#!/usr/bin/env bash

# execute script in its location folder
cd $(dirname $0)

# array of available collection names
col=(app_user awarding decoration rank squad user promotion player war campaign)

if [ -z "$1" ]
  then
    DATE=$(date '+%Y-%m-%d')
    mkdir -p ${DATE}/resource
    cp -R ../api/resource/ ${DATE}/
  else
    DATE=${1}
    tar -xzf ${DATE}.tar.gz
    rm -rf ../api/resource
    cp -Rv ${DATE}/resource ../api/
fi

for i in "${col[@]}"
do
  # provide date for restore process, if data import is needed
  if [ -z "$1" ]
    then
      mongoexport --db cc --collection $i --out ${DATE}/collections/${i}.json;
    else
      mongoimport --db cc --collection $i --drop --file ${1}/collections/${i}.json
  fi
done

if [ $(ls -lt --hide=backup.sh | wc -l) -gt 6 ]; then
    $(rm "$(ls -t --hide=backup.sh | tail -1)")
fi

if [ -z "$1" ]
  then
    tar -zcf ${DATE}.tar.gz ${DATE}
fi

# to avoid file deletion, if date to apply is entered with .tar.gz ending
if [[ $1 =~ ^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$ ]]
  then
    rm -rf ${DATE}
fi