refactor: added FlexLayout for flex layouts

* add show_icons option to show/hide star and fork icon in repo cards

* resolve conflict

* resolve conflict

* hide star and fork stats in repo card if count of equals to zero

* HOTFIX

* HOTFIX

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: ["https://www.paypal.me/anuraghazra"] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,20 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots / Live demo link (paste the github-readme-stats link as markdown image)**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/test.yml

@@ -0,0 +1,36 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+
+      - name: Cache node modules
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-node-modules
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-npm-cache-
+
+      - name: Install & Test
+        run: |
+          npm install
+          npm run test

.gitignore

@@ -1,3 +1,4 @@
 .vercel
 .env
-node_modules
+node_modules
+package-lock.json

.vercelignore

@@ -1 +1,2 @@
-.env
+.env
+package-lock.json

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Anurag Hazra
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

api/index.js

@@ -1,162 +1,45 @@
-const axios = require("axios");
 require("dotenv").config();
-
-async function fetchStats(username) {
-  const res = await axios({
-    url: "https://api.github.com/graphql",
-    method: "post",
-    headers: {
-      Authorization: `bearer ${process.env.GITHUB_TOKEN}`,
-    },
-    data: {
-      query: `
-        query userInfo($login: String!) {
-          user(login: $login) {
-            name
-            repositoriesContributedTo(first: 100, contributionTypes: [COMMIT, ISSUE, PULL_REQUEST, REPOSITORY]) {
-              totalCount
-            }
-            contributionsCollection {
-              totalCommitContributions
-            }
-            pullRequests(first: 100) {
-              totalCount
-            }
-            issues(first: 100) {
-              totalCount
-            }
-            repositories(first: 100) {
-              nodes {
-                stargazers {
-                  totalCount
-                }
-              }
-            }
-          }
-        }
-      `,
-      variables: {
-        login: username,
-      },
-    },
-  });
-
-  const stats = {
-    name: "",
-    totalPRs: 0,
-    totalCommits: 0,
-    totalIssues: 0,
-    totalStars: 0,
-    contributedTo: 0,
-  };
-  if (res.data.error) return stats;
-
-  const user = res.data.data.user;
-
-  stats.name = user.name;
-  stats.totalIssues = user.issues.totalCount;
-  stats.totalCommits = user.contributionsCollection.totalCommitContributions;
-  stats.totalPRs = user.pullRequests.totalCount;
-  stats.contributedTo = user.repositoriesContributedTo.totalCount;
-
-  stats.totalStars = user.repositories.nodes.reduce((prev, curr) => {
-    return prev + curr.stargazers.totalCount;
-  }, 0);
-
-  return stats;
-}
-
-const renderSVG = (stats, options) => {
-  const {
-    name,
-    totalStars,
-    totalCommits,
-    totalIssues,
-    totalPRs,
-    contributedTo,
-  } = stats;
-  const { hide, show_icons } = options || {};
-
-  const STAT_MAP = {
-    stars: `
-      <tspan x="25" dy="25" class="stat bold">
-      <tspan class="icon star-icon" fill="#4C71F2">★</tspan> Total Stars:</tspan>
-      <tspan x="155" dy="0" class="stat">${totalStars}</tspan>
-    `,
-    commits: `
-      <tspan x="25" dy="25" class="stat bold">
-      <tspan class="icon" fill="#4C71F2">🕗</tspan> Total Commits:</tspan>
-      <tspan x="155" dy="0" class="stat">${totalCommits}</tspan>
-    `,
-    prs: `
-      <tspan x="25" dy="25" class="stat bold">
-      <tspan class="icon" fill="#4C71F2">🔀</tspan> Total PRs:</tspan>
-      <tspan x="155" dy="0" class="stat">${totalPRs}</tspan>
-    `,
-    issues: `
-      <tspan x="25" dy="25" class="stat bold">
-      <tspan class="icon" fill="#4C71F2">ⓘ</tspan> Total Issues:</tspan>
-      <tspan x="155" dy="0" class="stat">${totalIssues}</tspan>
-    `,
-    contribs: `
-      <tspan x="25" dy="25" class="stat bold"><tspan class="icon" fill="#4C71F2">📕</tspan> Contributed to:</tspan>
-      <tspan x="155" dy="0" class="stat">${contributedTo} repos</tspan> 
-    `,
-  };
-
-  const statItems = Object.keys(STAT_MAP)
-    .filter((key) => !hide.includes(key))
-    .map((key) => STAT_MAP[key]);
-
-  const height = 45 + (statItems.length + 1) * 25;
-
-  return `
-    <svg width="495" height="${height}" viewBox="0 0 495 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
-      <style>
-      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
-      .stat { font: 600 14px 'Segoe UI', Ubuntu, Sans-Serif; fill: #333 }
-      .star-icon { font: 600 17px 'Segoe UI', Ubuntu, Sans-Serif; }
-      .bold { font-weight: 700 }
-      .icon {
-        display: none;
-        ${show_icons && "display: block"}
-      }
-      </style>
-      <rect x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>
-     
-      <text x="25" y="35" class="header">${name}'s github stats</text>
-      <text y="45">
-        ${statItems}
-      </text>
-    </svg>
-  `;
-};
+const { renderError, parseBoolean } = require("../src/utils");
+const fetchStats = require("../src/fetchStats");
+const renderStatsCard = require("../src/renderStatsCard");
 
 module.exports = async (req, res) => {
-  const username = req.query.username;
-  const hide = req.query.hide;
-  const show_icons = req.query.show_icons;
-  let {
-    name,
-    totalPRs,
-    totalCommits,
-    totalStars,
-    totalIssues,
-    contributedTo,
-  } = await fetchStats(username);
+  const {
+    username,
+    hide,
+    hide_title,
+    hide_border,
+    hide_rank,
+    show_icons,
+    line_height,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+  } = req.query;
+  let stats;
 
+  res.setHeader("Cache-Control", "public, max-age=1800");
   res.setHeader("Content-Type", "image/svg+xml");
+
+  try {
+    stats = await fetchStats(username);
+  } catch (err) {
+    return res.send(renderError(err.message));
+  }
+
   res.send(
-    renderSVG(
-      {
-        name,
-        totalStars,
-        totalCommits,
-        totalIssues,
-        totalPRs,
-        contributedTo,
-      },
-      { hide: JSON.parse(hide || "[]"), show_icons }
-    )
+    renderStatsCard(stats, {
+      hide: JSON.parse(hide || "[]"),
+      show_icons: parseBoolean(show_icons),
+      hide_title: parseBoolean(hide_title),
+      hide_border: parseBoolean(hide_border),
+      hide_rank: parseBoolean(hide_rank),
+      line_height,
+      title_color,
+      icon_color,
+      text_color,
+      bg_color,
+    })
   );
 };

api/pin.js

@@ -0,0 +1,38 @@
+require("dotenv").config();
+const { renderError, parseBoolean } = require("../src/utils");
+const fetchRepo = require("../src/fetchRepo");
+const renderRepoCard = require("../src/renderRepoCard");
+
+module.exports = async (req, res) => {
+  const {
+    username,
+    repo,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+    show_owner,
+  } = req.query;
+
+  let repoData;
+
+  res.setHeader("Cache-Control", "public, max-age=1800");
+  res.setHeader("Content-Type", "image/svg+xml");
+
+  try {
+    repoData = await fetchRepo(username, repo);
+  } catch (err) {
+    console.log(err);
+    return res.send(renderError(err.message));
+  }
+
+  res.send(
+    renderRepoCard(repoData, {
+      title_color,
+      icon_color,
+      text_color,
+      bg_color,
+      show_owner: parseBoolean(show_owner),
+    })
+  );
+};

jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  clearMocks: true,
+};

package-lock.json

@@ -1,46 +0,0 @@
-{
-  "name": "github-readme-stats",
-  "version": "1.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "axios": {
-      "version": "0.19.2",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
-      "integrity": "sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==",
-      "dev": true,
-      "requires": {
-        "follow-redirects": "1.5.10"
-      }
-    },
-    "debug": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-      "dev": true,
-      "requires": {
-        "ms": "2.0.0"
-      }
-    },
-    "dotenv": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
-      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
-    },
-    "follow-redirects": {
-      "version": "1.5.10",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
-      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
-      "dev": true,
-      "requires": {
-        "debug": "=3.1.0"
-      }
-    },
-    "ms": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
-      "dev": true
-    }
-  }
-}

