package cabin

import (
	"fmt"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/safing/portmaster/spn/conf"
	"github.com/safing/portmaster/spn/hub"
)

func TestIdentity(t *testing.T) {
	t.Parallel()

	// Register config options for public hub.
	if err := prepPublicHubConfig(); err != nil {
		t.Fatal(err)
	}

	// Create new identity.
	identityTestKey := "core:spn/public/identity-test"
	id, err := CreateIdentity(module.m.Ctx(), conf.MainMapName)
	if err != nil {
		t.Fatal(err)
	}
	id.SetKey(identityTestKey)

	// Check values
	// Identity
	assert.NotEmpty(t, id.ID, "id.ID must be set")
	assert.NotEmpty(t, id.Map, "id.Map must be set")
	assert.NotNil(t, id.Signet, "id.Signet must be set")
	assert.NotNil(t, id.infoExportCache, "id.infoExportCache must be set")
	assert.NotNil(t, id.statusExportCache, "id.statusExportCache must be set")
	// Hub
	assert.NotEmpty(t, id.Hub.ID, "hub.ID must be set")
	assert.NotEmpty(t, id.Hub.Map, "hub.Map must be set")
	assert.NotZero(t, id.Hub.FirstSeen, "hub.FirstSeen must be set")
	// Info
	assert.NotEmpty(t, id.Hub.Info.ID, "info.ID must be set")
	assert.NotEqual(t, 0, id.Hub.Info.Timestamp, "info.Timestamp must be set")
	assert.NotEqual(t, "", id.Hub.Info.Name, "info.Name must be set (to hostname)")
	// Status
	assert.NotEqual(t, 0, id.Hub.Status.Timestamp, "status.Timestamp must be set")
	assert.NotEmpty(t, id.Hub.Status.Keys, "status.Keys must be set")

	fmt.Printf("id: %+v\n", id)
	fmt.Printf("id.hub: %+v\n", id.Hub)
	fmt.Printf("id.Hub.Info: %+v\n", id.Hub.Info)
	fmt.Printf("id.Hub.Status: %+v\n", id.Hub.Status)

	// Maintenance is run in creation, so nothing should change now.
	changed, err := id.MaintainAnnouncement(nil, false)
	if err != nil {
		t.Fatal(err)
	}
	if changed {
		t.Error("unexpected change of announcement")
	}
	changed, err = id.MaintainStatus(nil, nil, nil, false)
	if err != nil {
		t.Fatal(err)
	}
	if changed {
		t.Error("unexpected change of status")
	}

	// Change lanes.
	lanes := []*hub.Lane{
		{
			ID:       "A",
			Capacity: 1,
			Latency:  2,
		},
		{
			ID:       "B",
			Capacity: 3,
			Latency:  4,
		},
		{
			ID:       "C",
			Capacity: 5,
			Latency:  6,
		},
	}
	changed, err = id.MaintainStatus(lanes, new(int), nil, false)
	if err != nil {
		t.Fatal(err)
	}
	if !changed {
		t.Error("status should have changed")
	}

	// Change nothing.
	changed, err = id.MaintainStatus(lanes, new(int), nil, false)
	if err != nil {
		t.Fatal(err)
	}
	if changed {
		t.Error("unexpected change of status")
	}

	// Exporting
	_, err = id.ExportAnnouncement()
	if err != nil {
		t.Fatal(err)
	}
	_, err = id.ExportStatus()
	if err != nil {
		t.Fatal(err)
	}

	// Ensure the Measurements reset the values.
	measurements := id.Hub.GetMeasurements()
	measurements.SetLatency(0)
	measurements.SetCapacity(0)
	measurements.SetCalculatedCost(hub.MaxCalculatedCost)

	// Save to and load from database.
	err = id.Save()
	if err != nil {
		t.Fatal(err)
	}
	id2, _, err := LoadIdentity(identityTestKey)
	if err != nil {
		t.Fatal(err)
	}

	// Reset everything that should not be compared.
	id.infoExportCache = nil
	id2.infoExportCache = nil
	id.statusExportCache = nil
	id2.statusExportCache = nil
	id.ExchKeys = nil
	id2.ExchKeys = nil
	id.Hub.Status = nil
	id2.Hub.Status = nil
	id.Hub.PublicKey = nil
	id2.Hub.PublicKey = nil

	// Check important aspects of the identities.
	assert.Equal(t, id.ID, id2.ID, "identity IDs must be equal")
	assert.Equal(t, id.Map, id2.Map, "identity Maps should be equal")
	assert.Equal(t, id.Hub, id2.Hub, "identity Hubs should be equal")
	assert.Equal(t, id.Signet, id2.Signet, "identity Signets should be equal")
}