action.yml

name: Setup PostgreSQL for Linux/macOS/Windows
author: Ihor Kalnytskyi
description: Setup a preinstalled PostgreSQL server.
branding:
  icon: database
  color: purple
inputs:
  username:
    description: The username of the user to setup.
    default: postgres
    required: false
  password:
    description: The password of the user to setup.
    default: postgres
    required: false
  database:
    description: The database name to setup and grant permissions to created user.
    default: postgres
    required: false
outputs:
  connection-uri:
    description: The connection URI to connect to PostgreSQL.
    value: ${{ steps.connection-uri.outputs.value }}
runs:
  using: composite
  steps:
    - name: Prerequisites
      run: |
        if [ "$RUNNER_OS" == "Linux" ]; then
          echo "$(pg_config --bindir)" >> $GITHUB_PATH
        elif [ "$RUNNER_OS" == "Windows" ]; then
          echo "$PGBIN" >> $GITHUB_PATH
          echo "PQ_LIB_DIR=$PGROOT\lib" >> $GITHUB_ENV
        fi
      shell: bash


    - name: Setup and start PostgreSQL
      run: |
        export PGDATA="$RUNNER_TEMP/pgdata"
        pg_ctl init

        # Forbid creating unix sockets since they are created by default in the
        # directory we don't have permissions to.
        echo "unix_socket_directories = ''" >> "$PGDATA/postgresql.conf"
        pg_ctl start

        # Both PGHOST and PGUSER are used by PostgreSQL tooling such as 'psql'
        # or 'createuser'. Since PostgreSQL data has been resetup, we cannot
        # rely on defaults anymore.
        #
        # PGHOST is required for Linux and macOS since they default to unix
        # sockets, and we have turned them off.
        #
        # PGUSER is required for Windows since default the tooling's default
        # user is 'postgres', while 'pg_ctl init' creates one with the name of
        # the current user.
        echo "PGHOST=localhost" >> $GITHUB_ENV
        echo "PGUSER=${USER:-$USERNAME}" >> $GITHUB_ENV
      shell: bash

    - name: Setup PostgreSQL user and database
      run: |
        createuser --createdb ${{ inputs.username }}

        if [ "${{ inputs.database}}" != "postgres" ]; then
          createdb -O ${{ inputs.username }} ${{ inputs.database }}
        fi

        psql -c "ALTER USER ${{ inputs.username }} PASSWORD '${{ inputs.password }}';" ${{ inputs.database }}
      shell: bash

    - name: Expose connection URI
      run: |
        CONNECTION_URI="postgresql://${{ inputs.username }}:${{ inputs.password }}@localhost/${{ inputs.database }}"
        echo ::set-output name=value::$CONNECTION_URI
      shell: bash
      id: connection-uri