package.json

@@ -1,15 +1,21 @@
 {
   "name": "github-readme-stats",
   "version": "1.0.0",
-  "description": "",
+  "description": "Dynamically generate stats for your github readmes",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest",
+    "test:watch": "jest --watch"
   },
   "author": "Anurag Hazra",
   "license": "MIT",
   "devDependencies": {
-    "axios": "^0.19.2"
+    "@testing-library/dom": "^7.20.0",
+    "@testing-library/jest-dom": "^5.11.0",
+    "axios": "^0.19.2",
+    "axios-mock-adapter": "^1.18.1",
+    "css-to-object": "^1.1.0",
+    "jest": "^26.1.0"
   },
   "dependencies": {
     "dotenv": "^8.2.0"

readme.md

@@ -1,20 +1,53 @@
-## Github Readme stats
+<p align="center">
+ <img width="100px" src="https://res.cloudinary.com/anuraghazra/image/upload/v1594908242/logo_ccswme.svg" align="center" alt="Github Readme Stats" /> 
+ <h2 align="center">GitHub Readme Stats</h2>
+ <p align="center">Get dynamically generated GitHub stats on your readmes!</p>
+</p>
 
-Get dynamically generated github stats on your readmes!
+  <p align="center">
+    <a href="https://github.com/anuraghazra/github-readme-stats/actions">
+      <img alt="Tests Passing" src="https://github.com/anuraghazra/github-readme-stats/workflows/Test/badge.svg" />
+    </a>
+    <a href="https://github.com/anuraghazra/github-readme-stats/issues">
+      <img alt="Issues" src="https://img.shields.io/github/issues/anuraghazra/github-readme-stats?color=0088ff" />
+    </a>
+    <a href="https://github.com/anuraghazra/github-readme-stats/pulls">
+      <img alt="GitHub pull requests" src="https://img.shields.io/github/issues-pr/anuraghazra/github-readme-stats?color=0088ff" />
+    </a>
+  </p>
 
-## How to use
+  <p align="center">
+    <a href="#demo">View Demo</a>
+    ·
+    <a href="https://github.com/anuraghazra/github-readme-stats/issues">Report Bug</a>
+    ·
+    <a href="https://github.com/anuraghazra/github-readme-stats/issues">Request Feature</a>
+  </p>
+</p>
+<p align="center">Loved the project? Please consider <a href="https://www.paypal.me/anuraghazra">donating</a> to help it improve!
 
-Copy paste this into your markdown content and thats it. simple!
+# Features
 
-change the `?username=` value to your GitHubs's username
+- [GitHub Stats Card](#github-stats-card)
+- [GitHub Extra Pins](#github-extra-pins)
+- [Customization](#customization)
+- [Deploy Yourself](#deploy-on-your-own-vercel-instance)
+
+# GitHub Stats Card
+
+Copy paste this into your markdown content, and that's it. Simple!
+
+Change the `?username=` value to your GitHub's username.
 
 ```md
-![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra)
+[![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra)](https://github.com/anuraghazra/github-readme-stats)
 ```
 
-### Hiding certain stats
+_Note: Ranks are calculated based on user's stats, see [src/calculateRank.js](./src/calculateRank.js)_
 
-To hide any specific stats you can pass a query parameter `?hide=` with an array of items you wanna hide.
+### Hiding individual stats
+
+To hide any specific stats, you can pass a query parameter `?hide=` with an array of items you wanna hide.
 
 > Options: `&hide=["stars","prs","issues","contribs"]`
 
@@ -24,13 +57,38 @@ To hide any specific stats you can pass a query parameter `?hide=` with an array
 
 ### Showing icons
 
-To enable icons you can pass `show_icons=true` in the query param like so
+To enable icons, you can pass `show_icons=true` in the query param, like so:
 
 ```md
 ![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra&show_icons=true)
 ```
 
-## Demo
+### Customization
+
+You can customize the appearance of your `Stats Card` or `Repo Card` however you want with URL params.
+
+Customization Options:
+
+| Option      | type      | description                          | Stats Card (default) | Repo Card (default) |
+| ----------- | --------- | ------------------------------------ | -------------------- | ------------------- |
+| title_color | hex color | title color                          | 2f80ed               | 2f80ed              |
+| text_color  | hex color | body color                           | 333                  | 333                 |
+| icon_color  | hex color | icon color                           | 4c71f2               | 586069              |
+| bg_color    | hex color | card bg color                        | FFFEFE               | FFFEFE              |
+| line_height | number    | control the line-height between text | 30                   | N/A                 |
+| hide_rank   | boolean   | hides the ranking                    | false                | N/A                 |
+| hide_title  | boolean   | hides the stats title                | false                | N/A                 |
+| hide_border | boolean   | hides the stats card border          | false                | N/A                 |
+| show_owner  | boolean   | shows owner name in repo card        | N/A                  | false               |
+| show_icons  | boolean   | shows icons                          | false                | N/A                 |
+
+- You can also customize the cards to be compatible with dark mode
+
+```md
+![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra&show_icons=true&title_color=fff&icon_color=79ff97&text_color=9f9f9f&bg_color=151515)
+```
+
+### Demo
 
 - Default
 
@@ -44,6 +102,94 @@ To enable icons you can pass `show_icons=true` in the query param like so
 
 ![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra&hide=["issues"]&show_icons=true)
 
+- Customizing stats card
+
+![Anurag's github stats](https://github-readme-stats.vercel.app/api/?username=anuraghazra&show_icons=true&title_color=fff&icon_color=79ff97&text_color=9f9f9f&bg_color=151515)
+
+- Customizing repo card
+
+![Customized Card](https://github-readme-stats.vercel.app/api/pin?username=anuraghazra&repo=github-readme-stats&title_color=fff&icon_color=f9f9f9&text_color=9f9f9f&bg_color=151515)
+
+# GitHub Extra Pins
+
+GitHub extra pins allow you to pin more than 6 repositories in your profile using a GitHub readme profile.
+
+Yey! You are no longer limited to 6 pinned repositories.
+
+### Usage
+
+Copy-paste this code into your readme and change the links.
+
+Endpoint: `api/pin?username=anuraghazra&repo=github-readme-stats`
+
+```md
+[![ReadMe Card](https://github-readme-stats.vercel.app/api/pin/?username=anuraghazra&repo=github-readme-stats)](https://github.com/anuraghazra/github-readme-stats)
+```
+
+### Demo
+
+[![ReadMe Card](https://github-readme-stats.vercel.app/api/pin/?username=anuraghazra&repo=github-readme-stats)](https://github.com/anuraghazra/github-readme-stats)
+
+Use [show_owner](#customization) variable to include the repo's owner username
+
+[![ReadMe Card](https://github-readme-stats.vercel.app/api/pin/?username=anuraghazra&repo=github-readme-stats&show_owner=true)](https://github.com/anuraghazra/github-readme-stats)
+
+### Quick Tip (Align The Repo Cards)
+
+You usually won't be able to layout the images side by side. To do that you can use this approach:
+
+```md
+<a href="https://github.com/anuraghazra/github-readme-stats">
+  <img align="left" src="https://github-readme-stats.vercel.app/api/pin/?username=anuraghazra&repo=github-readme-stats" />
+</a>
+<a href="https://github.com/anuraghazra/convoychat">
+  <img align="left" src="https://github-readme-stats.vercel.app/api/pin/?username=anuraghazra&repo=convoychat" />
+</a>
+```
+
+## Deploy on your own Vercel instance
+
+Since the GitHub API only allows 5k requests per hour, it is possible that my `https://github-readme-stats.vercel.app/api` could hit the rate limiter. If you host it on your own Vercel server, then you don't have to worry about anything. Click on the deploy button to get started!
+
+NOTE: Since [#58](https://github.com/anuraghazra/github-readme-stats/pull/58) we should be able to handle more than 5k requests and have no issues with downtime :D
+
+[![Deploy to Vercel](https://vercel.com/button)](https://vercel.com/import/project?template=https://github.com/anuraghazra/github-readme-stats)
+
+<details>
+ <summary>Guide on setting up Vercel</summary>
+
+1. Go to [vercel.com](https://vercel.com/)
+1. Click on `Log in`  
+   ![](https://files.catbox.moe/tct1wg.png)
+1. Sign in with GitHub by pressing `Continue with GitHub`  
+   ![](https://files.catbox.moe/btd78j.jpeg)
+1. Sign into GitHub and allow access to all repositories, if prompted
+1. Fork this repo
+1. Go back to your [Vercel dashboard](https://vercel.com/dashboard)
+1. Select `Import Project`  
+   ![](https://files.catbox.moe/qckos0.png)
+1. Select `Import Git Repository`  
+   ![](https://files.catbox.moe/pqub9q.png)
+1. Select root and keep everything as is, just add your environment variable named PAT_1 (as shown), which will contain a personal access token (PAT), which you can easily create [here](https://github.com/settings/tokens/new) (leave everything as is, just name it something, it can be anything you want)
+   ![](https://files.catbox.moe/caem5b.png)
+1. Click deploy, and you're good to go. See your domains to use the API!
+</details>
+
+## :sparkling_heart: Support the project
+
+I open-source almost everything I can, and I try to reply to everyone needing help using these projects. Obviously,
+this takes time. You can use this service for free.
+
+However, if you are using this project and happy with it or just want to encourage me to continue creating stuff, there are few ways you can do it :-
+
+- Giving proper credit when you use github-readme-stats on your readme, linking back to it :D
+- Starring and sharing the project :rocket:
+- [![paypal.me/anuraghazra](https://ionicabizau.github.io/badges/paypal.svg)](https://www.paypal.me/anuraghazra) - You can make one-time donations via PayPal. I'll probably buy a ~~coffee~~ tea. :tea:
+
+Thanks! :heart:
+
+---
+
 Contributions are welcomed! <3
 
