ci(arch): forbid pkg packages from depending on project core packages

backend/plugins/domain/message_gateway/push/slack.go

@@ -0,0 +1,80 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package push
+
+import (
+	"Wavelet/pkg/httppool"
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+func init() {
+	Register("slack", &SlackPusher{})
+}
+
+// SlackPusher Slack Webhook 推送实现
+type SlackPusher struct{}
+
+type slackPayload struct {
+	Text string `json:"text"`
+}
+
+// Send 发送 Slack 通知
+func (p *SlackPusher) Send(ctx context.Context, cfg Config, _ string, body map[string]any, _ string, _ map[string]any) (string, error) {
+	if cfg.URL == "" {
+		return "", errors.New("slack: webhook URL is required")
+	}
+
+	title := bodyTitle(body)
+	content := bodyContent(body, "*%s*: %v", "\n")
+
+	text := fmt.Sprintf("*%s*\n%s", title, content)
+	payload := slackPayload{
+		Text: text,
+	}
+
+	reqBytes, err := json.Marshal(payload)
+	if err != nil {
+		return "", fmt.Errorf("slack: marshal payload failed: %w", err)
+	}
+
+	httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, cfg.URL, bytes.NewReader(reqBytes))
+	if err != nil {
+		return "", fmt.Errorf("slack: create request failed: %w", err)
+	}
+	httpReq.Header.Set("Content-Type", "application/json")
+
+	client := httppool.NewClient(defaultHTTPClientTimeout)
+	resp, err := client.Do(httpReq)
+	if err != nil {
+		return "", fmt.Errorf("slack: http request failed: %w", err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+
+	respBody, _ := io.ReadAll(io.LimitReader(resp.Body, maxResponseBodyBytes))
+	upstreamResp := strings.TrimSpace(string(respBody))
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return upstreamResp, fmt.Errorf("slack: http status %s", resp.Status)
+	}
+
+	return upstreamResp, nil
+}
+
+// ValidateConfig 校验 Slack 配置
+func (p *SlackPusher) ValidateConfig(cfg Config) error {
+	if cfg.URL == "" {
+		return errors.New("webhook URL is required")
+	}
+	if !strings.HasPrefix(cfg.URL, "https://") {
+		return errors.New("webhook URL must start with https://")
+	}
+	return nil
+}