#!/bin/bash

PACKAGE=lighttpd
BASEDOWNLOADURL="https://download.lighttpd.net/lighttpd/releases-1.4.x"
SNAPSHOTURL="https://download.lighttpd.net/lighttpd/snapshots-1.4.x"

if [[ "`id -un`" != "stbuehler" ]] && [[ -z "$AUTHOR" ]]; then
  export AUTHOR="gstrauss"
  export KEYID="AF16D0F0"
fi

AUTHOR="${AUTHOR:-stbuehler}"

# may take one argument for prereleases like
# ./packdist.sh rc1-r10

syntax() {
	echo "./packdist.sh [--help] [~rc1]" >&2
	exit 2
}

while [ $# -gt 0 ]; do
	case "$1" in
	"--help")
		syntax
		;;
	"rc"*|"~rc"*)
		if [ -n "$append" ]; then
			echo "Only one append allowed" >&2
			syntax
		fi
		echo "Appending '$1'"
		append="$1"
		BASEDOWNLOADURL="${SNAPSHOTURL}"
		;;
	*)
		echo "Unknown option '$1'" >&2
		syntax
		;;
	esac
	shift
done

force() {
	"$@" || {
		echo "Command failed: $*"
		exit 1
	}
}

# summarize all changes since last release
genchanges() {
	(
		sed "/^- ${version}/,/^-/p;d" | sed "/^- /d;/^$/d" | sed -e 's/^  \*/\*/'
	) < ${self}/NEWS > CHANGES
	return 0
}

# generate links in old textile format "text":url
genlinks_changes() {
	local repourl ticketurl inf out
	#repourl="https://redmine.lighttpd.net/projects/lighttpd/repository/svn/revisions/"
	ticketurl="https://redmine.lighttpd.net/issues/"
	inf="$1"
	outf="$1".links
	(
		sed -e 's%\(\[\|\]\)%\\\1%g' \
		    -e 's%\(.\)\*%\1\\*%g' \
		    -e 's% _% \\_%g' \
		    -e 's%\(https://[a-zA-Z0-9.:_/\-]\+\)%[\1](\1)%g' \
		    -e 's%#\([0-9]\+\)%[#\1]('"${ticketurl}"'\1)%g' \
		    -e 's%\(CVE-[0-9\-]\+\)%[\1](https://cve.mitre.org/cgi-bin/cvename.cgi?name=\1)%g'
		#(svn-historical) sed -e 's%r\([0-9]\+\)%[r\1]('"${repourl}"'\1)%g' |
	) < "$inf" > "$outf"
}
#genlinks_downloads() {
#	local inf out
#	inf="$1"
#	outf="$1".links
#	(
#		sed -e 's%\(https://[a-zA-Z0-9.:_/\-]\+\)%[\1](\1)%g'
#	) < "$inf" > "$outf"
#}

www_l_n_post() {
	if [ -z "${append}" ]; then
		# release
		cat <<EOF
---
title: ${version}
author: $AUTHOR
author_email: ${AUTHOR}@lighttpd.net
tags:
- ${version}
- lighttpd
- releases
---
{% excerpt -%}

## Important changes

TODO

## Downloads

EOF
		cat DOWNLOADS.links
		cat <<EOF

{%- endexcerpt %}
## Changes from ${prevversion}

EOF
		cat CHANGES.links
	else
		# pre release
		cat <<EOF
---
title: 'PRE-RELEASE: lighttpd ${version}${append}'
author: $AUTHOR
author_email: ${AUTHOR}@lighttpd.net
tags:
- ${version}
- lighttpd
- prerelease
---
{% excerpt -%}
We would like to draw your attention to the latest pre-release of the stable 1.4 branch of lighttpd.

You can get the pre-release from these urls:
EOF
		cat DOWNLOADS.links
		cat <<EOF

Please test it as much as possible and provide us with feedback.
A lot of testing ensures a good release.

<!-- TODO: describe major changes -->

{%- endexcerpt %}

#### Changes from ${prevversion}

EOF
		cat CHANGES.links

		cat <<EOF

If you want to get the latest source for any branch, you can get it from our git repository.
Documentation to do so can be obtained from this page: [InstallFromSource](https://redmine.lighttpd.net/projects/lighttpd/wiki/InstallFromSource)
Bug reports or feature requests can be filed in our ticket system: [New Issue](https://redmine.lighttpd.net/projects/lighttpd/issues/new)
Please make sure to check if there isn't a ticket already here: [Issues](https://redmine.lighttpd.net/projects/lighttpd/issues)
Perhaps you also want to have a look at our [download site](https://download.lighttpd.net/lighttpd/)

