feat: support channel OneBot now (close #64)

channel/main.go

@@ -29,6 +29,8 @@ func SendMessage(message *model.Message, user *model.User, channel_ *model.Chann
 		return SendDiscordMessage(message, user, channel_)
 	case model.TypeNone:
 		return nil
+	case model.TypeOneBot:
+		return SendOneBotMessage(message, user, channel_)
 	default:
 		return errors.New("不支持的消息通道：" + channel_.Type)
 	}

channel/one-bot.go

@@ -0,0 +1,85 @@
+package channel
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"message-pusher/model"
+	"net/http"
+	"strconv"
+	"strings"
+)
+
+type oneBotMessageRequest struct {
+	MessageType string `json:"message_type"`
+	UserId      int64  `json:"user_id"`
+	GroupId     int64  `json:"group_id"`
+	Message     string `json:"message"`
+	AutoEscape  bool   `json:"auto_escape"`
+}
+
+type oneBotMessageResponse struct {
+	Message string `json:"message"`
+	Status  string `json:"status"`
+	RetCode int    `json:"retcode"`
+}
+
+func SendOneBotMessage(message *model.Message, user *model.User, channel_ *model.Channel) error {
+	url := fmt.Sprintf("%s/send_msg", channel_.URL)
+	req := oneBotMessageRequest{
+		Message: message.Content,
+	}
+	if message.Content == "" {
+		req.Message = message.Description
+	}
+	target := channel_.AccountId
+	if message.To != "" {
+		target = message.To
+	}
+	parts := strings.Split(target, "_")
+	var idStr string
+	var type_ string
+	if len(parts) == 1 {
+		type_ = "user"
+		idStr = parts[0]
+	} else if len(parts) == 2 {
+		type_ = parts[0]
+		idStr = parts[1]
+	} else {
+		return errors.New("无效的 OneBot 配置")
+	}
+	id, _ := strconv.ParseInt(idStr, 10, 64)
+	if type_ == "user" {
+		req.UserId = id
+		req.MessageType = "private"
+	} else if type_ == "group" {
+		req.GroupId = id
+		req.MessageType = "group"
+	} else {
+		return errors.New("无效的 OneBot 配置")
+	}
+	reqBody, err := json.Marshal(req)
+	if err != nil {
+		return err
+	}
+	request, _ := http.NewRequest("POST", url, bytes.NewReader(reqBody))
+	request.Header.Set("Authorization", "Bearer "+channel_.Secret)
+	request.Header.Set("Content-Type", "application/json")
+	resp, err := http.DefaultClient.Do(request)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode != 200 {
+		return errors.New(resp.Status)
+	}
+	var res oneBotMessageResponse
+	err = json.NewDecoder(resp.Body).Decode(&res)
+	if err != nil {
+		return err
+	}
+	if res.RetCode != 0 {
+		return errors.New(res.Message)
+	}
+	return nil
+}