package monitor

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

// Color styles
var (
	CBrightGreen = tcell.StyleDefault.Foreground(tcell.ColorGreen).Bold(true)
	CGreen       = tcell.StyleDefault.Foreground(tcell.ColorGreen)
	CDimGreen    = tcell.StyleDefault.Foreground(tcell.ColorGreen).Dim(true)
	CYellow      = tcell.StyleDefault.Foreground(tcell.ColorYellow)
	COrange      = tcell.StyleDefault.Foreground(tcell.ColorOrange)
	CRed         = tcell.StyleDefault.Foreground(tcell.ColorRed)
	CBrightRed   = tcell.StyleDefault.Foreground(tcell.ColorRed).Bold(true)
	CDefault     = tcell.StyleDefault

	// Rainbow colors for the spinner
	CRainbow = []tcell.Style{
		tcell.StyleDefault.Foreground(tcell.ColorRed),
		tcell.StyleDefault.Foreground(tcell.ColorOrange),
		tcell.StyleDefault.Foreground(tcell.ColorYellow),
		tcell.StyleDefault.Foreground(tcell.ColorGreen),
		tcell.StyleDefault.Foreground(tcell.ColorBlue),
		tcell.StyleDefault.Foreground(tcell.ColorPurple),
	}
)

// MeterColorForValue returns the appropriate color style for a meter value
// value: current value of the meter
// maxValue: maximum value of the meter
// reverse: if true, low values are good (green) and high values are bad (red)
//
//	if false, high values are good (green) and low values are bad (red)
func MeterColorForValue(value, maxValue int, reverse bool) tcell.Style {
	// Calculate percentage
	percentage := float64(value) / float64(maxValue) * 100

	// For reverse mode (low is good), invert the percentage
	if reverse {
		percentage = 100 - percentage
	}

	// Return color based on percentage (after any reversal)
	// Now high percentage always means "good" and low percentage means "bad"
	switch {
	case percentage >= 90:
		return CBrightGreen
	case percentage >= 75:
		return CGreen
	case percentage >= 60:
		return CDimGreen
	case percentage >= 40:
		return CYellow
	case percentage >= 20:
		return COrange
	default:
		return CRed
	}
}

// StyleLatency returns the appropriate style for latency values
func StyleLatency(ms float64) tcell.Style {
	switch {
	case ms < 50:
		return CBrightGreen
	case ms < 100:
		return CGreen
	case ms < 200:
		return CYellow
	default:
		return CRed
	}
}

// StyleLoss returns the appropriate style for packet loss percentages
func StyleLoss(p float64) tcell.Style {
	switch {
	case p == 0:
		return CBrightGreen
	case p < 5:
		return CYellow
	default:
		return CBrightRed
	}
}