action.yml

name: "Fly GitHub Deploy"
description: "Deploy to Fly from GitHub Actions"
branding:
  icon: "umbrella"
  color: "blue"
inputs:
  app:
    description: "The app name"
    default: ""
    required: false
  build-args:
    description: "Build time variables in the form of NAME=VALUE pairs"
    default: ""
    required: false
  fly-token:
    description: "Fly API token"
    required: true
  github-token:
    description: "The repo scoped token generated by GitHub Actions"
    required: false

runs:
  using: "composite"
  steps:
    - uses: actions/checkout@v4
    - uses: superfly/flyctl-actions/setup-flyctl@master

    - name: Lookup app hostname
      shell: bash
      run: |
        echo "FLY_HOSTNAME=$(flyctl status --json | jq -r '.Hostname')" >> $GITHUB_ENV
      env:
        FLY_API_TOKEN: "${{ inputs.fly-token }}"

    - name: Lookup app release version
      shell: bash
      run: |
        echo "FLY_RELEASE_VERSION=$(flyctl releases --json | jq 'max_by(.Version).Version')" >> $GITHUB_ENV
      env:
        FLY_API_TOKEN: "${{ inputs.fly-token }}"

    - name: Create deployment in GitHub
      if: ${{ inputs.github-token }}
      shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.github-token }}
      run: |
        deploymentId=$(jq -n "{
            \"ref\": \"${{ github.event.repository.default_branch }}\",\
            \"environment\": \"$FLY_HOSTNAME\",\
            \"description\": \"Fly deploy from GitHub Actions\",\
            \"required_contexts\": []\
          }" \
          | gh api repos/${{ github.repository }}/deployments \
            --method POST \
            --header "Accept: application/vnd.github.v3+json" \
            --input - \
            --jq '.id')
        echo 'DEPLOYMENT_ID='$deploymentId >> $GITHUB_ENV

    - name: Deploy to Fly
      shell: bash
      run: |
        flyctl deploy --remote-only \
          --ha=false \
          --app "${{ inputs.app }}" \
          --build-arg "${{ inputs.build-args }}" \
          --env RELEASE_COMMIT=$(git rev-parse --verify HEAD) \
          --env RELEASE_CREATED_AT=$(date --iso-8601=seconds) \
          --env RELEASE_VERSION="v$(( $FLY_RELEASE_VERSION + 1 ))"
      env:
        FLY_API_TOKEN: "${{ inputs.fly-token }}"

    - name: Create deployment status in GitHub
      if: ${{ inputs.github-token }}
      shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.github-token }}
      run: |
        gh api repos/${{ github.repository }}/deployments/$DEPLOYMENT_ID/statuses \
          --method POST \
          --header "Accept: application/vnd.github.v3+json" \
          --field state=success \
          --field log_url=https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }} \
          --field environment_url=https://$FLY_HOSTNAME