Google Code-in/2015

Wikimedia has been accepted for Google Code-in 2015.

Google Code-in is a contest to introduce pre-university students (ages 13-17) to the many kinds of contributions that make free and open source software (FOSS) development possible. Students must complete tasks, one at a time. It is sponsored and run by Google. The Wikimedia Foundation has participated since 2013.

The Google Code-in 2015 contest runs from December 07, 2015 to January 27, 2016 (see the full timeline).

Instructions for GCI students
These instructions are common to all the GCI tasks. Each category of tasks has further instructions. There is also general information available by Google.

General recommendations
If you choose to work on a bug report that requires writing or changing code, you want to take a look at these pages first:


 * Coding conventions and any subpages relevant to your task (PHP, JavaScript, Python, …)
 * Following the Commit message guidelines, especially the Example section at the bottom, will automatically add a notification about your patch to the corresponding report in Phabricator. Hence there is no need anymore to add a "Please review" comment in the report.
 * Check your code against the pre-commit checklist. Don't skip this step ; you'll be happy you didn't.
 * Getting code reviews. Find and add people as potential reviewers of your patch.
 * Amending a change. Don't create a new Gerrit changeset to fix your previous one!
 * In most cases when working with MediaWiki, you do not want to hack MediaWiki core unless you really know what you're doing.

Feedback, questions and support

 * You are expected to do some basic research yourself first: Look at the code, try to get some understanding what it is supposed to do, and try to find the probable place(s) where you need to make changes in order to fix the bug.
 * Each GCI task specifies a public community channel for related questions and comments that might be more efficient than the Google Code-in site. Identifying yourself as a GCI student may help you getting more/faster help from other contributors in addition to your mentor(s).
 * Sometimes the channel is a bug report (also called "task"). See Phabricator (except for Kiwix tasks which use Sourceforge instead). In the upper part of a bug report you can see the project that the problem is located in. This provides you a hint about the Git repository that the code is located in, and about the development team which you could contact if you want to discuss it in a "broader" way (as comments in bug reports should refer to the specific problem described in the report only).
 * Sometimes the channel is a wiki discussion page. See Help:Talk pages.
 * If you have general questions about infrastructure, the software architecture or workflows which are not tied to the specific bug that you want to work on, use generic channels like IRC, mailing lists, or wiki discussion pages. For example, if you have a problem with Gerrit, the Gerrit discussion page could be a good place to ask.
 * If you have a specific question about the bug itself, comment in the corresponding Phabricator report. "What do I have to do to fix this bug?" is not a good question to start with: The more specific your questions are, the more likely somebody can answer them quickly. If you have no idea at all how to fix the bug, maybe that bug is not (yet) for you - please consider finding an easier one first.
 * When asking, elaborate what you have tried and found out already, so others can help at the right level. Try to be specific - for example, copy and paste your commands and their output (if not too long) instead of paraphrasing in your own words. This avoids misunderstandings.
 * Avoid private email or support requests in our social media channels.
 * Please be patient when seeking input and comments. On IRC, don't ask to ask, just ask: most questions can be answered by other community members too if you ask on an IRC channel. If nobody answers, please ask on the bug report or wiki page related to the problem; don't just drop the question.
 * Learn more at Communication.

Communicate that you work on a bug
You do not need to be set as the assignee in a bug report or announce your plans before you start working on a bug, but it is welcome. At the latest when you are close to creating a patch for the bug, it is good to announce in a comment that you are working on it. Your announcement also helps others to not work on the bug at the same time and duplicate work. Also note that if a bug report already has a recent link to a patch in Gerrit and has the project "Patch-For-Review" associated, you should choose a different bug to work on instead—avoid duplicating work.

If you stop working on a task you should remove yourself as the assignee of a bug report and reset the assignee to the default assignee, so others know that they can work on the bug report and don't expect you to still work on it.

By communicating early you will get more attention, feedback and help from community members.

Contacting Wikimedia mentors
Please be patient when seeking actions from mentors. Mentors are humans who eventually leave their laptops to sleep, work, study... Also they might be in different timezones than you. It could take your mentor(s) up to 36 hours to receive a review of the work that you have submitted. You should be reasonably patient and should not ask for a review of your work after only a few hours of waiting. Google Code-In is about the quality of your contributions and learning how FOSS development works, not about the number of tasks that you have worked on.

Mentors' corner
The following section is only interesting for mentors of GCI tasks.

First things first:


 * 1) Watch this page for more instructions, or ask for them.
 * 2) Be ready to learn with the rest of us along the way.  :)
 * 3) After November 13th, register as an official mentor on the Google Code-in site.
 * 4) After November 13th, create your tasks directly on the Google Code-in site (but preferably add general information to the Phabricator task so any helpful information will also be available to contributors outside of Google Code-in in case your task will not be worked on). Org admins are happy to help!
 * 5) After December 7th, be ready to mentor students, answer their questions, review their work (if you need more than 36 hours, let us know to help you).

