f add

app/main/api/internal/logic/agent/getinviteposterlogic.go

@@ -0,0 +1,67 @@
+package agent
+
+import (
+	"context"
+	"encoding/base64"
+	"strings"
+
+	"ycc-server/app/main/api/internal/svc"
+	"ycc-server/app/main/api/internal/types"
+	"ycc-server/app/main/model"
+	"ycc-server/common/ctxdata"
+	"ycc-server/common/xerr"
+
+	"github.com/pkg/errors"
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type GetInvitePosterLogic struct {
+	logx.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewGetInvitePosterLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetInvitePosterLogic {
+	return &GetInvitePosterLogic{
+		Logger: logx.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+// GetInvitePoster 使用 ImageService（invitation 类型，yq_qrcode_1.png + 二维码）生成海报
+func (l *GetInvitePosterLogic) GetInvitePoster(req *types.GetInvitePosterReq) (pngBytes []byte, err error) {
+	userID, err := ctxdata.GetUidFromCtx(l.ctx)
+	if err != nil {
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "获取用户信息失败, %v", err)
+	}
+
+	_, err = l.svcCtx.AgentModel.FindOneByUserId(l.ctx, userID)
+	if err != nil {
+		if errors.Is(err, model.ErrNotFound) {
+			return nil, errors.Wrapf(xerr.NewErrMsg("您不是代理"), "")
+		}
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询代理信息失败, %v", err)
+	}
+
+	inviteLink := strings.TrimSpace(req.InviteLink)
+	if inviteLink == "" {
+		return nil, errors.Wrapf(xerr.NewErrMsg("邀请链接不能为空"), "")
+	}
+
+	pngBytes, _, err = l.svcCtx.ImageService.ProcessImageWithQRCode("invitation", inviteLink)
+	if err != nil {
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "生成邀请海报失败: %v", err)
+	}
+
+	return pngBytes, nil
+}
+
+// GetInvitePosterBase64 返回 base64 字符串，供前端 data URL 使用
+func (l *GetInvitePosterLogic) GetInvitePosterBase64(req *types.GetInvitePosterReq) (string, error) {
+	pngBytes, err := l.GetInvitePoster(req)
+	if err != nil {
+		return "", err
+	}
+	return base64.StdEncoding.EncodeToString(pngBytes), nil
+}