package mixer

import "testing"

func TestHumanizeDeviceName(t *testing.T) {
	tests := []struct {
		name string
		raw  string
		want string
	}{
		{"hdmi description", "Built-in Audio Digital Stereo (HDMI)", "HDMI | Monitor | TV"},
		{"hdmi alsa name", "alsa_output.pci-0000_00_1f.3.hdmi-stereo-extra1", "HDMI | Monitor | TV"},
		{"monitor", "Monitor", "HDMI | Monitor | TV"},
		{"tv", "TV", "HDMI | Monitor | TV"},
		{"uppercase hdmi", "HDMI", "HDMI | Monitor | TV"},
		{"headset", "Headset", "Headset"},
		{"headphones", "WH-1000XM4 Headphones", "Headset"},
		{"bluetooth headset name", "bluez_output.00_11_22_33_44_55.headset-head-unit", "Headset"},
		{"usb description", "USB Audio", "USB"},
		{"usb alsa name", "alsa_output.usb-046d_0825-00.analog-stereo", "USB"},
		{"internal analog description", "Built-in Audio Analog Stereo", "Internal Speakers"},
		{"internal alsa name", "alsa_output.pci-0000_00_1f.3.analog-stereo", "Internal Speakers"},
		{"internal speakers label", "Internal Speakers", "Internal Speakers"},
		{"virtual speaker", "Virtual Speaker", "Internal Speakers"},
		{"no match fallback", "Custom Node 42", "Custom Node 42"},
		{"empty fallback", "", ""},
	}

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

func TestMatchDeviceName(t *testing.T) {
	names := []string{
		"Built-in Audio Analog Stereo",
		"Built-in Audio Digital Stereo (HDMI)",
		"USB Audio",
		"Headset",
	}

	tests := []struct {
		name      string
		preferred string
		want      string
		wantOK    bool
	}{
		{"empty preferred", "", "", false},
		{"exact match", "USB Audio", "USB Audio", true},
		{"substring match", "hdmi", "Built-in Audio Digital Stereo (HDMI)", true},
		{"suffix tolerance", "Built-in Audio Digital Stereo", "Built-in Audio Digital Stereo (HDMI)", true},
		{"case insensitive", "usb audio", "USB Audio", true},
		{"no match", "Bluetooth Dongle", "", false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, ok := matchDevice(names, tt.preferred)
			if ok != tt.wantOK {
				t.Fatalf("matchDevice(%q) ok = %v, want %v", tt.preferred, ok, tt.wantOK)
			}
			if ok && got != tt.want {
				t.Errorf("matchDevice(%q) = %q, want %q", tt.preferred, got, tt.want)
			}
		})
	}
}