feat: 更新验证码逻辑，优化邮件验证功能，增加验证码冷却时间，改进用户体验Closes #17

pkg/constant/constant.go

@@ -14,7 +14,8 @@ const (
 	RoleEditor                             = "editor" // 能够发布和管理自己内容的用户
 	RoleAdmin                              = "admin"
 	DefaultFileBasePath                    = "./data/uploads"
-	EnvKeyBaseUrl                          = "BASE_URL"           // 环境变量：基础URL
+	EnvKeyBaseUrl                          = "BASE_URL" // 环境变量：基础URL
+	EnvKeyPasscode                         = "\"CAPTCHA_DEV_PASSCODE\""
 	EnvKeyCaptchaProvider                  = "CAPTCHA_PROVIDER"   // captcha提供者
 	EnvKeyCaptchaSecreteKey                = "CAPTCHA_SECRET_KEY" // captcha站点密钥
 	EnvKeyCaptchaUrl                       = "CAPTCHA_URL"        // 某些自托管的captcha的url
@@ -64,7 +65,8 @@ const (
 	OidcUri                                = "/user/oidc/login"         // OIDC登录URI
 	OidcProviderTypeMisskey                = "misskey"                  // OIDC提供者类型：Misskey
 	OidcProviderTypeOauth2                 = "oauth2"                   // OIDC提供者类型：GitHub
-	DefaultBaseUrl                         = "http://localhost:3000"    // 默认BaseUrl
+	DefaultCaptchaDevPasscode              = "dev_passcode"
+	DefaultBaseUrl                         = "http://localhost:3000" // 默认BaseUrl
 	DefaultPasswordSalt                    = "default_salt_114514"
 	TargetTypePost                         = "post"
 	TargetTypeComment                      = "comment"

pkg/utils/email.go

@@ -25,21 +25,17 @@ type EmailConfig struct {
 	SSL      bool   // 是否使用SSL
 }
 
-// SendTemplate 发送HTML模板，从配置文件中读取邮箱配置，支持上下文控制
-func (e *emailUtils) SendTemplate(emailConfig *EmailConfig, target, subject, htmlTemplate string, data map[string]interface{}) error {
+func (e *emailUtils) RenderTemplate(htmlTemplate string, data map[string]interface{}) (string, error) {
 	// 使用Go的模板系统处理HTML模板
 	tmpl, err := template.New("email").Parse(htmlTemplate)
 	if err != nil {
-		return fmt.Errorf("解析模板失败: %w", err)
+		return "", fmt.Errorf("解析模板失败: %w", err)
 	}
-
 	var buf bytes.Buffer
 	if err := tmpl.Execute(&buf, data); err != nil {
-		return fmt.Errorf("执行模板失败: %w", err)
+		return "", fmt.Errorf("执行模板失败: %w", err)
 	}
-
-	// 发送处理后的HTML内容
-	return e.SendEmail(emailConfig, target, subject, buf.String(), true)
+	return buf.String(), nil
 }
 
 // SendEmail 使用gomail库发送邮件

pkg/utils/email_test.go

@@ -1 +1,16 @@
 package utils
+
+import "testing"
+
+func TestEmailUtils_SendEmail(t *testing.T) {
+	templateString := "{{.A}} {{.B}} {{.C}}"
+	data := map[string]interface{}{"A": 1, "B": 2, "C": 3}
+	rendered, err := Email.RenderTemplate(templateString, data)
+	if err != nil {
+		t.Fatalf("RenderTemplate failed: %v", err)
+	}
+	expected := "1 2 3"
+	if rendered != expected {
+		t.Errorf("RenderTemplate = %q; want %q", rendered, expected)
+	}
+}