#!/bin/bash

#
# Part of the monthly mirror update
#
# Update symlinks in cgcs-centos-repo to point to the latest version of packages in /import/mirrors/CentOS/tis-r5-CentOS/newton
#
# This step updates Binary links, and adds Source links
#

MIRROR_ROOT=/import/mirrors/CentOS/tis-r5-CentOS/newton
BIN_ROOT=$MIRROR_ROOT/Binary
SRC_ROOT=$MIRROR_ROOT/Source
BLACK_LIST_FILE=$MIRROR_ROOT/Data/black_list.txt
WHITE_LIST_FILE=$MIRROR_ROOT/Data/white_list.txt

cd $MY_REPO/cgcs-centos-repo

if [ $? -ne 0 ]; then
   echo 'ERROR: failed to cd to $MY_REPO/cgcs-centos-repo'
   return 1
fi

names=' '
snames=' '

do_work () {
   dat=${1}

   b=$(echo "$dat" | awk -F '#' '{ print $2 }')
   d=$(echo "$dat" | awk -F '#' '{ print $3 }')
   r="$d/$b"

   DEBUG_INFO=0
   MATCH=$(echo $b | grep '[-]debuginfo-')
   if [ "$MATCH" != "" ]; then
      DEBUG_INFO=1
   fi

   MATCH=$(grep "^$b" $BLACK_LIST_FILE || true)
   if [ "$MATCH" != "" ]; then
      echo "NOTE: '$b' is black listed"
      continue
   fi

   if [ $DEBUG_INFO -eq 1 ]; then
      sb=$(rpm -q --info --nosignature -p $r | grep '^Source RPM  : ' | sed 's#^Source RPM  : ##')
      if [ "x$sb" == "x" ]; then
         echo "ERROR: no source rpm listed for '$b'"
         continue
      fi
      s=$(find Source -name "$sb")
      if [ "x$s" == "x" ]; then
         echo "NOTE: no source rpm '$sb' found for '$b'"
         continue
      fi
   fi

   name=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $r)

   MATCH=$(grep "^$b" $WHITE_LIST_FILE || true)
   if [ "$MATCH" == "" ]; then
      # Not white listed, check for python2 alternative
      # python-rpm-macros-3-6.1 is a notable case white_list case... 
      # We need BOTH python-rpm-macros-3-6.1 and python2-rpm-macros-3-6.1
      #  so substituting python-rpm-macros-3-6.1 with python2-rpm-macros-3-6.1 is an error

      altname=$(echo $name | sed 's#^python-#python2-#')
      if [ "$altname" != "$name" ]; then
         # look for python2 alternative
         sb=$(rpm -q --info --nosignature -p $r | grep '^Source RPM  : ' | sed 's#^Source RPM  : ##')

         if [ "x$sb" != "x" ]; then
            MATCH=$(grep "^$sb" $BLACK_LIST_FILE || true)
            if [ "$MATCH" != "" ]; then
               echo "NOTE: '$sb' is black listed, so '$b' is ignored"
               continue
            fi
         fi

         for dat2 in $(for br in $(find $BIN_ROOT -name "$altname-*.rpm" | grep -v '.src.rpm$' | grep -v '[-]debuginfo-'); do
                         ddd=$(dirname $br)
                         bbb=$(basename $br)
                         sss=$(echo $bbb | sed -e 's#.centos.#.#' -e 's#.el7.#.#'  -e 's#.el7_##' -e 's#.rpm$##' -e 's#.src$##' -e 's#.noarch$##' -e 's#.x86_64$##')
                         echo "$sss#$bbb#$ddd"
                     done | sort -r -V)
         do
             b2=$(echo "$dat2" | awk -F '#' '{ print $2 }')
             d2=$(echo "$dat2" | awk -F '#' '{ print $3 }')
             r2="$d2/$b2"
             name2=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $r2)
             if [ "$name2" != "$altname" ]; then
                continue
             fi
             sb2=$(rpm -q --info --nosignature -p $r2 | grep '^Source RPM  : ' | sed 's#^Source RPM  : ##')
             # if [ "$sb" == "$sb2" ]; then
             #   continue
             # fi

             sbs=$(echo $sb | sed -e 's#.centos.#.#' -e 's#.el7.#.#'  -e 's#.el7_##' -e 's#.rpm$##' -e 's#.src$##' -e 's#.noarch$##' -e 's#.x86_64$##')
             sbs2=$(echo $sb2 | sed -e 's#.centos.#.#' -e 's#.el7.#.#'  -e 's#.el7_##' -e 's#.rpm$##' -e 's#.src$##' -e 's#.noarch$##' -e 's#.x86_64$##')
             newer=$((echo $sbs; echo $sbs2) | sort -r -V | head -n 1)
             if [ "$sbs" != "$sbs2" ]; then
                if [ "$newer" == "$sbs2" ]; then
                   # swap alternate for original
                   for link in $(find Binary -name $b); do
                      echo "SUGGEST: rm $link"
                      git rm -f $link
                   done
   