Become a Wikimedia GCI mentor
Thank you for your interest in mentoring and helping young people to get into free and open source software!!

As long as the Google Code-in site is not available:
 * Read the Requirements of a task below.
 * In Wikimedia Phabricator, mark tasks that you would like to mentor: In the "Action" dropdown at the bottom of a task, choose "Associate projects" and enter "Google-Code-in-2015" in the "Projects" field, and add a comment "I will mentor this in #GCI2015".
 * Add yourself to the mentors table under Contacting Wikimedia mentors above.
 * After November 13th, Google Code-in site register as a mentor on the Google Code-in site. Org admins will receive a notification and will accept you. From that point you will be able to create tasks directly on the Google Code-in site and add other mentors.
 * Mentors can add tasks on the Google Code-in site at any time, also after GCI has started. Usually this is what happens when students are finishing tasks, they have already learned about a specific area, and they want more tasks related to it.

Requirements of a task
If there is common text that should be included in any of your tasks on the Google Code-in site, add it to the basic boilerplate section "Common instructions for tasks" below!


 * Tasks are supposed to take 2-3 hours to an experienced contributor. It is fine if the first task takes even 2-3 days to a student because they must understand many concepts and setup their environment first. And it is also ok if students specialize in a type of task, so every new task takes less time to complete until they are also able to complete them in a couple of hours.
 * Tasks are self-contained. Students must be able to complete it without much knowledge of the context, or the background.
 * Tasks should preferably have two mentors. Mentors are supposed to reply and review student contributions within 36 hours (keep in mind weekends and christmas holidays). Org admins are happy to help out but if you know that you will not be available in a certain timeframe, please reach out to co-workers if they could help review.
 * There are also "Beginner tasks". They are supposed to take less than 30 minutes to an experienced contributor.
 * To save time, "generic" tasks (e.g. "Fix 5 template data issues from the list shown in this link") are also very welcome which can easily be "cloned".

Some ideas for tasks:
 * Full list of "easy" tasks which could fit for GCI; list of "easy" tasks per area. Edit the task description and provide pointers to help the contributor!
 * A list of tasks which were already GCI candidates in 2014; 2014 ideas wikipage
 * A list of tasks which were already GCI ideas in 2013
 * Example tasks from previous years across organizations

Proposing tasks
As long as Google has not announced participating organizations and as long as the Google Code-in site is not available:

In Wikimedia Phabricator, (create and) mark tasks that you would like to mentor: In the "Action" dropdown at the bottom of a task, choose "Associate projects" and enter "Google-Code-in-2015" in the "Projects" field, and add a comment "I will mentor this in #GCI2015".

Template for tasks
Tasks on the Google Code-in site need to include the following information:
 * Task title. You might want to mention your project name in the title.
 * At least one category:
 * Code: Tasks related to writing or refactoring code.
 * Documentation/Training: Tasks related to creating/editing documents and helping others learn more. No translation tasks allowed.
 * Outreach/Research: Tasks related to community management, outreach/marketing, or studying problems and recommending solutions.
 * Quality Assurance: Tasks related to testing and ensuring code is of high quality.
 * User Interface: Tasks related to visuals, design or workflows in applications.


 * Detailed task description. This should contain full URL link to a corresponding Phabricator task and links to any information that could be helpful and to important resources. You should also add the below. Please do not use any wiki markup here but full URLs. Avoid misunderstandings and wrong expectations: Mention skills that could be helpful or are required for students so they can judge themselves. If you expect a patch in Gerrit from the student, say so. If you expect the main communication to happen in the Phabricator task or expect students to discuss a first iteration with you on IRC, say so by telling your IRC nickname(s) and channel. Note: You could add most of this information to the Phabricator task description instead (via "Edit Task"), so it will not get lost for future contributors if your GCI task does not get solved as part of GCI.
 * Hours (integer) to complete the task. Keep in mind students' real life. Be generous.
 * One or two mentor(s) available for this task. The mentor(s) must have agreed on mentoring and be registered on the Google Code-in site.
 * Tags: Any arbitrary keywords related to the task which can be searched for, e.g. the programming language.
 * Beginner task? Yes/No (for students who are just getting started - such introductory tasks should take less than 3 hours to complete and are less technical in nature, to help students learn how "things work"). Examples: Setting up the development environment and providing a screenshot of it, or triaging five bug reports in your area.

Workflow
When a student submits a task for review on the Google Code-in site, and you find it is not complete yet, you must change the status of the task to "Needs work". Then you can get back to the student with details to finish the task at Gerrit / Phabricator / wherever you have agreed. The first time you do this in the task you should also comment on the Google Code-in site where your feedback is located, just in case.

Common instructions for tasks
We want to use common texts in tasks wherever it makes sense to simplify the process of creating good task descriptions. Let's draft different levels of common texts: generic for all, specific to a category, specific to a type of task. When creating a task, use the levels that make sense. Let's link to on-wiki instructions and background as much as possible. This gives us freedom to improve content without having to edit multiple tasks.

