name: Publish website to Codeberg Pages
run-name: publish-dgnum.eu

on:
  push:
    branches:
      - master

jobs:
  publish:
    runs-on: native
    steps:
      - uses: actions/checkout@v3
        with:
          path: dgnum.eu

      - name: Build website
        run: |
          # Hack to set the cache in the working directory
          HOME="$GITHUB_WORKSPACE" nix-build dgnum.eu

      - name: Push new website
        run: |
          export HOME="$GITHUB_WORKSPACE"

          echo "[+] Using SSH_DEPLOY_KEY"

          # Setup deploy key
          DEPLOY_KEY_FILE="$HOME/.ssh/deploy_key"
          mkdir .ssh
          echo "${SSH_DEPLOY_KEY}" > "$DEPLOY_KEY_FILE"
          chmod 600 "$DEPLOY_KEY_FILE"

          # Setup known hosts
          KNOWN_HOSTS_FILE="$HOME/.ssh/known_hosts"
          ssh-keyscan -H codeberg.org > "$KNOWN_HOSTS_FILE"

          export GIT_SSH_COMMAND="ssh -i $DEPLOY_KEY_FILE -o UserKnownHostsFile=$KNOWN_HOSTS_FILE"
          GIT_CMD_REPOSITORY="git@codeberg.org:DGNum/$GIT_REPOSITORY.git"

          echo "[+] Cloning remote repository"
          git clone --single-branch --depth 1 --branch main "$GIT_CMD_REPOSITORY" "$GIT_REPOSITORY"

          git config --global user.email "$GIT_USER_EMAIL"
          git config --global user.name  "$GIT_USER_NAME"

          echo "[+] Updating assets"
          rm -r "$GIT_REPOSITORY"/*

          # Update assets
          cp -R --no-preserve=mode,ownership,timestamps result/* "$GIT_REPOSITORY/"
          cd "$GIT_REPOSITORY"

          echo "[+] Creating commit"
          ORIGIN_COMMIT="https://$GIT_ORIGIN_SERVER/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
          git add .
          git diff-index --quiet HEAD || git commit --message "Automatic pages update from $ORIGIN_COMMIT"

          echo "[+] Pushing update"
          git push "$GIT_CMD_REPOSITORY" --set-upstream main
        env:
          SSH_DEPLOY_KEY: ${{ secrets.SSH_DEPLOY_KEY }}
          GIT_REPOSITORY: pages
          GIT_USER_EMAIL: automated-update@dgnum.eu
          GIT_USER_NAME: Forgejo Action
          GIT_ORIGIN_SERVER: git.hubrecht.ovh