name: setup-rusty-v8
description: Download and verify Codex-built rusty_v8 artifacts for Cargo builds.
inputs:
  target:
    description: Rust target triple with Codex-built V8 release artifacts.
    required: true

runs:
  using: composite
  steps:
    - name: Configure rusty_v8 artifact overrides and verify checksums
      shell: bash
      env:
        TARGET: ${{ inputs.target }}
      run: |
        set -euo pipefail

        version="$(python3 "${GITHUB_WORKSPACE}/.github/scripts/rusty_v8_bazel.py" resolved-v8-crate-version)"
        release_tag="rusty-v8-v${version}"
        base_url="https://github.com/openai/codex/releases/download/${release_tag}"
        binding_dir="${RUNNER_TEMP}/rusty_v8"
        archive_path="${binding_dir}/librusty_v8_release_${TARGET}.a.gz"
        binding_path="${binding_dir}/src_binding_release_${TARGET}.rs"
        checksums_path="${binding_dir}/rusty_v8_release_${TARGET}.sha256"

        mkdir -p "${binding_dir}"
        curl -fsSL "${base_url}/librusty_v8_release_${TARGET}.a.gz" -o "${archive_path}"
        curl -fsSL "${base_url}/src_binding_release_${TARGET}.rs" -o "${binding_path}"
        curl -fsSL "${base_url}/rusty_v8_release_${TARGET}.sha256" -o "${checksums_path}"

        if [[ "$(wc -l < "${checksums_path}")" -ne 2 ]]; then
          echo "Expected exactly two checksums for ${TARGET} in ${checksums_path}" >&2
          exit 1
        fi

        if command -v sha256sum >/dev/null 2>&1; then
          (cd "${binding_dir}" && sha256sum -c "${checksums_path}")
        else
          (cd "${binding_dir}" && shasum -a 256 -c "${checksums_path}")
        fi
        echo "RUSTY_V8_ARCHIVE=${archive_path}" >> "${GITHUB_ENV}"
        echo "RUSTY_V8_SRC_BINDING_PATH=${binding_path}" >> "${GITHUB_ENV}"