#!/bin/bash
# THIS BOOTSTRAP SCRIPT IS PROVIDED WITHOUT WARRANTY!
# Don't come crying to Warf if this script eats your desktop

# Download and execute remote script if supplied hash matches
# $1 == sha1 hash
# $2 == script name
bootstrap() {
  echo "### INFO: Starting bootstrap of script: $2"

  local build=$(mktemp -d -p /var/tmp)
  mkdir -p $build
  pushd $build 2>&1 > /dev/null
    echo "### INFO: Preparing to download script: $2" | tee -a $HOME/bootstrap.log

    curl -so $2 https://${BOOTSTRAP}${BOOTPATH// /\/}$2
    local ret=$?

    if [[ $ret == 0 ]]; then
      echo "### INFO: Checking SHA1 checksum for script: $2" | tee -a $HOME/bootstrap.log

      local sha1=$(sha1sum $2 | awk '{print $1}')
      if [[ "$sha1" == "$1" ]]; then
        echo "### INFO: Executing script: $2" | tee -a $HOME/bootstrap.log

        chmod +x $2 && /bin/bash -c ./$2 | tee -a $HOME/bootstrap.log
      else
        echo "### ERROR: SHA1 checksum does not match for script: $2 (expected: '$1', actual: '${sha1}'), skipping" | tee -a $HOME/bootstrap.log
      fi
    else
      echo "### ERROR: Could not download script: $2" | tee -a $HOME/bootstrap.log
    fi
  popd
  rm -rf $build

  echo "### INFO: Finished bootstrap of script: $2" | tee -a $HOME/bootstrap.log
}

export BOOTSTRAP=boot.warf.ca
export BOOTPATH=/$(hostname | awk -F\. '{for (i=NF; i>0; i--) printf("%s ",$i);print ""}')
export -f bootstrap

/bin/bash <(curl -s https://${BOOTSTRAP}${BOOTPATH// /\/}__init__.sh)

# EOF