name: Schedule candidate release

on:
  # Scheduled for 10:00 PM PST
  schedule:
    - cron: "0 5 * * *"

  workflow_dispatch:
    inputs:
      release-commit:
        description: "Explicit commit to release at (overrides green commit check)"
        required: false
        default: ""

jobs:
  tag_release:
    name: "Tag candidate release"
    runs-on: ubuntu-20.04
    steps:
      - name: Checking out repository
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
        with:
          token: ${{ secrets.WRITE_ACCESS_TOKEN }}
          fetch-depth: 0

      - name: Checkout the most recent green commit
        id: last_green_commit
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if [ -z "${{ github.event.inputs.release-commit }}" ]; then
            release_commit="$(./build_tools/scripts/get_latest_green.sh)"
          else
            release_commit="${{ github.event.inputs.release-commit }}"
          fi
          git checkout "${release_commit}"
          echo "release-commit=${release_commit}" >> "${GITHUB_OUTPUT}"

      - name: Compute version
        run: |
          # common version + tag
          package_version="$(python3 build_tools/python_deploy/compute_common_version.py -rc)"
          tag_name="iree-${package_version}"
          echo "package_version=${package_version}" >> $GITHUB_ENV
          echo "tag_name=${tag_name}" >> $GITHUB_ENV

          # legacy package version (for iree-tools-{tf,tflite})
          legacy_package_version="$(printf '%(%Y%m%d)T.${{ github.run_number }}')"
          echo "legacy_package_version=${legacy_package_version}" >> $GITHUB_ENV

          # iree-compiler version
          compiler_package_version="$(python3 build_tools/python_deploy/compute_local_version.py compiler -rc)"
          echo "compiler_package_version=${compiler_package_version}" >> $GITHUB_ENV

          # iree-runtime version
          runtime_package_version="$(python3 build_tools/python_deploy/compute_local_version.py runtime -rc)"
          echo "runtime_package_version=${runtime_package_version}" >> $GITHUB_ENV

      - name: Updating candidate tag
        run: |
          git tag "${tag_name}"

      - name: Pushing changes
        run: git push origin "${tag_name}"

      - name: Create Release
        id: create_release
        uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1
        env:
          GITHUB_TOKEN: ${{ secrets.WRITE_ACCESS_TOKEN }}
        with:
          tag_name: ${{ env.tag_name }}
          release_name: iree candidate ${{ env.tag_name }}
          commitish: ${{ steps.last_green_commit.outputs.release-commit }}
          body: |
            Automatic candidate release of iree.
          draft: true
          prerelease: true

      - name: "Invoke workflow :: Build Release Packages"
        uses: benc-uk/workflow-dispatch@e2e5e9a103e331dad343f381a29e654aea3cf8fc # v1.2.4
        with:
          workflow: Build Release Packages
          token: ${{ secrets.WRITE_ACCESS_TOKEN }}
          ref: "${{ env.tag_name }}"
          inputs: |
            {
              "package_suffix": "",
              "legacy_package_version": "${{ env.legacy_package_version }}",
              "package_version": "${{ env.package_version }}",
              "compiler_package_version": "${{ env.compiler_package_version }}",
              "runtime_package_version": "${{ env.runtime_package_version }}",
              "release_id": "${{ steps.create_release.outputs.id }}",
              "commit": "${{ steps.last_green_commit.outputs.release-commit }}"
            }