package ui

import (
	"image/color"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/theme"
)

// lookupColor 从当前主题取色。
func lookupColor(name fyne.ThemeColorName) color.Color {
	if app := fyne.CurrentApp(); app != nil {
		s := app.Settings()
		return s.Theme().Color(name, s.ThemeVariant())
	}
	return theme.DefaultTheme().Color(name, theme.VariantDark)
}

// withAlpha 调整颜色透明度。
func withAlpha(c color.Color, a uint8) color.Color {
	n := color.NRGBAModel.Convert(c).(color.NRGBA)
	n.A = a
	return n
}

// 界面配色集中在这里，方便统一调整。
func colorUserBubble() color.Color {
	return withAlpha(lookupColor(theme.ColorNamePrimary), 0x3A)
}

func colorBotBubble() color.Color {
	return withAlpha(lookupColor(theme.ColorNameInputBackground), 0xF2)
}

func colorErrBubble() color.Color {
	return withAlpha(lookupColor(theme.ColorNameError), 0x28)
}

func colorBorder() color.Color {
	return withAlpha(lookupColor(theme.ColorNameInputBorder), 0xB0)
}