feat: initial project commit

commit to push first working snapshot to codeberg

internal/os/osinfo.go

@@ -0,0 +1,83 @@
+package os
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+type OS struct {
+	ID             string
+	Name           string
+	Version        string
+	PackageManager string
+}
+
+func GetLinuxDistribution() (*OS, error) {
+	_, err := os.Stat("/etc/os-release")
+	if os.IsNotExist(err) {
+		return nil, fmt.Errorf("unable to read system information")
+	}
+
+	osRelease, _ := os.ReadFile("/etc/os-release")
+	return parseOsRelease(string(osRelease)), nil
+}
+
+func parseOsRelease(osRelease string) *OS {
+	var result OS
+	result.ID = "Unknown"
+	result.Name = "Unknown"
+	result.Version = "Unknown"
+
+	lines := strings.Split(osRelease, "\n")
+
+	for _, line := range lines {
+		splitLine := strings.SplitN(line, "=", 2)
+		if len(splitLine) != 2 {
+			continue
+		}
+		switch splitLine[0] {
+		case "ID":
+			result.ID = strings.ToLower(strings.Trim(splitLine[1], "\""))
+		case "NAME":
+			result.Name = strings.Trim(splitLine[1], "\"")
+		case "VERSION_ID":
+			result.Version = strings.Trim(splitLine[1], "\"")
+		}
+	}
+	err := result.getPackageManager()
+	if err != nil {
+		log.Fatal(err)
+	}
+	return &result
+}
+
+func (os *OS) getPackageManager() error {
+	switch os.ID {
+	case "debian", "ubuntu", "linuxmint":
+		os.PackageManager = "apt"
+		return nil
+	case "arch":
+		os.PackageManager = "pacman"
+		return nil
+	case "fedora":
+		os.PackageManager = "dnf"
+		return nil
+	default:
+		pmcommands := []string{
+			"apt",
+			"dnf",
+			"pacman",
+		}
+		for _, pmname := range pmcommands {
+			_, err := exec.LookPath(pmname)
+			if err == nil {
+				os.PackageManager = pmname
+				return nil
+			}
+		}
+		return fmt.Errorf("no packagemanager found for os: %s", os.Name)
+	}
+}