focus

#!/usr/bin/env bash

set -Eeuo pipefail

hosts_file="/etc/hosts"
hosts=(
  "www.reddit.com"
  "twitter.com"
  "www.nrc.nl"
  "www.theguardian.com"
)

block() {
  echo "127.0.0.1 $1" | sudo tee -a "$hosts_file" >/dev/null
}

unblock() {
  sudo sed -i '' "/$1/d" "$hosts_file"
}

if grep -qF "twitter.com" "$hosts_file"; then
  for host in "${hosts[@]}"; do
    unblock "$host"
  done
  echo "Focus if off ⚡️"
else
  for host in "${hosts[@]}"; do
    block "$host"
  done
  echo "Focus is on 😌"
fi

# Flush DNS cache
sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder