#!/bin/bash
#< Script to generate zazzybob.com tip index files

WEBROOT="/files/zazzybob.com"
TIPS_DIR="${WEBROOT}/tips"
ADM_OUT="${WEBROOT}/tiplist.adm"
CAT_OUT="${WEBROOT}/catlist.adm"
BROWSE_OUT="${WEBROOT}/browse.adm"

function make_tiplist {
   echo "--> Creating Tip List @ ${ADM_OUT}"
   rm -f ${ADM_OUT}
   ls ${TIPS_DIR} | while read file; do
      tip_file=${TIPS_DIR}/${file}
      TIP_NO=${file}
      DATE_ADDED=$( sed -n '2p' ${tip_file} )
      AUTHOR=$( sed -n '3p' ${tip_file} )
      CONTACT=$( sed -n '4p' ${tip_file} )
      CATEGORY=$( sed -n '5p' ${tip_file} )
      TITLE=$( sed -n '6p' ${tip_file} )
      echo "${TIP_NO};${DATE_ADDED};${AUTHOR};${CONTACT};${CATEGORY};${TITLE}" >> ${ADM_OUT}
   done
   echo "--> Tip List Generation Complete!"
}

function make_catlist {
      CAT_LIST=$( cut -d';' -f5 ${ADM_OUT} | sort | uniq )
      echo "--> Creating Category List @ ${CAT_OUT}"
      rm -f ${CAT_OUT}
      i=1
      echo "${CAT_LIST}" | while read category; do
         COUNT=$( cut -d';' -f5 ${ADM_OUT} | grep -c "${category}" )
         echo "${i};${category};${COUNT}" >> ${CAT_OUT}
         (( i = i + 1 ))
      done
      echo "--> Category List Generation Complete!"
}

function make_browselist {
   echo "--> Creating Browse Helper @ ${BROWSE_OUT}"
   rm -f ${BROWSE_OUT}
   # top line of file has format
   # total_no_of_tips;total_no_of_pages
   TOTAL_NO_OF_TIPS=$( wc -l < ${ADM_OUT} )
   NO_OF_PAGES=$( echo "${TOTAL_NO_OF_TIPS} / 20 " | bc )
   MOD_CHECK=$( echo "${NO_OF_PAGES} % 20 " | bc )
   if [ "${MOD_CHECK}" -ne "0" ]; then
      (( NO_OF_PAGES = NO_OF_PAGES + 1 ))
   fi
   echo "${TOTAL_NO_OF_TIPS};${NO_OF_PAGES}" >> ${BROWSE_OUT}
   for (( i = 1; i <= ${TOTAL_NO_OF_TIPS}; i++ )); do
      # format of other lines is
      # first_tip_on_page;last_tip_on_page;page_num
      if [ "$(( ( i - 1 ) % 20 ))" -eq "0" ]; then
         FIRST_TIP_ON_PAGE=${i}
         echo -n "${FIRST_TIP_ON_PAGE};" >> ${BROWSE_OUT}
      elif [ "$(( i % 20 ))" -eq "0" ]; then
         LAST_TIP_ON_PAGE=${i}
         echo -n "${LAST_TIP_ON_PAGE};" >> ${BROWSE_OUT}
         (( PAGE_NUM = LAST_TIP_ON_PAGE / 20 ))
         echo "${PAGE_NUM}" >> ${BROWSE_OUT}
      fi
   done
   # this will be the value of the last tip
   if [ "$(( ( i - 1 ) % 20 ))" -ne "0" ]; then
     echo -n "$((i - 1));" >> ${BROWSE_OUT}
     echo "$(( PAGE_NUM + 1 ))" >> ${BROWSE_OUT}
   fi
   echo "--> Browse Helper Generation Complete!" 
}

# main
make_tiplist
make_catlist
make_browselist

exit 0