feat: merge conflict resolution, site management, UI fixes

internal/service/notify_email.go

@@ -0,0 +1,147 @@
+// Package service — Email(SMTP) 通知 Provider。
+package service
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net/mail"
+	"net/smtp"
+	"strconv"
+	"strings"
+)
+
+// EmailProvider 通过 SMTP 发送邮件通知。
+type EmailProvider struct{}
+
+// Send 通过 SMTP 发送邮件。
+func (p *EmailProvider) Send(ctx context.Context, cfg map[string]string, event NotifyEvent) error {
+	smtpHost := cfg["smtp_host"]
+	smtpPortStr := cfg["smtp_port"]
+	username := cfg["username"]
+	password := cfg["password"]
+	from := cfg["from"]
+	to := cfg["to"]
+	tlsStr := cfg["tls"]
+
+	if smtpHost == "" || smtpPortStr == "" || username == "" || from == "" || to == "" {
+		return fmt.Errorf("email: smtp_host, smtp_port, username, from, and to are required")
+	}
+
+	smtpPort, err := strconv.Atoi(smtpPortStr)
+	if err != nil {
+		return fmt.Errorf("email: invalid smtp_port: %s", smtpPortStr)
+	}
+
+	useTLS := true
+	if tlsStr == "false" || tlsStr == "0" || tlsStr == "no" {
+		useTLS = false
+	}
+
+	// 构建邮件内容
+	subject := fmt.Sprintf("[MediaStationGo] %s", event.Title)
+	body := event.Message
+	if len(event.Data) > 0 {
+		body += "\n\n---\n详细信息:\n"
+		for k, v := range event.Data {
+			body += fmt.Sprintf("  %s: %v\n", k, v)
+		}
+	}
+
+	recipients := strings.Split(to, ",")
+	for i, r := range recipients {
+		recipients[i] = strings.TrimSpace(r)
+	}
+
+	// 构建邮件
+	fromAddr := mail.Address{Name: "MediaStationGo", Address: from}
+	toAddrs := make([]mail.Address, 0, len(recipients))
+	for _, r := range recipients {
+		toAddrs = append(toAddrs, mail.Address{Address: r})
+	}
+
+	msg := "From: " + fromAddr.String() + "\r\n"
+	msg += "To: "
+	for i, addr := range toAddrs {
+		if i > 0 {
+			msg += ", "
+		}
+		msg += addr.String()
+	}
+	msg += "\r\n"
+	msg += "Subject: " + subject + "\r\n"
+	msg += "MIME-Version: 1.0\r\n"
+	msg += "Content-Type: text/plain; charset=\"utf-8\"\r\n"
+	msg += "Content-Transfer-Encoding: base64\r\n"
+	msg += "\r\n"
+	msg += body
+
+	addr := fmt.Sprintf("%s:%d", smtpHost, smtpPort)
+	auth := smtp.PlainAuth("", username, password, smtpHost)
+
+	if useTLS {
+		// 使用 TLS 连接
+		tlsConfig := &tls.Config{
+			ServerName: smtpHost,
+			MinVersion: tls.VersionTLS12,
+		}
+		conn, err := tls.Dial("tcp", addr, tlsConfig)
+		if err != nil {
+			return fmt.Errorf("email tls dial: %w", err)
+		}
+		client, err := smtp.NewClient(conn, smtpHost)
+		if err != nil {
+			return fmt.Errorf("email smtp client: %w", err)
+		}
+		defer client.Close()
+
+		if err = client.Auth(auth); err != nil {
+			return fmt.Errorf("email auth: %w", err)
+		}
+		if err = client.Mail(from); err != nil {
+			return fmt.Errorf("email mail from: %w", err)
+		}
+		for _, r := range recipients {
+			if err = client.Rcpt(r); err != nil {
+				return fmt.Errorf("email rcpt to: %w", err)
+			}
+		}
+		w, err := client.Data()
+		if err != nil {
+			return fmt.Errorf("email data: %w", err)
+		}
+		if _, err = w.Write([]byte(msg)); err != nil {
+			return fmt.Errorf("email write: %w", err)
+		}
+		if err = w.Close(); err != nil {
+			return fmt.Errorf("email close: %w", err)
+		}
+		return client.Quit()
+	}
+
+	// 不使用 TLS（STARTTLS 或明文）
+	return smtp.SendMail(addr, auth, from, recipients, []byte(msg))
+}
+
+// ValidateConfig 验证 Email 配置。
+func (p *EmailProvider) ValidateConfig(cfg map[string]string) error {
+	if cfg["smtp_host"] == "" {
+		return fmt.Errorf("email: smtp_host is required")
+	}
+	if cfg["smtp_port"] == "" {
+		return fmt.Errorf("email: smtp_port is required")
+	}
+	if cfg["username"] == "" {
+		return fmt.Errorf("email: username is required")
+	}
+	if cfg["from"] == "" {
+		return fmt.Errorf("email: from is required")
+	}
+	if cfg["to"] == "" {
+		return fmt.Errorf("email: to is required")
+	}
+	if _, err := strconv.Atoi(cfg["smtp_port"]); err != nil {
+		return fmt.Errorf("email: invalid smtp_port")
+	}
+	return nil
+}