-Made with :heart: and javascript.
+Made with :heart: and JavaScript.

src/calculateRank.js

@@ -0,0 +1,93 @@
+// https://stackoverflow.com/a/5263759/10629172
+function normalcdf(mean, sigma, to) {
+  var z = (to - mean) / Math.sqrt(2 * sigma * sigma);
+  var t = 1 / (1 + 0.3275911 * Math.abs(z));
+  var a1 = 0.254829592;
+  var a2 = -0.284496736;
+  var a3 = 1.421413741;
+  var a4 = -1.453152027;
+  var a5 = 1.061405429;
+  var erf =
+    1 - ((((a5 * t + a4) * t + a3) * t + a2) * t + a1) * t * Math.exp(-z * z);
+  var sign = 1;
+  if (z < 0) {
+    sign = -1;
+  }
+  return (1 / 2) * (1 + sign * erf);
+}
+
+function calculateRank({
+  totalRepos,
+  totalCommits,
+  contributions,
+  followers,
+  prs,
+  issues,
+  stargazers,
+}) {
+  const COMMITS_OFFSET = 1.65;
+  const CONTRIBS_OFFSET = 1.65;
+  const ISSUES_OFFSET = 1;
+  const STARS_OFFSET = 0.75;
+  const PRS_OFFSET = 0.5;
+  const FOLLOWERS_OFFSET = 0.45;
+  const REPO_OFFSET = 1;
+
+  const ALL_OFFSETS =
+    CONTRIBS_OFFSET +
+    ISSUES_OFFSET +
+    STARS_OFFSET +
+    PRS_OFFSET +
+    FOLLOWERS_OFFSET +
+    REPO_OFFSET;
+
+  const RANK_S_VALUE = 1;
+  const RANK_DOUBLE_A_VALUE = 25;
+  const RANK_A2_VALUE = 45;
+  const RANK_A3_VALUE = 60;
+  const RANK_B_VALUE = 100;
+
+  const TOTAL_VALUES =
+    RANK_S_VALUE + RANK_A2_VALUE + RANK_A3_VALUE + RANK_B_VALUE;
+
+  // prettier-ignore
+  const score = (
+    totalCommits * COMMITS_OFFSET +
+    contributions * CONTRIBS_OFFSET +
+    issues * ISSUES_OFFSET +
+    stargazers * STARS_OFFSET +
+    prs * PRS_OFFSET +
+    followers * FOLLOWERS_OFFSET + 
+    totalRepos * REPO_OFFSET 
+  ) / 100;
+
+  const normalizedScore = normalcdf(score, TOTAL_VALUES, ALL_OFFSETS) * 100;
+
+  let level = "";
+
+  if (normalizedScore < RANK_S_VALUE) {
+    level = "S+";
+  }
+  if (
+    normalizedScore >= RANK_S_VALUE &&
+    normalizedScore < RANK_DOUBLE_A_VALUE
+  ) {
+    level = "S";
+  }
+  if (
+    normalizedScore >= RANK_DOUBLE_A_VALUE &&
+    normalizedScore < RANK_A2_VALUE
+  ) {
+    level = "A++";
+  }
+  if (normalizedScore >= RANK_A2_VALUE && normalizedScore < RANK_A3_VALUE) {
+    level = "A+";
+  }
+  if (normalizedScore >= RANK_A3_VALUE && normalizedScore < RANK_B_VALUE) {
+    level = "B+";
+  }
+
+  return { level, score: normalizedScore };
+}
+
+module.exports = calculateRank;

src/fetchRepo.js

@@ -0,0 +1,79 @@
+const { request } = require("./utils");
+const retryer = require("./retryer");
+
+const fetcher = (variables, token) => {
+  return request(
+    {
+      query: `
+      fragment RepoInfo on Repository {
+        name
+        nameWithOwner
+        isPrivate
+        isArchived
+        stargazers {
+          totalCount
+        }
+        description
+        primaryLanguage {
+          color
+          id
+          name
+        }
+        forkCount
+      }
+      query getRepo($login: String!, $repo: String!) {
+        user(login: $login) {
+          repository(name: $repo) {
+            ...RepoInfo
+          }
+        }
+        organization(login: $login) {
+          repository(name: $repo) {
+            ...RepoInfo
+          }
+        }
+      }
+    `,
+      variables,
+    },
+    {
+      Authorization: `bearer ${token}`,
+    }
+  );
+};
+
+async function fetchRepo(username, reponame) {
+  if (!username || !reponame) {
+    throw new Error("Invalid username or reponame");
+  }
+
+  let res = await retryer(fetcher, { login: username, repo: reponame });
+
+  const data = res.data.data;
+
+  if (!data.user && !data.organization) {
+    throw new Error("Not found");
+  }
+
+  const isUser = data.organization === null && data.user;
+  const isOrg = data.user === null && data.organization;
+
+  if (isUser) {
+    if (!data.user.repository || data.user.repository.isPrivate) {
+      throw new Error("User Repository Not found");
+    }
+    return data.user.repository;
+  }
+
+  if (isOrg) {
+    if (
+      !data.organization.repository ||
+      data.organization.repository.isPrivate
+    ) {
+      throw new Error("Organization Repository Not found");
+    }
+    return data.organization.repository;
+  }
+}
+
+module.exports = fetchRepo;

