mirror of
https://github.com/Rain-kl/OpenFlare.git
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wavelet init
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ryan
@@ -0,0 +1,275 @@
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// Copyright 2026 Arctel.net
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// SPDX-License-Identifier: Apache-2.0
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package push
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import (
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"bytes"
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"context"
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"strconv"
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"strings"
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"time"
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"github.com/Rain-kl/Wavelet/pkg/httppool"
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)
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func init() {
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Register("lark", &LarkPusher{})
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}
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const (
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msgTypeInteractive = "interactive"
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)
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// LarkPusher 飞书 Webhook 机器人推送实现
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type LarkPusher struct{}
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type larkTextContent struct {
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Text string `json:"text"`
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}
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type larkCardHeaderTitle struct {
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Content string `json:"content"`
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Tag string `json:"tag"`
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}
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type larkCardHeader struct {
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Template string `json:"template"` // "blue", "orange", "red" etc.
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Title larkCardHeaderTitle `json:"title"`
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}
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type larkCardElementText struct {
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Content string `json:"content"`
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Tag string `json:"tag"` // "lark_md"
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}
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type larkCardElement struct {
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Tag string `json:"tag"` // "div"
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Text larkCardElementText `json:"text"`
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}
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type larkCardContent struct {
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Header larkCardHeader `json:"header"`
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Elements []larkCardElement `json:"elements"`
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}
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type larkMessageRequest struct {
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MessageType string `json:"msg_type"`
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Timestamp string `json:"timestamp,omitempty"`
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Sign string `json:"sign,omitempty"`
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Content larkTextContent `json:"content,omitempty"`
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Card *larkCardContent `json:"card,omitempty"`
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}
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type larkMessageResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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}
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// Send 执行飞书消息发送
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//
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//nolint:nestif,cyclop
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func (p *LarkPusher) Send(ctx context.Context, cfg Config, _ string, body map[string]any, template string, _ map[string]any) error {
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if cfg.URL == "" {
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return errors.New("lark: URL is required")
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}
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var req larkMessageRequest
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// 1. 如果有自定义模板，我们尝试进行解析
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if template != "" {
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rendered := ParseTemplate(template, body)
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// 尝试解析原生的 Lark Card
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var customCard larkCardContent
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var rawMap map[string]any
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_ = json.Unmarshal([]byte(rendered), &rawMap)
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if rawMap != nil && rawMap["elements"] != nil {
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// 如果包含 elements 字段，说明是用户定制的原生飞书卡片 JSON
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if err := json.Unmarshal([]byte(rendered), &customCard); err == nil {
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req.MessageType = msgTypeInteractive
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req.Card = &customCard
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} else {
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req.MessageType = "text"
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req.Content.Text = rendered
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}
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} else {
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// 说明配置的是系统统一通知消息 of JSON 模板：{"title": "...", "content": "...", "level": "..."}
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type larkNotificationMessage struct {
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Title string `json:"title"`
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Content string `json:"content"`
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Level string `json:"level"`
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}
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var msg larkNotificationMessage
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if err := json.Unmarshal([]byte(rendered), &msg); err == nil && (msg.Title != "" || msg.Content != "") {
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title := msg.Title
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if title == "" {
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title = defaultTitle
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}
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content := msg.Content
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level := strings.ToUpper(msg.Level)
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if level == "" {
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level = levelInfo
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}
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headerColor := "blue"
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switch level {
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case "IMPORTANT":
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headerColor = "orange"
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case "CRITICAL":
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headerColor = "red"
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}
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req.MessageType = msgTypeInteractive
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req.Card = &larkCardContent{
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Header: larkCardHeader{
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Template: headerColor,
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Title: larkCardHeaderTitle{
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Content: title,
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Tag: "plain_text",
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},
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},
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Elements: []larkCardElement{
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{
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Tag: "div",
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Text: larkCardElementText{
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Content: content,
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Tag: "lark_md",
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},
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},
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},
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}
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} else {
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// 兜底：如果无法按 JSON 解析出结构化字段，当做普通文本发送
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req.MessageType = "text"
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req.Content.Text = rendered
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}
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}
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} else {
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// 2. 如果无模板，默认生成一个精美的飞书互动卡片
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title := defaultTitle
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if t, ok := body["title"].(string); ok && t != "" {
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title = t
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}
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content := ""
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if c, ok := body["content"].(string); ok && c != "" {
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content = c
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} else {
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// 兜底：如果连 content 都没有，把 body 里的所有值拼成 markdown
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var parts []string
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for k, v := range body {
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parts = append(parts, fmt.Sprintf("**%s**: %v", k, v))
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}
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content = strings.Join(parts, "\n")
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}
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level := levelInfo
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if l, ok := body["level"].(string); ok && l != "" {
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level = strings.ToUpper(l)
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}
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// 根据级别确定飞书卡片头部的背景色模板
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headerColor := "blue"
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switch level {
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case "IMPORTANT":
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headerColor = "orange"
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case "CRITICAL":
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headerColor = "red"
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}
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req.MessageType = msgTypeInteractive
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req.Card = &larkCardContent{
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Header: larkCardHeader{
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Template: headerColor,
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Title: larkCardHeaderTitle{
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Content: title,
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Tag: "plain_text",
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},
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},
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Elements: []larkCardElement{
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{
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Tag: "div",
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Text: larkCardElementText{
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Content: content,
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Tag: "lark_md",
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},
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},
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},
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}
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}
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// 3. 计算签名 (如果配置了 secret)
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if cfg.Secret != "" {
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timestamp := time.Now().Unix()
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sign, err := larkSign(cfg.Secret, timestamp)
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if err != nil {
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return fmt.Errorf("lark: sign failed: %w", err)
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}
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req.Timestamp = strconv.FormatInt(timestamp, 10)
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req.Sign = sign
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}
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jsonData, err := json.Marshal(req)
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if err != nil {
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return fmt.Errorf("lark: marshal request failed: %w", err)
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}
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// 4. 发送 POST 请求
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httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, cfg.URL, bytes.NewBuffer(jsonData))
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if err != nil {
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return fmt.Errorf("lark: create http request failed: %w", err)
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}
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httpReq.Header.Set("Content-Type", "application/json")
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client := httppool.NewClient(defaultHTTPClientTimeout)
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resp, err := client.Do(httpReq)
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if err != nil {
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return fmt.Errorf("lark: http request failed: %w", err)
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("lark: http status %s", resp.Status)
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}
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var res larkMessageResponse
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if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
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return fmt.Errorf("lark: decode response failed: %w", err)
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}
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if res.Code != 0 {
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return fmt.Errorf("lark: send message failed, code %d: %s", res.Code, res.Msg)
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}
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return nil
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}
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// ValidateConfig 校验飞书配置
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func (p *LarkPusher) ValidateConfig(cfg Config) error {
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if cfg.URL == "" {
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return errors.New("webhook URL is required")
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}
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if !strings.HasPrefix(cfg.URL, "http://") && !strings.HasPrefix(cfg.URL, "https://") {
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return errors.New("webhook URL must start with http:// or https://")
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}
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return nil
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}
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func larkSign(secret string, timestamp int64) (string, error) {
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stringToSign := fmt.Sprintf("%v", timestamp) + "\n" + secret
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h := hmac.New(sha256.New, []byte(stringToSign))
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_, err := h.Write(nil)
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if err != nil {
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return "", err
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}
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return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
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}
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