name: Setup Flux CLI
description: A GitHub Action for running Flux commands
author: Stefan Prodan
branding:
  color: blue
  icon: command
inputs:
  version:
    description: "Flux version e.g. 0.8.0 (defaults to latest stable release)"
    required: false
  arch:
    description: "arch can be amd64, arm64 or arm"
    required: true
    default: "amd64"
  bindir:
    description: "Optional location of the Flux binary. Will not use sudo if set. Updates System Path."
    required: false
  token:
    description: "GitHub Token used to authentication against the API (generally only needed to prevent quota limit errors)"
    required: false
runs:
  using: composite
  steps:
    - name: "Download flux binary to tmp"
      shell: bash
      run: |
        ARCH=${{ inputs.arch }}
        VERSION=${{ inputs.version }}
        TOKEN=${{ inputs.token }}

        if [ -n $TOKEN ]; then
          TOKEN=(-H "Authorization: token $TOKEN")
        fi

        if [ -z $VERSION ]; then
          VERSION=$(curl https://api.github.com/repos/fluxcd/flux2/releases/latest -sL "${TOKEN[@]}" | grep tag_name | sed -E 's/.*"([^"]+)".*/\1/' | cut -c 2-)
        fi

        BIN_URL="https://github.com/fluxcd/flux2/releases/download/v${VERSION}/flux_${VERSION}_linux_${ARCH}.tar.gz"
        curl -sL ${BIN_URL} -o /tmp/flux.tar.gz
        mkdir -p /tmp/flux
        tar -C /tmp/flux/ -zxvf /tmp/flux.tar.gz
    - name: "Copy Flux binary to execute location"
      shell: bash
      run: |
        BINDIR=${{ inputs.bindir }}
        if [ -z $BINDIR ]; then
          sudo cp /tmp/flux/flux /usr/local/bin
        else
          cp /tmp/flux/flux "${BINDIR}"
          echo "${BINDIR}" >> $GITHUB_PATH
        fi
    - name: "Cleanup tmp"
      shell: bash
      run: |
        rm -rf /tmp/flux/ /tmp/flux.tar.gz
    - name: "Verify correct installation of binary"
      shell: bash
      run: |
        flux -v