src/fetchStats.js

@@ -0,0 +1,93 @@
+const { request } = require("./utils");
+const retryer = require("./retryer");
+const calculateRank = require("./calculateRank");
+require("dotenv").config();
+
+const fetcher = (variables, token) => {
+  return request(
+    {
+      query: `
+      query userInfo($login: String!) {
+        user(login: $login) {
+          name
+          login
+          contributionsCollection {
+            totalCommitContributions
+          }
+          repositoriesContributedTo(first: 1, contributionTypes: [COMMIT, ISSUE, PULL_REQUEST, REPOSITORY]) {
+            totalCount
+          }
+          pullRequests(first: 1) {
+            totalCount
+          }
+          issues(first: 1) {
+            totalCount
+          }
+          followers {
+            totalCount
+          }
+          repositories(first: 100, ownerAffiliations: OWNER, isFork: false, orderBy: {direction: DESC, field: STARGAZERS}) {
+            totalCount
+            nodes {
+              stargazers {
+                totalCount
+              }
+            }
+          }
+        }
+      }
+      `,
+      variables,
+    },
+    {
+      Authorization: `bearer ${token}`,
+    }
+  );
+};
+
+async function fetchStats(username) {
+  if (!username) throw Error("Invalid username");
+
+  const stats = {
+    name: "",
+    totalPRs: 0,
+    totalCommits: 0,
+    totalIssues: 0,
+    totalStars: 0,
+    contributedTo: 0,
+    rank: { level: "C", score: 0 },
+  };
+
+  let res = await retryer(fetcher, { login: username });
+
+  if (res.data.errors) {
+    console.log(res.data.errors);
+    throw Error(res.data.errors[0].message || "Could not fetch user");
+  }
+
+  const user = res.data.data.user;
+
+  stats.name = user.name || user.login;
+  stats.totalIssues = user.issues.totalCount;
+  stats.totalCommits = user.contributionsCollection.totalCommitContributions;
+  stats.totalPRs = user.pullRequests.totalCount;
+  stats.contributedTo = user.repositoriesContributedTo.totalCount;
+
+  stats.totalStars = user.repositories.nodes.reduce((prev, curr) => {
+    return prev + curr.stargazers.totalCount;
+  }, 0);
+
+  stats.rank = calculateRank({
+    totalCommits: stats.totalCommits,
+    totalRepos: user.repositories.totalCount,
+    followers: user.followers.totalCount,
+    contributions: stats.contributedTo,
+    stargazers: stats.totalStars,
+    prs: stats.totalPRs,
+    issues: stats.totalIssues,
+  });
+
+  return stats;
+}
+
+module.exports = fetchStats;

src/getStyles.js

@@ -0,0 +1,94 @@
+const calculateCircleProgress = (value) => {
+  let radius = 40;
+  let c = Math.PI * (radius * 2);
+
+  if (value < 0) value = 0;
+  if (value > 100) value = 100;
+
+  let percentage = ((100 - value) / 100) * c;
+  return percentage;
+};
+
+const getAnimations = ({ progress }) => {
+  return `
+    /* Animations */
+    @keyframes scaleIn {
+      from {
+        transform: translate(-5px, 5px) scale(0);
+      }
+      to {
+        transform: translate(-5px, 5px) scale(1);
+      }
+    }
+    @keyframes fadeIn {
+      from {
+        opacity: 0;
+      }
+      to {
+        opacity: 1;
+      }
+    }
+    @keyframes rankAnimation {
+      from {
+        stroke-dashoffset: ${calculateCircleProgress(0)};
+      }
+      to {
+        stroke-dashoffset: ${calculateCircleProgress(progress)};
+      }
+    }
+  `;
+};
+
+const getStyles = ({
+  titleColor,
+  textColor,
+  iconColor,
+  show_icons,
+  progress,
+}) => {
+  return `
+    .header {
+      font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${titleColor}; 
+      animation: fadeIn 0.8s ease-in-out forwards;
+    }
+    .stat { 
+      font: 600 14px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor};
+    }
+    .stagger { 
+      opacity: 0;
+      animation: fadeIn 0.3s ease-in-out forwards;
+    }
+    .rank-text { 
+      font: 800 24px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor}; 
+      animation: scaleIn 0.3s ease-in-out forwards;
+    }
+    
+    .bold { font-weight: 700 }
+    .icon {
+      fill: ${iconColor};
+      display: ${!!show_icons ? "block" : "none"};
+    }
+    
+    .rank-circle-rim {
+      stroke: ${titleColor};
+      fill: none;
+      stroke-width: 6;
+      opacity: 0.2;
+    }
+    .rank-circle {
+      stroke: ${titleColor};
+      stroke-dasharray: 250;
+      fill: none;
+      stroke-width: 6;
+      stroke-linecap: round;
+      opacity: 0.8;
+      transform-origin: -10px 8px;
+      transform: rotate(-90deg);
+      animation: rankAnimation 1s forwards ease-in-out;
+    }
+
+    ${process.env.NODE_ENV === "test" ? "" : getAnimations({ progress })}
+  `;
+};
+
+module.exports = getStyles;

src/icons.js

@@ -0,0 +1,11 @@
+const icons = {
+  star: `<path fill-rule="evenodd" d="M8 .25a.75.75 0 01.673.418l1.882 3.815 4.21.612a.75.75 0 01.416 1.279l-3.046 2.97.719 4.192a.75.75 0 01-1.088.791L8 12.347l-3.766 1.98a.75.75 0 01-1.088-.79l.72-4.194L.818 6.374a.75.75 0 01.416-1.28l4.21-.611L7.327.668A.75.75 0 018 .25zm0 2.445L6.615 5.5a.75.75 0 01-.564.41l-3.097.45 2.24 2.184a.75.75 0 01.216.664l-.528 3.084 2.769-1.456a.75.75 0 01.698 0l2.77 1.456-.53-3.084a.75.75 0 01.216-.664l2.24-2.183-3.096-.45a.75.75 0 01-.564-.41L8 2.694v.001z"/>`,
+  commits: `<path fill-rule="evenodd" d="M1.643 3.143L.427 1.927A.25.25 0 000 2.104V5.75c0 .138.112.25.25.25h3.646a.25.25 0 00.177-.427L2.715 4.215a6.5 6.5 0 11-1.18 4.458.75.75 0 10-1.493.154 8.001 8.001 0 101.6-5.684zM7.75 4a.75.75 0 01.75.75v2.992l2.028.812a.75.75 0 01-.557 1.392l-2.5-1A.75.75 0 017 8.25v-3.5A.75.75 0 017.75 4z"/>`,
+  prs: `<path fill-rule="evenodd" d="M7.177 3.073L9.573.677A.25.25 0 0110 .854v4.792a.25.25 0 01-.427.177L7.177 3.427a.25.25 0 010-.354zM3.75 2.5a.75.75 0 100 1.5.75.75 0 000-1.5zm-2.25.75a2.25 2.25 0 113 2.122v5.256a2.251 2.251 0 11-1.5 0V5.372A2.25 2.25 0 011.5 3.25zM11 2.5h-1V4h1a1 1 0 011 1v5.628a2.251 2.251 0 101.5 0V5A2.5 2.5 0 0011 2.5zm1 10.25a.75.75 0 111.5 0 .75.75 0 01-1.5 0zM3.75 12a.75.75 0 100 1.5.75.75 0 000-1.5z"/>`,
+  issues: `<path fill-rule="evenodd" d="M8 1.5a6.5 6.5 0 100 13 6.5 6.5 0 000-13zM0 8a8 8 0 1116 0A8 8 0 010 8zm9 3a1 1 0 11-2 0 1 1 0 012 0zm-.25-6.25a.75.75 0 00-1.5 0v3.5a.75.75 0 001.5 0v-3.5z"/>`,
+  icon: `<path fill-rule="evenodd" d="M2 2.5A2.5 2.5 0 014.5 0h8.75a.75.75 0 01.75.75v12.5a.75.75 0 01-.75.75h-2.5a.75.75 0 110-1.5h1.75v-2h-8a1 1 0 00-.714 1.7.75.75 0 01-1.072 1.05A2.495 2.495 0 012 11.5v-9zm10.5-1V9h-8c-.356 0-.694.074-1 .208V2.5a1 1 0 011-1h8zM5 12.25v3.25a.25.25 0 00.4.2l1.45-1.087a.25.25 0 01.3 0L8.6 15.7a.25.25 0 00.4-.2v-3.25a.25.25 0 00-.25-.25h-3.5a.25.25 0 00-.25.25z"/>`,
+  contribs: `<path fill-rule="evenodd" d="M2 2.5A2.5 2.5 0 014.5 0h8.75a.75.75 0 01.75.75v12.5a.75.75 0 01-.75.75h-2.5a.75.75 0 110-1.5h1.75v-2h-8a1 1 0 00-.714 1.7.75.75 0 01-1.072 1.05A2.495 2.495 0 012 11.5v-9zm10.5-1V9h-8c-.356 0-.694.074-1 .208V2.5a1 1 0 011-1h8zM5 12.25v3.25a.25.25 0 00.4.2l1.45-1.087a.25.25 0 01.3 0L8.6 15.7a.25.25 0 00.4-.2v-3.25a.25.25 0 00-.25-.25h-3.5a.25.25 0 00-.25.25z"/>`,
+  fork: `<path fill-rule="evenodd" d="M5 3.25a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm0 2.122a2.25 2.25 0 10-1.5 0v.878A2.25 2.25 0 005.75 8.5h1.5v2.128a2.251 2.251 0 101.5 0V8.5h1.5a2.25 2.25 0 002.25-2.25v-.878a2.25 2.25 0 10-1.5 0v.878a.75.75 0 01-.75.75h-4.5A.75.75 0 015 6.25v-.878zm3.75 7.378a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm3-8.75a.75.75 0 100-1.5.75.75 0 000 1.5z"></path>`,
+};
+
+module.exports = icons;

