Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

service/explorer/pin.go

@@ -0,0 +1,75 @@
+package explorer
+
+import (
+	"github.com/cloudreve/Cloudreve/v4/application/dependency"
+	"github.com/cloudreve/Cloudreve/v4/inventory"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+	"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/fs"
+	"github.com/cloudreve/Cloudreve/v4/pkg/serializer"
+	"github.com/gin-gonic/gin"
+	"github.com/samber/lo"
+)
+
+type (
+	PinFileService struct {
+		Uri  string `json:"uri" binding:"required"`
+		Name string `json:"name"`
+	}
+	PinFileParameterCtx struct{}
+)
+
+// PinFileService pins new uri to sidebar
+func (service *PinFileService) PinFile(c *gin.Context) error {
+	dep := dependency.FromContext(c)
+	user := inventory.UserFromContext(c)
+	userClient := dep.UserClient()
+
+	uri, err := fs.NewUriFromString(service.Uri)
+	if err != nil {
+		return serializer.NewError(serializer.CodeParamErr, "unknown uri", err)
+	}
+
+	uriStr := uri.String()
+	for _, pin := range user.Settings.Pined {
+		if pin.Uri == uriStr {
+			if pin.Name != service.Name {
+				return serializer.NewError(serializer.CodeObjectExist, "uri already pinned with different name", nil)
+			}
+
+			return nil
+		}
+	}
+
+	user.Settings.Pined = append(user.Settings.Pined, types.PinedFile{
+		Uri:  uriStr,
+		Name: service.Name,
+	})
+	if err := userClient.SaveSettings(c, user); err != nil {
+		return serializer.NewError(serializer.CodeDBError, "failed to save settings", err)
+	}
+
+	return nil
+}
+
+// UnpinFile removes uri from sidebar
+func (service *PinFileService) UnpinFile(c *gin.Context) error {
+	dep := dependency.FromContext(c)
+	user := inventory.UserFromContext(c)
+	userClient := dep.UserClient()
+
+	uri, err := fs.NewUriFromString(service.Uri)
+	if err != nil {
+		return serializer.NewError(serializer.CodeParamErr, "unknown uri", err)
+	}
+
+	uriStr := uri.String()
+	user.Settings.Pined = lo.Filter(user.Settings.Pined, func(pin types.PinedFile, index int) bool {
+		return pin.Uri != uriStr
+	})
+
+	if err := userClient.SaveSettings(c, user); err != nil {
+		return serializer.NewError(serializer.CodeDBError, "failed to save settings", err)
+	}
+
+	return nil
+}