#!/bin/bash

# something or other about android and tmux using PREFIX
#: "${PREFIX:=''}"
MY_ROOT=""
if [ -z "${PREFIX-}" ]; then
  MY_ROOT=""
else
  MY_ROOT="$PREFIX"
fi
# Not every platform has or needs sudo, gotta save them O(1)s...
sudo_cmd=""
((EUID)) && [[ -z "$ANDROID_ROOT" ]] && sudo_cmd="sudo"

###############################
#                             #
#         http_get            #
# boilerplate for curl / wget #
#                             #
###############################

# See https://git.daplie.com/Daplie/daplie-snippets/blob/master/bash/http-get.sh

http_get=""
http_opts=""
http_out=""

detect_http_get()
{
  if type -p curl >/dev/null 2>&1; then
    http_get="curl"
    http_opts="-fsSL"
    http_out="-o"
  elif type -p wget >/dev/null 2>&1; then
    http_get="wget"
    http_opts="--quiet"
    http_out="-O"
  else
    echo "Aborted, could not find curl or wget"
    return 7
  fi
}

dap_dl()
{
  $http_get $http_opts $http_out "$2" "$1"
  touch "$2"
}

dap_dl_bash()
{
  dap_url=$1
  #dap_args=$2
  rm -rf dap-tmp-runner.sh
  $http_get $http_opts $http_out dap-tmp-runner.sh "$dap_url"; bash dap-tmp-runner.sh; rm dap-tmp-runner.sh
}

detect_http_get

## END HTTP_GET ##



###################
#                 #
# Install service #
#                 #
###################

my_app_name=goldilocks
my_app_pkg_name=com.daplie.goldilocks.web
my_app_dir=$(mktemp -d)
installer_base="https://git.daplie.com/Daplie/goldilocks.js/raw/master"

my_app_etc_config="etc/${my_app_name}/${my_app_name}.yml"
my_app_etc_example_config="etc/${my_app_name}/${my_app_name}.example.yml"
my_app_systemd_service="etc/systemd/system/${my_app_name}.service"
my_app_systemd_tmpfiles="etc/tmpfiles.d/${my_app_name}.conf"
my_app_launchd_service="Library/LaunchDaemons/${my_app_pkg_name}.plist"

install_for_systemd()
{
  echo ""
  echo "Installing as systemd service"
  echo ""
  mkdir -p $(dirname "$my_app_dir/$my_app_systemd_service")
  dap_dl "$installer_base/$my_app_systemd_service" "$my_app_dir/$my_app_systemd_service"
  $sudo_cmd mv "$my_app_dir/$my_app_systemd_service" "$MY_ROOT/$my_app_systemd_service"
  $sudo_cmd chown -R root:root "$MY_ROOT/$my_app_systemd_service"
  $sudo_cmd chmod 644 "$MY_ROOT/$my_app_systemd_service"

  mkdir -p $(dirname "$my_app_dir/$my_app_systemd_tmpfiles")
  dap_dl "$installer_base/$my_app_systemd_tmpfiles" "$my_app_dir/$my_app_systemd_tmpfiles"
  $sudo_cmd mv "$my_app_dir/$my_app_systemd_tmpfiles" "$MY_ROOT/$my_app_systemd_tmpfiles"
  $sudo_cmd chown -R root:root "$MY_ROOT/$my_app_systemd_tmpfiles"
  $sudo_cmd chmod 644 "$MY_ROOT/$my_app_systemd_tmpfiles"

  $sudo_cmd systemctl stop "${my_app_name}.service" >/dev/null 2>/dev/null
  $sudo_cmd systemctl daemon-reload
  $sudo_cmd systemctl start "${my_app_name}.service"
  $sudo_cmd systemctl enable "${my_app_name}.service"

  echo "$my_app_name started with systemctl, check its status like so"
  echo "  $sudo_cmd systemctl status $my_app_name"
  echo "  $sudo_cmd journalctl -xe -u goldilocks"
}

install_for_launchd()
{
  echo ""
  echo "Installing as launchd service"
  echo ""
  # See http://www.launchd.info/
  mkdir -p $(dirname "$my_app_dir/$my_app_launchd_service")
  dap_dl "$installer_base/$my_app_launchd_service" "$my_app_dir/$my_app_launchd_service"
  $sudo_cmd mv "$my_app_dir/$my_app_launchd_service" "$MY_ROOT/$my_app_launchd_service"
  $sudo_cmd chown root:wheel "$MY_ROOT/$my_app_launchd_service"
  $sudo_cmd chmod 0644 "$MY_ROOT/$my_app_launchd_service"
  $sudo_cmd launchctl unload -w "$MY_ROOT/$my_app_launchd_service" >/dev/null 2>/dev/null
  $sudo_cmd launchctl load -w "$MY_ROOT/$my_app_launchd_service"

