name: "Setup Trivy DB"
description: "Setup the trivy database, restoring from cache if available"
author: "Timo Behrendt <t.behrendt@t00n.de"
branding:
  icon: "database"
  color: "blue"

inputs:
  cache-dir:
    description: "Path to the Trivy cache directory (default: ${{runner.temp}}/trivy)"
    required: false
    default: "${{ runner.temp }}/trivy"

outputs:
  cache-dir:
    description: "Path to the Trivy cache directory"
    value: ${{ inputs.cache-dir }}

runs:
  using: "composite"
  steps:
    - id: current-date
      shell: bash
      run: |
        echo "current-date=$(date +%Y-%m-%d)" >> $GITHUB_OUTPUT
    - id: restore-db
      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
      with:
        path: ${{ inputs.cache-dir }}
        key: trivy-db-${{ steps.current-date.outputs.current-date }}
        restore-keys: |
          trivy-db-${{ steps.current-date.outputs.current-date }}
          trivy-db-
    - if: steps.restore-db.outputs.cache-hit != 'true'
      shell: bash
      run: trivy fs --download-db-only --cache-dir "${{ inputs.cache-dir }}"