#!/bin/bash

set -e
set -u

# 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"
}

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 #
#                 #
###################

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()
{
  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

  $sudo_cmd chown -R www-data:www-data $(dirname "$MY_ROOT/$my_app_etc_config")
  $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 ##

# Create dirs, set perms
create_skeleton()
{
  $sudo_cmd mkdir -p /srv/www
  $sudo_cmd mkdir -p /var/log/$my_app_name
  $sudo_cmd mkdir -p /etc/$my_app_name
  $sudo_cmd mkdir -p /var/$my_app_name
  $sudo_cmd mkdir -p /srv/$my_app_name
  $sudo_cmd mkdir -p /opt/$my_app_name
}

# Unistall
install_uninstaller()
{
  dap_dl "https://git.daplie.com/Daplie/walnut.js/raw/master/uninstall.sh" "./walnut-uninstall"
  $sudo_cmd chmod 755 "./walnut-uninstall"
  $sudo_cmd chown root:root "./walnut-uninstall"
  $sudo_cmd mv "./walnut-uninstall" "/usr/local/bin/uninstall-walnut"
}


# Dependencies
dap_dl_bash "https://git.daplie.com/coolaj86/node-install-script/raw/master/setup-min.sh"

# Install
# npm install -g 'git+https://git@git.daplie.com/Daplie/walnut.js.git#fs-nosql'

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

my_app_etc_config="etc/${my_app_name}/${my_app_name}.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
#git clone git@git.daplie.com:Daplie/walnut.js.git
#git clone https://git.daplie.com/Daplie/walnut.js.git /srv/walnut/core
sudo mkdir -p /srv/walnut/{core,lib,etc,config,node_modules}
ln -sf ../node_modules /srv/walnut/core/node_modules
sudo mkdir -p /srv/walnut/etc/org.oauth3.consumer
sudo mkdir -p /srv/walnut/etc/org.oauth3.provider
sudo mkdir -p /srv/walnut/packages/{api,pages,services}
sudo chown -R $(whoami):$(whoami) /srv/walnut

pushd /srv/walnut/core
  npm install
popd

create_skeleton
install_uninstaller
install_service