Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

ent/schema/directlink.go

@@ -0,0 +1,39 @@
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+)
+
+// DirectLink holds the schema definition for the DirectLink entity.
+type DirectLink struct {
+	ent.Schema
+}
+
+// Fields of the DirectLink.
+func (DirectLink) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name"),
+		field.Int("downloads"),
+		field.Int("file_id"),
+		field.Int("speed"),
+	}
+}
+
+// Edges of the DirectLink.
+func (DirectLink) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("file", File.Type).
+			Ref("direct_links").
+			Field("file_id").
+			Required().
+			Unique(),
+	}
+}
+
+func (DirectLink) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		CommonMixin{},
+	}
+}