bootstrap

#!/usr/bin/env bash

# Ran once, during initial operating system setup (from fresh install of OS)
# primary tasks:
# 1. setup git config
# 2. install dotfiles
# 3. install homebrew if required

# set global var where this repo is located = DOTFILES_ROOT
DOTFILES_ROOT=$(pwd -P)

# Exit if any subcommand or pipeline returns a non-zero status.
set -e

echo ''

# Print Functions (mostly for color formating)
info () {
  printf "\r  [ \033[00;34m..\033[0m ] $1\n"
}

user () {
  printf "\r  [ \033[0;33m??\033[0m ] $1\n"
}

success () {
  printf "\r\033[2K  [ \033[00;32mOK\033[0m ] $1\n"
}

fail () {
  printf "\r\033[2K  [\033[0;31mFAIL\033[0m] $1\n"
  echo ''
  exit
}

print_result() {
    [ $1 -eq 0 ] \
    && print_success "$2" \
    || print_error "$2"

    [ "$3" == "true" ] && [ $1 -ne 0 ] \
    && exit
}

# some basic methods in case they are needed
answer_is_yes() {
    [[ "$REPLY" =~ ^[Yy]$ ]] \
    && return 0 \
    || return 1
}

ask() {
    print_question "$1"
    read
}

ask_for_confirmation() {
    print_question "$1 (y/n) "
    read -n 1
    printf "\n"
}

ask_for_sudo() {

    # Ask for the administrator password upfront
    sudo -v

    # Update existing `sudo` time stamp until this script has finished
    # https://gist.github.com/cowboy/3118588
    while true; do
        sudo -n true
        sleep 60
        kill -0 "$$" || exit
    done &> /dev/null &

}

cmd_exists() {
    [ -x "$(command -v "$1")" ] \
    && printf 0 \
    || printf 1
}

execute() {
    $1 &> /dev/null
    print_result $? "${2:-$1}"
}

get_answer() {
    printf "$REPLY"
}

get_os() {

    declare -r OS_NAME="$(uname -s)"
    local os=""

    if [ "$OS_NAME" == "Darwin" ]; then
        os="macos"
    elif [ "$OS_NAME" == "Linux" ] && [ -e "/etc/lsb-release" ]; then
        os="ubuntu"
    fi

    printf "%s" "$os"

}

is_git_repository() {
    [ "$(git rev-parse &>/dev/null; printf $?)" -eq 0 ] \
    && return 0 \
    || return 1
}

mkd() {
    if [ -n "$1" ]; then
        if [ -e "$1" ]; then
            if [ ! -d "$1" ]; then
                print_error "$1 - a file with the same name already exists!"
            else
                print_success "$1"
            fi
        else
            execute "mkdir -p $1" "$1"
        fi
    fi
}



# git Config
setup_gitconfig () {
  if ! [ -f mods/git/gitconfig.local.symlink ]
  then
    info 'setup gitconfig'

    git_credential='cache'
    if [ "$(uname -s)" == "Darwin" ]
    then
      git_credential='osxkeychain'
    fi

    user ' - What is your github author name?'
    read -e git_authorname
    user ' - What is your github author email?'
    read -e git_authoremail

    sed -e "s/AUTHORNAME/$git_authorname/g" -e "s/AUTHOREMAIL/$git_authoremail/g" -e "s/GIT_CREDENTIAL_HELPER/$git_credential/g" git/gitconfig.local.symlink.example > git/gitconfig.local.symlink

    success 'gitconfig'
  fi
}



link_file () {
  local src=$1 dst=$2

  local overwrite= backup= skip=
  local action=

  if [ -f "$dst" -o -d "$dst" -o -L "$dst" ]
  then

    if [ "$overwrite_all" == "false" ] && [ "$backup_all" == "false" ] && [ "$skip_all" == "false" ]
    then

      local currentSrc="$(readlink $dst)"

      if [ "$currentSrc" == "$src" ]
      then

        skip=true;

      else

        user "File already exists: $dst ($(basename "$src")), what do you want to do?\n\
        [s]kip, [S]kip all, [o]verwrite, [O]verwrite all, [b]ackup, [B]ackup all?"
        read -n 1 action

        case "$action" in
          o )
            overwrite=true;;
          O )
            overwrite_all=true;;
          b )
            backup=true;;
          B )
            backup_all=true;;
          s )
            skip=true;;
          S )
            skip_all=true;;
          * )
            ;;
        esac

      fi

    fi

    overwrite=${overwrite:-$overwrite_all}
    backup=${backup:-$backup_all}
    skip=${skip:-$skip_all}

    if [ "$overwrite" == "true" ]
    then
      rm -rf "$dst"
      success "removed $dst"
    fi

    if [ "$backup" == "true" ]
    then
      mv "$dst" "${dst}.backup"
      success "moved $dst to ${dst}.backup"
    fi

    if [ "$skip" == "true" ]
    then
      success "skipped $src"
    fi
  fi

  if [ "$skip" != "true" ]  # "false" or empty
  then
    ln -s "$1" "$2"
    success "linked $1 to $2"
  fi
}

install_dotfiles () {
  info 'installing dotfiles'

  local overwrite_all=false backup_all=false skip_all=false

  for src in $(find -H "$DOTFILES_ROOT" -maxdepth 3 -name '*.symlink' -not -path '*.git*')
  do
    dst="$HOME/.$(basename "${src%.*}")"
    link_file "$src" "$dst"
  done
}

setup_gitconfig
install_dotfiles

# If we're on a Mac, let's install and setup homebrew.
if [ "$(uname -s)" == "Darwin" ]
then
  info "installing dependencies"
  if source bin/dot | while read -r data; do info "$data"; done
  then
    success "dependencies installed"
  else
    fail "error installing dependencies"
  fi
fi

echo ''
echo '  All installed!'