Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

ent/schema/task.go

@@ -0,0 +1,46 @@
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+	"github.com/gofrs/uuid"
+)
+
+// Task holds the schema definition for the Task entity.
+type Task struct {
+	ent.Schema
+}
+
+// Fields of the Task.
+func (Task) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("type"),
+		field.Enum("status").
+			Values("queued", "processing", "suspending", "error", "canceled", "completed").
+			Default("queued"),
+		field.JSON("public_state", &types.TaskPublicState{}),
+		field.Text("private_state").Optional(),
+		field.UUID("correlation_id", uuid.Must(uuid.NewV4())).
+			Optional().
+			Immutable(),
+		field.Int("user_tasks").Optional(),
+	}
+}
+
+// Edges of the Task.
+func (Task) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("user", User.Type).
+			Ref("tasks").
+			Field("user_tasks").
+			Unique(),
+	}
+}
+
+func (Task) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		CommonMixin{},
+	}
+}