#!/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 removes obsolete Binary links
#

cd $MY_REPO/cgcs-centos-repo
MIRROR_ROOT=/import/mirrors/CentOS/tis-r5-CentOS/newton
BIN_ROOT=$MIRROR_ROOT/Binary
SRC_ROOT=$MIRROR_ROOT/Source

cd $MY_REPO/cgcs-centos-repo

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

for dat in $(for br in $(find Binary -name '*.rpm' | grep -v '.src.rpm$' ); 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
   b=$(echo "$dat" | awk -F '#' '{ print $2 }')
   d=$(echo "$dat" | awk -F '#' '{ print $3 }')
   r="$d/$b"
   name=$(rpm -q --nosignature --queryformat '%{NAME}\n' -p $r)

   link=$(readlink $r)
   sb=$(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
      DELETED=0
      altname=$(echo $name | sed 's#^python-#python2-#')
      if [ "$altname" != "$name" ]; then
         # look for python2 alternative

         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
                   echo "SUGGEST: rm $r"
                   git rm -f $r
   
                   DELETED=1
                fi
             fi
         done
      fi

      if [ $DELETED -eq 0 ]; then
         echo "ERROR: no source rpm '$sb' found for '$b'"
         echo "SUGGEST: rm $r"
         git rm -f $r
         continue
      fi
   fi
done

#
# The following would delete all binary rpms that Titanium Cloud would otherwise compile.
# However for bootstrapping the build there are some packages that we must have...
#    e.g. bash, kernel-headers, ....
# So we will need something smarter than to just delete everything.
#
# TMP_DIR=$(mktemp -d /tmp/link_cgcs_centos_repo_XXXXXX)
#
# BUILT_SRPMS_FILE=$TMP_DIR/built_srpms_file
# 
# for r in $(for c in $(find $MY_REPO -type d -name centos); do
#               for sp in $(find $c -name srpm_path); do
#                  echo "$sp: $(cat $sp)"
#               done
#            done | grep 'mirror:' | awk -F ' ' '{ print $2 }') ; do
#    b=$(basename $r)
#    s=$(find $MY_REPO/cgcs-centos-repo/Source/ -name $b)
#    n=$(rpm -q --qf '%{NAME}' --nosignature -p $s)
#    echo "$n:$b" >> $BUILT_SRPMS_FILE
# done
# 
# cd $MY_REPO/cgcs-centos-repo
# 
# for r in $(find Binary -name '*.rpm'); do
#    b=$(basename $r)
#    sb=$(rpm -q --info --nosignature -p $r | grep '^Source RPM  :' | sed 's#^Source RPM  : ##')
#    if [ "x$sb" != "x" ]; then
#       s=$(find Source/ -name $sb)
#       if [ "x$s" != "x" ]; then
#          n=$(rpm -q --qf '%{NAME}' --nosignature -p $s)
#          grep "^$n:" $BUILT_SRPMS_FILE
#          if [ $? -eq 0 ]; then
#             git rm -f $r
#          fi
#       fi
#    fi
# done
# 
# \rm $BUILT_SRPMS_FILE
# rmdir $TMP_DIR

TMP_DIR=$(mktemp -d /tmp/link_cgcs_centos_repo_XXXXXX)
EXCLUDE_LIST=$TMP_DIR/exclude_list

# List od packages we compile from scratch, not from centos srpm, goes to $EXCLUDE_LIST
for g in $(find $MY_REPO -type d -name .git); do 
   d=$(dirname $g)
   for cpd in $(find $d -maxdepth 1 -name 'centos_pkg_dir*'); do 
      (
       cd $d
       for pd in $(cat $cpd); do 
          (
           cd $pd/centos
           if [ -f srpm_path ]; then 
              continue
           fi
           for spec in $(find . -name '*.spec'); do 
              n=$(spec_find_tag 'name' $spec '/tmp/' '0' 2> /dev/null)
              echo "$spec: $n"
              echo $n >> $EXCLUDE_LIST
           done
          )
       done
      )
   done
done

cd $MY_REPO/cgcs-centos-repo
for r in $(find Binary  -name '*.rpm'); do 
   s=$(rpm -q --info --nosignature -p $r | grep '^Source RPM' | sed 's#^Source RPM ..##')
   n=$(rpm -q --nosignature --qf '%{NAME}' -p $(find Source -name $s) )
   grep "^$n$" $EXCLUDE_LIST
   if [ $? -eq 0 ]; then 
      echo "rm $r"
      git rm $r
   fi
done

\rm -r $TMP_DIR

echo "REMINDER: inspect changes in $MY_REPO/cgcs-centos-repo and commit with ..."
echo '   TIMESTAMP=$(date +"%Y-%m-%d")'
echo '   git commit -m "JENKINS: repo update $TIMESTAMP"'