detector_env.go RawHistoryFolder

1package colorscheme
2
3import (
4	"os"
5	"strings"
6)
7
8const (
9	detectorNameEnv = "GTK_THEME"
10	priorityEnv     = 20
11)
12
13// EnvDetector detects color scheme from GTK_THEME environment variable.
14// This is useful when users explicitly set their theme via environment.
15type EnvDetector struct{}
16
17// NewEnvDetector creates a new environment variable-based detector.
18func NewEnvDetector() *EnvDetector {
19	return &EnvDetector{}
20}
21
22// Name implements port.ColorSchemeDetector.
23func (*EnvDetector) Name() string {
24	return detectorNameEnv
25}
26
27// Priority implements port.ColorSchemeDetector.
28func (*EnvDetector) Priority() int {
29	return priorityEnv
30}
31
32// Available implements port.ColorSchemeDetector.
33// Returns true if GTK_THEME environment variable is set.
34func (*EnvDetector) Available() bool {
35	return os.Getenv("GTK_THEME") != ""
36}
37
38// Detect implements port.ColorSchemeDetector.
39// Checks if GTK_THEME contains "dark" (case-insensitive).
40func (*EnvDetector) Detect() (prefersDark, ok bool) {
41	gtkTheme := os.Getenv("GTK_THEME")
42	if gtkTheme == "" {
43		return false, false
44	}
45
46	// If GTK_THEME contains "dark", prefer dark mode
47	// Otherwise, assume light mode
48	prefersDark = strings.Contains(strings.ToLower(gtkTheme), "dark")
49	return prefersDark, true
50}