetPriority(priority int) *Matcher {
 	return m
 }
 
+// FirstPriority 设置当前 Matcher 优先级 - 0
+func (m *Matcher) FirstPriority() *Matcher {
+	return m.SetPriority(0)
+}
+
+// SecondPriority 设置当前 Matcher 优先级 - 1
+func (m *Matcher) SecondPriority() *Matcher {
+	return m.SetPriority(1)
+}
+
+// ThirdPriority 设置当前 Matcher 优先级 - 2
+func (m *Matcher) ThirdPriority() *Matcher {
+	return m.SetPriority(2)
+}
+
 // StoreMatcher store a matcher to matcher list.
 func StoreMatcher(m *Matcher) *Matcher {
 	matcherLock.Lock()

message/message.go

@@ -1,6 +1,7 @@
 package message
 
 import (
+	"fmt"
 	"strconv"
 	"strings"
 
@@ -75,11 +76,11 @@ func (m MessageSegment) CQCode() string {
 
 // Text 纯文本
 // https://github.com/howmanybots/onebot/blob/master/v11/specs/message/segment.md#%E7%BA%AF%E6%96%87%E6%9C%AC
-func Text(text string) MessageSegment {
+func Text(text ...interface{}) MessageSegment {
 	return MessageSegment{
 		Type: "text",
 		Data: map[string]string{
-			"text": text,
+			"text": fmt.Sprint(text...),
 		},
 	}
 }
@@ -142,15 +143,14 @@ func Music(mType string, id int64) MessageSegment {
 
 // CustomMusic 音乐自定义分享
 // https://github.com/howmanybots/onebot/blob/master/v11/specs/message/segment.md#%E9%9F%B3%E4%B9%90%E8%87%AA%E5%AE%9A%E4%B9%89%E5%88%86%E4%BA%AB-
-func CustomMusic(subType, url, audio, title string) MessageSegment {
+func CustomMusic(url, audio, title string) MessageSegment {
 	return MessageSegment{
 		Type: "music",
 		Data: map[string]string{
-			"type":     "custom",
-			"sub_type": subType,
-			"url":      url,
-			"audio":    audio,
-			"title":    title,
+			"type":  "custom",
+			"url":   url,
+			"audio": audio,
+			"title": title,
 		},
 	}
 }
@@ -267,6 +267,12 @@ func TTS(text string) MessageSegment {
 	}
 }
 
+// Add 为 MessageSegment 的 Data 增加一个字段
+func (m MessageSegment) Add(key string, val interface{}) MessageSegment {
+	m.Data[key] = fmt.Sprint(val)
+	return m
+}
+
 // ReplyWithMessage returns a reply message
 func ReplyWithMessage(messageID int64, m ...MessageSegment) Message {
 	return append(Message{Reply(messageID)}, m...)