#!/bin/bash

DB_NAME="isteideworld"
DB_USER="uosolutions"
DB_HOST="10.124.0.3"

echo -n "MySQL password: "
read -s DB_PASS
echo

MYSQL="mysql -u${DB_USER} -p${DB_PASS} -h ${DB_HOST} -N -B ${DB_NAME}"

USHORT_REGEX="(urshort|ushort|u-short|urshort\.live)"
USHORT_URL_REGEX="https?:\/\/[^\"\\'[:space:]]*(urshort|ushort|u-short|urshort\.live)[^\"\\'[:space:]]*"

echo
echo "Limpiando base: ${DB_NAME}"
echo

POSTS_TABLES=$($MYSQL -e "
SELECT table_name
FROM information_schema.columns
WHERE table_schema='${DB_NAME}'
AND column_name='post_content';
")

OPTIONS_TABLES=$($MYSQL -e "
SELECT table_name
FROM information_schema.columns
WHERE table_schema='${DB_NAME}'
AND column_name='option_value';
")

for POSTS_TABLE in $POSTS_TABLES; do

  AFFECTED=$($MYSQL -e "
    SELECT COUNT(*)
    FROM \`${POSTS_TABLE}\`
    WHERE post_content REGEXP '${USHORT_REGEX}';
  ")

  if [ "$AFFECTED" -gt 0 ]; then
    echo "[+] Limpiando ${POSTS_TABLE} (${AFFECTED} filas)"

    $MYSQL -e "
      UPDATE \`${POSTS_TABLE}\`
      SET post_content = REGEXP_REPLACE(post_content,'${USHORT_URL_REGEX}','')
      WHERE post_content REGEXP '${USHORT_REGEX}';
    "
  fi

done

for OPTIONS_TABLE in $OPTIONS_TABLES; do

  AFFECTED=$($MYSQL -e "
    SELECT COUNT(*)
    FROM \`${OPTIONS_TABLE}\`
    WHERE option_value REGEXP '${USHORT_REGEX}';
  ")

  if [ "$AFFECTED" -gt 0 ]; then
    echo "[+] Limpiando ${OPTIONS_TABLE} (${AFFECTED} filas)"

    $MYSQL -e "
      UPDATE \`${OPTIONS_TABLE}\`
      SET option_value = REGEXP_REPLACE(option_value,'${USHORT_URL_REGEX}','')
      WHERE option_value REGEXP '${USHORT_REGEX}';
    "
  fi

done

echo
echo "Limpieza finalizada correctamente"