Implement Project Deletion Functionality

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Introduction

In this article, we will explore the implementation of a project deletion functionality in a command-line interface (CLI) application. The goal is to provide a safe and efficient way to delete existing project directories. We will cover the tasks, acceptance criteria, and implementation notes required to achieve this functionality.

Description

The project deletion functionality will allow users to safely delete existing project directories using the go delete [project_name] command. This command will prompt the user for confirmation before deletion to prevent accidental deletion of important files. Additionally, safeguards will be implemented to prevent deleting non-project directories.

Tasks

1. Implement the go delete [project_name] command

The first task is to implement the go delete [project_name] command. This command will be responsible for deleting the specified project directory. To achieve this, we will use the following steps:

  • Parse the command-line arguments to extract the project name.
  • Validate the project name to ensure it exists in the projects directory.
  • Delete the project directory using the os package.

2. Add confirmation prompt before deletion

To prevent accidental deletion of important files, we will add a confirmation prompt before deletion. This prompt will ask the user to confirm whether they want to delete the project directory. If the user confirms, the project directory will be deleted. If the user cancels, the deletion will be aborted.

3. Include safeguards to prevent deleting non-project directories

To prevent deleting non-project directories, we will implement safeguards to ensure that only project directories are deleted. We will achieve this by validating the project name to ensure it exists in the projects directory.

4. Add option for force deletion without confirmation

To provide an option for scripting, we will add a force deletion option that allows users to delete the project directory without confirmation. This option will be useful for automating the deletion process.

5. Provide clear feedback on successful deletion

To provide clear feedback on successful deletion, we will display a success message indicating that the project directory has been deleted.

Acceptance Criteria

1. User can safely delete project directories

The user should be able to safely delete project directories using the go delete [project_name] command.

2. Confirmation is required before deletion

A confirmation prompt should be displayed before deletion to prevent accidental deletion of important files.

3. Appropriate error messages for non-existent projects

Appropriate error messages should be displayed when attempting to delete a non-existent project.

4. Force option is available for scripting

A force deletion option should be available for scripting to allow users to delete the project directory without confirmation.

5. Clear success and error messages are displayed

Clear success and error messages should be displayed to provide feedback on the deletion process.

Implementation Notes

1. Consider adding a trash/archive option instead of permanent deletion

Instead of permanently deleting project directories, we could consider adding a trash/archive option that allows users to move the project directory to a trash or archive folder.

2. Add validation to ensure we're only deleting projects in the projects directory

We should add validation to ensure that we're only deleting projects in the projects directory to prevent deleting non-project directories.

3. Consider adding a "dry run" option to show what would be deleted

We could consider adding a "dry run" option that shows what would be deleted without actually deleting the project directory.

4. Handle permission errors gracefully

We should handle permission errors gracefully to prevent the application from crashing when attempting to delete a project directory with insufficient permissions.

5. Add warning if project contains uncommitted git changes

We should add a warning if the project contains uncommitted git changes to prevent accidental deletion of uncommitted changes.

Example Code

Here is an example code snippet that demonstrates the implementation of the go delete [project_name] command:

package main

import (
	"fmt"
	"os"
	"path/filepath"
)

func deleteProject(projectName string) error {
	// Validate the project name to ensure it exists in the projects directory
	if !filepath.Exists(filepath.Join("projects", projectName)) {
		return fmt.Errorf("project %s does not exist", projectName)
	}

	// Prompt the user for confirmation before deletion
	if !confirmDeletion() {
		return nil
	}

	// Delete the project directory
	if err := os.RemoveAll(filepath.Join("projects", projectName)); err != nil {
		return err
	}

	// Display a success message indicating that the project directory has been deleted
	fmt.Println("Project directory deleted successfully")

	return nil
}

func confirmDeletion() bool {
	// Prompt the user for confirmation before deletion
	fmt.Printf("Are you sure you want to delete project %s? (y/n): ", projectName)
	var response string
	fmt.Scanln(&response)

	// Return true if the user confirms, false otherwise
	return response == "y"
}

Introduction

In our previous article, we explored the implementation of a project deletion functionality in a command-line interface (CLI) application. In this article, we will answer some frequently asked questions (FAQs) related to the project deletion functionality.

Q: What is the purpose of the project deletion functionality?

A: The purpose of the project deletion functionality is to provide a safe and efficient way to delete existing project directories. This functionality allows users to safely delete project directories using the go delete [project_name] command.

Q: How does the project deletion functionality work?

A: The project deletion functionality works by parsing the command-line arguments to extract the project name, validating the project name to ensure it exists in the projects directory, and deleting the project directory using the os package.

Q: What safeguards are in place to prevent deleting non-project directories?

A: To prevent deleting non-project directories, we have implemented safeguards to ensure that only project directories are deleted. We achieve this by validating the project name to ensure it exists in the projects directory.

Q: What is the purpose of the confirmation prompt before deletion?

A: The confirmation prompt before deletion is to prevent accidental deletion of important files. This prompt asks the user to confirm whether they want to delete the project directory.

Q: What is the purpose of the force deletion option?

A: The force deletion option is to provide an option for scripting. This option allows users to delete the project directory without confirmation, which is useful for automating the deletion process.

Q: What happens if the project directory contains uncommitted git changes?

A: If the project directory contains uncommitted git changes, a warning will be displayed to prevent accidental deletion of uncommitted changes.

Q: How can I add a trash/archive option instead of permanent deletion?

A: To add a trash/archive option, you can modify the deleteProject function to move the project directory to a trash or archive folder instead of permanently deleting it.

Q: How can I add a "dry run" option to show what would be deleted?

A: To add a "dry run" option, you can modify the deleteProject function to simulate the deletion process without actually deleting the project directory.

Q: How can I handle permission errors gracefully?

A: To handle permission errors gracefully, you can modify the deleteProject function to catch permission errors and display an error message to the user.

Q: What are some best practices for implementing the project deletion functionality?

A: Some best practices for implementing the project deletion functionality include:

  • Validating the project name to ensure it exists in the projects directory
  • Prompting the user for confirmation before deletion
  • Providing a force deletion option for scripting
  • Displaying a warning if the project directory contains uncommitted git changes
  • Handling permission errors gracefully

Conclusion

In this article, we have answered some frequently asked questions (FAQs) related to the project deletion functionality. We hope this article has provided valuable insights into the implementation of the project deletion functionality and has helped you to better understand the purpose and functionality of this feature.