#!/bin/bash

function _silent_install() {
  install_path="/usr/local/bin"

  dir=$(dirname "$0")
  script=$1
  mod=$2

  install -C -v "$dir"/"$script" "$install_path"/
  if [ -n "$mod" ]; then
    chmod "$mod" "$install_path"/"$script"
  fi
}

function _install_helper_scripts() {
  dir=$(dirname "$0")

  # Scripts may not be available in PATH during bootstrap, so we manually copy scripts into /usr/local/bin/.
  _silent_install sm-helper-functions
  _silent_install sm-connect-ssh-proxy +x
  _silent_install sm-wait +x
  _silent_install sm-save-env +x
  _silent_install sm-init-ssm +x
  _silent_install sm-ssh-ide +x
  _silent_install sm-setup-ssh +x
}

function _is_centos() {
  command -v yum >/dev/null 2>&1
}

function _is_macos() {
  uname | grep ^Darwin >/dev/null
}

function _install_unzip() {
  if _is_macos; then
    :  # noop, should be already installed
  elif _is_centos; then
    sudo yum install -y unzip
  else
    sudo apt-get install -y --no-install-recommends unzip
  fi
}

function _install_aws_cli_linux() {
  curl -sS "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "/tmp/awscliv2.zip"
  unzip -o -q -d /tmp/ /tmp/awscliv2.zip
  sudo /tmp/aws/install --update
}

function _install_aws_cli_macos() {
  curl -sS "https://awscli.amazonaws.com/AWSCLIV2.pkg" -o "/tmp/AWSCLIV2.pkg"
  sudo installer -pkg /tmp/AWSCLIV2.pkg -target /
}

function _install_aws_cli() {
  echo "sagemaker-ssh-helper: Installing AWS CLI v2"
  which aws || echo "sagemaker-ssh-helper: No previous installation of AWS CLI detected"
  which pip >/dev/null 2>&1 && pip uninstall -y awscli

  # See: https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html
  if _is_macos; then
    _install_aws_cli_macos
  else
    _install_aws_cli_linux
  fi
}

function _install_ssm_agent_ubuntu() {
  curl -sS -o /tmp/amazon-ssm-agent.deb "https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/debian_amd64/amazon-ssm-agent.deb"
  dpkg -i /tmp/amazon-ssm-agent.deb
}

function _install_ssm_agent_centos() {
  yum install -y "https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm" \
    || echo "Already installed?"
}

function _install_ssm_agent() {
  echo "sagemaker-ssh-helper: Installing SSM Agent"
  # See https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-manual-agent-install.html
  if _is_centos; then
    _install_ssm_agent_centos
  else
    _install_ssm_agent_ubuntu
  fi
}

function _install_session_manager_plugin_ubuntu() {
  curl -sS "https://s3.amazonaws.com/session-manager-downloads/plugin/latest/ubuntu_64bit/session-manager-plugin.deb" \
    -o "/tmp/session-manager-plugin.deb"
  sudo dpkg -i /tmp/session-manager-plugin.deb
}

function _install_session_manager_plugin_centos() {
  sudo yum install -y "https://s3.amazonaws.com/session-manager-downloads/plugin/latest/linux_64bit/session-manager-plugin.rpm" \
    || echo "Already installed?"
}

function _install_session_manager_plugin_macos() {
  curl -sS "https://s3.amazonaws.com/session-manager-downloads/plugin/latest/mac/session-manager-plugin.pkg" \
    -o "/tmp/session-manager-plugin.pkg"
  sudo installer -pkg /tmp/session-manager-plugin.pkg -target /
  sudo rm -f /usr/local/bin/session-manager-plugin
  sudo ln -s /usr/local/sessionmanagerplugin/bin/session-manager-plugin /usr/local/bin/session-manager-plugin
}

function _install_session_manager_plugin() {
  # See https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager-working-with-install-plugin.html
  if _is_centos; then
    _install_session_manager_plugin_centos
  elif _is_macos; then
    _install_session_manager_plugin_macos
  else
    _install_session_manager_plugin_ubuntu
  fi
  session-manager-plugin
}



function _install_curl_ubuntu() {
  sudo apt-get install -y --no-install-recommends curl
}

function _install_curl_centos() {
  sudo yum install -y curl
}

function _install_curl() {
  if _is_macos; then
    :  # noop, should be already installed
  elif _is_centos; then
    _install_curl_centos
  else
    _install_curl_ubuntu
  fi
}

function _install_jq() {
  if _is_centos; then
    yum install -y jq
  else
    apt-get install -y --no-install-recommends jq
  fi
}

function _install_sudo() {
  if _is_centos; then
    yum install -y sudo
  else
    apt-get install -y --no-install-recommends sudo
  fi
}

# shellcheck disable=SC2001
function _print_sm_app_name() {
  sm_resource_metadata_json=$(tr -d "\n" < /opt/ml/metadata/resource-metadata.json)
  echo -n "$sm_resource_metadata_json" | sed -e 's/^.*"ResourceName":\"\([^"]*\)\".*$/\1/'
}

# shellcheck disable=SC2001
function _print_sm_domain_id() {
  sm_resource_metadata_json=$(tr -d "\n" < /opt/ml/metadata/resource-metadata.json)
  echo -n "$sm_resource_metadata_json" | sed -e 's/^.*"DomainId":\"\([^"]*\)\".*$/\1/'
}

# shellcheck disable=SC2001
function _print_sm_user_profile_name() {
  sm_resource_metadata_json=$(tr -d "\n" < /opt/ml/metadata/resource-metadata.json)
  echo -n "$sm_resource_metadata_json" | sed -e 's/^.*"UserProfileName":\"\([^"]*\)\".*$/\1/'
}

function _print_sm_studio_python() {
  SM_STUDIO_PYTHON=$(/opt/.sagemakerinternal/conda/bin/python -c \
      "from jupyter_client.kernelspec import KernelSpecManager; \
      print(KernelSpecManager().get_all_specs()['python3']['spec']['argv'][0])")
  echo -n "$SM_STUDIO_PYTHON"
}