bootstrap

#!/usr/bin/env bash

# Colors
COLOR_OFF='\033[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
BLUE='\033[00;34m'

# Logging tag
INFO="\r  [ $BLUE..$COLOR_OFF ]"
USER="\r  [ $YELLOW??$COLOR_OFF ]"
ALERT="\r  [ $RED!!$COLOR_OFF ]"
SUCCESS="\r\033[2K  [ ${GREEN}OK$COLOR_OFF ]"
FAIL="\r\033[2K  [${RED}FAIL$COLOR_OFF]"

set -eu

setup_nala () {
  if ! test $(which nala)
  then
      printf "$INFO Installing nala (apt wrapper)\n"
  
      sudo apt-get install nala -y
  
      printf "$SUCCESS nala installed\n"
  fi
}


setup_stow () {
  if ! test $(which stow)
  then
    printf "$INFO Installing stow (for sym linking)\n"

    sudo nala install stow -y

    printf "$SUCCESS stow installed\n"
  fi
}

delete_dotfiles () {
  for file in $1
  do
    if [ -f $HOME/$file ] || [ -L $HOME/$file ]
    then
      rm -f "$HOME/$file"
      printf "$INFO Deleted dotfile $HOME/$file\n"
    fi
  done
}

backup_system_files () {
  for file in $1
  do
    if [ -f /$file ] || [ -L /$file ]
    then
      sudo cp /$file /$file.bak
      printf "$INFO backup created: /$file.bak\n"
    fi
  done
}

delete_system_files () {
  for file in $1
  do
    if [ -f /$file ] || [ -L /$file ]
    then
      sudo rm -f "/$file"
      printf "$INFO Deleted system file: /$file\n"
    fi
  done
}

install_dotfiles () {
  printf "$INFO Installing dotfiles\n"

  for package in $(find -mindepth 1 -maxdepth 1 -not -empty -not -path '*/\.git' -not -name 'packages' -not -name 'system' -type d | sed 's|^./||')
  do
    printf "$INFO Installing dotfiles for $package\n"
    CONFLICTS=$(stow --no --verbose $package 2>&1 | awk '/\* existing target is/ {print $NF}')
    if [ -n "$CONFLICTS" ]
    then
      printf "$ALERT Do you want to overwrite the following exising config files?\n"
      echo $CONFLICTS | tr ' ' '\n'
      read -p "y/N> " -e action

      if [ "$action" = 'y' ] || [ "$action" = 'yes' ]
      then
        delete_dotfiles "$CONFLICTS"
        stow --no-folding --verbose $package
        printf "$SUCCESS Dotfiles installed for $package\n"
      else
        printf "$INFO Skipping dotfiles for $package\n"
      fi
    else
      stow --no-folding --verbose $package
      printf "$SUCCESS Dotfiles installed for $package\n"
    fi
  done
}

install_system_dotfiles () {
  printf "$INFO Installing system dotfiles\n"

  CONFLICTS=$(stow --no --verbose -t / system 2>&1 | awk '/\* existing target is/ {print $NF}')
  if [ -n "$CONFLICTS" ]
  then
    printf "$ALERT The following system files already exists\n"
    echo $CONFLICTS | tr ' ' '\n'
    read -p "Overwrite? y/N> " -e action
    
    if [ "$action" = 'y' ] || [ "$action" = 'yes' ]
    then
      read -p "Make a backup? Y/n> " -e backup 
      if [ "$backup" != 'n' ] || [ "$backup" != 'no' ]
      then
        backup_system_files "$CONFLICTS"
      fi
      delete_system_files "$CONFLICTS"
      sudo stow --no-folding --verbose -t / system
      printf "$SUCCESS Dotfiles installed for system\n"
    else
      printf "$INFO Skipping dotfiles for system\n"
    fi
  else
    sudo stow --no-folding --verbose -t / system
    printf "$SUCCESS Dotfiles installed for system\n"
  fi
}

setup_nala
setup_stow
install_dotfiles
# install_system_dotfiles # removing system setup as it was a bad idea to have system files modifiable by user

printf "$SUCCESS Finished!\n"