                   r=$r2
                   name=$name2
                   b=$b2
                   break
                fi
             fi
         done
      fi
   fi

   echo "$names" | grep " $name " >> /dev/null
   if [ $? -ne 0 ]; then
      sb=$(rpm -q --info --nosignature -p $r | grep '^Source RPM  : ' | sed 's#^Source RPM  : ##')
      if [ "x$sb" == "x" ]; then
         echo "ERROR: no source rpm listed for '$b'"
         continue
      fi
      s=$(find $SRC_ROOT -name "$sb")
      if [ "x$s" == "x" ]; then
         echo "ERROR: no source rpm '$sb' found for '$b'"
         continue
      fi

      if [ "x$sb" != "x" ]; then
         MATCH=$(grep "^$sb" $BLACK_LIST_FILE || true)
         if [ "$MATCH" != "" ]; then
            echo "NOTE: '$sb' is black listed, so '$b' is ignored"
            continue
         fi
      fi

      sname=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $s)

      lb=$(find Binary -name "$b")
      if [ "x$lb" == "x" ]; then
          echo "MISSING: '$b'"
          link=$(echo $r | sed "s#^$MIRROR_ROOT/##")
          echo "SUGGEST: ln -s $r $link"
          ln -s $r $link
          git add $link
      else
          echo "OK: '$b'"
      fi

      for r2 in $(find Binary -name "$name-*.rpm"); do
          b2=$(basename $r2)
          if [ "$b" != "$b2" ]; then
             name2=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $r2)
             if [ "$name" == "$name2" ]; then
                MATCH=$(grep "^$b2" $WHITE_LIST_FILE || true)
                if [ "$MATCH" != "" ]; then
                   link=$(echo $r2 | sed "s#^$MIRROR_ROOT/##")
                   echo "SUGGEST: rm $link"
                   git rm -f $link
                fi
             fi
          fi
      done

      if [ $DEBUG_INFO -eq 0 ]; then
         # Not a debuginfo therefore we can pull in new src.rpm
         names="${names}${name} "
         lsb=$(find Source -name "$sb")
         if [ "x$lsb" == "x" ]; then
             echo "MISSING: '$sb'"
             link=$(echo $s | sed "s#^$MIRROR_ROOT/##")
             echo "SUGGEST: ln -s $s $link"
             ln -s $s $link
             git add $link
         else
             echo "OK: '$sb'"
         fi

         echo "$names" | grep " $name " >> /dev/null
         if [ $? -ne 0 ]; then
            for s2 in $(find Source -name "$sname-*.rpm"); do
                sb2=$(basename $s2)
                if [ "$sb" != "$sb2" ]; then
                   sname2=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $s2)
                   if [ "$sname" == "$sname2" ]; then
                      MATCH=$(grep "^$sb2" $WHITE_LIST_FILE || true)
                      if [ "$MATCH" != "" ]; then
                         link=$(echo $s2 | sed "s#^$MIRROR_ROOT/##")
                         echo "SUGGEST: rm $link"
                         git rm -f $link
                      fi
                   fi
                fi
            done
         fi
         snames="${snames}${sname} "
      fi
   fi
}


for dat in $(for br in $(find $BIN_ROOT -name '*.rpm' | grep -v '.src.rpm$' | grep -v '[-]debuginfo-'); do
              d=$(dirname $br)
              b=$(basename $br)
              s=$(echo $b | sed -e 's#.centos.#.#' -e 's#.el7.#.#'  -e 's#.el7_##' -e 's#.rpm$##' -e 's#.src$##' -e 's#.noarch$##' -e 's#.x86_64$##')
              echo "$s#$b#$d"
            done | sort -r -V)
do
   do_work ${dat}
done

for dat in $(for br in $(find $BIN_ROOT -name '*.rpm' | grep -v '.src.rpm$' | grep '[-]debuginfo-'); do
              d=$(dirname $br)
              b=$(basename $br)
              s=$(echo $b | sed -e 's#.centos.#.#' -e 's#.el7.#.#'  -e 's#.el7_##' -e 's#.rpm$##' -e 's#.src$##' -e 's#.noarch$##' -e 's#.x86_64$##')
              echo "$s#$b#$d"
            done | sort -r -V)
do
   do_work ${dat}
done