name: Preview builds

on:
  workflow_run:
    workflows: ["Java CI"]
    types:
      - completed

permissions:
  contents: read
  pull-requests: write

jobs:
  preview:
    if: ${{ github.repository_owner == 'Slimefun' && github.event.workflow_run.conclusion == 'success' }}
    name: Build and Publish the jar
    runs-on: ubuntu-latest

    steps:
      # Kinda jank way to grab the PR and run ID and then download the artifact
      # TODO: Move this code to our own mini-action
      - name: Grab PR & run ID and download the artifact
        uses: actions/github-script@v5
        with:
          script: |
            const allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
              owner: context.repo.owner,
              repo: context.repo.repo,
              run_id: context.payload.workflow_run.id,
            });

            for (const artifact of allArtifacts.data.artifacts) {
              // Extract the PR number from the artifact name
              const match = /^slimefun-(\d+)$/.exec(artifact.name);
              if (match) {
                require("fs").appendFileSync(
                  process.env.GITHUB_ENV,
                  `\nWORKFLOW_PR_ID=${match[1]}` +
                    `\nWORKFLOW_RUN_ID=${context.payload.workflow_run.id}`
                );

                const download = await github.rest.actions.downloadArtifact({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  artifact_id: artifact.id,
                  archive_format: 'zip',
                });
                require('fs').writeFileSync(`${process.env.GITHUB_WORKSPACE}/preview.zip`, Buffer.from(download.data))

                break;
              }
            }

      # Unzip the artifact
      - name: Unzip
        run: |
          unzip preview.zip
          rm preview.zip
          mv 'Slimefun v4.9-UNOFFICIAL.jar' preview.jar

      - name: Upload to preview service
        run: |
          curl -v -X POST \
            -H 'Authorization: ${{ secrets.PUBLISH_TOKEN }}' \
            -H "X-Checksum: $(sha256sum 'preview.jar' | awk '{print $1}')" \
            --data-binary '@preview.jar' \
            https://preview-builds.walshy.dev/upload/Slimefun/${{ env.WORKFLOW_PR_ID }}/${{ env.WORKFLOW_RUN_ID }}

      - name: Post comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          number: ${{ env.WORKFLOW_PR_ID }}
          message: |
            ### Slimefun preview build

            A Slimefun preview build is available for testing!

            https://preview-builds.walshy.dev/download/Slimefun/${{ env.WORKFLOW_PR_ID }}/${{ env.WORKFLOW_RUN_ID }}

            > **Note**: This is not a supported build and is only here for the purposes of testing.
            > Do not run this on a live server and do not report bugs anywhere but this PR!