Initial backend repository commit.

Set up project files and add .gitignore to exclude local build/runtime artifacts.

Made-with: Cursor

internal/service/email_service.go

@@ -0,0 +1,82 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	emailpkg "carrot_bbs/internal/pkg/email"
+)
+
+// SendEmailRequest 发信请求
+type SendEmailRequest struct {
+	To          []string
+	Cc          []string
+	Bcc         []string
+	ReplyTo     []string
+	Subject     string
+	TextBody    string
+	HTMLBody    string
+	Attachments []string
+}
+
+type EmailService interface {
+	IsEnabled() bool
+	Send(ctx context.Context, req SendEmailRequest) error
+	SendText(ctx context.Context, to []string, subject, body string) error
+	SendHTML(ctx context.Context, to []string, subject, html string) error
+}
+
+type emailServiceImpl struct {
+	client emailpkg.Client
+}
+
+func NewEmailService(client emailpkg.Client) EmailService {
+	return &emailServiceImpl{client: client}
+}
+
+func (s *emailServiceImpl) IsEnabled() bool {
+	return s.client != nil && s.client.IsEnabled()
+}
+
+func (s *emailServiceImpl) Send(ctx context.Context, req SendEmailRequest) error {
+	if s.client == nil {
+		return fmt.Errorf("email client is nil")
+	}
+	if !s.client.IsEnabled() {
+		return fmt.Errorf("email service is disabled")
+	}
+	if len(req.To) == 0 {
+		return fmt.Errorf("email recipient is empty")
+	}
+	if strings.TrimSpace(req.Subject) == "" {
+		return fmt.Errorf("email subject is empty")
+	}
+
+	return s.client.Send(ctx, emailpkg.Message{
+		To:          req.To,
+		Cc:          req.Cc,
+		Bcc:         req.Bcc,
+		ReplyTo:     req.ReplyTo,
+		Subject:     req.Subject,
+		TextBody:    req.TextBody,
+		HTMLBody:    req.HTMLBody,
+		Attachments: req.Attachments,
+	})
+}
+
+func (s *emailServiceImpl) SendText(ctx context.Context, to []string, subject, body string) error {
+	return s.Send(ctx, SendEmailRequest{
+		To:       to,
+		Subject:  subject,
+		TextBody: body,
+	})
+}
+
+func (s *emailServiceImpl) SendHTML(ctx context.Context, to []string, subject, html string) error {
+	return s.Send(ctx, SendEmailRequest{
+		To:       to,
+		Subject:  subject,
+		HTMLBody: html,
+	})
+}