src/renderRepoCard.js

@@ -0,0 +1,105 @@
+const {
+  kFormatter,
+  encodeHTML,
+  fallbackColor,
+  FlexLayout,
+} = require("../src/utils");
+const icons = require("./icons");
+
+const renderRepoCard = (repo, options = {}) => {
+  const {
+    name,
+    nameWithOwner,
+    description,
+    primaryLanguage,
+    stargazers,
+    isArchived,
+    forkCount,
+  } = repo;
+  const { title_color, icon_color, text_color, bg_color, show_owner } = options;
+
+  const header = show_owner ? nameWithOwner : name;
+  const langName = primaryLanguage ? primaryLanguage.name : "Unspecified";
+  const langColor = primaryLanguage ? primaryLanguage.color : "#333";
+
+  const height = 120;
+  const shiftText = langName.length > 15 ? 0 : 30;
+
+  let desc = description || "No description provided";
+  if (desc.length > 55) {
+    desc = `${description.slice(0, 55)}..`;
+  }
+
+  const titleColor = fallbackColor(title_color, "#2f80ed");
+  const iconColor = fallbackColor(icon_color, "#586069");
+  const textColor = fallbackColor(text_color, "#333");
+  const bgColor = fallbackColor(bg_color, "#FFFEFE");
+
+  const totalStars = kFormatter(stargazers.totalCount);
+  const totalForks = kFormatter(forkCount);
+
+  const archiveBadge = isArchived
+    ? `
+    <g data-testid="archive-badge" class="archive-badge" transform="translate(320, 38)">
+      <rect stroke="${textColor}" stroke-width="1" width="70" height="20" x="-12" y="-14" ry="10" rx="10"></rect>
+      <text fill="${textColor}">Archived</text>
+    </g>
+    `
+    : "";
+
+  const svgLanguage = `
+    <g transform="translate(30, 100)">
+      <circle data-testid="lang-color" cx="0" cy="-5" r="6" fill="${langColor}" />
+      <text data-testid="lang" class="gray" x="15">${langName}</text>
+    </g>
+  `;
+
+  const svgStars =
+    stargazers.totalCount > 0 &&
+    `
+    <svg class="icon" y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+      ${icons.star}
+    </svg>
+    <text data-testid="stargazers" class="gray" x="25">${totalStars}</text>
+  `;
+
+  const svgForks =
+    totalForks > 0 &&
+    `
+    <svg class="icon" y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+      ${icons.fork}
+    </svg>
+    <text data-testid="forkcount" class="gray" x="25">${totalForks}</text>
+  `;
+
+  return `
+    <svg version="1.1" width="400" height="${height}" viewBox="0 0 400 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <style>
+      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${titleColor} }
+      .description { font: 400 13px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor} }
+      .gray { font: 400 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor} }
+      .icon { fill: ${iconColor} }
+      .archive-badge { font: 600 12px 'Segoe UI', Ubuntu, Sans-Serif; }
+      .archive-badge rect { opacity: 0.2 }
+      </style>
+      <rect data-testid="card-border" x="0.5" y="0.5" width="399" height="99%" rx="4.5" fill="${bgColor}" stroke="#E4E2E2"/>
+      <svg class="icon" x="25" y="25" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+        ${icons.contribs}
+      </svg>
+
+      ${archiveBadge}
+
+      <text x="50" y="38" class="header">${header}</text>
+      <text class="description" x="25" y="70">${encodeHTML(desc)}</text>
+      
+      ${svgLanguage}
+      
+      <g transform="translate(${155 - shiftText}, 100)">
+        ${FlexLayout({ items: [svgStars, svgForks], gap: 65 }).join("")}
+      </g>
+
+    </svg>
+  `;
+};
+
+module.exports = renderRepoCard;

src/renderStatsCard.js

@@ -0,0 +1,191 @@
+const { kFormatter, fallbackColor, FlexLayout } = require("../src/utils");
+const getStyles = require("./getStyles");
+const icons = require("./icons");
+
+const createTextNode = ({ icon, label, value, id, index, showIcons }) => {
+  const kValue = kFormatter(value);
+  const staggerDelay = (index + 3) * 150;
+
+  const labelOffset = showIcons ? `x="25"` : "";
+  const iconSvg = showIcons
+    ? `
+    <svg data-testid="icon" class="icon" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+      ${icon}
+    </svg>
+  `
+    : "";
+  return `
+    <g class="stagger" style="animation-delay: ${staggerDelay}ms" transform="translate(25, 0)">
+      ${iconSvg}
+      <text class="stat bold" ${labelOffset} y="12.5">${label}:</text>
+      <text class="stat" x="135" y="12.5" data-testid="${id}">${kValue}</text>
+    </g>
+  `;
+};
+
+const renderStatsCard = (stats = {}, options = { hide: [] }) => {
+  const {
+    name,
+    totalStars,
+    totalCommits,
+    totalIssues,
+    totalPRs,
+    contributedTo,
+    rank,
+  } = stats;
+  const {
+    hide = [],
+    show_icons = false,
+    hide_title = false,
+    hide_border = false,
+    hide_rank = false,
+    line_height = 25,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+  } = options;
+
+  const lheight = parseInt(line_height);
+
+  const titleColor = fallbackColor(title_color, "#2f80ed");
+  const iconColor = fallbackColor(icon_color, "#4c71f2");
+  const textColor = fallbackColor(text_color, "#333");
+  const bgColor = fallbackColor(bg_color, "#FFFEFE");
+
+  // Meta data for creating text nodes with createTextNode function
+  const STATS = {
+    stars: {
+      icon: icons.star,
+      label: "Total Stars",
+      value: totalStars,
+      id: "stars",
+    },
+    commits: {
+      icon: icons.commits,
+      label: "Total Commits",
+      value: totalCommits,
+      id: "commits",
+    },
+    prs: {
+      icon: icons.prs,
+      label: "Total PRs",
+      value: totalPRs,
+      id: "prs",
+    },
+    issues: {
+      icon: icons.issues,
+      label: "Total Issues",
+      value: totalIssues,
+      id: "issues",
+    },
+    contribs: {
+      icon: icons.contribs,
+      label: "Contributed to",
+      value: contributedTo,
+      id: "contribs",
+    },
+  };
+
+  // filter out hidden stats defined by user & create the text nodes
+  const statItems = Object.keys(STATS)
+    .filter((key) => !hide.includes(key))
+    .map((key, index) =>
+      // create the text nodes, and pass index so that we can calculate the line spacing
+      createTextNode({
+        ...STATS[key],
+        index,
+        showIcons: show_icons,
+      })
+    );
+
+  // Calculate the card height depending on how many items there are
+  // but if rank circle is visible clamp the minimum height to `150`
+  let height = Math.max(
+    45 + (statItems.length + 1) * lheight,
+    hide_rank ? 0 : 150
+  );
+
+  // the better user's score the the rank will be closer to zero so
+  // subtracting 100 to get the progress in 100%
+  const progress = 100 - rank.score;
+
+  const styles = getStyles({
+    titleColor,
+    textColor,
+    iconColor,
+    show_icons,
+    progress,
+  });
+
+  // Conditionally rendered elements
+  const title = hide_title
+    ? ""
+    : `<text x="25" y="35" class="header">${name}'s GitHub Stats</text>`;
+
+  const border = hide_border
+    ? ""
+    : `
+    <rect 
+      data-testid="card-border"
+      x="0.5"
+      y="0.5"
+      width="494"
+      height="99%"
+      rx="4.5"
+      fill="${bgColor}"
+      stroke="#E4E2E2"
+    />
+  `;
+
+  const rankCircle = hide_rank
+    ? ""
+    : `<g data-testid="rank-circle" transform="translate(400, ${
+        height / 1.85
+      })">
+        <circle class="rank-circle-rim" cx="-10" cy="8" r="40" />
+        <circle class="rank-circle" cx="-10" cy="8" r="40" />
+        <g class="rank-text">
+          <text
+            x="${rank.level.length === 1 ? "-4" : "0"}"
+            y="0"
+            alignment-baseline="central"
+            dominant-baseline="central"
+            text-anchor="middle"
+          >
+            ${rank.level}
+          </text>
+        </g>
+      </g>`;
+
+  if (hide_title) {
+    height -= 30;
+  }
+
+  return `
+    <svg width="495" height="${height}" viewBox="0 0 495 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <style>
+        ${styles}
+      </style>
+      
+      ${border}
+      ${title}
+
+      <g data-testid="card-body-content" transform="translate(0, ${
+        hide_title ? -30 : 0
+      })">
+        ${rankCircle}
+
+        <svg x="0" y="55">
+          ${FlexLayout({
+            items: statItems,
+            gap: lheight,
+            direction: "column",
+          }).join("")}
+        </svg>
+      </g>
+    </svg>
+  `;
+};
+
+module.exports = renderStatsCard;

