Create autoupdate.yaml

.github/workflows/autoupdate.yaml

@@ -0,0 +1,51 @@
+name: Autoupdate
+
+on:
+  # Triggers the workflow on push or pull request events but only for the "master" branch
+  push:
+    branches: [ "master" ]
+  schedule:
+    - cron: '30 2 * * *'  # Run once per day
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  unciv-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: oxipng image compression # This needs to be before the Unciv run since that packs images
+        run: | 
+          oxipng_url=$(curl -s https://api.github.com/repos/shssoichiro/oxipng/releases/latest | grep -o "http.*x86_64-unknown-linux-gnu.tar.gz")
+          wget -O oxipng.tar.gz $oxipng_url
+          tar -xvzf oxipng.tar.gz
+          rm oxipng.tar.gz
+          
+          # We're left with a folder named like "oxipng-9.1.2-x86_64-unknown-linux-gnu" which contains the actual executable
+          # So we find the file, run it on all png files in "Images" folders, and then delete the folder so it won't be a git diff
+          oxipng_file=$(find oxipng* | grep "/oxipng")
+          find Images* -type f -regex ".*png" | xargs -d '\n' $oxipng_file --opt max --strip all --alpha
+          rm -rf $(ls -1 | grep oxipng)
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: 17
+
+      # Runs a set of commands using the runners shell
+      - name: Autoupdate
+        continue-on-error: true  # We want to autoupdate even if there are errors
+        run: |
+          unciv_url=$(curl -s https://api.github.com/repos/yairm210/unciv/releases/latest | grep -o "http.*Unciv.jar")
+          wget -q -O Unciv.jar $unciv_url
+          java -jar Unciv.jar mod-ci
+
+      - name: Remove Unciv executable
+        run: rm Unciv.jar
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v6
+        with:
+          commit-message: Autoupdate