gh-pages.yaml

on:
  pull_request:

env:
  FLUTTER_VERSION: 3.16.5
  LIBOLM_VERSION: 3.2.16

name: Deploying on GitHub Pages

jobs:
  deploy_preview:
    name: Deploy preview versions on pull requests
    runs-on: ubuntu-latest
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
    permissions:
      deployments: write
      pull-requests: write
      contents: write

    environment:
      name: PR-${{ github.event.pull_request.number }}
      url: ${{ steps.configure.outputs.URL }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Flutter
        uses: subosito/flutter-action@v2
        with:
          flutter-version: ${{ env.FLUTTER_VERSION }}
          channel: "stable"
          cache: true
          cache-key: "flutter-:os:-:channel:-:version:-:arch:-:hash:-${{ hashFiles('**/pubspec.lock') }}"

      - uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ secrets.SSH_KEY }}

      - name: Setup Nix (to build libolm)
        uses: cachix/install-nix-action@v26

      - name: Build libolm
        run: |
          rm -rf assets/js
          nix build -v "gitlab:matrix-org/olm/$LIBOLM_VERSION?host=gitlab.matrix.org#javascript" -o assets/js
          sudo chmod 777 -R assets/js
          cd assets/js/ && mv javascript package

      - name: Build Web version
        env:
          FOLDER: ${{ github.event.pull_request.number }}
          TWAKE_PREVIEW_CONFIG: ${{ secrets.TWAKE_PREVIEW_CONFIG }}
        run: |
          flutter config --enable-web
          flutter clean
          flutter pub get
          flutter pub run build_runner build --delete-conflicting-outputs
          flutter build web --release --verbose --source-maps --base-href="/${GITHUB_REPOSITORY##*/}/$FOLDER/"
          echo "$TWAKE_PREVIEW_CONFIG" | yq '.issue_id = strenv(FOLDER)' > ./build/web/config.json

      - name: Configure environments
        id: configure
        env:
          FOLDER: ${{ github.event.pull_request.number }}
        run: |
          echo "URL=https://$GITHUB_REPOSITORY_OWNER.github.io/${GITHUB_REPOSITORY##*/}/$FOLDER" >> $GITHUB_OUTPUT

      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: build/web
          keep_files: true
          destination_dir: "${{ github.event.pull_request.number }}"

      - name: Find deployment comment
        uses: peter-evans/find-comment@v3
        id: fc
        with:
          comment-author: "github-actions[bot]"
          issue-number: ${{ github.event.pull_request.number }}
          body-includes: "This PR has been deployed to"

      - name: Create or update deployment comment
        uses: peter-evans/create-or-update-comment@v4
        with:
          comment-id: ${{ steps.fc.outputs.comment-id }}
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            This PR has been deployed to ${{ steps.configure.outputs.URL }}
          edit-mode: replace