Building an App for Removing Multiple Slack's Files

You're a developer. What do you do in your spare time? One of my most excited task for sharpening my skills is starting build a pet project.

Motivation

Slack is cool! It's free. It supports for team collaboration very well.

However, my team only has storage limits due to a free account. We got a warning message as below:

Your file was uploaded — it’s safe and sound in Slack. Unfortunately your team doesn’t have any storage space left. To get more space, you can upgrade to a paid account or delete some of your older files.

Since my team plan of upgrading to a paid account is still up in the air, I intended to go with "deleting some of our older files" first. (But we will, Slack. You are great!)

Play Around

I got started by googling keyword "remove slack files". Here it is:
https://get.slack.help/hc/en-us/articles/218159688-Delete-shared-files

Uh huh! But I only could delete one file at a time.

We're afraid it's not possible to bulk delete files. We know that your business data is important to you — that's why we offer API methods to help you manage them.

How about removing the multiple files? Yeah! Slack is very cool again. They provide an API that I am able to bulk delete files:
https://api.slack.com/methods#files

Accordingly, I'm able to firstly call method "files.list" to obtain all files then I just need to loop the list to remove each file with method "file.delete".

Taking a look to the Slack API, I saw what I need to prepare is a "token" for building a very simple application.

In order to obtain a token, I just need to follow the following article. ;)

https://get.slack.help/hc/en-us/articles/215770388-Create-and-regenerate-API-tokens

Let's go! I have made a test method "files.list" with Postman. Woo hoo! It worked.

Get Down To It

Now, I easily could build a REST client app to achieve this goal. With Java, I used Jersey as REST client API. The following are my steps:

Setup environment: Eclipse, Git, JDK, Maven, Tomcat.
Build a JSF Maven-based app and run on Tomcat 8
Write a service to call the methods needed "files.list" and "files.delete"
Refactor and put to Github. ;)

This is just my first draft, I'm still on my way to improve it. Anybody who wants to join me, you're are very welcome. ;)

The source code is here: https://github.com/vnnvanhuong/slack_bulk_files_remover

Comments

Junit - Test fails on French or German string assertion

In my previous post about building a regex to check a text without special characters but allow German and French . I met a problem that the unit test works fine on my machine using Eclipse, but it was fail when running on Jenkins' build job. Here is my test: @Test public void shouldAllowFrenchAndGermanCharacters(){ String source = "ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ"; assertFalse(SpecialCharactersUtils.isExistSpecialCharater(source)); } Production code: public static boolean isExistNotAllowedCharacters(String source){ Pattern regex = Pattern.compile("^[a-zA-Z_0-9_ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ]*$"); Matcher matcher = regex.matcher(source); return !matcher.matches(); } The result likes the following: Failed tests: SpecialCharactersUtilsTest.shouldAllowFrenchAndGermanCharacters:32 null A guy from stackoverflow.com says: "This is probably due to the default encoding used for your Java source files. The ö in the string literal in the J...

Git Feature Branch Workflow

Motivator It's important for a team to have an agreement on how the changes of source code should be applied. According to projects and teams size, we will define a workflow or select one from recommended workflows ; the "Feature Branch Workflow" is a candidate. What is it? - One branch "master" for main codebase - Several separated branches for features development Why should we care? - Be super simple and allow each developer works on a particular feature. - A stable codebase (master) benefits for continuous integration (CI) environment - Leverage "Pull request" for Code review How it works? A lifecyle of a feature branch (usually created by a story) 1. Creator creates a new branch from a story. For example: "ABC-1-setup-projects" 2. Creator checkouts the created branch and works on the branch (commits, pushes) 3. Creator has done the feature, he uses "pull request" to merge his branch into branch "master...

Managing JAR files with Apache Maven

Apache Maven (Maven) is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information. Why Maven? Let’s learn about the Maven’s history here https://maven.apache.org/background/history-of-maven.html to understand why Maven is created. There are a lot of useful things that we should use Maven. In my opinion, the most important thing is that Maven solves the problems with managing jar files. It centralizes these files in one place and it is easy to use by declaring dependencies in a xml file (pom.xml). Using Maven to manage JAR files Firstly, I would like to give you an example about using some JAR files without Maven. In my project, I need some JAR files such as SNMP4J.jar, jta26.jar, jgraphx.jar, etc… so I had to search them on the Internet with visiting a lot of websites, download and add these files into my proje...

Selenium - Override javascript functions to ignore downloading process

I have got an issue with downloading process on IE 8. This browser blocks my automatic-download functionality on my app so that I could not work with my test case any more after that. In my case, I didn't care about the file is downloaded or not, I just focus on the result after downloading process finished successfully. Therefore, I found a solution to ignore this process so that I can work normally. I use Primefaces, here is the remote command to trigger the download process <p:remoteCommand name="cmdGenerateDocument" actionListener="#{logic.onGenerateDocument}" update="xrflDocumentCreationPanel" oncomplete="clickDownloadButton();"/> The following is my test case: @Test public void shouldUpdateStep6ToWarningIfStep1IsValidAfterFinished(){ MainPage mainPage = new MainPage(); waitForLoading(mainPage.getDriver()); EmployeeDetailPage empDetailPage = new EmployeeDetailPage(); waitForLoading(empDetailPage.getDriver()); e...

My must-have apps for daily work

There is no doubt that cool apps can help us be more productive and enjoyable at work. For the time being, I really love the following apps which are used by me almost every day. 1. A personal Kanban In fact, a personal kanban is the most useful app for me. Why does it matter? It is not just a to-do list, but it keeps me motivated every day because it helps me be able to know what my "big picture" is. I usually set up my plans together with a path to reach them. KanbanFlow is my preferred tool. KanbanFlow 2. A terminal Needless to say, a terminal is a must-have app for every developer, especially the ones use macOS/Linux. Due to its importance, I love to decorate and enhance it to be super exciting with various tools such as iTerm , oh-my- zsh , and thefuck . ;) iTerm + oh-my-zsh 3. A documentation "ecosystem" As a developer, I can not remember all things that I have experimented a day. Moreover, a document is really useful for sharing an...

vhandit

Search This Blog