Summoner Search Site

The site can be accessed from: http://summoner-search.sreeve.tech

The summoner Search site is a single page application that heavily uses JavaScript and the Riot Games JSON API to allows users of the site to get up to date information about League of Legends accounts.

###Using the Site

The site provides a search bar which a user can enter a summoner name (League of Legends account name) that they would like to search for, a drop down list also allows you to select the region which the search will be performed in. When a summoner name is entered the API will be used to provide a brief account overview such as a win/loss ratio and the accounts most played Champions (a playable character in the game). Below this is a match list showing a summary of recently played games. Each game in the list shows the Champion that was played, the game mode, how long ago the game was played, the result of the game (victory/defeat) and the KDA of the player (KDA stats for kills/ deaths/assists and is essentially the players score). Each of these games can be clicked on to provide a more detailed match summary.

(All test names provided should be searched on the EUW region)

The following summoner names can be used to test the site:

• Morphig
• Fugger
• JJWF
• Mistfall
• Toxaris
• Dezachu
• AlexRL

###The API The Riot Games API provides a large number of different request endpoints(request URLs) that can be used to retrieve information from the API in JSON format. Each endpoint returns different information from the API and in most cases will provide IDs which are then used in future API calls, some example endpoints are:

• /api/lol/{region}/v1.4/summoner/by-name/{summonerNames} - Which takes a summoner name and provides information about that summoner. This request returns a summoner ID which can be used to in other calls.
• /api/lol/{region}/v2.2/match/{matchId} - Which takes a matchId and provides detailed information for that specific match.

#####Making API Calls The Riot Games API does not allow requests to be made directly from JavaScript and will cause a CORS error if attempted. So I could make calls to the API I wrote a very small piece of PHP which makes the actual call to the API and returns the JSON. My JavaScript contains a file called riotApiHandler which takes an API endpoint and sends it to the PHP code hosted on my server which adds the API key makes the actual call. This is also the correct way to make API calls according to the Riot Games API as all API keys should be hidden server side so they can not be accessed by the public

#####Rate Limiting Unfortunately when first signing up to use the API you are provided with a development API key which has a strict rate limit applied to it which limits the amount of requests that can be made to the API to 10 requests every 10 seconds. This meant that in order to make the site work properly some workarounds were needed (This was discussed with Dave).

######The Workarounds The rate limit caused me to have to be very careful with how many times I made requests to the API. I reduced the amount of requests I was making a couple of ways which were:

• Download images provided from the API and serve them myself. This was used done for both champion images and item images. This meant that instead of getting an ID and using that ID to make a request for the image name I could just name the image after the corresponding ID and use this in my img src. This also reduced loading speeds.
• The next main way in which I reduced requests was to use a different endpoint to retrieve the list of previous matches. The original way that I was creating the list of recent matches was to get a list of all the match IDs for the searched summoner and then use these match IDs to get more detailed information like the game mode and when the game was played. This however meant that I needed to make 10 requests just to build the match list. To get around this problem I had to change the endpoint that I was using. The new endpoint allowed me to get the 10 most recent matches including all of the more in depth detail that I wanted like game mode and game stats. The downside to this was that I was forced to only display the last 10 games. The original method returned many more matches.

###Design The aim of the site design wise was to provide a very simple and minimalistic approach to displaying recent game information for League of Legends accounts on both mobile and desktop. The site uses mobile first design and uses CSS breakpoints to provide tailored views for mobile, tablet and desktop.

###Development Process As part of my development process I asked a number of friends who are familiar with League of Legends to try using my site and to provide any feedback they had. From these testing session I added a couple of features.

• Previous iterations of the match list didn't include the game mode or any indication of when the game was played. This caused the majority of people who tested the site to comment that it was unclear on which order to read the matches, vertically or horizontally. From this feedback I added how long ago the game was played, which gave a better indiction of what order the games were played in.
• Another piece of feedback I received was it being unclear on what summoner the displayed information was for. This feedback was what inspired the summoner header when a search is performed which contains; the searched name, statistics and most played champions.

I found these small testing sessions incredibly useful and as each user was normally using a different browser or screen size it also highlighted a number of smaller issues such as elements not displaying on certain screen sizes which I could then go amend.

###JavaScript

The JavaScript used in the site is all written from scratch and uses some ES6 features and the JavaScript design pattern, Revealing Module Pattern. The ES6 features that are used are:

• Let to declare variables instead of Var.
• Use Strict.
• Template literals

The Revealing Module Pattern was used through out my site. The pattern allows for the emulation of classes which include both private and public methods and variables allowing certain things to be hidden from global scope. This is achieved by declaring each JavaScript file as an anonymous function that returns an object with pointers to the functions that should be available publicly, all other variables and functions are private. More about the revealing module pattern can be read here.

###Testing The site has been tested on Desktop using Chrome and Firefox as well as mobile and tablet using the Chrome browser for Android.

###HTML Validation As the majority of the HTML is inserted to the website, validating the website from the URL will not give true results. The best way to validate the website is to perform a search for a summoner to generate the HTML, then copy the HTML from the browser developer tools. To do this right click on the html tag and select copy outer html. This however will likely not include the DOCTYPE from the HTML.

During testing I received no errors from the W3C HTML validator.