hooks:
  before_code:
    - replace:
       filename: /etc/service/unicorn/run
       from: "# postgres"
       to: sv start postgres || exit 1

run:
  - exec: mkdir -p /shared/postgres_run
  - exec: chown postgres:postgres /shared/postgres_run
  - exec: chmod 775 /shared/postgres_run
  - exec: rm -fr /var/run/postgresql
  - exec: ln -s /shared/postgres_run /var/run/postgresql
  - exec: socat /dev/null UNIX-CONNECT:/shared/postgres_run/.s.PGSQL.5432 || exit 0 && echo postgres already running stop container ; exit 1
  - file:
     path: /etc/service/postgres/run
     chmod: "+x"
     contents: |
        #!/bin/sh
        exec 2>&1
        exec sudo -u postgres /usr/lib/postgresql/9.2/bin/postmaster -D /etc/postgresql/9.2/main

  - exec:
      cmd:
        - chown -R root /var/lib/postgresql/9.2/main
        - "[ ! -e /shared/postgres_data ] && install -d -m 0755 -o postgres -g postgres /shared/postgres_data && sudo -u postgres /usr/lib/postgresql/9.2/bin/initdb -D /shared/postgres_data || exit 0"
        - chown -R postgres:postgres /shared/postgres_data

  - replace:
      filename: "/etc/postgresql/9.2/main/postgresql.conf"
      from: "data_directory = '/var/lib/postgresql/9.2/main'"
      to: "data_directory = '/shared/postgres_data'"

  # listen on all interfaces
  - replace:
      filename: "/etc/postgresql/9.2/main/postgresql.conf"
      from: /#?listen_addresses *=.*/
      to: "listen_addresses = '*'"

  # Necessary to enable backups
  - exec:
      cmd:
        - install -d -m 0755 -o postgres -g postgres /shared/postgres_backup

  - replace:
      filename: "/etc/postgresql/9.2/main/postgresql.conf"
      from: /#?max_wal_senders *=.*/
      to: "max_wal_senders = 4"

  - replace:
      filename: "/etc/postgresql/9.2/main/postgresql.conf"
      from: /#?wal_level *=.*/
      to: "wal_level = hot_standby"

  - replace:
      filename: "/etc/postgresql/9.2/main/pg_hba.conf"
      from: /^#local +replication +postgres +peer$/
      to: "local replication postgres  peer"

  # allow all to connect in with md5 auth
  - replace:
      filename: "/etc/postgresql/9.2/main/pg_hba.conf"
      from: /^host.*all.*all.*127.*$/
      to: "host all all 0.0.0.0/0 md5"

  - exec:
      background: true
      cmd: "sudo -u postgres /usr/lib/postgresql/9.2/bin/postmaster -D /etc/postgresql/9.2/main"

  # give db a few secs to start up
  - exec: "sleep 5"

  - exec: sudo -u postgres createdb discourse || exit 0
  - exec:
      stdin: |
        create user discourse;
      cmd: sudo -u postgres psql discourse
      raise_on_fail: false

  - exec:
      stdin: |
        grant all privileges on database discourse to discourse;
      cmd: sudo -u postgres psql discourse
      raise_on_fail: false

  - exec: /bin/bash -c 'sudo -u postgres psql discourse <<< "alter schema public owner to discourse;"'
  - exec: /bin/bash -c 'sudo -u postgres psql discourse <<< "create extension if not exists hstore;"'
  - exec: /bin/bash -c 'sudo -u postgres psql discourse <<< "create extension if not exists pg_trgm;"'
  - exec:
      stdin: |
        update pg_database set encoding = pg_char_to_encoding('UTF8') where datname = 'discourse' AND encoding = pg_encoding_to_char('SQL_ASCII');
      cmd: sudo -u postgres psql discourse
      raise_on_fail: false

  - exec:
      hook: postgres
      cmd: "echo postgres installed!"