core: add DL helper, apply to TrackArt OSD, DankLocationSearch

- unrelated change to add gsettingsOrDconf helpers

core/cmd/dms/commands_common.go

@@ -524,5 +524,6 @@ func getCommonCommands() []*cobra.Command {
 		chromaCmd,
 		doctorCmd,
 		configCmd,
+		dlCmd,
 	}
 }

core/cmd/dms/commands_download.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+var dlOutput string
+var dlUserAgent string
+var dlTimeout int
+var dlIPv4Only bool
+
+var dlCmd = &cobra.Command{
+	Use:   "dl <url>",
+	Short: "Download a URL to stdout or file",
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		if err := runDownload(args[0]); err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+	},
+}
+
+func init() {
+	dlCmd.Flags().StringVarP(&dlOutput, "output", "o", "", "Output file path (default: stdout)")
+	dlCmd.Flags().StringVar(&dlUserAgent, "user-agent", "", "Custom User-Agent header")
+	dlCmd.Flags().IntVar(&dlTimeout, "timeout", 10, "Request timeout in seconds")
+	dlCmd.Flags().BoolVarP(&dlIPv4Only, "ipv4", "4", false, "Force IPv4 only")
+}
+
+func runDownload(url string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(dlTimeout)*time.Second)
+	defer cancel()
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return fmt.Errorf("invalid request: %w", err)
+	}
+
+	switch {
+	case dlUserAgent != "":
+		req.Header.Set("User-Agent", dlUserAgent)
+	default:
+		req.Header.Set("User-Agent", "DankMaterialShell/1.0 (Linux)")
+	}
+
+	dialer := &net.Dialer{Timeout: 5 * time.Second}
+	transport := &http.Transport{DialContext: dialer.DialContext}
+	if dlIPv4Only {
+		transport.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
+			return dialer.DialContext(ctx, "tcp4", addr)
+		}
+	}
+	client := &http.Client{Transport: transport}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("download failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+
+	if dlOutput == "" {
+		_, err = io.Copy(os.Stdout, resp.Body)
+		return err
+	}
+
+	if dir := filepath.Dir(dlOutput); dir != "." {
+		if err := os.MkdirAll(dir, 0755); err != nil {
+			return fmt.Errorf("mkdir failed: %w", err)
+		}
+	}
+
+	f, err := os.Create(dlOutput)
+	if err != nil {
+		return fmt.Errorf("create failed: %w", err)
+	}
+	defer f.Close()
+
+	if _, err := io.Copy(f, resp.Body); err != nil {
+		os.Remove(dlOutput)
+		return fmt.Errorf("write failed: %w", err)
+	}
+
+	fmt.Println(dlOutput)
+	return nil
+}

core/internal/matugen/matugen.go

@@ -652,16 +652,20 @@ func isDMSGTKActive(configDir string) bool {
 }
 
 func refreshGTK(mode ColorMode) {
-	exec.Command("gsettings", "set", "org.gnome.desktop.interface", "gtk-theme", "").Run()
-	exec.Command("gsettings", "set", "org.gnome.desktop.interface", "gtk-theme", mode.GTKTheme()).Run()
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "gtk-theme", ""); err != nil {
+		log.Warnf("Failed to reset gtk-theme: %v", err)
+	}
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "gtk-theme", mode.GTKTheme()); err != nil {
+		log.Warnf("Failed to set gtk-theme: %v", err)
+	}
 }
 
 func refreshGTK4() {
-	output, err := exec.Command("gsettings", "get", "org.gnome.desktop.interface", "color-scheme").Output()
+	output, err := utils.GsettingsGet("org.gnome.desktop.interface", "color-scheme")
 	if err != nil {
 		return
 	}
-	current := strings.Trim(strings.TrimSpace(string(output)), "'")
+	current := strings.Trim(output, "'")
 
 	var toggle string
 	if current == "prefer-dark" {
@@ -670,17 +674,22 @@ func refreshGTK4() {
 		toggle = "prefer-dark"
 	}
 
-	if err := exec.Command("gsettings", "set", "org.gnome.desktop.interface", "color-scheme", toggle).Run(); err != nil {
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "color-scheme", toggle); err != nil {
+		log.Warnf("Failed to toggle color-scheme for GTK4 refresh: %v", err)
 		return
 	}
 	time.Sleep(50 * time.Millisecond)
-	exec.Command("gsettings", "set", "org.gnome.desktop.interface", "color-scheme", current).Run()
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "color-scheme", current); err != nil {
+		log.Warnf("Failed to restore color-scheme for GTK4 refresh: %v", err)
+	}
 }
 
 func refreshQt6ct() {
 	confPath := filepath.Join(utils.XDGConfigHome(), "qt6ct", "qt6ct.conf")
 	now := time.Now()
-	_ = os.Chtimes(confPath, now, now)
+	if err := os.Chtimes(confPath, now, now); err != nil {
+		log.Warnf("Failed to touch qt6ct.conf: %v", err)
+	}
 }
 
 func signalTerminals() {
@@ -716,8 +725,8 @@ func syncColorScheme(mode ColorMode) {
 		scheme = "default"
 	}
 
