name: Release Paper

on:
  push:
    tags:
      - 'paper/v*'

jobs:
  validate:
    runs-on: ubuntu-24.04
    outputs:
      version: ${{ steps.get_version.outputs.version }}
      jar_name: ${{ steps.get_version.outputs.jar_name }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Extract version from tag and validate
        id: get_version
        run: |
          TAG_VERSION=${GITHUB_REF#refs/tags/paper/v}
          GRADLE_VERSION=$(grep '^paperVersion=' gradle.properties | cut -d'=' -f2)

          if [ "$TAG_VERSION" != "$GRADLE_VERSION" ]; then
            echo "Error: Tag version ($TAG_VERSION) does not match gradle.properties paperVersion ($GRADLE_VERSION)"
            exit 1
          fi

          echo "version=$TAG_VERSION" >> $GITHUB_OUTPUT
          echo "jar_name=LunaticChat-$TAG_VERSION.jar" >> $GITHUB_OUTPUT
          echo "Version validation passed: $TAG_VERSION"

      - name: Check if release already exists
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          TAG_NAME=${GITHUB_REF#refs/tags/}
          if gh release view "$TAG_NAME" &> /dev/null; then
            echo "Error: Release $TAG_NAME already exists"
            exit 1
          fi
          echo "Release validation passed: $TAG_NAME does not exist yet"

  build:
    runs-on: ubuntu-24.04
    needs: validate
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Setup Development Environment
        uses: jdx/mise-action@v4

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v6

      - name: Grant execute permission for gradlew
        run: chmod +x gradlew

      - name: Build Paper shadowJar
        run: ./gradlew :platform-paper:shadowJar --no-daemon

      - name: Upload build artifact
        uses: actions/upload-artifact@v7
        with:
          name: LunaticChat-paper-v${{ needs.validate.outputs.version }}
          path: platform-paper/build/libs/${{ needs.validate.outputs.jar_name }}
          retention-days: 90

  release:
    runs-on: ubuntu-24.04
    needs: [validate, build]
    permissions:
      contents: write
    env:
      MODRINTH_CHANNEL: release
      MODRINTH_PAPER_GAME_VERSIONS: "26.2.x"
      MODRINTH_MC_VERSION: "26.2"
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Download build artifact
        uses: actions/download-artifact@v8
        with:
          name: LunaticChat-paper-v${{ needs.validate.outputs.version }}
          path: platform-paper/build/libs

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          TAG_NAME=${GITHUB_REF#refs/tags/}
          VERSION=${{ needs.validate.outputs.version }}
          JAR_NAME=${{ needs.validate.outputs.jar_name }}

          # The notes point at the changelog on the documentation site rather than
          # repeating it here, so the release notes live in exactly one place.
          gh release create "$TAG_NAME" \
            "platform-paper/build/libs/$JAR_NAME" \
            --title "v${VERSION} (Paper/Folia)" \
            --draft \
            --notes "Release notes: [Paper/Folia v${VERSION}](https://lc.m1sk9.dev/changelog/paper/v${VERSION})"

      - name: Publish to Modrinth (Paper/Folia)
        uses: cloudnode-pro/modrinth-publish@8dc596b20b94959bf244180235d90729d05a674f # v2
        with:
          token: ${{ secrets.MODRINTH_TOKEN }}
          name: v${{ needs.validate.outputs.version }} (Paper/Folia v${{ env.MODRINTH_MC_VERSION }})
          project: ${{ secrets.MODRINTH_PROJECT_ID }}
          version: ${{ needs.validate.outputs.version }}
          channel: ${{ env.MODRINTH_CHANNEL }}
          changelog: |-
            Please refer to the [release notes](https://lc.m1sk9.dev/changelog/paper/v${{ needs.validate.outputs.version }}) for update details.
          loaders: |-
            paper
            folia
          game-versions: ${{ env.MODRINTH_PAPER_GAME_VERSIONS }}
          files: platform-paper/build/libs/${{ needs.validate.outputs.jar_name }}