name: install-postgresql
description: Install PostgreSQL on the GitHub actions runner and verify the installation.
author: tj-actions
inputs:
  postgresql_version: 
    description: 'Version of PostgreSQL. e.g 15'
    required: true

runs:
  using: 'composite'
  steps:
    - name: Get cache directory
      id: cache-dir
      run: |
        cache_dir=""
        if [[ "${{ runner.os }}" == "macOS" ]]; then
          cache_dir="$(brew --cache postgresql@${{ inputs.postgresql_version }})"
        elif [[ "${{ runner.os }}" == "Windows" ]]; then
          cache_dir="~\AppData\Local\Temp\chocolatey"
        fi
        echo "cache_dir=$cache_dir" >> "$GITHUB_OUTPUT"
      shell: bash

    - name: Cache
      uses: actions/cache@v3
      id: cache-postgresql
      if: steps.cache-dir.outputs.cache_dir != ''
      with:
        path: ${{ steps.cache-dir.outputs.cache_dir }}
        key: ${{ runner.os }}-postgresql-${{ inputs.postgresql_version }}
        restore-keys: |
          ${{ runner.os }}-postgresql-

    - run: |
        bash $GITHUB_ACTION_PATH/entrypoint.sh
      shell: bash
      # Skip if cache hit and it's on Windows
      if: |
        (
            runner.os == 'Windows' && steps.cache-postgresql.outputs.cache-hit != 'true'
        ) 
        ||
        ( 
            runner.os != 'Windows'
        )
      env:
        # INPUT_<VARIABLE_NAME> is not available in Composite run steps
        # https://github.community/t/input-variable-name-is-not-available-in-composite-run-steps/127611
        INPUT_POSTGRESQL_VERSION: ${{ inputs.postgresql_version }}

    - name: Verify PostgreSQL
      run: |
        # Check the postgresql version
        POSTGRESQL_VERSION=$(psql --version | awk '{print $3}')
        if [[ "$POSTGRESQL_VERSION" != "${{ inputs.postgresql_version }}."* ]]; then
          echo "PostgreSQL version $POSTGRESQL_VERSION does not match the expected version ${{ inputs.postgresql_version }}.*"
          exit 1
        fi
      shell: bash
branding:
  icon: hard-drive
  color: white