  echo "$my_app_name started with launchd"
}

install_etc_config()
{
  $sudo_cmd mkdir -p $(dirname "$MY_ROOT/$my_app_etc_example_config")
  mkdir -p $(dirname "$my_app_dir/$my_app_etc_example_config")
  dap_dl "$installer_base/$my_app_etc_example_config" "$my_app_dir/$my_app_etc_example_config"
  $sudo_cmd mv "$my_app_dir/$my_app_etc_example_config" "$MY_ROOT/$my_app_etc_example_config"

  if [ ! -e "$MY_ROOT/$my_app_etc_config" ]; then
    $sudo_cmd mkdir -p $(dirname "$MY_ROOT/$my_app_etc_config")
    mkdir -p $(dirname "$my_app_dir/$my_app_etc_config")
    dap_dl "$installer_base/$my_app_etc_config" "$my_app_dir/$my_app_etc_config"
    $sudo_cmd mv "$my_app_dir/$my_app_etc_config" "$MY_ROOT/$my_app_etc_config"
  fi

  # OS X
  $sudo_cmd chown -R _www:_www $(dirname "$MY_ROOT/$my_app_etc_config") || true
  # Linux
  $sudo_cmd chown -R www-data:www-data $(dirname "$MY_ROOT/$my_app_etc_config") || true
  $sudo_cmd chmod 775 $(dirname "$MY_ROOT/$my_app_etc_config")
  $sudo_cmd chmod 664 "$MY_ROOT/$my_app_etc_config"
}

install_service()
{
  install_etc_config

  installable=""
  if [ -d "$MY_ROOT/etc/systemd/system" ]; then
    install_for_systemd
    installable="true"
  fi
  if [ -d "/Library/LaunchDaemons" ]; then
    install_for_launchd
    installable="true"
  fi
  if [ -z "$installable" ]; then
    echo ""
    echo "Unknown system service init type. You must install as a system service manually."
    echo '(please file a bug with the output of "uname -a")'
    echo ""
  fi
}

## END SERVICE_INSTALL ##



set -e
set -u

# Install
# TODO install to tmp location, then move to /opt
export NODE_PATH=/opt/goldilocks/lib/node_modules
export NPM_CONFIG_PREFIX=/opt/goldilocks
$sudo_cmd mkdir -p /etc/goldilocks
$sudo_cmd mkdir -p /var/log/goldilocks
$sudo_cmd mkdir -p /srv/www
$sudo_cmd mkdir -p /var/www
$sudo_cmd mkdir -p /opt/goldilocks/{lib,bin,etc}

# Dependencies
dap_dl_bash "https://git.daplie.com/Daplie/node-install-script/raw/master/setup-min.sh"

# Change to user perms

# OS X or Linux
$sudo_cmd chown -R $(whoami) /opt/goldilocks/ || true

my_npm="$NPM_CONFIG_PREFIX/bin/npm"
$my_npm install -g npm@4
$my_npm install -g 'git+https://git@git.daplie.com/Daplie/goldilocks.js.git'
# Finish up with submodule
pushd /opt/goldilocks/lib/node_modules/goldilocks
bash ./update-packages.sh
popd

# Change to admin perms

# OS X
$sudo_cmd chown -R _www:_www /var/www /srv/www /opt/goldilocks || true
# Linux
$sudo_cmd chown -R www-data:www-data /var/www /srv/www /opt/goldilocks || true

# make sure the files are all read/write for the owner and group, and then set
# the setuid and setgid bits so that any files/directories created inside these
# directories have the same owner and group.
$sudo_cmd chmod -R ug+rwX /opt/goldilocks
find /opt/goldilocks -type d -exec $sudo_cmd chmod ug+s {} \;

# Uninstall
dap_dl "https://git.daplie.com/Daplie/goldilocks.js/raw/master/uninstall.sh" "./goldilocks-uninstall"
$sudo_cmd chmod 755 "./goldilocks-uninstall"
# OS X
$sudo_cmd chown root:wheel "./goldilocks-uninstall" || true
# Linux
$sudo_cmd chown root:root "./goldilocks-uninstall" || true
$sudo_cmd mv "./goldilocks-uninstall" "/usr/local/bin/uninstall-goldilocks"

# Install Service
install_service