#!/bin/sh
# Puppet notes -- script is file
# mkdir /srv/git_seed
# cron job to invoke file daily
# Need to setup OUTPUT_DIR to be served by apache

# Where the git repos live.  These are bare repos
ORIGIN_DIR=/srv/git/repositories/rpms

# Where we'll create the repos to tar up
WORK_DIR=/srv/git_seed

# Subdirectory makes cleanup easier
SEED_DIR=$WORK_DIR/git-checkout

# subdirectory to collect rpm speciles
SPEC_DIR=$WORK_DIR/rpm-specs

# Where to store the seed tarball for download
OUTPUT_DIR=/srv/cache/lookaside/

# Instead of starting fresh each time, we'll try to use git pull to keep things synced
#rm -rf $WORK_DIR/*
mkdir -p $SEED_DIR
mkdir -p $SPEC_DIR

# Give people an indication of when this checkout was last synced
TIMESTAMP=$(date --rfc-3339=seconds)
DATE=$(date +'%Y%m%d')
echo "$TIMESTAMP" >$SEED_DIR/TIMESTAMP

for repo in $ORIGIN_DIR/*.git; do
  bname=$(basename $repo .git)
  working_tree=$SEED_DIR/$bname
  # uncomment to skip processing dead.package repos
  #  if [ -e $working_tree/dead.package ]; then
  #  continue
  #  fi
  if [ -d $working_tree ]; then
    pushd $working_tree &>/dev/null
    sed -i "s@url = .*@url = $repo@" $working_tree/.git/config
    git pull --all &>/dev/null
    sed -i "s@url = .*@url = https://src.fedoraproject.org/rpms/$bname@" $working_tree/.git/config
    popd &>/dev/null
    if [ -e $working_tree/dead.package ]; then
      rm -f $working_tree/$bname.spec
      rm -f $SPEC_DIR/$bname.spec
    elif [ -e $working_tree/$bname.spec ]; then
      cp -p $working_tree/$bname.spec $SPEC_DIR/
    fi
  else
    pushd $SEED_DIR &>/dev/null
    git clone $repo &>/dev/null
    popd &>/dev/null
    sed -i "s@url = .*@url = https://src.fedoraproject.org/rpms/$bname@" $working_tree/.git/config
    if [ -e $working_tree/dead.package ]; then
      rm -f $working_tree/$bname.spec
      rm -f $SPEC_DIR/$bname.spec
    elif [ -e $working_tree/$bname.spec ]; then
      cp -p $working_tree/$bname.spec $SPEC_DIR/
    fi
  fi
done

# Search and create tar balls for existing Epel branches
archive_epel_branches() {
  search_epel=${1:-'*epel*'}
  branches="$(git branch -r --list "$search_epel")"
  for result in $branches; do
    if [[ "(echo $result | grep -Eo '[0-9]+')" -gt "6" ]]; then
      git checkout "$result"
      tar -cf - -C$WORK_DIR $(basename $SEED_DIR) | xz -2 >$OUTPUT_DIR/.git-seed-$DATE-$result.tar.gzxz
      tar -cf - -C$WORK_DIR $(basename $SPEC_DIR) | xz -2 >$OUTPUT_DIR/.rpm-specs-$DATE-$result.tar.xz
      rm $OUTPUT_DIR/git-seed*tar.xz
      rm $OUTPUT_DIR/rpm-specs*tar.xz
      mv $OUTPUT_DIR/.git-seed-$DATE.tar.xz $OUTPUT_DIR/git-seed-$DATE-$result.tar.xz
      mv $OUTPUT_DIR/.rpm-specs-$DATE.tar.xz $OUTPUT_DIR/rpm-specs-$DATE-$result.tar.xz
      ln -s git-seed-$DATE-$result.tar.xz $OUTPUT_DIR/git-seed-latest.tar.xz
      ln -s rpm-specs-$DATE-$result.tar.xz $OUTPUT_DIR/rpm-specs-latest.tar.xz
    else
      echo "Epel versions below '7' not supported"
    fi
  done
}

tar -cf - -C$WORK_DIR $(basename $SEED_DIR) | xz -2 >$OUTPUT_DIR/.git-seed-$DATE.tar.xz
tar -cf - -C$WORK_DIR $(basename $SPEC_DIR) | xz -2 >$OUTPUT_DIR/.rpm-specs-$DATE.tar.xz
rm $OUTPUT_DIR/git-seed*tar.xz
rm $OUTPUT_DIR/rpm-specs*tar.xz
mv $OUTPUT_DIR/.git-seed-$DATE.tar.xz $OUTPUT_DIR/git-seed-$DATE.tar.xz
mv $OUTPUT_DIR/.rpm-specs-$DATE.tar.xz $OUTPUT_DIR/rpm-specs-$DATE.tar.xz
ln -s git-seed-$DATE.tar.xz $OUTPUT_DIR/git-seed-latest.tar.xz
ln -s rpm-specs-$DATE.tar.xz $OUTPUT_DIR/rpm-specs-latest.tar.xz

archive_epel_branches

python2 /usr/local/bin/alternative_arch_report.py /srv/git_seed/rpm-specs/ |
  mail -s "[Report] Packages Restricting Arches" arch-excludes@lists.fedoraproject.org