install

#!/bin/bash

source_dir=~/dotfiles             # dotfiles directory
backup_dir=~/.dotfiles_old        # backup directory for old dotfiles
home_links=$source_dir/home_links # list of things to link from dotfiles to ~

logAndRun() {
    local cmd="$*"
    echo $cmd
    $cmd
    if [[ $? != 0 ]]
    then
        echo "ERROR: command failed"
        echo "please rectify and re-run"
        exit 1
    fi
}

move_if_exists() {
    local file=$1
    local target_dir=$2
    if [[ -e $file ]]
    then
        logAndRun mv $file $target_dir
    fi
}


backup_if_exists() {
    local file=$1
    if [[ -e $file ]]
    then
        logAndRun mv $file ${file}.bak
    fi
}

logAndRun mkdir -p $backup_dir
logAndRun cd $source_dir

while read file sourceFile
do
    if [[ ! -L ~/$file ]]   # if not already a link
    then
        backup_if_exists $backup_dir/$file
        move_if_exists  mv ~/$file $backup_dir
        [[ -z $sourceFile ]] && sourceFile=$file
        logAndRun ln -sf $source_dir/$sourceFile ~/$file
    else
        echo "$file ok"
    fi
done < $home_links

# .gitconfig is special, need to edit it with original user/email
if [[ -f ~/.gitconfig ]]
then
  git_name=`git config --global --get user.name`
  git_email=`git config --global --get user.email`
  cp .gitconfig $backup_dir
  cp .gitconfig ~
  echo "setting .gitconfig name and email"
  git config --global user.name $git_name
  git config --global user.email $git_email
  if [[ -z $git_name || -z $git_email ]]
  then
    echo "Warning: git user or email looks blank."
    echo "Check ~/.gitconfig"
  fi
  git config --global alias.alias "config --get-regexp ^alias\."
  git config --global alias.co checkout
  git config --global alias.br branch
  git config --global alias.lol "log --oneline --decorate --graph"
fi

mkdir -p ~/.aws/cli
backup_if_exists ~/.aws/cli/alias
ln -s $source_dir/aws.alias ~/.aws/cli/alias