#! /bin/sh
# postinst script for gitlab
# copied from postinst script for hplip
# $Id: hplip.postinst,v 1.1 2005/10/15 21:39:04 hmh Exp $
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.


case "$1" in
  configure)
    # Show debconf questions
    . /usr/share/debconf/confmodule

    # Read and export debian specific configuration
    # Only exported variables will be passed on to gitlab app
    gitlab_debian_conf=/etc/gitlab/gitlab-debian.conf
    export $(cat ${gitlab_debian_conf}|xargs)

    # Create gitlab user
    . /usr/lib/gitlab/scripts/adduser.sh

    gitlab_repo_path=${gitlab_data_dir}/repositories
    gitlab_uploads_path=${gitlab_data_dir}/uploads

    # Create directories and change ownership
    for i in ${gitlab_repo_path} ${gitlab_uploads_path} ${gitlab_pid_path}\
    ${gitlab_log_dir} ${gitlab_shell_log}; do
      mkdir -p $i
      chown -R ${gitlab_user}: $i
    done
    
    # Customize permissions
    chmod -R ug+rwX,o-rwx ${gitlab_repo_path}/
    chmod -R ug-s ${gitlab_repo_path}/
    find ${gitlab_repo_path}/ -type d -print0 | xargs -0 chmod g+s
    for i in ${gitlab_home} ${gitlab_data_dir} ${gitlab_shell_root}; do
      chown -R ${gitlab_user}: $i
    done

    su ${gitlab_user} -s /bin/sh -c "chmod 750 ${gitlab_uploads_path}"
    su ${gitlab_user} -s /bin/sh -c "mkdir -p ${gitlab_pid_path}/pids"
    su ${gitlab_user} -s /bin/sh -c "mkdir -p ${gitlab_pid_path}/sockets"
    su ${gitlab_user} -s /bin/sh -c 'git config --global core.autocrlf "input"'

    # Commands below needs to be run from gitlab_home
    cd ${gitlab_home}

    # Obtain hostname from debconf db
    db_get gitlab/fqdn
    if [ "${RET}" != "" ]; then
      if ! grep GITLAB_HOST ${gitlab_debian_conf}; then
        export GITLAB_HOST=${RET} # We need this to configure nginx below
	echo GITLAB_HOST=${RET} >> ${gitlab_debian_conf}
	echo GITLAB_EMAIL_FROM="no-reply@${RET}" >> ${gitlab_debian_conf}
	echo GITLAB_EMAIL_DISPLAY_NAME="Gitlab" >> ${gitlab_debian_conf}
	echo GITLAB_EMAIL_REPLY_TO="no-reply@${RET}" >> ${gitlab_debian_conf}
      fi

      # Check if ssl option is selected
      db_get gitlab/ssl
      if [ "${RET}" = "true" ]; then
        if ! grep GITLAB_HTTPS ${gitlab_debian_conf}; then
	  echo GITLAB_HTTPS=${RET} >> ${gitlab_debian_conf}
	fi
        mkdir -p /etc/gitlab/ssl
        if [ -f "${nginx_ssl_conf_example_gz}" ]; then
          # undo dh_installdocs auto compress
	  export nginx_conf_example_tmp=$(mktemp)
	  zcat ${nginx_ssl_conf_example_gz} > ${nginx_conf_example_tmp}
	  export nginx_conf_example=${nginx_conf_example_tmp}
	fi

        # Check if letsencrypt option is selected
        db_get gitlab/letsencrypt
        if [ "${RET}" = "true" ]; then
          ln -sf /etc/letsencrypt/live/${GITLAB_HOST}/fullchain.pem \
          /etc/gitlab/ssl/gitlab.crt
          ln -sf /etc/letsencrypt/live/${GITLAB_HOST}/privkey.pem \
          /etc/gitlab/ssl/gitlab.key
	  # Port 80 and 443 should be available for letsencrypt
	  invoke-rc.d nginx stop
	  letsencrypt -d ${GITLAB_HOST} certonly
        fi
      fi

      if test -f ${nginx_conf_example}; then
        sed -e "s/YOUR_SERVER_FQDN/${GITLAB_HOST}/"\
        ${nginx_conf_example} >/etc/nginx/sites-available/${GITLAB_HOST}
        ln -fs /etc/nginx/sites-available/${GITLAB_HOST} /etc/nginx/sites-enabled/
        rm -f ${nginx_conf_example_tmp}
      else
        echo "nginx example configuration file not found"
        exit 1
      fi
      # Start nginx
      invoke-rc.d nginx start
    else
      echo "Failed to retrieve fully qualified domain name"
      exit 1
    fi
    db_stop

    echo "Create database if not present"
    if ! su postgres -s /bin/sh -c "psql  gitlab_production -c ''"; then
      su postgres -c 'createdb gitlab_production'
    fi

    # Adjust database privileges
    . /usr/lib/gitlab/scripts/grantpriv.sh

    # Remove Gemfile.lock if present
    rm -f ${gtilab_home}/Gemfile.lock

    echo "Verifying we have all required libraries..."
    su ${gitlab_user} -s /bin/sh -c 'bundle install --local'
        
    echo "Running final rake tasks..."
    . /usr/lib/gitlab/scripts/rake-tasks.sh

           
    ;;

  abort-upgrade|abort-remove|abort-deconfigure)
    ;;

  *)
    echo "postinst called with unknown argument \`$1'" >&2
    exit 1
    ;;
esac

#DEBHELPER#

exit 0