#!/bin/bash

# Copyright 2014-2015 Holger Levsen <holger@layer-acht.org>
# released under the GPLv=2

DEBUG=false
. /srv/jenkins/bin/common-functions.sh
common_init "$@"

# common code defining db access
. /srv/jenkins/bin/reproducible_common.sh

set -e

cleanup_tmpdirs() {
	cd
	$RSSH "sudo chflags -R noschg $TMPDIR"
	$RSSH "rm -r $TMPDIR"
	rm $TMPDIR -r
	$RSSH 'sudo rm -rf /usr/src'
}

create_results_dirs() {
	mkdir -p $BASE/freebsd/dbd
}

save_freebsd_results(){
	local RUN=$1
	echo "============================================================================="
	echo "$(date -u) - Saving freebsd ${FREEBSD_VERSION} artifacts for $RUN."
	echo "============================================================================="
	mkdir -p $TMPDIR/$RUN/
	# copy results over
	DUMMY_DATE="$(date -u +'%Y-%m-%d')T00:00:00Z"
	$RSSH "sudo find $TMPDIR -newer $TMPDIR -exec touch -d '$DUMMY_DATE' {} \;"
	$RSSH "sudo find $TMPDIR -print0 | LC_ALL=C sort -z | sudo tar --null -T - --no-recursion -cJf $TMPDIR.tar.xz"
	$RSCP:$TMPDIR.tar.xz $TMPDIR/$RUN/$TARGET_NAME.tar.xz
	$RSSH "sudo chflags -R noschg $TMPDIR ; sudo rm -r $TMPDIR $TMPDIR.tar.xz ; mkdir $TMPDIR"
}

#
# main
#
FREEBSD_TARGET="release/10.2.0"
RSSH="ssh freebsd-jenkins.debian.net"
RSCP="scp -r freebsd-jenkins.debian.net"
TMPBUILDDIR=/usr/src
$RSSH 'sudo rm -rf /usr/src ; sudo mkdir /usr/src ; sudo chown jenkins /usr/src'  ### this is tmpfs on linux, we should move this to tmpfs on freebsd too
TMPDIR=$($RSSH 'TMPDIR=/srv/reproducible-results mktemp -d')  # used to compare results
DATE=$(date -u +'%Y-%m-%d')
START=$(date +'%s')
trap cleanup_tmpdirs INT TERM EXIT
echo "============================================================================="
echo "$(date -u) - FreeBSD host info"
echo "============================================================================="
$RSSH freebsd-version

echo "============================================================================="
echo "$(date -u) - Cloning the freebsd git repository (which is autosynced with their CVS repository)"
echo "============================================================================="
$RSSH git clone --depth 1 --branch $FREEBSD_TARGET https://github.com/freebsd/freebsd.git $TMPBUILDDIR
FREEBSD=$($RSSH "cd $TMPBUILDDIR ; git log -1")
FREEBSD_VERSION=$($RSSH "cd $TMPBUILDDIR ; git describe --always")
echo "This is freebsd $FREEBSD_VERSION."
echo
$RSSH "cd $TMPBUILDDIR ; git log -1"
TARGET_NAME=$(echo "freebsd_${FREEBSD_TARGET}_git${FREEBSD_VERSION}" | sed "s#/#-#g")

echo "============================================================================="
echo "$(date -u) - Building freebsd ${FREEBSD_VERSION} - first build run."
echo "============================================================================="
export TZ="/usr/share/zoneinfo/Etc/GMT+12"
export LANG="en_GB.UTF-8"
# actually build everything
NUM_CPU=4 # if someone could tell me how to determine this on freebsd, this would be neat
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG sudo make -j $NUM_CPU buildworld"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG sudo make -j $NUM_CPU buildkernel"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG DESTDIR=$TMPDIR sudo make -j $NUM_CPU installworld"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG DESTDIR=$TMPDIR sudo make -j $NUM_CPU installkernel"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG DESTDIR=$TMPDIR sudo make -j $NUM_CPU distribution"
# save results in b1
save_freebsd_results b1


echo "============================================================================="
echo "$(date -u) - Building freebsd - second build run."
echo "============================================================================="
export TZ="/usr/share/zoneinfo/Etc/GMT-14"
export LANG="fr_CH.UTF-8"
export LC_ALL="fr_CH.UTF-8"
###export PATH="$PATH:/i/capture/the/path"
###umask 0002
# use allmost all cores for second build
NEW_NUM_CPU=$(echo $NUM_CPU-1|bc)
# actually build everything
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG LC_ALL=$LC_ALL sudo make -j $NEW_NUM_CPU buildworld"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG LC_ALL=$LC_ALL sudo make -j $NEW_NUM_CPU buildkernel"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG LC_ALL=$LC_ALL DESTDIR=$TMPDIR sudo make -j $NEW_NUM_CPU installworld"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG LC_ALL=$LC_ALL DESTDIR=$TMPDIR sudo make -j $NEW_NUM_CPU installkernel"
$RSSH "cd $TMPBUILDDIR ; TZ=$TZ LANG=$LANG LC_ALL=$LC_ALL DESTDIR=$TMPDIR sudo make -j $NEW_NUM_CPU distribution"
# save results in b2
save_freebsd_results b2