For all tasks
The last sentence of each task description will automatically be (set in the organization's profile): "Students must read Wikimedia's general instructions at https://www.mediawiki.org/wiki/Google_Code-in_2015#Instructions_for_GCI_students first."

Citoid
citoid is a Node.js application (written in Javascript) that retrieves information about a webpage, book, journal article, etc. given a URL to the webpage or some other identifier, like DOI (digital object identifier). It uses another open source project, Zotero's translation-server, also written in Javascript, to do a lot of the work. Doing this work may involve reading both citoid and translation-server code. In order to get citoid working on your computer, you'll need to download both Node version 10.0 (for citoid) and xpcshell version 29.0 (for Zotero) to get both of them working. Citoid is a very new project so the code is rough around the edges and may change a lot- but that means there's lots of code to write! There are installation instructions and more information available at https://www.mediawiki.org/wiki/Citoid

Huggle
Huggle is a fast diff browser application intended for dealing with vandalism on Wikimedia projects, written in C++ (C++11 with Qt framework). More information: https://meta.wikimedia.org/wiki/Huggle and https://en.wikipedia.org/wiki/Wikipedia:Huggle.

Source code is available at https://github.com/huggle/huggle3-qt-lx and can be compiled on Linux, Windows and MacOS.

JavaScript gadgets
Wikipedia and other Wikimedia projects use gadgets written in JavaScript. See https://www.mediawiki.org/wiki/Gadget_kitchen for more information and potential task ideas.

Kiwix for Android


Kiwix is a Wikipedia offline reader. The Google Code-in tasks are related to the Android app. They require knowledge of the Java programming language and you also need a GNU/Linux distribution and basic knowledges about git.

To step in, follow these instructions:
 * 1) Install a GNU/Linux distribution, ideally Ubuntu (in a virtual machine like Virtualbox)
 * 2) Install development tools like git, autoconf, etc.
 * 3) Go to Sourceforge and create an account
 * 4) Click on the "Fork" button available here (you need to be logged)
 * 5) Clone your project using git clone on your local machine
 * 6) Follow the compilation instructions for Android

One time you think your code works and is good enough to be reviewed, do like following:
 * 1) Commit and push your code from the command line using git

Lua templates
MediaWiki templates are wiki pages to be included in other pages. Templates can take arguments, allowing editors to create special types of content like infoboxes, banners, and more. Originally, templates were written wikitext with parser functions, mimicking the functionality of a very basic programming language (but requiring advanced skills to get smart results out of them).

This problem has been solved allowing templates to rely in modules written with Lua, a proper programming language: https://www.mediawiki.org/wiki/Lua. Now we have many wikitext templates waiting to be rewritten in Lua. Take one and rewrite it! See also: https://en.wikipedia.org/wiki/Wikipedia:Lua/Help and https://en.wikipedia.org/wiki/Help:Lua_for_beginners.

Steps:
 * 1) Create a template at https://en.wikipedia.org/wiki/Template:XXXXXXXXXXX/sandbox.
 * 2) Create a module at https://en.wikipedia.org/wiki/Module:Sandbox/XXXXXXXXXXX.
 * 3) Report your progress soon and often at https://en.wikipedia.org/wiki/Wikipedia:Lua/To_do where not only GCI mentors but also other community contributors can follow the progress and help.

Pywikibot
Pywikibot is a Python-based framework to write bots for MediaWiki. See https://www.mediawiki.org/wiki/Manual:Pywikibot for more information. Patches can be submitted via Gerrit (you need a MediaWiki.org account). More documentation on Gerrit can be found at https://www.mediawiki.org/wiki/Manual:Pywikibot/Gerrit. After you have successfully claimed this task in Google Melange please do use the task in Phabricator for communication instead of Google Melange. This allows more PWB developers to be reached! General development questions can be asked on the Pywikibot mailing list at https://lists.wikimedia.org/mailman/listinfo/pywikipedia-l and the #pywikibot IRC channel (see https://www.mediawiki.org/wiki/MediaWiki_on_IRC).

User Interface: SVG Graphics
Using bitmap images creates two problems: They have a bad quality in high resolution displays and they are difficult to edit. Join the community goal of converting all logos to SVG! Your task is: This task requires existing graphics skills working with a Vector graphics application (e.g. Inkscape). Links to SVG file(s) that you have created are welcome. Basic knowledge of CSS might also be helpful for integration.
 * 1) Create exact SVG replicas of these bitmap files (add link here to bitmap file(s)).
 * 2) Upload the logos to https://commons.wikimedia.org, using this name fomat: (add here).svg. After publishing each image, edit the description following this example: (add example)
 * 3) Notify the completion of your task: In addition to marking the task ready for review here in Google Melange, you must notify it also in the bug report (link?) tracking the progress of this community project. Just add a comment there with the links to your SVG file(s) in Commons.

VisualEditor
VisualEditor is MediaWiki's rich-text editor (see https://en.wikipedia.org/wiki/Online_rich-text_editor for general information). You can find out more about it at https://www.mediawiki.org/wiki/Extension:VisualEditor.