//go:build linux

package monitor_test

import (
	"testing"

	"git.eeqj.de/sneak/rtnetmon/internal/monitor"
)

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

	mon := monitor.NewMonitor("test0", "Test Interface A", "test1",
		"Test Interface B", "/tmp/test.log")

	if mon.InterfaceA() == nil {
		t.Fatal("interfaceA is nil")
	}

	if mon.InterfaceB() == nil {
		t.Fatal("interfaceB is nil")
	}

	if mon.InterfaceA().Name != "test0" {
		t.Errorf("interfaceA.Name = %q, want %q", mon.InterfaceA().Name, "test0")
	}

	if mon.InterfaceB().Name != "test1" {
		t.Errorf("interfaceB.Name = %q, want %q", mon.InterfaceB().Name, "test1")
	}

	if mon.ICMPTimeout.Milliseconds() != 500 {
		t.Errorf("ICMPTimeout = %dms, want 500ms", mon.ICMPTimeout.Milliseconds())
	}

	if mon.PacketLossPings != 20 {
		t.Errorf("PacketLossPings = %d, want 20", mon.PacketLossPings)
	}

	if mon.ReachabilityHosts() == nil {
		t.Error("reachabilityHosts is nil")
	}

	if mon.PacketLossHosts() == nil {
		t.Error("packetLossHosts is nil")
	}

	if mon.TCPHosts() == nil {
		t.Error("tcpHosts is nil")
	}
}

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

	mon := monitor.NewMonitor("test0", "Test A", "test1", "Test B", "")

	mon.AddReachabilityHost("8.8.8.8")
	mon.AddReachabilityHost("google.com")

	if len(mon.ReachabilityHosts()) != 2 {
		t.Errorf("reachability hosts = %d, want 2", len(mon.ReachabilityHosts()))
	}

	mon.AddPacketLossHost("github.com")

	if len(mon.PacketLossHosts()) != 1 {
		t.Errorf("packet loss hosts = %d, want 1", len(mon.PacketLossHosts()))
	}

	mon.AddTCPHost("google.com:443")
	mon.AddTCPHost("github.com:443")

	if len(mon.TCPHosts()) != 2 {
		t.Errorf("tcp hosts = %d, want 2", len(mon.TCPHosts()))
	}
}

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

	tests := []struct {
		name                      string
		data                      []float64
		wantMin, wantMax, wantAvg float64
	}{
		{"empty slice", []float64{}, 0, 0, 0},
		{"single value", []float64{5.0}, 5.0, 5.0, 5.0},
		{"multiple values", []float64{1.0, 2.0, 3.0, 4.0, 5.0}, 1.0, 5.0, 3.0},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			mn, mx, avg, _ := monitor.MinMaxAvgStd(tt.data)
			if mn != tt.wantMin {
				t.Errorf("min = %v, want %v", mn, tt.wantMin)
			}

			if mx != tt.wantMax {
				t.Errorf("max = %v, want %v", mx, tt.wantMax)
			}

			if avg != tt.wantAvg {
				t.Errorf("avg = %v, want %v", avg, tt.wantAvg)
			}
		})
	}
}