#!/usr/bin/env bash

function install_node() {
  if nvm_installed; then
    install_node_via_nvm
  else
    install_node_via_package_manager
  fi
}

function install_and_setup_package_manager() {
  if is_macos; then
    install_homebrew_if_needed
    brew_tap "caskroom/cask"
  elif is_linux; then
    # Linux
    buildtools=(
      autoconf
      automake
      build-essential
      cmake
      curl
      g++
      libssl-dev
      libtool
      make
      python-dev
      wget
      unzip
    )

    for package in "${buildtools[@]}"; do
      apt_install "$package"
    done
  fi
}

function needs_java8_linux() {
  ! program_exists "java" || !(java -version 2>&1 | grep -q "1.8.0")
}

function install_java8() {
  if is_macos; then
    brew_cask_install "caskroom/versions/java8"
  elif is_linux; then
    if needs_java8_linux; then
      sudo su << EOF
       add-apt-repository ppa:webupd8team/java -y
       apt update
       echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
       apt install -y oracle-java8-installer
EOF
    else
      already_installed "java8"
    fi
  fi
}

function install_leiningen() {
  if is_macos; then
    brew_install leiningen
  elif is_linux; then
    install_leiningen_linux
  fi
}

function install_leiningen_linux() {
  local destination=/usr/bin/lein

  if ! program_exists "lein"; then
    cecho "@b@blue[[+ Installing lein...]]"

    sudo su << EOF
      curl --silent \
        https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein \
        -o $destination

      chmod 755 $destination

      cd $HOME && lein upgrade
EOF
  else
    already_installed "lein"
  fi
}

function install_watchman() {
  if is_macos; then
    brew_install watchman
  elif is_linux; then
    if ! program_exists "watchman"; then
      local current_dir=$(pwd)
      local clone_path="/tmp/watchman"

      git clone https://github.com/facebook/watchman.git $clone_path
      cd $clone_path
      git checkout v4.9.0
      ./autogen.sh && \
        ./configure && \
        make && \
        sudo make install

      cd "$current_dir"
    else
      already_installed "watchman"
    fi
  fi
}

function install_homebrew_if_needed() {
  ! is_macos && return 1

  if test ! $(which brew); then
    cecho "@b@blue[[+ Installing homebrew]]"

    ruby -e "$(curl -fsSL \
      https://raw.githubusercontent.com/Homebrew/install/master/install)"

    brew update
  else
    already_installed "Homebrew"
  fi
}

function install_android_sdk() {
  if is_macos; then
    brew_cask_install android-sdk
  elif is_linux; then
    install_android_sdk_linux
  fi
}

function install_android_sdk_linux() {
  cecho "@b@yellow[[+ Skipping Android SDK setup, not implemented on Linux]]"

  return 1
}

function install_maven() {
  brew_install maven
  apt_install maven
}

function install_react_native_cli() {
  cd "$(repo_path)"

  local npm_command="npm"

  if is_linux && ! nvm_installed; then
    # aptitude version of node requires sudo for global install
    npm_command="sudo npm"
  fi

  if npm list -g | grep -q react-native-cli; then
    already_installed "react-native-cli"
  else
    $npm_command install -g react-native-cli
  fi
}

function install_node_via_nvm() {
  local nvmrc="$(repo_path)/.nvmrc"

  cd "$(repo_path)"

  if [ ! -e "$nvmrc" ]; then
    cecho "@b@blue[[+ Installing latest stable Node version]]"

    nvm install stable
    echo stable > "$nvmrc"

    nvm use
  else
    nvm use >/dev/null

    local version=$(node -v)
    cecho "+ Node already installed ($version via NVM)... skipping."
  fi
}

function install_node_via_package_manager() {
  if ! program_exists "node"; then
    if is_macos; then
      brew_install node
    elif is_linux; then
      curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
      apt_update

      apt_install nodejs
    fi
  else
    cecho \
      "+ Node already installed ($(node -v) via package manager)... skipping."
  fi
}

function required_pod_version() {
  cat "$(repo_path)/ios/Podfile.lock" | grep "COCOAPODS: " | awk '{ print $2 }'
}

function correct_pod_version_is_installed() {
  ! program_exists "pod" && return 1

  [[ "$(required_pod_version)" == "$(pod --version)" ]]
}

function using_rvm() {
  program_exists "rvm"
}

function initialize_rvm() {
  cd "$(repo_path)"

  if [ ! -e "$(repo_path)/.ruby-version" ]; then
    rvm use --default > /dev/null
    echo "$(rvm current)" > .ruby-version
  fi

  rvm use . >/dev/null
}

function using_cocoapods() {
  is_macos
}

function install_cocoapods() {
  ! using_cocoapods && return 1

  local gem_command="sudo gem"
  local destination="system Ruby"

  if using_rvm; then
    initialize_rvm

    gem_command="gem"
    destination="RVM ($(rvm current))"
  fi

  if ! program_exists "pod"; then
    $gem_command install cocoapods
  elif ! correct_pod_version_is_installed; then
    local version=$(required_pod_version)

    cecho "@b@blue[[+ Updating to cocoapods $version]]"

    $gem_command uninstall cocoapods --ignore-dependencies --silent
    $gem_command install cocoapods -v "$version"
  else
    cecho "+ cocoapods already installed to $destination... skipping."
  fi
}

function dependency_setup() {
  cecho "@b@blue[[\$ $@]]"
  echo

  cd "$(repo_path)"
  eval "$@" || (cecho "@b@red[[Error running dependency install]]" && exit 1)

  echo
  echo "  + done"
  echo
}