package page

import (
	"testing"

	"rhemawavetech.com/rhemawave/internal/mixer"
)

func TestCurrentDeviceIndex(t *testing.T) {
	devices := []mixer.Device{
		{Name: "Built-in Audio Analog Stereo", Label: "Internal Speakers"},
		{Name: "Built-in Audio Digital Stereo (HDMI)", Label: "HDMI | Monitor | TV"},
	}

	tests := []struct {
		name        string
		devices     []mixer.Device
		currentName string
		want        int
	}{
		{"empty list, default device", nil, "", 0},
		{"empty list, named device", nil, "USB Audio", -1},
		{"default device", devices, "", 0},
		{"exact first device match", devices, "Built-in Audio Analog Stereo", 1},
		{"exact second device match", devices, "Built-in Audio Digital Stereo (HDMI)", 2},
		{"no match", devices, "USB Audio", -1},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := currentDeviceIndex(tt.devices, tt.currentName); got != tt.want {
				t.Errorf("currentDeviceIndex(%v, %q) = %d, want %d", tt.devices, tt.currentName, got, tt.want)
			}
		})
	}
}