#!/bin/bash

YELLOW_COLOR=$'\033[33;1m'
RED_COLOR=$'\033[31;1m'
DEFAULT_COLOR=$'\033[0m'

echo Free Space:
df -h | grep 'Filesystem\|/dev/root\|/dev/sda'
echo 

echo Largest Server Directories:
du -sh /backup /home /var /usr /root | grep G | sort -rh
echo

files_larger_than_500_mb=$(find / -maxdepth 7 -type f -size +500M \( -name '*.zip' -o -name '*.7z' -o -name '*.gz' -o -name '*.bz2' -o -name '*.xz' -o -name '*.tar' -o -name '*rar'  -o -name '*log' \) -exec du -hsxc {} + | sort -rh)

if [ -n "$files_larger_than_500_mb" ]; then

 echo Files Larger Than 500MB:
 echo "$files_larger_than_500_mb"
 echo

fi

echo Would you like to an indepth review of the server disk usage to be performed?
printf "%s--WARNING--This can take more than 1 hour, depending on the size of the server.--WARNING--%s\\n" "$RED_COLOR" "$DEFAULT_COLOR"
read -e -r -p $'\e[36mPerform Indepth Review? (y/n):\e[0m ' indepth_review;

while :; do

 if [[ "$indepth_review" != 'y' && "$indepth_review" != 'n' ]]; then

  printf "%sIncorrect Value!%s\\n" "$RED_COLOR" "$DEFAULT_COLOR"
  read -e -r -p $'\e[36mPerform Indepth Review? (y/n):\e[0m ' indepth_review;
  indepth_review="${indepth_review,,}"
 
 else

  break

 fi
done

if [ "$indepth_review" = 'y' ]; then

 printf "%sPerforming Indepth Review...%s\\n" "$YELLOW_COLOR" "$DEFAULT_COLOR"

 echo Largest Directories in the Home of the Server\(Calculating only the Files in the Current Directory\):
 find /home/ -maxdepth 10 -type d | while read -r dir; do 
   
  size=$(find "$dir" -maxdepth 1 -type f -exec du -hsxc {} + | sort -rh | head -n 1 | awk '{print$1}'); 
  echo "$size $dir" 

 done | sort -rh | head -n 20 
 echo

 echo Size of the Largest Directories in the Home of the Server\(Tree Structure\):
 find /home/ -maxdepth 10 -type d | while read -r dir; do 

  size=$(du -sh "$dir" | cut -d ' ' -f 1 ); 
  echo "$size"

 done | sort -rh | head -n 20

fi