Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

pkg/filemanager/driver/local/entity.go

@@ -0,0 +1,75 @@
+package local
+
+import (
+	"github.com/cloudreve/Cloudreve/v4/ent"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+	"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/fs"
+	"github.com/cloudreve/Cloudreve/v4/pkg/util"
+	"github.com/gofrs/uuid"
+	"os"
+	"time"
+)
+
+// NewLocalFileEntity creates a new local file entity.
+func NewLocalFileEntity(t types.EntityType, src string) (fs.Entity, error) {
+	info, err := os.Stat(util.RelativePath(src))
+	if err != nil {
+		return nil, err
+	}
+
+	return &localFileEntity{
+		t:    t,
+		src:  src,
+		size: info.Size(),
+	}, nil
+}
+
+type localFileEntity struct {
+	t    types.EntityType
+	src  string
+	size int64
+}
+
+func (l *localFileEntity) ID() int {
+	return 0
+}
+
+func (l *localFileEntity) Type() types.EntityType {
+	return l.t
+}
+
+func (l *localFileEntity) Size() int64 {
+	return l.size
+}
+
+func (l *localFileEntity) UpdatedAt() time.Time {
+	return time.Now()
+}
+
+func (l *localFileEntity) CreatedAt() time.Time {
+	return time.Now()
+}
+
+func (l *localFileEntity) CreatedBy() *ent.User {
+	return nil
+}
+
+func (l *localFileEntity) Source() string {
+	return l.src
+}
+
+func (l *localFileEntity) ReferenceCount() int {
+	return 1
+}
+
+func (l *localFileEntity) PolicyID() int {
+	return 0
+}
+
+func (l *localFileEntity) UploadSessionID() *uuid.UUID {
+	return nil
+}
+
+func (l *localFileEntity) Model() *ent.Entity {
+	return nil
+}