feat: 迁移plant

app/plant/rpc/internal/logic/starPostLogic.go

@@ -0,0 +1,39 @@
+package logic
+
+import (
+	"context"
+	"errors"
+	"github.com/zeromicro/go-zero/core/logx"
+	"gorm.io/gorm"
+	plantModel "sundynix-micro-go/app/plant/model"
+	"sundynix-micro-go/app/plant/rpc/internal/svc"
+	"sundynix-micro-go/app/plant/rpc/plant"
+)
+
+type StarPostLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewStarPostLogic(ctx context.Context, svcCtx *svc.ServiceContext) *StarPostLogic {
+	return &StarPostLogic{ctx: ctx, svcCtx: svcCtx, Logger: logx.WithContext(ctx)}
+}
+
+func (l *StarPostLogic) StarPost(in *plant.LikePostReq) (*plant.CommonResp, error) {
+	var existing plantModel.UserStar
+	err := l.svcCtx.DB.Where("user_id = ? AND target_id = ? AND type = ?", in.UserId, in.PostId, "post").First(&existing).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		// 新增收藏
+		star := plantModel.UserStar{UserID: in.UserId, TargetID: in.PostId, Type: "post"}
+		if err2 := l.svcCtx.DB.Create(&star).Error; err2 != nil {
+			return nil, err2
+		}
+		l.svcCtx.DB.Model(&plantModel.Post{}).Where("id = ?", in.PostId).UpdateColumn("star_count", gorm.Expr("star_count + 1"))
+	} else {
+		// 取消收藏
+		l.svcCtx.DB.Delete(&existing)
+		l.svcCtx.DB.Model(&plantModel.Post{}).Where("id = ?", in.PostId).UpdateColumn("star_count", gorm.Expr("GREATEST(star_count - 1, 0)"))
+	}
+	return &plant.CommonResp{Code: 0, Msg: "ok"}, nil
+}