Change style package, new components, ...

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

style/theme.go

@@ -0,0 +1,84 @@
+package style
+
+import (
+	_ "embed"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"gopkg.in/yaml.v3"
+)
+
+//go:embed default.yaml
+var DefaultConfig []byte
+
+var S Styles
+
+func init() {
+	path := DefaultConfigPath()
+	if data, err := os.ReadFile(path); err == nil {
+		if s, err := stylesFromBytes(data); err == nil {
+			S = s
+			return
+		}
+	}
+
+	s, _ := stylesFromBytes(DefaultConfig)
+	S = s
+}
+
+func Init() error {
+	path := DefaultConfigPath()
+	data, err := os.ReadFile(path)
+	if err != nil {
+		s, e := stylesFromBytes(DefaultConfig)
+		if e != nil {
+			return e
+		}
+		S = s
+		return nil
+	}
+	return InitFromBytes(data)
+}
+
+func InitFrom(path string) error {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return fmt.Errorf("style: read config: %w", err)
+	}
+	return InitFromBytes(data)
+}
+
+func InitFromBytes(data []byte) error {
+	s, err := stylesFromBytes(data)
+	if err != nil {
+		return err
+	}
+	S = s
+	return nil
+}
+
+func DefaultConfigPath() string {
+	return filepath.Join(configDir(), "ilovetui", "config.yaml")
+}
+
+func stylesFromBytes(data []byte) (Styles, error) {
+	var base configYAML
+	if err := yaml.Unmarshal(DefaultConfig, &base); err != nil {
+		return Styles{}, fmt.Errorf("style: parse default config: %w", err)
+	}
+	var user configYAML
+	if err := yaml.Unmarshal(data, &user); err != nil {
+		return Styles{}, fmt.Errorf("style: parse config: %w", err)
+	}
+	merged := mergeConfig(base, user)
+	return newStyles(merged.Colors, merged.NerdFonts, merged.Border), nil
+}
+
+func configDir() string {
+	if dir := os.Getenv("XDG_CONFIG_HOME"); dir != "" {
+		return dir
+	}
+	home, _ := os.UserHomeDir()
+	return filepath.Join(home, ".config")
+}