wavelet init

Wavelet/pkg/push/email.go

@@ -0,0 +1,109 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package push
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/smtp"
+	"strings"
+)
+
+func init() {
+	Register("email", &EmailPusher{})
+}
+
+// EmailPusher 极简 SMTP 邮件推送实现 (静态、解耦)
+type EmailPusher struct{}
+
+// Send 发送邮件
+func (p *EmailPusher) Send(ctx context.Context, cfg Config, target string, body map[string]any, _ string, ext map[string]any) error {
+	if cfg.URL == "" || cfg.Key == "" || cfg.Secret == "" {
+		return errors.New("email: SMTP configuration (url, key, secret) is incomplete")
+	}
+	if target == "" {
+		return errors.New("email: target email address is required")
+	}
+
+	title := defaultTitle
+	if t, ok := body["title"].(string); ok && t != "" {
+		title = t
+	}
+
+	content := ""
+	if c, ok := body["content"].(string); ok && c != "" {
+		content = c
+	} else {
+		// 自动格式化 map
+		var parts []string
+		for k, v := range body {
+			parts = append(parts, fmt.Sprintf("<p><b>%s</b>: %v</p>", k, v))
+		}
+		content = strings.Join(parts, "")
+	}
+
+	// 邮件头和体
+	from := cfg.Key
+	to := target
+
+	// 如果 ext 中指定了 from_name，我们在 From 头部包含它
+	fromName := "System Notification"
+	if ext != nil {
+		if fn, ok := ext["from_name"].(string); ok && fn != "" {
+			fromName = fn
+		}
+	}
+
+	subjectHeader := fmt.Sprintf("Subject: %s\r\n", title)
+	fromHeader := fmt.Sprintf("From: %s <%s>\r\n", fromName, from)
+	toHeader := fmt.Sprintf("To: %s\r\n", to)
+	mimeHeader := "MIME-version: 1.0;\r\nContent-Type: text/html; charset=\"UTF-8\";\r\n\r\n"
+
+	// 拼装完整的邮件报文
+	// 简单的 HTML 正文渲染
+	htmlBody := fmt.Sprintf(`<html><body><h2>%s</h2><div>%s</div></body></html>`, title, content)
+	msg := []byte(fromHeader + toHeader + subjectHeader + mimeHeader + htmlBody + "\r\n")
+
+	// 解析 Host 和 Port
+	host, port, err := net.SplitHostPort(cfg.URL)
+	if err != nil {
+		host = cfg.URL
+		port = "25" // 默认 SMTP 端口
+	}
+
+	auth := smtp.PlainAuth("", cfg.Key, cfg.Secret, host)
+
+	// 异步超时处理
+	errChan := make(chan error, 1)
+	go func() {
+		errChan <- smtp.SendMail(host+":"+port, auth, from, []string{to}, msg)
+	}()
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	case err := <-errChan:
+		if err != nil {
+			return fmt.Errorf("email: send smtp mail failed: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// ValidateConfig 校验邮件 SMTP 配置
+func (p *EmailPusher) ValidateConfig(cfg Config) error {
+	if cfg.URL == "" {
+		return errors.New("SMTP host:port is required")
+	}
+	if cfg.Key == "" {
+		return errors.New("SMTP username is required")
+	}
+	if cfg.Secret == "" {
+		return errors.New("SMTP password is required")
+	}
+	return nil
+}