🏗️ microservice fabric splitting

common/captcha/generate/generate_slide_region_captcha.go

@@ -0,0 +1,56 @@
+package generate
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"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/slide"
+)
+
+// GenerateSlideRegionCaptcha generate slide region captcha
+func GenerateSlideRegionCaptcha(slide slide.Captcha, redis redis.Client, ctx context.Context) (map[string]interface{}, error) {
+	captData, err := slide.Generate()
+	if err != nil {
+		return nil, err
+	}
+
+	blockData := captData.GetData()
+	if blockData == nil {
+		return nil, errors.New("block data is nil")
+	}
+
+	var masterImageBase64, tileImageBase64 string
+	masterImageBase64, err = captData.GetMasterImage().ToBase64()
+	if err != nil {
+		return nil, err
+	}
+	tileImageBase64, err = captData.GetTileImage().ToBase64()
+	if err != nil {
+		return nil, err
+	}
+
+	blockByte, err := json.Marshal(blockData)
+	if err != nil {
+		return nil, err
+	}
+	key := helper.StringToMD5(string(blockByte))
+	err = redis.Set(ctx, constant.UserCaptchaPrefix+key, blockByte, time.Minute).Err()
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"code":        0,
+		"key":         key,
+		"image":       masterImageBase64,
+		"tile":        tileImageBase64,
+		"tile_width":  blockData.Width,
+		"tile_height": blockData.Height,
+		"tile_x":      blockData.TileX,
+		"tile_y":      blockData.TileY,
+	}, nil
+}