//go:build linux
// +build linux

package monitor

import (
	"testing"

	tcell "github.com/gdamore/tcell/v2"
)

// TestMeterColorForValue tests the MeterColorForValue function
func TestMeterColorForValue(t *testing.T) {
	tests := []struct {
		name      string
		value     int
		maxValue  int
		reverse   bool
		wantColor tcell.Style
	}{
		// Reverse mode tests (low is good, high is bad)
		{
			name:      "reverse mode: 0% (best)",
			value:     0,
			maxValue:  10,
			reverse:   true,
			wantColor: CBrightGreen,
		},
		{
			name:      "reverse mode: 10% (good)",
			value:     1,
			maxValue:  10,
			reverse:   true,
			wantColor: CBrightGreen,
		},
		{
			name:      "reverse mode: 50% (medium)",
			value:     5,
			maxValue:  10,
			reverse:   true,
			wantColor: CYellow,
		},
		{
			name:      "reverse mode: 90% (bad)",
			value:     9,
			maxValue:  10,
			reverse:   true,
			wantColor: CRed,
		},
		{
			name:      "reverse mode: 100% (worst)",
			value:     10,
			maxValue:  10,
			reverse:   true,
			wantColor: CRed,
		},

		// Normal mode tests (high is good, low is bad)
		{
			name:      "normal mode: 0% (worst)",
			value:     0,
			maxValue:  10,
			reverse:   false,
			wantColor: CRed,
		},
		{
			name:      "normal mode: 10% (bad)",
			value:     1,
			maxValue:  10,
			reverse:   false,
			wantColor: CRed,
		},
		{
			name:      "normal mode: 50% (medium)",
			value:     5,
			maxValue:  10,
			reverse:   false,
			wantColor: CYellow,
		},
		{
			name:      "normal mode: 90% (good)",
			value:     9,
			maxValue:  10,
			reverse:   false,
			wantColor: CBrightGreen,
		},
		{
			name:      "normal mode: 100% (best)",
			value:     10,
			maxValue:  10,
			reverse:   false,
			wantColor: CBrightGreen,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := MeterColorForValue(tt.value, tt.maxValue, tt.reverse)
			if got != tt.wantColor {
				t.Errorf("MeterColorForValue(%d, %d, %v) = %v, want %v",
					tt.value, tt.maxValue, tt.reverse, got, tt.wantColor)
			}
		})
	}
}