Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/service/emailser/email.go

@@ -0,0 +1,54 @@
+package emailser
+
+import (
+	"context"
+	"strings"
+
+	"91porn-server/app/appg"
+	"91porn-server/common/constant/redisconst"
+	"91porn-server/common/log"
+	"91porn-server/common/stderr"
+
+	"github.com/badoux/checkmail"
+)
+
+// CheckEmail 校验邮件地址是否合法
+func CheckEmail(ctx context.Context, emailStr string) stderr.Code {
+	if emailStr == "" {
+		return stderr.ErrInvalidEmail
+	}
+	if err := checkmail.ValidateFormat(emailStr); err != nil {
+		log.ErrorX(ctx, "invalid email", log.Any("email", emailStr), log.E(err))
+		return stderr.ErrInvalidEmail
+	}
+	return stderr.Success
+}
+
+// VerifyCaptchaCode 核对验证码
+func VerifyCaptchaCode(ctx context.Context, emailAddr, code string) stderr.Code {
+	emailAddr = strings.TrimSpace(emailAddr)
+	if strings.HasSuffix(emailAddr, "@dsp.xyz") { // pass the test email
+		log.InfoX(ctx, "VerifyCaptchaCode dismiss test email", log.Any("email", emailAddr))
+		return stderr.Success
+	}
+	if code := CheckEmail(ctx, emailAddr); code != stderr.Success {
+		return code
+	}
+	redisKey := redisconst.GetEmailCaptchaKey(emailAddr)
+	redisCode, err := appg.Redis.Get(redisKey)
+	if err != nil {
+		log.ErrorX(ctx, "VerifyCaptchaCode redis get err", log.Any("emailAddr", emailAddr),
+			log.Any("redisKey", redisKey), log.E(err))
+		return stderr.ErrNetWorkBusy
+	}
+	if redisCode == nil {
+		log.InfoX(ctx, "VerifyCaptchaCode nil code in redis", log.Any("emailAddr", emailAddr), log.Any("code", code))
+		return stderr.ErrCaptcha
+	}
+	if *redisCode != code {
+		log.InfoX(ctx, "VerifyCaptchaCode invalid", log.Any("emailAddr", emailAddr), log.Any("code", code),
+			log.Any("redisCode", redisCode))
+		return stderr.ErrCaptchaInvalid
+	}
+	return stderr.Success
+}