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#!/bin/sh
post_install() {
  DOKKU_ROOT="/home/dokku"
  DOKKU_LIB_ROOT="/var/lib/dokku"

  sshcommand create dokku /usr/bin/dokku &>/dev/null

  (egrep -i "^docker" /etc/group || groupadd docker) &>/dev/null
  usermod -aG docker dokku

  echo "Setting up storage directories"
  mkdir -p ${DOKKU_LIB_ROOT}/data ${DOKKU_LIB_ROOT}/data/storage
  chown dokku:dokku ${DOKKU_LIB_ROOT}/data ${DOKKU_LIB_ROOT}/data/storage

  echo "Setting up plugin directories"
  # should be replaced by `plugn init`
  mkdir -p ${DOKKU_LIB_ROOT}/core-plugins/available ${DOKKU_LIB_ROOT}/plugins/available
  mkdir -p ${DOKKU_LIB_ROOT}/core-plugins/enabled ${DOKKU_LIB_ROOT}/plugins/enabled
  touch ${DOKKU_LIB_ROOT}/core-plugins/config.toml ${DOKKU_LIB_ROOT}/plugins/config.toml

  echo "Migrating old plugins"
  find ${DOKKU_LIB_ROOT}/plugins/ -mindepth 1 -maxdepth 1 -type d -printf '%f\n' | while read -r plugin; do
    if [ "$plugin" = "available" ] || [ "$plugin" = "enabled" ]; then
      continue
    elif [ -f ${DOKKU_LIB_ROOT}/plugins/$plugin/.core ]; then
      rm -rf ${DOKKU_LIB_ROOT}/plugins/$plugin
    elif [ ! -d ${DOKKU_LIB_ROOT}/plugins/available/$plugin ]; then
      mv ${DOKKU_LIB_ROOT}/plugins/$plugin ${DOKKU_LIB_ROOT}/plugins/available;
    fi
  done

  echo "Enabling all core plugins"
  find ${DOKKU_LIB_ROOT}/core-plugins/available -mindepth 1 -maxdepth 1 -type d -printf '%f\n' | while read -r plugin; do
    if [ ! -d ${DOKKU_LIB_ROOT}/plugins/available/$plugin ]; then
      ln -s ${DOKKU_LIB_ROOT}/core-plugins/available/$plugin ${DOKKU_LIB_ROOT}/plugins/available/$plugin;
      PLUGIN_PATH=${DOKKU_LIB_ROOT}/core-plugins plugn enable $plugin
      PLUGIN_PATH=${DOKKU_LIB_ROOT}/plugins plugn enable $plugin
    fi
  done
  find -L ${DOKKU_LIB_ROOT} -type l -delete
  chown dokku:dokku -R ${DOKKU_LIB_ROOT}/plugins ${DOKKU_LIB_ROOT}/core-plugins

  echo "Ensure proper sshcommand path"
  echo '/usr/bin/dokku' > "${DOKKU_ROOT}/.sshcommand"
  mkdir -p ${DOKKU_ROOT}/.ssh
  if [[ -f .ssh/authorized_keys ]]; then
    sed -i.bak 's#/usr/local/bin/dokku#/usr/bin/dokku#' "${DOKKU_ROOT}/.ssh/authorized_keys"
    rm "${DOKKU_ROOT}/.ssh/authorized_keys"
  fi

  echo "Install all core plugins"
  dokku plugin:install --core

  echo "$1" | cut -d "-" -f 1 > ${DOKKU_LIB_ROOT}/VERSION
  
  hostname -f > "${DOKKU_ROOT}/HOSTNAME"

  mkdir -p /etc/nginx/conf.d
  echo "%dokku ALL=(ALL) NOPASSWD:/usr/bin/systemctl reload nginx, /usr/sbin/nginx -t" > /etc/sudoers.d/dokku-nginx

  echo "
    Please add your ssh pubkey like:
      $ cat ~/.ssh/id_rsa.pub | sudo sshcommand acl-add dokku default

    To enable nginx autoconfiguration, add to your /etc/nginx/nginx.conf in http section:
      include /etc/nginx/conf.d/*.conf;
    And reload nginx:
      $ sudo systemctl reload nginx
  "
}

post_upgrade() {
  post_install $1
}

post_remove() {
  rm -f /etc/init/dokku-installer.conf
  rm -f /etc/init/dokku-redeploy.conf
  rm -f /etc/systemd/system/dokku-installer.conf
  rm -f /etc/systemd/system/dokku-redeploy.service
  rm -f /etc/update-motd.d/99-dokku

  rm -rf /etc/nginx/conf.d/dokku.conf
  systemctl reload nginx

  rm -rf /var/lib/dokku
  rm -rf /var/log/dokku

  userdel -r dokku &>/dev/null
}