Thank you for flying light.
EOF
	fi
}

self=$(dirname "$(readlink -f "$0")")
force cd "${self}"

if [ -d distbuild ]; then
	# make distcheck may leave readonly files
	chmod u+w -R distbuild
	rm -rf distbuild
fi
force mkdir distbuild

version=$(grep "version: '1\\.4\\." ${self}/meson.build | cut -d"'" -f2)
name="${PACKAGE}-${version}${append}"
force git remote update
if [ -z "${KEYID}" ]; then
    force git tag -s -m "${name}" "${name}"
else
    force git tag -u "${KEYID}" -m "${name}" "${name}"
fi
force git archive --format tar -o "distbuild/${name}.tar" --prefix "${name}/" "${name}"
force cd distbuild
force gzip -n --keep "${name}.tar"
force xz --keep "${name}.tar"
force rm "${name}.tar"

force sha256sum "${name}.tar."{gz,xz} > "${name}.sha256sum"
force sha512sum "${name}.tar."{gz,xz} > "${name}.sha512sum"

force gpg ${KEYID:+-u "${KEYID}"} -a --output "${name}.tar.gz.asc" --detach-sig "${name}.tar.gz"
force gpg ${KEYID:+-u "${KEYID}"} -a --output "${name}.tar.xz.asc" --detach-sig "${name}.tar.xz"

(
	echo "* ${BASEDOWNLOADURL}/${name}.tar.gz"
	echo "** GPG signature: ${BASEDOWNLOADURL}/${name}.tar.gz.asc"
	echo "** SHA256: @$(sha256sum ${name}.tar.gz | cut -d' ' -f1)@"
	echo "* ${BASEDOWNLOADURL}/${name}.tar.xz"
	echo "** GPG signature: ${BASEDOWNLOADURL}/${name}.tar.xz.asc"
	echo "** SHA256: @$(sha256sum ${name}.tar.xz | cut -d' ' -f1)@"
	echo "* SHA256 checksums: ${BASEDOWNLOADURL}/${name}.sha256sum"
	echo "* SHA512 checksums: ${BASEDOWNLOADURL}/${name}.sha512sum"
) > DOWNLOADS

(
	echo "* [${name}.tar.gz](${BASEDOWNLOADURL}/${name}.tar.gz) ([GPG signature](${BASEDOWNLOADURL}/${name}.tar.gz.asc))"
	echo "  * SHA256: \`$(sha256sum ${name}.tar.gz | cut -d' ' -f1)\`"
	echo "* [${name}.tar.xz](${BASEDOWNLOADURL}/${name}.tar.xz) ([GPG signature](${BASEDOWNLOADURL}/${name}.tar.xz.asc))"
	echo "  * SHA256: \`$(sha256sum ${name}.tar.xz | cut -d' ' -f1)\`"
	echo "* [SHA256 checksums](${BASEDOWNLOADURL}/${name}.sha256sum)"
	echo "* [SHA512 checksums](${BASEDOWNLOADURL}/${name}.sha512sum)"
) > DOWNLOADS.links

force genchanges
force genlinks_changes CHANGES
#force genlinks_downloads DOWNLOADS

prevversion="${version%.*}.$((${version##*.} - 1))"
isodate=$(date +"%Y-%m-%d")

if [ -z "${append}" ]; then
	# only for Releases
	(
		cat <<EOF
h1. Release Info

* Version: ${version}
* Previous version: [[Release-${prevversion//./_}|${prevversion}]]
* Branch: 1.4
* Status: stable
* Release Purpose: bug fixes
* Release manager: $AUTHOR
* Released date: ${isodate}

h1. Important changes from ${prevversion}

TODO

h1. Downloads

EOF
		cat DOWNLOADS
		cat <<EOF

h1. Changes from ${prevversion}

EOF
		cat CHANGES
		cat <<EOF

h1. External references

* https://www.lighttpd.net/$(date +"%Y/%-m/%-d")/${version}

EOF
	) > "Release-${version//./_}.page"

	cat "Release-${version//./_}.page"
fi

echo
echo -------
echo

www_l_n_post | tee ${isodate}-"${version}.md"

echo
echo -------
echo

escprevversion=$(printf "%s" "${prevversion}" | sed 's/\./[.]/g')
escversion=$(printf "%s" "${version}" | sed 's/\./[.]/g')
nextversion="${version%.*}.$((${version##*.} + 1))"
echo cd distbuild
echo scp "${name}.{tar*,sha*sum}" lighttpd.net:
echo ssh lighttpd.net \""cp ${name}.{tar*,sha*sum} download/lighttpd/releases-1.4.x/"\"
echo ssh lighttpd.net \""mv ${name}.{tar*,sha*sum} archive/"\"
# (not using 'sed -i' due to dir permissions)
echo ssh lighttpd.net \""sed -e 's/${escprevversion}/${version}/g' download/lighttpd/README.txt > README.txt.\\\$\\\$ && cat README.txt.\\\$\\\$ > download/lighttpd/README.txt && rm README.txt.\\\$\\\$"\"
echo ssh lighttpd.net \""echo lighttpd-${version} > download/lighttpd/releases-1.4.x/latest.txt"\"
echo
echo mkdir dl
echo cd dl
echo wget "${BASEDOWNLOADURL}/${name}".'{tar.gz,tar.xz,sha256sum,sha512sum}'
echo sha256sum -c "${name}".sha256sum
echo sha512sum -c "${name}".sha512sum
echo
echo cd "${self}"
echo sed -i -e "'s/${escversion}/${nextversion}/g'" CMakeLists.txt SConstruct configure.ac meson.build
echo git commit -m "'- next is ${nextversion}'" CMakeLists.txt SConstruct configure.ac meson.build
echo git push origin master
echo git push origin "${name}"