#!/bin/bash
#
# SPDX-License-Identifier: GPL-3.0-or-later

_DEVTOOLS_LIBRARY_DIR=${_DEVTOOLS_LIBRARY_DIR:-@pkgdatadir@}
# shellcheck source=src/lib/common.sh
source "${_DEVTOOLS_LIBRARY_DIR}"/lib/common.sh

source /usr/share/makepkg/util/util.sh
source /usr/share/makepkg/srcinfo.sh


check_pkgbuild_validity() {
	# shellcheck source=contrib/makepkg/PKGBUILD.proto
	. ./PKGBUILD

	# skip when there are no sources available
	if (( ! ${#source[@]} )); then
		return
	fi

	# validate sources hash algo is at least > sha1
	local bad_algos=("cksums" "md5sums" "sha1sums")
	local good_hash_algo=false

	# from makepkg libmakepkg/util/schema.sh
	for integ in "${known_hash_algos[@]}"; do
		local sumname="${integ}sums"
		if [[ -n ${!sumname} ]] && ! in_array "${sumname}" "${bad_algos[@]}"; then
			good_hash_algo=true
			break
		fi
	done

	if ! $good_hash_algo; then
		die "PKGBUILD lacks a secure cryptographic checksum, insecure algorithms: ${bad_algos[*]}"
	fi
}

# Source makepkg.conf; fail if it is not found
if [[ -r '/etc/makepkg.conf' ]]; then
	# shellcheck source=config/makepkg/x86_64.conf
	source '/etc/makepkg.conf'
else
	die '/etc/makepkg.conf not found!'
fi

# Source user-specific makepkg.conf overrides
if [[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" ]]; then
	# shellcheck source=/dev/null
	source "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf"
elif [[ -r "$HOME/.makepkg.conf" ]]; then
	# shellcheck source=/dev/null
	source "$HOME/.makepkg.conf"
fi

cmd=${0##*/}

# Deprecation warning
if [[ -z $_DEVTOOLS_COMMAND ]]; then
	warning "${cmd} is deprecated and will be removed. Use 'pkgctl release' instead"
fi

if [[ ! -f PKGBUILD ]]; then
	die 'No PKGBUILD file'
fi

if ! repo_spec=$(git config --local devtools.version) || [[ ${repo_spec} != "${GIT_REPO_SPEC_VERSION}" ]]; then
	error "repository specs are out of date, try:"
	msg2 'pkgctl repo configure'
	exit 1
fi

if [[ "$(git symbolic-ref --short HEAD)" != main ]]; then
	die 'must be run from the main branch'
fi

source=()
# shellcheck source=contrib/makepkg/PKGBUILD.proto
. ./PKGBUILD
pkgbase=${pkgbase:-$pkgname}

case "$cmd" in
	commitpkg)
		if (( $# == 0 )); then
			die 'Usage: commitpkg <reponame> [-f] [-s server] [-l limit] [-a arch] [commit message]'
		fi
		repo="$1"
		shift
		;;
	*pkg)
		repo="${cmd%pkg}"
		;;
	*)
		die 'Usage: commitpkg <reponame> [-f] [-s server] [-l limit] [-a arch] [commit message]'
		;;
esac


if (( ${#validpgpkeys[@]} != 0 )); then
	if [[ -d keys ]]; then
		for key in "${validpgpkeys[@]}"; do
			if [[ ! -f keys/pgp/$key.asc ]]; then
				export-pkgbuild-keys || die 'Failed to export valid PGP keys for source files'
			fi
		done
	else
		export-pkgbuild-keys || die 'Failed to export valid PGP keys for source files'
	fi

	git add --force -- keys/pgp/*
fi

# find files which should be under source control
needsversioning=(PKGBUILD)
for s in "${source[@]}"; do
	[[ $s != *://* ]] && needsversioning+=("$s")
done
for i in 'changelog' 'install'; do
	while read -r file; do
		# evaluate any bash variables used
		eval "file=\"$(sed "s/^\(['\"]\)\(.*\)\1\$/\2/" <<< "$file")\""
		needsversioning+=("$file")
	done < <(sed -n "s/^[[:space:]]*$i=//p" PKGBUILD)
done
for key in "${validpgpkeys[@]}"; do
	needsversioning+=("keys/pgp/$key.asc")
done

# assert that they really are controlled by git
if (( ${#needsversioning[*]} )); then
	for file in "${needsversioning[@]}"; do
		# skip none existing files
		if [[ ! -f "${file}" ]]; then
			continue
		fi
		if ! git ls-files --error-unmatch "$file"; then
			die "%s is not under version control" "$file"
		fi
	done
fi


server=${PACKAGING_REPO_RELEASE_HOST}
rsyncopts=(-e ssh -p '--chmod=ug=rw,o=r' -c -h -L --progress --partial -y)
archreleaseopts=()
while getopts ':l:a:s:f' flag; do
	case $flag in
		f) archreleaseopts+=('-f') ;;
		s) server=$OPTARG ;;
		l) rsyncopts+=("--bwlimit=$OPTARG") ;;
		a) commit_arch=$OPTARG ;;
		:) die "Option requires an argument -- '%s'" "$OPTARG" ;;
		\?) die "Invalid option -- '%s'" "$OPTARG" ;;
	esac
done
shift $(( OPTIND - 1 ))