-	if err := exec.Command("gsettings", "set", "org.gnome.desktop.interface", "color-scheme", scheme).Run(); err != nil {
-		exec.Command("dconf", "write", "/org/gnome/desktop/interface/color-scheme", "'"+scheme+"'").Run()
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "color-scheme", scheme); err != nil {
+		log.Warnf("Failed to sync color-scheme: %v", err)
 	}
 }
 
@@ -767,7 +776,9 @@ func closestAdwaitaAccent(primaryHex string) string {
 func syncAccentColor(primaryHex string) {
 	accent := closestAdwaitaAccent(primaryHex)
 	log.Infof("Setting GNOME accent color: %s", accent)
-	exec.Command("gsettings", "set", "org.gnome.desktop.interface", "accent-color", accent).Run()
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "accent-color", accent); err != nil {
+		log.Warnf("Failed to set accent-color: %v", err)
+	}
 }
 
 type TemplateCheck struct {

core/internal/screenshot/theme.go

@@ -3,11 +3,11 @@ package screenshot
 import (
 	"encoding/json"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"strings"
 
 	"github.com/AvengeMedia/DankMaterialShell/core/internal/log"
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/utils"
 )
 
 type ThemeColors struct {
@@ -83,12 +83,11 @@ func getColorsFilePath() string {
 }
 
 func isLightMode() bool {
-	out, err := exec.Command("gsettings", "get", "org.gnome.desktop.interface", "color-scheme").Output()
+	scheme, err := utils.GsettingsGet("org.gnome.desktop.interface", "color-scheme")
 	if err != nil {
 		return false
 	}
 
-	scheme := strings.TrimSpace(string(out))
 	switch scheme {
 	case "'prefer-light'", "'default'":
 		return true

core/internal/server/freedesktop/actions.go

@@ -1,11 +1,9 @@
 package freedesktop
 
 import (
-	"context"
 	"fmt"
-	"os/exec"
-	"time"
 
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/utils"
 	"github.com/godbus/dbus/v5"
 )
 
@@ -107,22 +105,8 @@ func (m *Manager) GetUserIconFile(username string) (string, error) {
 }
 
 func (m *Manager) SetIconTheme(iconTheme string) error {
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-
-	check := exec.CommandContext(ctx, "gsettings", "writable", "org.gnome.desktop.interface", "icon-theme")
-	if err := check.Run(); err == nil {
-		cmd := exec.CommandContext(ctx, "gsettings", "set", "org.gnome.desktop.interface", "icon-theme", iconTheme)
-		if err := cmd.Run(); err != nil {
-			return fmt.Errorf("gsettings set failed: %w", err)
-		}
-		return nil
+	if err := utils.GsettingsSet("org.gnome.desktop.interface", "icon-theme", iconTheme); err != nil {
+		return fmt.Errorf("failed to set icon theme: %w", err)
 	}
-
-	checkDconf := exec.CommandContext(ctx, "dconf", "write", "/org/gnome/desktop/interface/icon-theme", fmt.Sprintf("'%s'", iconTheme))
-	if err := checkDconf.Run(); err != nil {
-		return fmt.Errorf("both gsettings and dconf unavailable or failed: %w", err)
-	}
-
 	return nil
 }

core/internal/utils/gsettings.go

@@ -0,0 +1,31 @@
+package utils
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+func dconfPath(schema, key string) string {
+	return "/" + strings.ReplaceAll(schema, ".", "/") + "/" + key
+}
+
+// GsettingsGet reads a gsettings value, falling back to dconf read.
+func GsettingsGet(schema, key string) (string, error) {
+	if out, err := exec.Command("gsettings", "get", schema, key).Output(); err == nil {
+		return strings.TrimSpace(string(out)), nil
+	}
+	out, err := exec.Command("dconf", "read", dconfPath(schema, key)).Output()
+	if err != nil {
+		return "", fmt.Errorf("gsettings/dconf get failed for %s %s: %w", schema, key, err)
+	}
+	return strings.TrimSpace(string(out)), nil
+}
+
+// GsettingsSet writes a gsettings value, falling back to dconf write.
+func GsettingsSet(schema, key, value string) error {
+	if err := exec.Command("gsettings", "set", schema, key, value).Run(); err == nil {
+		return nil
+	}
+	return exec.Command("dconf", "write", dconfPath(schema, key), "'"+value+"'").Run()
+}