Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

ent/schema/file.go

@@ -0,0 +1,73 @@
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+)
+
+// File holds the schema definition for the File entity.
+type File struct {
+	ent.Schema
+}
+
+// Fields of the File.
+func (File) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("type"),
+		field.String("name"),
+		field.Int("owner_id"),
+		field.Int64("size").
+			Default(0),
+		field.Int("primary_entity").
+			Optional(),
+		field.Int("file_children").
+			Optional(),
+		field.Bool("is_symbolic").
+			Default(false),
+		field.JSON("props", &types.FileProps{}).Optional(),
+		field.Int("storage_policy_files").
+			Optional(),
+	}
+}
+
+// Edges of the File.
+func (File) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("owner", User.Type).
+			Ref("files").
+			Field("owner_id").
+			Unique().
+			Required(),
+		edge.From("storage_policies", StoragePolicy.Type).
+			Ref("files").
+			Field("storage_policy_files").
+			Unique(),
+		edge.To("children", File.Type).
+			From("parent").
+			Field("file_children").
+			Unique(),
+		edge.To("metadata", Metadata.Type),
+		edge.To("entities", Entity.Type),
+		edge.To("shares", Share.Type),
+		edge.To("direct_links", DirectLink.Type),
+	}
+}
+
+// Indexes of the File.
+func (File) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("file_children", "name").
+			Unique(),
+		index.Fields("file_children", "type", "updated_at"),
+		index.Fields("file_children", "type", "size"),
+	}
+}
+
+func (File) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		CommonMixin{},
+	}
+}