src/retryer.js

@@ -0,0 +1,43 @@
+const retryer = async (fetcher, variables, retries = 0) => {
+  if (retries > 7) {
+    throw new Error("Maximum retries exceeded");
+  }
+  try {
+    console.log(`Trying PAT_${retries + 1}`);
+
+    // try to fetch with the first token since RETRIES is 0 index i'm adding +1
+    let response = await fetcher(
+      variables,
+      process.env[`PAT_${retries + 1}`],
+      retries
+    );
+
+    // prettier-ignore
+    const isRateExceeded = response.data.errors && response.data.errors[0].type === "RATE_LIMITED";
+
+    // if rate limit is hit increase the RETRIES and recursively call the retryer
+    // with username, and current RETRIES
+    if (isRateExceeded) {
+      console.log(`PAT_${retries + 1} Failed`);
+      retries++;
+      // directly return from the function
+      return retryer(fetcher, variables, retries);
+    }
+
+    // finally return the response
+    return response;
+  } catch (err) {
+    // prettier-ignore
+    // also checking for bad credentials if any tokens gets invalidated
+    const isBadCredential = err.response.data && err.response.data.message === "Bad credentials";
+
+    if (isBadCredential) {
+      console.log(`PAT_${retries + 1} Failed`);
+      retries++;
+      // directly return from the function
+      return retryer(fetcher, variables, retries);
+    }
+  }
+};
+
+module.exports = retryer;

src/utils.js

@@ -0,0 +1,89 @@
+const axios = require("axios");
+
+const renderError = (message) => {
+  return `
+    <svg width="495" height="100" viewBox="0 0 495 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <style>
+    .text { font: 600 16px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
+    .small { font: 600 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: #252525 }
+    </style>
+    <rect x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>
+    <text x="25" y="45" class="text">Something went wrong! file an issue at https://git.io/JJmN9</text>
+    <text id="message" x="25" y="65" class="text small">${message}</text>
+    </svg>
+  `;
+};
+
+// https://stackoverflow.com/a/48073476/10629172
+function encodeHTML(str) {
+  return str.replace(/[\u00A0-\u9999<>&](?!#)/gim, function (i) {
+    return "&#" + i.charCodeAt(0) + ";";
+  });
+}
+
+function kFormatter(num) {
+  return Math.abs(num) > 999
+    ? Math.sign(num) * (Math.abs(num) / 1000).toFixed(1) + "k"
+    : Math.sign(num) * Math.abs(num);
+}
+
+function isValidHexColor(hexColor) {
+  return new RegExp(
+    /^([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}|[A-Fa-f0-9]{4})$/
+  ).test(hexColor);
+}
+
+function parseBoolean(value) {
+  if (value === "true") {
+    return true;
+  } else if (value === "false") {
+    return false;
+  } else {
+    return value;
+  }
+}
+
+function fallbackColor(color, fallbackColor) {
+  return (isValidHexColor(color) && `#${color}`) || fallbackColor;
+}
+
+function request(data, headers) {
+  return axios({
+    url: "https://api.github.com/graphql",
+    method: "post",
+    headers,
+    data,
+  });
+}
+
+/**
+ *
+ * @param {String[]} items
+ * @param {Number} gap
+ * @param {string} direction
+ *
+ * @description
+ * Auto layout utility, allows us to layout things
+ * vertically or horizontally with proper gaping
+ */
+function FlexLayout({ items, gap, direction }) {
+  // filter() for filtering out empty strings
+  return items.filter(Boolean).map((item, i) => {
+    let transform = `translate(${gap * i}, 0)`;
+    if (direction === "column") {
+      transform = `translate(0, ${gap * i})`;
+    }
+    return `<g transform="${transform}">${item}</g>`;
+  });
+}
+
+module.exports = {
+  renderError,
+  kFormatter,
+  encodeHTML,
+  isValidHexColor,
+  request,
+  parseBoolean,
+  fallbackColor,
+  FlexLayout,
+};

tests/api.test.js

@@ -0,0 +1,135 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const api = require("../api/index");
+const renderStatsCard = require("../src/renderStatsCard");
+const { renderError } = require("../src/utils");
+const calculateRank = require("../src/calculateRank");
+
+const stats = {
+  name: "Anurag Hazra",
+  totalStars: 100,
+  totalCommits: 200,
+  totalIssues: 300,
+  totalPRs: 400,
+  contributedTo: 500,
+  rank: null,
+};
+stats.rank = calculateRank({
+  totalCommits: stats.totalCommits,
+  totalRepos: 1,
+  followers: 0,
+  contributions: stats.contributedTo,
+  stargazers: stats.totalStars,
+  prs: stats.totalPRs,
+  issues: stats.totalIssues,
+});
+
+const data = {
+  data: {
+    user: {
+      name: stats.name,
+      repositoriesContributedTo: { totalCount: stats.contributedTo },
+      contributionsCollection: { totalCommitContributions: stats.totalCommits },
+      pullRequests: { totalCount: stats.totalPRs },
+      issues: { totalCount: stats.totalIssues },
+      followers: { totalCount: 0 },
+      repositories: {
+        totalCount: 1,
+        nodes: [{ stargazers: { totalCount: 100 } }],
+      },
+    },
+  },
+};
+
+const error = {
+  errors: [
+    {
+      type: "NOT_FOUND",
+      path: ["user"],
+      locations: [],
+      message: "Could not fetch user",
+    },
+  ],
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test /api/", () => {
+  it("should test the request", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderStatsCard(stats, { ...req.query }));
+  });
+
+  it("should render error card on error", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, error);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderError(error.errors[0].message));
+  });
+
+  it("should get the query options", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        hide: `["issues","prs","contribs"]`,
+        show_icons: true,
+        hide_border: true,
+        line_height: 100,
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderStatsCard(stats, {
+        hide: ["issues", "prs", "contribs"],
+        show_icons: true,
+        hide_border: true,
+        line_height: 100,
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+      })
+    );
+  });
+});

tests/calculateRank.test.js

@@ -0,0 +1,18 @@
+require("@testing-library/jest-dom");
+const calculateRank = require("../src/calculateRank");
+
+describe("Test calculateRank", () => {
+  it("should calculate rank correctly", () => {
+    expect(
+      calculateRank({
+        totalCommits: 100,
+        totalRepos: 5,
+        followers: 100,
+        contributions: 61,
+        stargazers: 400,
+        prs: 300,
+        issues: 200,
+      })
+    ).toStrictEqual({ level: "A+", score: 49.16605417270399 });
+  });
+});

tests/fetchRepo.test.js

@@ -0,0 +1,96 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const fetchRepo = require("../src/fetchRepo");
+
+const data_repo = {
+  repository: {
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+const data_user = {
+  data: {
+    user: { repository: data_repo },
+    organization: null,
+  },
+};
+const data_org = {
+  data: {
+    user: null,
+    organization: { repository: data_repo },
+  },
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test fetchRepo", () => {
+  it("should fetch correct user repo", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    let repo = await fetchRepo("anuraghazra", "convoychat");
+    expect(repo).toStrictEqual(data_repo);
+  });
+
+  it("should fetch correct org repo", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data_org);
+
+    let repo = await fetchRepo("anuraghazra", "convoychat");
+    expect(repo).toStrictEqual(data_repo);
+  });
+
+  it("should throw error if user is found but repo is null", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: { repository: null }, organization: null } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "User Repository Not found"
+    );
+  });
+
+  it("should throw error if org is found but repo is null", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: { repository: null } } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "Organization Repository Not found"
+    );
+  });
+
+  it("should throw error if both user & org data not found", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: null } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "Not found"
+    );
+  });
+
+  it("should throw error if repository is private", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, {
+      data: {
+        user: { repository: { ...data_repo, isPrivate: true } },
+        organization: null,
+      },
+    });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "User Repository Not found"
+    );
+  });
+});

