refactor package count logic again (more clean code(по заветам melvi))

src/providers/packages.go

@@ -11,116 +11,28 @@ func pathExists(path string) bool {
 	return err == nil
 }
 
-func getNixOS() string {
-	if pathExists("/nix/store") {
-		pkgs, err := os.ReadDir("/nix/store")
+func getPmPackages(packagerName string, packagerPath string) string {
+	if pathExists(packagerPath) {
+		pkgs, err := os.ReadDir(packagerPath)
 		if err != nil {
-			return "error reading /nix/store"
+			return "error reading " + packagerPath
 		}
-		return strconv.Itoa(len(pkgs)) + " (nix)"
-	}
-	return ""
-}
-
-func getPacman() string {
-	if pathExists("/var/lib/pacman/local") {
-		pkgs, err := os.ReadDir("/var/lib/pacman/local")
-		if err != nil {
-			return "error reading /var/lib/pacman/local"
-		}
-		return strconv.Itoa(len(pkgs)-1) + " (pacman)"
-	}
-	return ""
-}
-
-func getApt() string {
-	if pathExists("/var/lib/apt") {
-		pkgs, err := os.ReadDir("/var/lib/apt")
-		if err != nil {
-			return "error reading /var/lib/apt"
-		}
-		return strconv.Itoa(len(pkgs)) + " (apt)"
-	}
-	return ""
-}
-
-func getDnf() string {
-	if pathExists("/var/lib/dnf") {
-		pkgs, err := os.ReadDir("/var/lib/dnf")
-		if err != nil {
-			return "error reading /var/lib/dnf"
-		}
-		return strconv.Itoa(len(pkgs)) + " (dnf)"
-	}
-	return ""
-}
-
-func getFlatpak() string {
-	if pathExists("/usr/bin/flatpak") {
-		pkgs, err := os.ReadDir("/var/lib/flatpak")
-		if err != nil {
-			return "error reading /var/lib/flatpak"
-		}
-		return strconv.Itoa(len(pkgs)) + " (flatpak)"
-	}
-	return ""
-}
-
-func getZypper() string {
-	if pathExists("/var/lib/zypp") {
-		pkgs, err := os.ReadDir("/var/lib/zypp")
-		if err != nil {
-			return "error reading /var/lib/zypp"
-		}
-		return strconv.Itoa(len(pkgs)) + " (zypper)"
-	}
-	return ""
-}
-
-func getXbps() string {
-	if pathExists("/var/db/xbps") {
-		pkgs, err := os.ReadDir("/var/db/xbps")
-		if err != nil {
-			return "error reading /var/db/xbps"
-		}
-		return strconv.Itoa(len(pkgs)) + " (xbps)"
-	}
-	return ""
-}
-
-func getPortage() string {
-	if pathExists("/var/lib/portage") {
-		pkgs, err := os.ReadDir("/var/lib/portage")
-		if err != nil {
-			return "error reading /var/lib/portage"
-		}
-		return strconv.Itoa(len(pkgs)) + " (emerge)"
-	}
-	return ""
-}
-
-func getNix() string {
-	if pathExists("~/.nix-profile") {
-		pkgs, err := os.ReadDir("~/.nix-profile/lib/nix/profiles/per-user")
-		if err != nil {
-			return "error reading ~/.nix-profile/lib/nix/profiles/per-user"
-		}
-		return strconv.Itoa(len(pkgs)) + " (nix)"
+		return strconv.Itoa(len(pkgs)) + " (" + packagerName + ")"
 	}
 	return ""
 }
 
 func GetPkgs() string {
 	rawPkgs := []string{
-		getPacman(),
-		getNixOS(),
-		getNix(),
-		getXbps(),
-		getDnf(),
-		getZypper(),
-		getApt(),
-		getPortage(),
-		getFlatpak(),
+		getPmPackages("pacman", "/var/lib/pacman/local"),
+		getPmPackages("apt", "/var/lib/apt"),
+		getPmPackages("dnf", "/var/lib/dnf"),
+		getPmPackages("flatpak", "/var/lib/flatpak"),
+		getPmPackages("zypper", "/var/lib/zypp"),
+		getPmPackages("xbps", "/var/db/xbps"),
+		getPmPackages("emerge", "/var/lib/portage"),
+		getPmPackages("nix-user", "~/.nix-profile/lib/nix/profiles/per-user"),
+		getPmPackages("nix", "/nix/store"),
 	}
 	var pkgsList []string
 	for _, p := range rawPkgs {