package service

import (
	"testing"

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

// The traditional-node path: NodeTrafficSyncJob fetches a TrafficSnapshot
// from each node panel (runtime.Remote.FetchTrafficSnapshot) and hands it
// to InboundService.SetRemoteTraffic. Before the online-store restoration,
// the snapshot's OnlineTree / ActiveInboundTree were dropped on the floor
// inside that call (the store setters were no-op stubs), so polled nodes
// never showed anyone online. This drives the exact public entry the job
// calls and asserts the snapshot's online data lands in the store.
func TestSetRemoteTraffic_FeedsOnlineStore(t *testing.T) {
	setupConflictDB(t)
	db := database.GetDB()
	svc := InboundService{}

	const nodeID = 4242
	const nodeGuid = "trad-node-guid-4242"
	svc.ClearNodeOnlineClients(nodeID)
	t.Cleanup(func() { svc.ClearNodeOnlineClients(nodeID) })

	if err := db.Create(&model.Node{
		Id:       nodeID,
		Name:     "trad-node",
		Address:  "10.0.4.2",
		Port:     2053,
		ApiToken: "t",
		Guid:     nodeGuid,
	}).Error; err != nil {
		t.Fatalf("create node: %v", err)
	}

	snap := &runtime.TrafficSnapshot{
		Inbounds: []*model.Inbound{
			{
				Tag:      "in-443-tcp",
				Enable:   true,
				Port:     443,
				Protocol: model.VLESS,
				Settings: `{"clients":[{"email":"trad@example.com"}]}`,
			},
		},
		OnlineTree:        map[string][]string{nodeGuid: {"trad@example.com"}},
		ActiveInboundTree: map[string][]string{nodeGuid: {"in-443-tcp"}},
	}

	if _, err := svc.SetRemoteTraffic(nodeID, snap, false, false); err != nil {
		t.Fatalf("SetRemoteTraffic: %v", err)
	}

	assertStringSet(t, "online union", svc.GetOnlineClients(), []string{"trad@example.com"})
	byGuid := svc.GetOnlineClientsByGuid()
	assertStringSet(t, "online byGuid", byGuid[nodeGuid], []string{"trad@example.com"})

	// The active tree is normalized from node-side tags to central tags;
	// whatever tag the adopted central inbound carries is what must show.
	var central model.Inbound
	if err := db.Where("node_id = ?", nodeID).First(&central).Error; err != nil {
		t.Fatalf("load central inbound: %v", err)
	}
	active := svc.GetActiveInboundsByGuid()
	assertStringSet(t, "active byGuid", active[nodeGuid], []string{central.Tag})

	// A failed probe makes the job clear the node; its clients must stop
	// showing as online immediately.
	svc.ClearNodeOnlineClients(nodeID)
	if got := svc.GetOnlineClients(); len(got) != 0 {
		t.Fatalf("online union after clear = %v, want empty", got)
	}
}

// Old-build nodes have no GUID tree endpoint: the job passes their flat
// OnlineEmails in the snapshot and SetRemoteTraffic must key them under
// the node's own effective identity.
func TestSetRemoteTraffic_FlatOnlineEmailsFallback(t *testing.T) {
	setupConflictDB(t)
	db := database.GetDB()
	svc := InboundService{}

	const nodeID = 4243
	const nodeGuid = "flat-node-guid-4243"
	svc.ClearNodeOnlineClients(nodeID)
	t.Cleanup(func() { svc.ClearNodeOnlineClients(nodeID) })

	if err := db.Create(&model.Node{
		Id:       nodeID,
		Name:     "flat-node",
		Address:  "10.0.4.3",
		Port:     2053,
		ApiToken: "t",
		Guid:     nodeGuid,
	}).Error; err != nil {
		t.Fatalf("create node: %v", err)
	}

	snap := &runtime.TrafficSnapshot{
		Inbounds: []*model.Inbound{
			{
				Tag:      "in-8443-tcp",
				Enable:   true,
				Port:     8443,
				Protocol: model.VLESS,
				Settings: `{"clients":[{"email":"flat@example.com"}]}`,
			},
		},
		OnlineEmails: []string{"flat@example.com"},
	}

	if _, err := svc.SetRemoteTraffic(nodeID, snap, false, false); err != nil {
		t.Fatalf("SetRemoteTraffic: %v", err)
	}

	assertStringSet(t, "online union (flat)", svc.GetOnlineClients(), []string{"flat@example.com"})
	byGuid := svc.GetOnlineClientsByGuid()
	assertStringSet(t, "online byGuid (flat)", byGuid[nodeGuid], []string{"flat@example.com"})
}