HostKeeper/pkg/tui/themes.go

package tui

import "github.com/charmbracelet/lipgloss"

// Theme defines a complete color palette for the TUI
type Theme struct {
	Name       string
	Fg         lipgloss.Color
	FgMute     lipgloss.Color
	Bg         lipgloss.Color
	BgSel      lipgloss.Color
	Red        lipgloss.Color
	Orange     lipgloss.Color
	Yellow     lipgloss.Color
	Green      lipgloss.Color
	Aqua       lipgloss.Color
	Blue       lipgloss.Color
	Purple     lipgloss.Color
	Border     lipgloss.Color
	TabBg      lipgloss.Color
}

// Predefined themes
var (
	ThemeDark = Theme{
		Name:       "dark",
		Fg:         lipgloss.Color("#d4be98"),
		FgMute:     lipgloss.Color("#7c6f64"),
		Bg:         lipgloss.Color("#1d2021"),
		BgSel:      lipgloss.Color("#45403d"),
		Red:        lipgloss.Color("#ea6962"),
		Orange:     lipgloss.Color("#e78a4e"),
		Yellow:     lipgloss.Color("#d8a657"),
		Green:      lipgloss.Color("#a9b665"),
		Aqua:       lipgloss.Color("#89b482"),
		Blue:       lipgloss.Color("#7daea3"),
		Purple:     lipgloss.Color("#d3869b"),
		Border:     lipgloss.Color("#504945"),
		TabBg:      lipgloss.Color("#1d2021"),
	}

	ThemeLight = Theme{
		Name:       "light",
		Fg:         lipgloss.Color("#3c3836"),
		FgMute:     lipgloss.Color("#7c6f64"),
		Bg:         lipgloss.Color("#f2e5bc"),
		BgSel:      lipgloss.Color("#d5c4a1"),
		Red:        lipgloss.Color("#cc241d"),
		Orange:     lipgloss.Color("#d65d0e"),
		Yellow:     lipgloss.Color("#d79921"),
		Green:      lipgloss.Color("#98971a"),
		Aqua:       lipgloss.Color("#689d6a"),
		Blue:       lipgloss.Color("#458588"),
		Purple:     lipgloss.Color("#b16286"),
		Border:     lipgloss.Color("#a89984"),
		TabBg:      lipgloss.Color("#f2e5bc"),
	}

	ThemeDracula = Theme{
		Name:       "dracula",
		Fg:         lipgloss.Color("#f8f8f2"),
		FgMute:     lipgloss.Color("#6272a4"),
		Bg:         lipgloss.Color("#282a36"),
		BgSel:      lipgloss.Color("#44475a"),
		Red:        lipgloss.Color("#ff5555"),
		Orange:     lipgloss.Color("#ffb86c"),
		Yellow:     lipgloss.Color("#f1fa8c"),
		Green:      lipgloss.Color("#50fa7b"),
		Aqua:       lipgloss.Color("#8be9fd"),
		Blue:       lipgloss.Color("#6272a4"),
		Purple:     lipgloss.Color("#bd93f9"),
		Border:     lipgloss.Color("#44475a"),
		TabBg:      lipgloss.Color("#282a36"),
	}
)

// Themes is the registry of all available themes
var Themes = map[string]Theme{
	"dark":    ThemeDark,
	"light":   ThemeLight,
	"dracula": ThemeDracula,
}

// activeTheme holds the currently active theme
var activeTheme = ThemeDark

// GetTheme returns a theme by name, defaults to dark
func GetTheme(name string) Theme {
	if t, ok := Themes[name]; ok {
		return t
	}
	return ThemeDark
}

// SetTheme applies a theme by name and updates all component styles
func SetTheme(name string) {
	theme := GetTheme(name)
	activeTheme = theme
	applyTheme(theme)
}

// GetActiveTheme returns the currently active theme
func GetActiveTheme() Theme {
	return activeTheme
}

// applyTheme updates all component styles from the given theme
func applyTheme(t Theme) {
	// Palette aliases
	gbFg = t.Fg
	gbFgMute = t.FgMute
	gbBgSel = t.BgSel
	gbRed = t.Red
	gbOrange = t.Orange
	gbYellow = t.Yellow
	gbGreen = t.Green
	gbAqua = t.Aqua
	gbBlue = t.Blue
	gbPurple = t.Purple
	gbBorder = t.Border

	// Component styles
	TabActiveStyle = lipgloss.NewStyle().Background(t.Yellow).Foreground(t.Bg).Bold(true).Padding(0, 2)
	TabInactiveStyle = lipgloss.NewStyle().Background(t.Border).Foreground(t.FgMute).Padding(0, 2)
	TabBarStyle = lipgloss.NewStyle().Background(t.TabBg)
	StatusBarStyle = lipgloss.NewStyle().Background(t.Green).Foreground(t.Bg).Padding(0, 1)
	AppTitleStyle = lipgloss.NewStyle().Foreground(t.Yellow).Bold(true)
	HighlightStyle = lipgloss.NewStyle().Foreground(t.Orange).Bold(true)
	SelectedStyle = lipgloss.NewStyle().Foreground(t.Fg).Background(t.BgSel).Bold(true).Padding(0, 1)
	ErrorStyle = lipgloss.NewStyle().Foreground(t.Red).Bold(true)
	SuccessStyle = lipgloss.NewStyle().Foreground(t.Green).Bold(true)
	InfoStyle = lipgloss.NewStyle().Foreground(t.Aqua)
	SubtitleStyle = lipgloss.NewStyle().Foreground(t.FgMute)
	HostNameStyle = lipgloss.NewStyle().Foreground(t.Yellow).Bold(true)
	HostDetailStyle = lipgloss.NewStyle().Foreground(t.FgMute)
	TagStyle = lipgloss.NewStyle().Foreground(t.Green)
	TitleStyle = AppTitleStyle
	SectionStyle = lipgloss.NewStyle().Foreground(t.Orange).Bold(true)
	BorderStyle = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(t.Border).Padding(1, 2)

	// Pane styles
	StylePaneActive = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(t.Green).Padding(0, 1)
	StylePaneInactive = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(t.Border).Padding(0, 1)

	// Host card styles
	HostCardStyle = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(t.Border).Padding(0, 1)
	HostCardActiveStyle = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(t.Green).Padding(0, 1)
}