#!/usr/bin/env bash

 # bundle a tar.zst archive of Mercurial repositories.

 # must be absolute

 BUNDLE="${1:-comp}"

 WD=$(realpath .stash)

 OUT=$WD

 SRC_PATH=$HOME/src/$BUNDLE

 echo "Bundling $BUNDLE_NAME in $OUT..."

 rm -rf $OUT/*

 mkdir -pv $OUT

 mkdir -pv $WD/vc/hg/{zst,stream}

 cd $SRC_PATH

 # Find all mercurial repositories, create bundles and dump them to $OUT dir.

 for i in $(find . -name ".hg" | cut -c 3-); do

     echo ""

     echo "found hg repo: $i"

     cd $i/..

     echo "making zstd-v2 bundle..."

     hg bundle -a -t zstd-v2 $WD/vc/hg/zst/$(basename $(hg root)).hg.zst

     echo "making none-v2 bundle..."

     hg bundle -a -t none-v2 $WD/vc/hg/$(basename $(hg root)).hg

     echo "making stream bundle..."

     hg debugcreatestreamclonebundle $WD/vc/hg/stream/$(basename $(hg root)).hg.stream

     echo "... Done."

     cd $SRC_PATH

 done

 # archive all *.hg bundles, final compression with zst

 cd $WD/vc && tar -I 'zstd' -cf $OUT/$BUNDLE.tar.zst --exclude hg/hg.hg hg/*.hg 

 # tar -cf $OUT/$BUNDLE.tar.stream vc/stream/*.hg.stream

 # tar -cf $OUT/$BUNDLE.tar vc/*.hg

 echo "Done."