Test automatically updating Paper API

Author: Saturn745

.github/workflows/main.yml

@@ -1,71 +1,102 @@
 name: CI
+
 on:
   push:
     branches:
       - main
   workflow_dispatch:
+  schedule:
+    - cron: '0 4 * * *'  # Runs daily at 04:00 UTC
+
 permissions:
   packages: write
   contents: write
 
 env:
-  STUBGEN_BUILD_NUM: 12
+  STUBGEN_BUILD_NUM: 13
+  MINECRAFT_VERSION: 1.21.5
   ADDITIONAL_DEFINITION_URLS: |
     https://raw.githubusercontent.com/LuaLink/LuaLinkV2/master/src/main/resources/lua/script.lua
     https://raw.githubusercontent.com/LuaLink/LuaLinkV2/master/src/main/resources/lua/scheduler.lua
   SOURCES_JAR_URLS: |
-    https://repo.papermc.io/repository/maven-public/io/papermc/paper/paper-api/1.21.5-no-moonrise-SNAPSHOT/paper-api-1.21.5-no-moonrise-20250328.181903-5-sources.jar
     https://repo.papermc.io/repository/maven-public/net/kyori/adventure-text-logger-slf4j/4.21.0/adventure-text-logger-slf4j-4.21.0-sources.jar
     https://repo.papermc.io/repository/maven-public/net/kyori/adventure-text-minimessage/4.11.0-SNAPSHOT/adventure-text-minimessage-4.11.0-20220309.063149-7-sources.jar
     https://repo.papermc.io/repository/maven-public/net/kyori/adventure-text-serializer-gson/4.21.0/adventure-text-serializer-gson-4.21.0-sources.jar
     https://repo.papermc.io/repository/maven-public/net/kyori/adventure-platform-bukkit/4.1.1-SNAPSHOT/adventure-platform-bukkit-4.1.1-20220228.221434-1.jar
     https://repo.papermc.io/repository/maven-public/net/kyori/adventure-api/4.21.0/adventure-api-4.21.0-sources.jar
+
 jobs:
   build:
     runs-on: ubuntu-latest
     if: "!contains(github.event.commits[0].message, '[ci-skip]')"
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      - uses: actions/checkout@v4
+
       - name: Set up JDK 21
-        uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4
+        uses: actions/setup-java@v4
         with:
           java-version: 21
           distribution: 'adopt'
+
       - name: Download LuaLink/LuaStubGen JAR
         run: |
-          # Download to a temporary location
           mkdir -p $RUNNER_TEMP/stubgen
           curl -L -o $RUNNER_TEMP/stubgen/LuaStubGen.jar https://github.com/LuaLink/LuaStubGen/releases/download/$STUBGEN_BUILD_NUM/LuaStubGen-1.0-SNAPSHOT-all.jar
+      
+      - name: Install xmllint
+        run: sudo apt-get update && sudo apt-get install -y libxml2-utils
+
+      - name: Resolve Paper API Snapshot Sources JAR
+        id: resolve-paper
+        run: |
+          METADATA_URL="https://repo.papermc.io/repository/maven-public/io/papermc/paper/paper-api/${MINECRAFT_VERSION}-R0.1-SNAPSHOT/maven-metadata.xml"
+          echo "Fetching metadata from $METADATA_URL"
+          curl -s "$METADATA_URL" -o metadata.xml
+
+          VERSION=$(xmllint --xpath "string(//snapshotVersion[classifier='sources']/value)" metadata.xml)
+          echo "Resolved version: $VERSION"
+
+          JAR_URL="https://repo.papermc.io/repository/maven-public/io/papermc/paper/paper-api/${MINECRAFT_VERSION}-R0.1-SNAPSHOT/paper-api-${VERSION}-sources.jar"
+          echo "Resolved JAR URL: $JAR_URL"
+
+          echo "PAPER_API_SOURCES_URL=$JAR_URL" >> $GITHUB_ENV
+
       - name: Download Source JARs
         run: |
-          # Download source JARs
           mkdir -p $RUNNER_TEMP/sources
-          IFS=$'\n'  # Split by newline to handle multiple URLs
+
+          # Download Paper API sources
+          curl -L -o $RUNNER_TEMP/sources/paper-api-sources.jar "$PAPER_API_SOURCES_URL"
+
+          # Download other JARs
+          IFS=$'\n'
           for url in $SOURCES_JAR_URLS; do
             filename=$(basename "$url")
             curl -L -o $RUNNER_TEMP/sources/"$filename" "$url"
           done
+
+      - name: Clean previous Paper definitions 
+        run: rm -rf library/paper
+
       - name: Generate Lua definitions
         run: |
-          # Generate Lua definitions
           mkdir -p library/paper
-          # Get a space separated list of JAR files from the downloaded source JARs
           jar_files=$(ls $RUNNER_TEMP/sources/*.jar | tr '\n' ' ')
           java -jar $RUNNER_TEMP/stubgen/LuaStubGen.jar --output-dir=library/paper $jar_files
+
       - name: Download additional definitions
         run: |
-          # Download additional definitions
           mkdir -p library/lualink
-          IFS=$'\n'  # Split by newline to handle multiple URLs
+          IFS=$'\n'
           for url in $ADDITIONAL_DEFINITION_URLS; do
             filename=$(basename "$url")
             curl -L -o library/lualink/"$filename" "$url"
           done
+
       - name: Commit and push changes
         run: |
-          # Commit and push changes
           git config --local user.name "GitHub Action"
-          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com" # Default GitHub Actions bot email
+          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git add library/paper
           git add library/lualink
           git commit -m "Update Lua definitions" || echo "No changes to commit"