package service

import (
	"testing"

	"github.com/mhsanaei/3x-ui/v3/database"
	"github.com/mhsanaei/3x-ui/v3/database/model"
)

// #4983: a transitive sub-node learned from a direct node must surface as its
// own read-only entry nested under its parent, and per-GUID counts must split a
// direct node's own inbounds from its sub-nodes'.
func TestGetNodeTree_SurfacesTransitiveNodeNestedUnderParent(t *testing.T) {
	setupConflictDB(t)
	db := database.GetDB()

	svc := NodeService{}
	selfGuid, _ := (&SettingService{}).GetPanelGuid()

	if err := db.Create(&model.Node{
		Id: 1, Name: "Node2", Address: "10.0.0.2", Port: 2053,
		ApiToken: "t", Guid: "node2-guid", Status: "online",
	}).Error; err != nil {
		t.Fatalf("create node: %v", err)
	}

	// Node2's own inbound and a transitive inbound physically on Node3
	// (managed through Node2, so node_id = Node2 but origin = Node3).
	nid := 1
	if err := db.Create(&model.Inbound{Tag: "n1-own", Enable: true, Port: 443, Protocol: model.VLESS, Settings: `{"clients":[]}`, NodeID: &nid, OriginNodeGuid: "node2-guid"}).Error; err != nil {
		t.Fatalf("create own inbound: %v", err)
	}
	if err := db.Create(&model.Inbound{Tag: "n1-via", Enable: true, Port: 8443, Protocol: model.VLESS, Settings: `{"clients":[]}`, NodeID: &nid, OriginNodeGuid: "node3-guid"}).Error; err != nil {
		t.Fatalf("create transitive inbound: %v", err)
	}

	// The heartbeat learned that Node2 manages Node3.
	nodeDescendantsMu.Lock()
	nodeDescendantsCache[1] = []model.NodeSummary{{
		Guid: "node3-guid", ParentGuid: "node2-guid", Name: "Node3", Address: "10.0.0.3", Status: "online",
	}}
	nodeDescendantsMu.Unlock()
	t.Cleanup(func() {
		nodeDescendantsMu.Lock()
		nodeDescendantsCache = map[int][]model.NodeSummary{}
		nodeDescendantsMu.Unlock()
	})

	tree, err := svc.GetNodeTree()
	if err != nil {
		t.Fatalf("GetNodeTree: %v", err)
	}

	var node2, node3 *model.Node
	for _, n := range tree {
		switch n.Guid {
		case "node2-guid":
			node2 = n
		case "node3-guid":
			node3 = n
		}
	}
	if node2 == nil || node3 == nil {
		t.Fatalf("expected Node2 + transitive Node3, got %d nodes", len(tree))
	}
	if node2.ParentGuid != selfGuid {
		t.Errorf("Node2 parent = %q, want this panel's GUID %q", node2.ParentGuid, selfGuid)
	}
	if !node3.Transitive || node3.ParentGuid != "node2-guid" {
		t.Errorf("Node3 should be transitive under node2-guid, got transitive=%v parent=%q", node3.Transitive, node3.ParentGuid)
	}
	if node3.Id != 0 {
		t.Errorf("transitive node must be a read-only projection (Id 0), got Id=%d", node3.Id)
	}
	if node2.InboundCount != 1 {
		t.Errorf("Node2 should host only its own inbound, got InboundCount=%d", node2.InboundCount)
	}
	if node3.InboundCount != 1 {
		t.Errorf("transitive Node3 should host its 1 inbound, got %d", node3.InboundCount)
	}
}