chore: 初始化仓库，排除二进制文件和覆盖率文件

internal/service/verification_service.go

@@ -0,0 +1,118 @@
+package service
+
+import (
+	"context"
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	"time"
+
+	"carrotskin/pkg/email"
+	"carrotskin/pkg/redis"
+)
+
+const (
+	// 验证码类型
+	VerificationTypeRegister     = "register"
+	VerificationTypeResetPassword = "reset_password"
+	VerificationTypeChangeEmail   = "change_email"
+	
+	// 验证码配置
+	CodeLength     = 6               // 验证码长度
+	CodeExpiration = 10 * time.Minute // 验证码有效期
+	CodeRateLimit  = 1 * time.Minute  // 发送频率限制
+)
+
+// GenerateVerificationCode 生成6位数字验证码
+func GenerateVerificationCode() (string, error) {
+	const digits = "0123456789"
+	code := make([]byte, CodeLength)
+	for i := range code {
+		num, err := rand.Int(rand.Reader, big.NewInt(int64(len(digits))))
+		if err != nil {
+			return "", err
+		}
+		code[i] = digits[num.Int64()]
+	}
+	return string(code), nil
+}
+
+// SendVerificationCode 发送验证码
+func SendVerificationCode(ctx context.Context, redisClient *redis.Client, emailService *email.Service, email, codeType string) error {
+	// 检查发送频率限制
+	rateLimitKey := fmt.Sprintf("verification:rate_limit:%s:%s", codeType, email)
+	exists, err := redisClient.Exists(ctx, rateLimitKey)
+	if err != nil {
+		return fmt.Errorf("检查发送频率失败: %w", err)
+	}
+	if exists > 0 {
+		return fmt.Errorf("发送过于频繁，请稍后再试")
+	}
+
+	// 生成验证码
+	code, err := GenerateVerificationCode()
+	if err != nil {
+		return fmt.Errorf("生成验证码失败: %w", err)
+	}
+
+	// 存储验证码到Redis
+	codeKey := fmt.Sprintf("verification:code:%s:%s", codeType, email)
+	if err := redisClient.Set(ctx, codeKey, code, CodeExpiration); err != nil {
+		return fmt.Errorf("存储验证码失败: %w", err)
+	}
+
+	// 设置发送频率限制
+	if err := redisClient.Set(ctx, rateLimitKey, "1", CodeRateLimit); err != nil {
+		return fmt.Errorf("设置发送频率限制失败: %w", err)
+	}
+
+	// 发送邮件
+	if err := sendVerificationEmail(emailService, email, code, codeType); err != nil {
+		// 发送失败，删除验证码
+		_ = redisClient.Del(ctx, codeKey)
+		return fmt.Errorf("发送邮件失败: %w", err)
+	}
+
+	return nil
+}
+
+// VerifyCode 验证验证码
+func VerifyCode(ctx context.Context, redisClient *redis.Client, email, code, codeType string) error {
+	codeKey := fmt.Sprintf("verification:code:%s:%s", codeType, email)
+	
+	// 从Redis获取验证码
+	storedCode, err := redisClient.Get(ctx, codeKey)
+	if err != nil {
+		return fmt.Errorf("验证码已过期或不存在")
+	}
+
+	// 验证验证码
+	if storedCode != code {
+		return fmt.Errorf("验证码错误")
+	}
+
+	// 验证成功，删除验证码
+	_ = redisClient.Del(ctx, codeKey)
+
+	return nil
+}
+
+// DeleteVerificationCode 删除验证码
+func DeleteVerificationCode(ctx context.Context, redisClient *redis.Client, email, codeType string) error {
+	codeKey := fmt.Sprintf("verification:code:%s:%s", codeType, email)
+	return redisClient.Del(ctx, codeKey)
+}
+
+// sendVerificationEmail 根据类型发送邮件
+func sendVerificationEmail(emailService *email.Service, to, code, codeType string) error {
+	switch codeType {
+	case VerificationTypeRegister:
+		return emailService.SendEmailVerification(to, code)
+	case VerificationTypeResetPassword:
+		return emailService.SendResetPassword(to, code)
+	case VerificationTypeChangeEmail:
+		return emailService.SendChangeEmail(to, code)
+	default:
+		return emailService.SendVerificationCode(to, code, codeType)
+	}
+}