# check packages for validity
for _arch in "${arch[@]}"; do
	if [[ -n $commit_arch && ${_arch} != "$commit_arch" ]]; then
		continue
	fi
	for _pkgname in "${pkgname[@]}"; do
		fullver=$(get_full_version "$_pkgname")

		if pkgfile=$(find_cached_package "$_pkgname" "$fullver" "$_arch"); then
			check_package_validity "$pkgfile"
		fi
	done

	fullver=$(get_full_version "$pkgbase")
	if pkgfile=$(find_cached_package "$pkgbase-debug" "$fullver" "$_arch"); then
		check_package_validity "$pkgfile"
	fi
done

# check for PKGBUILD standards
check_pkgbuild_validity

# auto generate .SRCINFO
stat_busy 'Generating .SRCINFO'
write_srcinfo_content > .SRCINFO
git add --force .SRCINFO
stat_done

if [[ -n $(git status --porcelain --untracked-files=no) ]]; then
	stat_busy 'Staging files'
	for f in $(git ls-files --modified); do
		git add "$f"
	done
	for f in $(git ls-files --deleted); do
		git rm "$f"
	done
	stat_done

	msgtemplate="upgpkg: $(get_full_version)"
	if [[ -n $1 ]]; then
		stat_busy 'Committing changes'
		git commit -q -m "${msgtemplate}: ${1}" || die
		stat_done
	else
		[[ -z ${WORKDIR:-} ]] && setup_workdir
		msgfile=$(mktemp --tmpdir="${WORKDIR}" commitpkg.XXXXXXXXXX)
		echo "$msgtemplate" > "$msgfile"
		if [[ -n $GIT_EDITOR ]]; then
			$GIT_EDITOR "$msgfile" || die
		elif giteditor=$(git config --get core.editor); then
			$giteditor "$msgfile" || die
		elif [[ -n $VISUAL ]]; then
			$VISUAL "$msgfile" || die
		elif [[ -n $EDITOR ]]; then
			$EDITOR "$msgfile" || die
		else
			die "No usable editor found (tried \$GIT_EDITOR, git config [core.editor], \$VISUAL, \$EDITOR)."
		fi
		[[ -s $msgfile ]] || die
		stat_busy 'Committing changes'
		git commit -v -q -F "$msgfile" || die
		unlink "$msgfile"
		stat_done
	fi
fi

declare -a uploads
declare -a commit_arches
declare -a skip_arches

for _arch in "${arch[@]}"; do
	if [[ -n $commit_arch && ${_arch} != "$commit_arch" ]]; then
		skip_arches+=("$_arch")
		continue
	fi

	for _pkgname in "${pkgname[@]}"; do
		fullver=$(get_full_version "$_pkgname")
		if ! pkgfile=$(find_cached_package "$_pkgname" "$fullver" "${_arch}"); then
			warning "Skipping %s: failed to locate package file" "$_pkgname-$fullver-$_arch"
			skip_arches+=("$_arch")
			continue 2
		fi
		uploads+=("$pkgfile")
	done

	fullver=$(get_full_version "$pkgbase")
	if ! pkgfile=$(find_cached_package "$pkgbase-debug" "$fullver" "$_arch"); then
		continue
	fi
	if ! is_debug_package "$pkgfile"; then
		continue
	fi
	uploads+=("$pkgfile")
done

for pkgfile in "${uploads[@]}"; do
	sigfile="${pkgfile}.sig"
	if [[ ! -f $sigfile ]]; then
		msg "Signing package %s..." "${pkgfile}"
		if [[ -n $GPGKEY ]]; then
			SIGNWITHKEY=(-u "${GPGKEY}")
		fi
		gpg --detach-sign --use-agent --no-armor "${SIGNWITHKEY[@]}" "${pkgfile}" || die
	fi
	if ! gpg --verify "$sigfile" "$pkgfile" >/dev/null 2>&1; then
		die "Signature %s is incorrect!" "$sigfile"
	fi
	uploads+=("$sigfile")
done

for _arch in "${arch[@]}"; do
	if ! in_array "$_arch" "${skip_arches[@]}"; then
		commit_arches+=("$_arch")
	fi
done

if [[ ${#commit_arches[*]} -gt 0 ]]; then
	archrelease "${archreleaseopts[@]}" "${commit_arches[@]/#/$repo-}" || die
fi

if [[ ${#uploads[*]} -gt 0 ]]; then
	new_uploads=()

	# convert to absolute paths so rsync can work with colons (epoch)
	while read -r -d '' upload; do
		new_uploads+=("$upload")
	done < <(realpath -z "${uploads[@]}")

	uploads=("${new_uploads[@]}")
	unset new_uploads
	msg 'Uploading all package and signature files'
	rsync "${rsyncopts[@]}" "${uploads[@]}" "$server:staging/$repo/" || die
fi