ci: auto-update kata progress (#478)

* ci: auto-update kata progress

* docs: update kata progress

Author: ParanoidUser

.github/workflows/progress.yml

@@ -0,0 +1,50 @@
+name: Update Progress
+
+on:
+  pull_request:
+    branches: [ main ]
+    types: [ opened, synchronize ]
+    paths:
+      - .github/workflows/progress.yml
+      - docs/README.md
+      - kata/**
+
+jobs:
+  update-progress:
+    runs-on: ubuntu-22.04
+    timeout-minutes: 1
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event.pull_request.head.ref }}
+
+      - name: Update README progress
+        run: |
+          TOTAL=$(curl https://www.codewars.com/kata/search/java | grep -Eo ".{5} Kata Found" | sed "s/[Kat Found,]//g")
+          COMPLETED=$(find ./kata -mindepth 2 -maxdepth 2 -not -empty -type d -not -path "./kata/retired/*" | wc -l)
+          PROGRESS=$(bc <<< "scale=1 ; 100 * $COMPLETED / $TOTAL")
+          sed -i -r "s/(completed%20kata-).*(%25-red.svg)/\1$PROGRESS\2/g" ./docs/README.md
+          echo "🎉 Current progress $PROGRESS% ($COMPLETED out of $TOTAL)" >> $GITHUB_STEP_SUMMARY
+
+      - name: Update README statistics
+        run: |
+          STATS="|"
+          for rank in ./kata/*; do
+            STATS+=" $(find $rank -mindepth 1 -maxdepth 1 -not -empty -type d | wc -l) |"
+          done
+          sed -i "28s/.*/$STATS/" ./docs/README.md
+
+      - name: Update Git repository
+        run: |
+          git config user.name "$(git log -n 1 --pretty=format:%an)"
+          git config user.email "$(git log -n 1 --pretty=format:%ae)"
+          git add -A
+          if ! git diff-index --quiet HEAD; then
+            git commit -m "docs: update kata progress"
+            git push
+            echo "☑️ Codewars progress has been updated." >> $GITHUB_STEP_SUMMARY
+          else
+            echo "✅ Codewars progress is up to date." >> $GITHUB_STEP_SUMMARY
+          fi

docs/README.md

@@ -1,7 +1,7 @@
 # Codewars Handbook ☕️🚀
 
 [![Views statistics +1 👀](https://img.shields.io/badge/dynamic/xml?color=success&label=views&query=//*[name()=%27text%27][3]&url=https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2FParanoidUser%2Fcodewars-handbook)](https://hits.seeyoufarm.com/api/count/graph/dailyhits.svg?url=https://github.com/ParanoidUser/codewars-handbook)
-[![Solved kata 👌](https://img.shields.io/badge/solved%20kata-1385-red.svg)](https://www.codewars.com/kata/search/java)
+[![Completed kata 👌](https://img.shields.io/badge/completed%20kata-68.6%25-red.svg)](https://www.codewars.com/kata/search/java?xids=completed)
 [![CI pipeline 🛠](https://img.shields.io/github/actions/workflow/status/ParanoidUser/codewars-handbook/build.yml?branch=main)](https://github.com/ParanoidUser/codewars-handbook/actions/workflows/build.yml)
 [![Quality gate 🔎](https://img.shields.io/sonar/alert_status/codewars-handbook?server=https%3A%2F%2Fsonarcloud.io)](https://sonarcloud.io/dashboard?id=codewars-handbook)
 [![Let's have a chat! 📞](https://img.shields.io/gitter/room/ParanoidUser/codewars-handbook?color=49c39e)](https://gitter.im/ParanoidUser/codewars-handbook)
@@ -25,7 +25,7 @@ slug.
 
 | [1 kyu](/kata/1-kyu/index.md) | [2 kyu](/kata/2-kyu/index.md) | [3 kyu](/kata/3-kyu/index.md) | [4 kyu](/kata/4-kyu/index.md) | [5 kyu](/kata/5-kyu/index.md) | [6 kyu](/kata/6-kyu/index.md) | [7 kyu](/kata/7-kyu/index.md) | [8 kyu](/kata/8-kyu/index.md) | [beta](/kata/beta/index.md) | [retired](/kata/retired/index.md) |
 |:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:---------------------------:|:---------------------------------:|
-|               -               |               1               |               2               |              26               |              42               |              416              |              559              |              205              |             55              |                79                 |
+| 0 | 1 | 2 | 26 | 42 | 416 | 559 | 205 | 55 | 79 |
 
 **Note:** The source code is written in Java 17 and may use language features that are incompatible
 with Java 8, 11.