# reset environment to default values again
export LANG="en_GB.UTF-8"
unset LC_ALL
export TZ="/usr/share/zoneinfo/UTC"
export PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:"
umask 0022

# run diffoscope on the results
TIMEOUT="30m"
DIFFOSCOPE="$(schroot --directory /tmp -c source:jenkins-reproducible-${DBDSUITE}-diffoscope diffoscope -- --version 2>&1)"
echo "============================================================================="
echo "$(date -u) - Running $DIFFOSCOPE on freebsd..."
echo "============================================================================="
FILES_HTML=$(mktemp --tmpdir=$TMPDIR)
echo "       <ul>" > $FILES_HTML
GOOD_FILES=0
ALL_FILES=0
SIZE=""
create_results_dirs
cd $TMPDIR/b1
tree .
#for i in * ; do
	#cd $i
i="."
	echo "       <table><tr><th>Artifacts for <code>$TARGET_NAME</code></th></tr>" >> $FILES_HTML
	for j in $(find * -type f |sort -u ) ; do
		let ALL_FILES+=1
		call_diffoscope $i $j
		get_filesize $j
		if [ -f $TMPDIR/$i/$j.html ] ; then
			mkdir -p $BASE/freebsd/dbd/$i/$(dirname $j)
			mv $TMPDIR/$i/$j.html $BASE/freebsd/dbd/$i/$j.html
			echo "         <tr><td><a href=\"dbd/$i/$j.html\"><img src=\"/userContent/static/weather-showers-scattered.png\" alt=\"unreproducible icon\" /> $j</a> ($SIZE) is unreproducible.</td></tr>" >> $FILES_HTML
		else
			SHASUM=$(sha256sum $j|cut -d " " -f1)
			echo "         <tr><td><img src=\"/userContent/static/weather-clear.png\" alt=\"reproducible icon\" /> $j ($SHASUM, $SIZE) is reproducible.</td></tr>" >> $FILES_HTML
			let GOOD_FILES+=1
			rm -f $BASE/freebsd/dbd/$i/$j.html # cleanup from previous (unreproducible) tests - if needed
		fi
	done
	#cd ..
	echo "       </table>" >> $FILES_HTML
#done
GOOD_PERCENT=$(echo "scale=1 ; ($GOOD_FILES*100/$ALL_FILES)" | bc)
# are we there yet?
if [ "$GOOD_PERCENT" = "100.0" ] ; then
	MAGIC_SIGN="!"
else
	MAGIC_SIGN="?"
fi

#
#  finally create the webpage
#
cd $TMPDIR ; mkdir freebsd
PAGE=freebsd/freebsd.html
cat > $PAGE <<- EOF
<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width">
    <title>Reproducible FreeBSD $MAGIC_SIGN</title>
    <link rel='stylesheet' href='global.css' type='text/css' media='all' />
  </head>
  <body>
    <div id="logo">
      <img src="320px-Freebsd_logo.svg.png" />
      <h1>Reproducible FreeBSD $MAGIC_SIGN</h1>
    </div>
    <div class="content">
      <div class="page-content">
EOF
write_page_intro FreeBSD
write_page "       <p>$GOOD_FILES ($GOOD_PERCENT%) out of $ALL_FILES built freebsd files were reproducible in our test setup"
if [ "$GOOD_PERCENT" = "100.0" ] ; then
	write_page "!"
else
	write_page "."
fi
write_page "        These tests were last run on $DATE for version ${FREEBSD_VERSION} using ${DIFFOSCOPE}. <em>This is very much work in progress, especially the build targets should be choosen better...</em></p>"
write_explaination_table FreeBSD
cat $FILES_HTML >> $PAGE
write_page "     <p><pre>"
echo -n "$FREEBSD" >> $PAGE
write_page "     </pre></p>"
write_page "    </div></div>"
write_page_footer FreeBSD
publish_page
rm -f $FILES_HTML 

# the end
calculate_build_duration
print_out_duration
irc_message "$REPRODUCIBLE_URL/freebsd/ has been updated. ($GOOD_PERCENT% reproducible)"
echo "============================================================================="

# remove everything, we don't need it anymore...
cleanup_tmpdirs
trap - INT TERM EXIT