build.yml

name: Build MagicSpells
# On push events to the "main" branch, this action builds the jar and uploads its artifact.
#
# When triggered on a PR, it will only run if the PR was opened, synced, or newly labelled "Build PR Jar".
# If the PR does not have the "Build PR Jar" label, the action will only build the jar; otherwise, it will also
# upload its artifact. Due to security, the "pr_comment" workflow will follow up to link it in the PR.
on:
  push:
    branches:
      - main
    paths-ignore:
      - factions/**
      - memory/**
      - shop/**
      - teams/**
      - towny/**
  pull_request:
    types:
      - labeled
      - synchronize
      - opened
      - reopened

jobs:
  build:
    name: Build
    if: |
      github.event_name == 'push' ||
      (github.event.action == 'labeled' && github.event.label.name == 'Build PR Jar') ||
      github.event.action != 'labeled'
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout project sources
        uses: actions/checkout@v4
        with:
          ref: ${{github.event.pull_request.head.sha || github.sha}}

      - name: Get commit hash
        id: hash
        run: echo "sha_short=$(git rev-parse --short ${{github.event.pull_request.head.sha || github.sha}})" >> $GITHUB_OUTPUT

      - name: Get version
        id: version
        run: echo "version=$(grep version gradle.properties | cut -d"=" -f2 | xargs)" >> $GITHUB_OUTPUT

      - name: Setup Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 21

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v4

      - name: Run build with Gradle Wrapper
        run: ./gradlew "-Pversion=${{steps.version.outputs.version}}-${{steps.hash.outputs.sha_short}}" core:build

      - name: Upload artifact
        if: github.event_name == 'push' || contains(github.event.pull_request.labels.*.name, 'Build PR Jar')
        id: artifact
        uses: actions/upload-artifact@v4
        with:
          name: MagicSpells-${{steps.version.outputs.version}}-${{steps.hash.outputs.sha_short}}
          if-no-files-found: error
          path: core/build/libs/MagicSpells*.jar