#!/bin/bash
# update-sym-links - Symlink latest versions in parent folders
#
# Copyright 2023 Corwin Brust <corwin@bru.st>
#
# This program is distributed under the terms of the GNU Public
# License version 3 or (at your option) any later version.
#

BASE=/home/dh_aw28jd/corwin-emacs
DIRS="emacs-30 emacs-31 emacs-32"
PKGS="-installer.exe .zip -no-deps.zip -src.zip -sha256sums.txt"

FOUND=

for DIR in $DIRS ; do
    #find emacs-29/* -type d -print0 | xargs -0 stat --format '%Y :%y %n' | sort -nr | cut -d: -f2- | head -1 | cut -d / -f 2
    LATEST=$( ls -t $BASE/$DIR | grep -v 'latest' | grep "^$DIR" | head -1 )

    HTACCESS=$BASE/$DIR/.htaccess
    echo '<FilesMatch "\.directive(\.asc)?$">
  deny from all
</FilesMatch>' > $HTACCESS
    # remove AddDescription lines from .htaccess
    cat $HTACCESS | grep -v ^AddDescription >> $HTACCESS

    BL="$BASE/$DIR/$LATEST"
    if [[ -r $BL ]] ; then
	BN="${BASE}/${DIR}"
	ln -sfT $BL $BN/${DIR}-latest
	MOD=$( perl -MPOSIX=strftime -le \
		    "print strftime('%F.%H',localtime [stat shift]->[9])" \
		    $BN/${DIR}-latest)
	FOUND="{\"branch\":\"$DIR\",\"latest\":\"$LATEST\",\"date\":\"$MOD\"} $FOUND"

	# put an invarient link to the latest of each kind in each root
	for FILE in $PKGS ; do
	    LINK=$( ls -1 ${BL}/*${FILE} )
	    NAME="${BN}/${DIR}-latest${FILE}"
	    #echo "$DIR $FILE $LINK"
	    if [[ -r $LINK ]] ; then
		ln -fT $LINK $NAME
		#ln -fT $LINK.sig $NAME.sig
		#NOEXT=$(echo $FILE | perl -pne 's/^(?:\.|-)//; s/\..*$//g')
		#BASENAME=$(basename $LINK)
		echo "AddDescription \"<a href=${LATEST}>$(basename $LINK)</a>\" $(basename $NAME)\$" >>$HTACCESS
	    else
		rm -f $NAME
		#rm -f $NAME.sig
	    fi
	done
	echo "AddDescription \"<a href=${LATEST}/>latest: $LATEST</a>\" ${DIR}-latest\$" >>$HTACCESS
	#echo "$DIR $LATEST"
    else
	echo "WARNING: No latest version found for $DIR"
    fi
done

(TOTAL=0
 for JSON in $FOUND ; do TOTAL=$((TOTAL+1)) ; done
 COUNT=0
 (echo -n "["
  for JSON in $FOUND ; do
      echo -n "$JSON";
      COUNT=$((COUNT+1))
      if [[ $COUNT -ne $TOTAL ]] ; then
	  echo -n ", "
      fi
  done
  echo "]")) | tee $BASE/emacs-latest.json

(echo -n "// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-v3-or-Later
document.emacsVersionData = "; \
 cat $BASE/emacs-latest.json ; \
 echo "// @license-end"
 ) | tee $BASE/emacs-latest.js