🏗️ microservice fabric splitting

common/captcha/generate/generate_rotate_captcha.go

@@ -0,0 +1,46 @@
+package generate
+
+import (
+	"context"
+	"encoding/json"
+	"schisandra-album-cloud-microservices/common/constant"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+	"github.com/wenlng/go-captcha-assets/helper"
+	"github.com/wenlng/go-captcha/v2/rotate"
+)
+
+// GenerateRotateCaptcha generate rotate captcha
+func GenerateRotateCaptcha(captcha rotate.Captcha, redis *redis.Client, ctx context.Context) (map[string]interface{}, error) {
+	captchaData, err := captcha.Generate()
+	if err != nil {
+		return nil, err
+	}
+	blockData := captchaData.GetData()
+	if blockData == nil {
+		return nil, nil
+	}
+	masterImageBase64, err := captchaData.GetMasterImage().ToBase64()
+	if err != nil {
+		return nil, err
+	}
+	thumbImageBase64, err := captchaData.GetThumbImage().ToBase64()
+	if err != nil {
+		return nil, err
+	}
+	dotsByte, err := json.Marshal(blockData)
+	if err != nil {
+		return nil, err
+	}
+	key := helper.StringToMD5(string(dotsByte))
+	err = redis.Set(ctx, constant.UserCaptchaPrefix+key, dotsByte, time.Minute).Err()
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"key":   key,
+		"image": masterImageBase64,
+		"thumb": thumbImageBase64,
+	}, nil
+}