name: Setup Bun
description: An internal version of the 'oven-sh/setup-bun' action.

inputs:
  bun-version:
    type: string
    description: "The version of bun to install: 'latest', 'canary', 'bun-v1.2.0', etc."
    default: latest
    required: false
  baseline:
    type: boolean
    description: "Whether to use the baseline version of bun."
    default: false
    required: false
  download-url:
    type: string
    description: "The base URL to download bun from."
    default: "https://pub-5e11e972747a44bf9aaf9394f185a982.r2.dev/releases"
    required: false

runs:
  using: composite
  steps:
    - name: Setup Bun
      shell: bash
      env:
        BUN_VERSION: ${{ inputs.bun-version }}
        BUN_BASELINE: ${{ inputs.baseline }}
        BUN_DOWNLOAD_URL: ${{ inputs.download-url }}
      run: |
        case "$(uname -s)" in
          Linux*)  os=linux;;
          Darwin*) os=darwin;;
          *)       os=windows;;
        esac
        case "$(uname -m)" in
          arm64 | aarch64)  arch=aarch64;;
          *)                arch=x64;;
        esac
        case "$BUN_BASELINE" in
          true | 1) target="bun-${os}-${arch}-baseline";;
          *)        target="bun-${os}-${arch}";;
        esac
        case "$BUN_VERSION" in
          latest) release="latest";;
          canary) release="canary";;
          *)      release="bun-v${BUN_VERSION}";;
        esac
        curl -LO "${BUN_DOWNLOAD_URL}/${release}/${target}.zip" --retry 5
        unzip "${target}.zip"
        mkdir -p "$RUNNER_TEMP/.bun/bin"
        mv "${target}"/bun* "$RUNNER_TEMP/.bun/bin/"
        chmod +x "$RUNNER_TEMP"/.bun/bin/*
        ln -fs "$RUNNER_TEMP/.bun/bin/bun" "$RUNNER_TEMP/.bun/bin/bunx"
        echo "$RUNNER_TEMP/.bun/bin" >> "$GITHUB_PATH"