tests/fetchStats.test.js

@@ -0,0 +1,80 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const fetchStats = require("../src/fetchStats");
+const calculateRank = require("../src/calculateRank");
+
+const data = {
+  data: {
+    user: {
+      name: "Anurag Hazra",
+      repositoriesContributedTo: { totalCount: 61 },
+      contributionsCollection: { totalCommitContributions: 100 },
+      pullRequests: { totalCount: 300 },
+      issues: { totalCount: 200 },
+      followers: { totalCount: 100 },
+      repositories: {
+        totalCount: 5,
+        nodes: [
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 50 } },
+          { stargazers: { totalCount: 50 } },
+        ],
+      },
+    },
+  },
+};
+
+const error = {
+  errors: [
+    {
+      type: "NOT_FOUND",
+      path: ["user"],
+      locations: [],
+      message: "Could not resolve to a User with the login of 'noname'.",
+    },
+  ],
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test fetchStats", () => {
+  it("should fetch correct stats", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    let stats = await fetchStats("anuraghazra");
+    const rank = calculateRank({
+      totalCommits: 100,
+      totalRepos: 5,
+      followers: 100,
+      contributions: 61,
+      stargazers: 400,
+      prs: 300,
+      issues: 200,
+    });
+
+    expect(stats).toStrictEqual({
+      contributedTo: 61,
+      name: "Anurag Hazra",
+      totalCommits: 100,
+      totalIssues: 200,
+      totalPRs: 300,
+      totalStars: 400,
+      rank,
+    });
+  });
+
+  it("should throw error", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, error);
+
+    await expect(fetchStats("anuraghazra")).rejects.toThrow(
+      "Could not resolve to a User with the login of 'noname'."
+    );
+  });
+});

tests/pin.test.js

@@ -0,0 +1,125 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const pin = require("../api/pin");
+const renderRepoCard = require("../src/renderRepoCard");
+const { renderError } = require("../src/utils");
+
+const data_repo = {
+  repository: {
+    username: "anuraghazra",
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+const data_user = {
+  data: {
+    user: { repository: data_repo.repository },
+    organization: null,
+  },
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test /api/pin", () => {
+  it("should test the request", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderRepoCard(data_repo.repository));
+  });
+
+  it("should get the query options", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+        full_name: "1",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderRepoCard(data_repo.repository, { ...req.query })
+    );
+  });
+
+  it("should render error card if user repo not found", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: { repository: null }, organization: null } });
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderError("User Repository Not found"));
+  });
+
+  it("should render error card if org repo not found", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: { repository: null } } });
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderError("Organization Repository Not found")
+    );
+  });
+});

tests/renderRepoCard.test.js

@@ -0,0 +1,189 @@
+require("@testing-library/jest-dom");
+const cssToObject = require("css-to-object");
+const renderRepoCard = require("../src/renderRepoCard");
+
+const { queryByTestId } = require("@testing-library/dom");
+
+const data_repo = {
+  repository: {
+    nameWithOwner: "anuraghazra/convoychat",
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+describe("Test renderRepoCard", () => {
+  it("should render correctly", () => {
+    document.body.innerHTML = renderRepoCard(data_repo.repository);
+
+    const [header] = document.getElementsByClassName("header");
+
+    expect(header).toHaveTextContent("convoychat");
+    expect(header).not.toHaveTextContent("anuraghazra");
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Help us take over the world! React + TS + GraphQL Chat .."
+    );
+    expect(queryByTestId(document.body, "stargazers")).toHaveTextContent("38k");
+    expect(queryByTestId(document.body, "forkcount")).toHaveTextContent("100");
+    expect(queryByTestId(document.body, "lang")).toHaveTextContent(
+      "TypeScript"
+    );
+    expect(queryByTestId(document.body, "lang-color")).toHaveAttribute(
+      "fill",
+      "#2b7489"
+    );
+  });
+
+  it("should display username in title (full repo name)", () => {
+    document.body.innerHTML = renderRepoCard(data_repo.repository, {
+      show_owner: true,
+    });
+    expect(document.getElementsByClassName("header")[0]).toHaveTextContent(
+      "anuraghazra/convoychat"
+    );
+  });
+
+  it("should trim description", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      description:
+        "Very long long long long long long long long text it should trim it",
+    });
+
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Very long long long long long long long long text it sh.."
+    );
+
+    // Should not trim
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      description: "Small text should not trim",
+    });
+
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Small text should not trim"
+    );
+  });
+
+  it("should shift the text position depending on language length", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      primaryLanguage: {
+        ...data_repo.repository.primaryLanguage,
+        name: "Jupyter Notebook",
+      },
+    });
+
+    expect(document.getElementsByTagName("g")[1]).toHaveAttribute(
+      "transform",
+      "translate(155, 100)"
+    );
+
+    // Small lang
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      primaryLanguage: {
+        ...data_repo.repository.primaryLanguage,
+        name: "Ruby",
+      },
+    });
+
+    expect(document.getElementsByTagName("g")[1]).toHaveAttribute(
+      "transform",
+      "translate(125, 100)"
+    );
+  });
+
+  it("should render default colors properly", () => {
+    document.body.innerHTML = renderRepoCard(data_repo.repository);
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".description"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe("#2f80ed");
+    expect(statClassStyles.fill).toBe("#333");
+    expect(iconClassStyles.fill).toBe("#586069");
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#FFFEFE"
+    );
+  });
+
+  it("should render custom colors properly", () => {
+    const customColors = {
+      title_color: "5a0",
+      icon_color: "1b998b",
+      text_color: "9991",
+      bg_color: "252525",
+    };
+
+    document.body.innerHTML = renderRepoCard(data_repo.repository, {
+      ...customColors,
+    });
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".description"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe(`#${customColors.title_color}`);
+    expect(statClassStyles.fill).toBe(`#${customColors.text_color}`);
+    expect(iconClassStyles.fill).toBe(`#${customColors.icon_color}`);
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#252525"
+    );
+  });
+
+  it("should render archive badge if repo is archived", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      isArchived: true,
+    });
+
+    expect(queryByTestId(document.body, "archive-badge")).toHaveTextContent(
+      "Archived"
+    );
+  });
+
+  it("should not render star count or fork count if either of the are zero", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      stargazers: { totalCount: 0 },
+    });
+
+    expect(queryByTestId(document.body, "stargazers")).toBeNull();
+    expect(queryByTestId(document.body, "forkcount")).toBeDefined();
+
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      stargazers: { totalCount: 1 },
+      forkCount: 0,
+    });
+
+    expect(queryByTestId(document.body, "stargazers")).toBeDefined();
+    expect(queryByTestId(document.body, "forkcount")).toBeNull();
+    
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      stargazers: { totalCount: 0 },
+      forkCount: 0,
+    });
+
+    expect(queryByTestId(document.body, "stargazers")).toBeNull();
+    expect(queryByTestId(document.body, "forkcount")).toBeNull();
+  });
+});

