podman

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//go:build darwin
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package main
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import (
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	"errors"
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	"fmt"
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	"io/fs"
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	"os"
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	"os/exec"
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	"path/filepath"
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	"github.com/containers/storage/pkg/fileutils"
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	"github.com/spf13/cobra"
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)
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var uninstallCmd = &cobra.Command{
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	Use:    "uninstall",
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	Short:  "Uninstall the podman helper agent",
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	Long:   "Uninstall the podman helper agent, which manages the /var/run/docker.sock link",
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	PreRun: silentUsage,
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	RunE:   uninstall,
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}
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func init() {
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	addPrefixFlag(uninstallCmd)
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	rootCmd.AddCommand(uninstallCmd)
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}
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func uninstall(cmd *cobra.Command, args []string) error {
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	userName, _, homeDir, err := getUser()
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	if err != nil {
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		return err
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	}
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	labelName := fmt.Sprintf("com.github.containers.podman.helper-%s", userName)
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	fileName := filepath.Join("/Library", "LaunchDaemons", labelName+".plist")
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	if err = runDetectErr("launchctl", "unload", fileName); err != nil {
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		// Try removing the service by label in case the service is half uninstalled
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		if rerr := runDetectErr("launchctl", "remove", labelName); rerr != nil {
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			// Exit code 3 = no service to remove
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			if exitErr, ok := rerr.(*exec.ExitError); !ok || exitErr.ExitCode() != 3 {
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				fmt.Fprintf(os.Stderr, "Warning: service unloading failed: %s\n", err.Error())
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				fmt.Fprintf(os.Stderr, "Warning: remove also failed: %s\n", rerr.Error())
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			}
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		}
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	}
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	if err := os.Remove(fileName); err != nil {
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		if !os.IsNotExist(err) {
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			return fmt.Errorf("could not remove plist file: %s", fileName)
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		}
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	}
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	helperPath := filepath.Join(installPrefix, "podman", "helper", userName)
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	if err := os.RemoveAll(helperPath); err != nil {
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		return fmt.Errorf("could not remove helper binary path: %s", helperPath)
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	}
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	// Get the file information of dockerSock
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	if err := fileutils.Lexists(dockerSock); err != nil {
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		// If the error is due to the file not existing, return nil
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		if errors.Is(err, fs.ErrNotExist) {
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			return nil
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		}
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		// Return an error if unable to get the file information
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		return fmt.Errorf("could not stat dockerSock: %v", err)
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	}
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	if target, err := os.Readlink(dockerSock); err != nil {
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		// Return an error if unable to read the symlink
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		return fmt.Errorf("could not read dockerSock symlink: %v", err)
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	} else {
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		// Check if the target of the symlink matches the expected target
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		expectedTarget := filepath.Join(homeDir, ".local", "share", "containers", "podman", "machine", "podman.sock")
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		if target != expectedTarget {
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			// If the targets do not match, print the information and return with nothing left to do
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			fmt.Printf("dockerSock does not point to the expected target: %v\n", target)
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			return nil
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		}
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		// Attempt to remove dockerSock
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		if err := os.Remove(dockerSock); err != nil {
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			if !errors.Is(err, fs.ErrNotExist) {
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				return fmt.Errorf("could not remove dockerSock file: %s", err)
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			}
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		}
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	}
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	return nil
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}
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