Github workflow fixes

.github/workflows/deploy.yml

@@ -8,7 +8,16 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
+      # Set up Github actions, JDK & Gradle
       - uses: actions/checkout@v2
+      - name: Set up JDK 21
+        uses: actions/setup-java@v3
+        with:
+          java-version: 21
+          cache: gradle
+          distribution: temurin
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
 
       # Load the variables needed
       - name: Load gradle.properties into the environment
@@ -31,16 +40,8 @@ jobs:
         run: |
           echo "MOD_VERSION=$(echo "$GITHUB_RELEASE_TAG_NAME" | sed -E 's/-[^-]+$//')" >> $GITHUB_ENV
           echo "RELEASE_TYPE=$(echo "$GITHUB_RELEASE_TAG_NAME" | grep -oE '(alpha|beta)' || echo "release")" >> $GITHUB_ENV
-          {
-            echo "MOD_CHANGELOG_TRIMMED_DISCORD<<EOF"
-            echo "$(echo "$MOD_CHANGELOG" | sed '/## What'"'"'s Changed/d' | sed 's/## New Contributors/**New Contributors**/g' | sed -E 's/@([a-zA-Z0-9_]+)/`\@\1`/g' | sed -E 's|https://github.com/([^ ]+)/pull/([0-9]+)|[#\2](https://github.com/\1/pull/\2)|g' | sed -E 's|\*\*Full Changelog\*\*: (https://github.com/[^ ]+/compare/[^\s]+)|[Full Changelog](\1)|g' | sed -E ':a;N;$!ba;s/\r{0,1}\n/\\n/g' | sed 's/\\n\\n/\\n/g')"
-            echo "EOF"
-          } >> $GITHUB_ENV
-          {
-            echo "MOD_CHANGELOG_TRIMMED_PUBLISH<<EOF"
-            echo "$(echo "$MOD_CHANGELOG" | sed -E 's/@([a-zA-Z0-9_]+)/`\@\1`/g' | sed -E 's|https://github.com/([^ ]+)/pull/([0-9]+)|[#\2](https://github.com/\1/pull/\2)|g' | sed -E 's|\*\*Full Changelog\*\*: (https://github.com/[^ ]+/compare/[^\s]+)|[Full Changelog](\1)|g')"
-            echo "EOF"
-          } >> $GITHUB_ENV
+      - name: Build changelog
+        run: ./gradlew buildChangelog
       - name: Finalize variables
         run: |
           echo "MOD_VERSION_SHORT=${MOD_VERSION%%-*}" >> $GITHUB_ENV
@@ -53,14 +54,6 @@ jobs:
           cat prepared_discord_message.json
 
       # Build the mod and publish it to ModMaven, CurseForge, and Modrinth
-      - name: Set up JDK 21
-        uses: actions/setup-java@v3
-        with:
-          java-version: 21
-          cache: gradle
-          distribution: temurin
-      - name: Grant execute permission for gradlew
-        run: chmod +x gradlew
       - name: Build with Gradle
         run: ./gradlew build
       - name: Publish to ModMaven

build.gradle

@@ -78,6 +78,62 @@ task sourceJar(type: Jar) {
     from "LICENSE"
 }
 
+static def trimChangelog(String changelog, int maxLength, boolean discordFormat) {
+    if(discordFormat) {
+        changelog = changelog.replaceAll(/## What's Changed\n/, '')
+
+        changelog = changelog.replaceAll(/## New Contributors/, '**New Contributors**')
+    }
+
+    changelog = changelog.replaceAll(/@([a-zA-Z0-9_]+)/, '`@$1`')
+
+    changelog = changelog.replaceAll(/https:\/\/github.com\/([^ ]+)\/pull\/([0-9]+)/, '[#\$2](https://github.com/\$1/pull/\$2)')
+
+    changelog = changelog.replaceAll(/\*\*Full Changelog\*\*: (https:\/\/github.com\/[^ ]+\/compare\/[^\s]+)/, '[Full Changelog](\$1)')
+
+    if(discordFormat) {
+        changelog = changelog.replaceAll(/\r?\n/, '\\\\n')
+        changelog = changelog.replaceAll(/\\\\n\\\\n/, '\\\\n')
+    }
+
+    if(maxLength > 0) {
+        def changelogLines = changelog.split('\\\\n')
+        def lastLine = changelogLines[-1]
+        def trimmedChangelog = []
+        def currentLength = lastLine.length()
+
+        for (int i = 0; i < changelogLines.size() - 1; i++) {
+            def line = changelogLines[i]
+            if (currentLength + line.length() + 2 + 5 > maxLength) {
+                trimmedChangelog << '...'
+                break
+            }
+            trimmedChangelog << line
+            currentLength += line.length() + 2
+        }
+
+        trimmedChangelog << lastLine
+
+        return trimmedChangelog.join('\\n')
+    } else {
+        return changelog
+    }
+}
+
+tasks.register('buildChangelog') {
+    doLast {
+        def githubEnvFile = new File(System.getenv("GITHUB_ENV"))
+
+        def changelog = System.getenv("MOD_CHANGELOG")
+
+        def changelogTrimmedDiscord = trimChangelog(changelog, 1024, true)
+        githubEnvFile.append("MOD_CHANGELOG_TRIMMED_DISCORD=${changelogTrimmedDiscord}\n")
+
+        def changelogTrimmedPublish = trimChangelog(changelog, 0, false)
+        githubEnvFile.append("MOD_CHANGELOG_TRIMMED_PUBLISH=${changelogTrimmedPublish}\n")
+    }
+}
+
 publishing {
     publications {
         mavenJava(MavenPublication) {