tests/renderStatsCard.test.js

@@ -0,0 +1,165 @@
+require("@testing-library/jest-dom");
+const cssToObject = require("css-to-object");
+const renderStatsCard = require("../src/renderStatsCard");
+
+const {
+  getByTestId,
+  queryByTestId,
+  queryAllByTestId,
+} = require("@testing-library/dom");
+
+describe("Test renderStatsCard", () => {
+  const stats = {
+    name: "Anurag Hazra",
+    totalStars: 100,
+    totalCommits: 200,
+    totalIssues: 300,
+    totalPRs: 400,
+    contributedTo: 500,
+    rank: { level: "A+", score: 40 },
+  };
+
+  it("should render correctly", () => {
+    document.body.innerHTML = renderStatsCard(stats);
+
+    expect(document.getElementsByClassName("header")[0].textContent).toBe(
+      "Anurag Hazra's GitHub Stats"
+    );
+
+    expect(
+      document.body.getElementsByTagName("svg")[0].getAttribute("height")
+    ).toBe("195");
+    expect(getByTestId(document.body, "stars").textContent).toBe("100");
+    expect(getByTestId(document.body, "commits").textContent).toBe("200");
+    expect(getByTestId(document.body, "issues").textContent).toBe("300");
+    expect(getByTestId(document.body, "prs").textContent).toBe("400");
+    expect(getByTestId(document.body, "contribs").textContent).toBe("500");
+    expect(queryByTestId(document.body, "card-border")).toBeInTheDocument();
+    expect(queryByTestId(document.body, "rank-circle")).toBeInTheDocument();
+  });
+
+  it("should hide individual stats", () => {
+    document.body.innerHTML = renderStatsCard(stats, {
+      hide: "['issues', 'prs', 'contribs']",
+    });
+
+    expect(
+      document.body.getElementsByTagName("svg")[0].getAttribute("height")
+    ).toBe("150"); // height should be 150 because we clamped it.
+
+    expect(queryByTestId(document.body, "stars")).toBeDefined();
+    expect(queryByTestId(document.body, "commits")).toBeDefined();
+    expect(queryByTestId(document.body, "issues")).toBeNull();
+    expect(queryByTestId(document.body, "prs")).toBeNull();
+    expect(queryByTestId(document.body, "contribs")).toBeNull();
+  });
+
+  it("should hide_border", () => {
+    document.body.innerHTML = renderStatsCard(stats, { hide_border: true });
+
+    expect(queryByTestId(document.body, "card-border")).not.toBeInTheDocument();
+  });
+
+  it("should hide_rank", () => {
+    document.body.innerHTML = renderStatsCard(stats, { hide_rank: true });
+
+    expect(queryByTestId(document.body, "rank-circle")).not.toBeInTheDocument();
+  });
+
+  it("should render default colors properly", () => {
+    document.body.innerHTML = renderStatsCard(stats);
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.textContent);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".stat"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe("#2f80ed");
+    expect(statClassStyles.fill).toBe("#333");
+    expect(iconClassStyles.fill).toBe("#4c71f2");
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#FFFEFE"
+    );
+  });
+
+  it("should render custom colors properly", () => {
+    const customColors = {
+      title_color: "5a0",
+      icon_color: "1b998b",
+      text_color: "9991",
+      bg_color: "252525",
+    };
+
+    document.body.innerHTML = renderStatsCard(stats, { ...customColors });
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".stat"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe(`#${customColors.title_color}`);
+    expect(statClassStyles.fill).toBe(`#${customColors.text_color}`);
+    expect(iconClassStyles.fill).toBe(`#${customColors.icon_color}`);
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#252525"
+    );
+  });
+
+  it("should hide the title", () => {
+    document.body.innerHTML = renderStatsCard(stats, {
+      hide_title: true,
+    });
+
+    expect(document.getElementsByClassName("header")[0]).toBeUndefined();
+    expect(document.getElementsByTagName("svg")[0]).toHaveAttribute(
+      "height",
+      "165"
+    );
+    expect(queryByTestId(document.body, "card-body-content")).toHaveAttribute(
+      "transform",
+      "translate(0, -30)"
+    );
+  });
+
+  it("should not hide the title", () => {
+    document.body.innerHTML = renderStatsCard(stats, {});
+
+    expect(document.getElementsByClassName("header")[0]).toBeDefined();
+    expect(document.getElementsByTagName("svg")[0]).toHaveAttribute(
+      "height",
+      "195"
+    );
+    expect(queryByTestId(document.body, "card-body-content")).toHaveAttribute(
+      "transform",
+      "translate(0, 0)"
+    );
+  });
+
+  it("should render icons correctly", () => {
+    document.body.innerHTML = renderStatsCard(stats, {
+      show_icons: true,
+    });
+
+    expect(queryAllByTestId(document.body, "icon")[0]).toBeDefined();
+    expect(queryByTestId(document.body, "stars")).toBeDefined();
+    expect(
+      queryByTestId(document.body, "stars").previousElementSibling // the label
+    ).toHaveAttribute("x", "25");
+  });
+
+  it("should not have icons if show_icons is false", () => {
+    document.body.innerHTML = renderStatsCard(stats, { show_icons: false });
+
+    expect(queryAllByTestId(document.body, "icon")[0]).not.toBeDefined();
+    expect(queryByTestId(document.body, "stars")).toBeDefined();
+    expect(
+      queryByTestId(document.body, "stars").previousElementSibling // the label
+    ).not.toHaveAttribute("x");
+  });
+});

tests/retryer.test.js

@@ -0,0 +1,50 @@
+require("@testing-library/jest-dom");
+const retryer = require("../src/retryer");
+
+const fetcher = jest.fn((variables, token) => {
+  console.log(variables, token);
+  return new Promise((res, rej) => res({ data: "ok" }));
+});
+
+const fetcherFail = jest.fn(() => {
+  return new Promise((res, rej) =>
+    res({ data: { errors: [{ type: "RATE_LIMITED" }] } })
+  );
+});
+
+const fetcherFailOnSecondTry = jest.fn((_vars, _token, retries) => {
+  return new Promise((res, rej) => {
+    // faking rate limit
+    if (retries < 1) {
+      return res({ data: { errors: [{ type: "RATE_LIMITED" }] } });
+    }
+    return res({ data: "ok" });
+  });
+});
+
+describe("Test Retryer", () => {
+  it("retryer should return value and have zero retries on first try", async () => {
+    let res = await retryer(fetcher, {});
+
+    expect(fetcher).toBeCalledTimes(1);
+    expect(res).toStrictEqual({ data: "ok" });
+  });
+
+  it("retryer should return value and have 2 retries", async () => {
+    let res = await retryer(fetcherFailOnSecondTry, {});
+
+    expect(fetcherFailOnSecondTry).toBeCalledTimes(2);
+    expect(res).toStrictEqual({ data: "ok" });
+  });
+
+  it("retryer should throw error if maximum retries reached", async () => {
+    let res;
+
+    try {
+      res = await retryer(fetcherFail, {});
+    } catch (err) {
+      expect(fetcherFail).toBeCalledTimes(8);
+      expect(err.message).toBe("Maximum retries exceeded");
+    }
+  });
+});

tests/utils.test.js

@@ -0,0 +1,52 @@
+const {
+  kFormatter,
+  encodeHTML,
+  renderError,
+  FlexLayout,
+} = require("../src/utils");
+
+describe("Test utils.js", () => {
+  it("should test kFormatter", () => {
+    expect(kFormatter(1)).toBe(1);
+    expect(kFormatter(-1)).toBe(-1);
+    expect(kFormatter(500)).toBe(500);
+    expect(kFormatter(1000)).toBe("1k");
+    expect(kFormatter(10000)).toBe("10k");
+    expect(kFormatter(12345)).toBe("12.3k");
+    expect(kFormatter(9900000)).toBe("9900k");
+  });
+
+  it("should test encodeHTML", () => {
+    expect(encodeHTML(`<html>hello world<,.#4^&^@%!))`)).toBe(
+      "&#60;html&#62;hello world&#60;,.#4^&#38;^@%!))"
+    );
+  });
+
+  it("should test renderError", () => {
+    document.body.innerHTML = renderError("Something went wrong");
+    expect(document.getElementById("message").textContent).toBe(
+      "Something went wrong"
+    );
+  });
+
+  it("should test FlexLayout", () => {
+    const layout = FlexLayout({
+      items: ["<text>1</text>", "<text>2</text>"],
+      gap: 60,
+    }).join("");
+
+    expect(layout).toBe(
+      `<g transform=\"translate(0, 0)\"><text>1</text></g><g transform=\"translate(60, 0)\"><text>2</text></g>`
+    );
+
+    const columns = FlexLayout({
+      items: ["<text>1</text>", "<text>2</text>"],
+      gap: 60,
+      direction: "column",
+    }).join("");
+
+    expect(columns).toBe(
+      `<g transform=\"translate(0, 0)\"><text>1</text></g><g transform=\"translate(0, 60)\"><text>2</text></g>`
+    );
+  });
+});