#!/bin/bash

. "$(dirname "$(readlink -e "$0")")/config"
. "$(dirname "$(readlink -e "$0")")/db-functions"

if (( $# < 3 )); then
	msg "usage: %s <repo-from> <repo-to> <pkgname|pkgbase> ..." "${0##*/}"
	exit 1
fi

args=("${@}")
repo_from="${args[0]}"
repo_to="${args[1]}"
ftppath_from="${FTP_BASE}/${repo_from}/os/"
ftppath_to="${FTP_BASE}/${repo_to}/os/"

if ! check_repo_permission "$repo_to" || ! check_repo_permission "$repo_from"; then
	die "You don't have permission to move packages from %s to %s" "$repo_from" "$repo_to"
fi

# TODO: this might lock too much (architectures)
for pkgarch in "${ARCHES[@]}"; do
	repo_lock "${repo_to}" "${pkgarch}" || exit 1
	repo_lock "${repo_from}" "${pkgarch}" || exit 1
done

# check if packages to be moved exist in svn and ftp dir
arch_svn checkout -q -N "${SVNREPO}" "${WORKDIR}/svn" >/dev/null
for pkgbase in "${args[@]:2}"; do
	arch_svn up -q "${WORKDIR}/svn/${pkgbase}" >/dev/null
	found=false
	for tarch in "${ARCHES[@]}"; do
		while read -r pkgarch pkgfile; do

			svnrepo_from="${WORKDIR}/svn/${pkgbase}/repos/${repo_from}-${pkgarch}"
			if ! [[ -r ${svnrepo_from}/PKGBUILD ]]; then
				die "%s not found in %s-%s" "$pkgbase" "$repo_from" "$pkgarch"
			fi

			# getpkgfile will `exit` for us if it fails;
			# no need to check its result
			getpkgfile "${ftppath_from}/${tarch}/${pkgfile}" >/dev/null

			found=true
		done < <(arch_expac_pkgbase "$repo_from" "$tarch" '%a %f' "$pkgbase")
	done
	[[ $found = true ]] || die "%s not found in %s" "$pkgbase" "$repo_from"
done

msg "Moving packages from [%s] to [%s]..." "$repo_from" "$repo_to"

for arch in "${ARCHES[@]}"; do
	declare -a add_pkgs_$arch
	declare -a remove_pkgs_$arch
done
for pkgbase in "${args[@]:2}"; do
	tag_list=""
	for tarch in "${ARCHES[@]}"; do
		while read -r pkgname pkgver pkgarch pkgfile; do
			svnrepo_from="${WORKDIR}/svn/${pkgbase}/repos/${repo_from}-${pkgarch}"
			svnrepo_to="${WORKDIR}/svn/${pkgbase}/repos/${repo_to}-${pkgarch}"
			if [[ -f ${svnrepo_from}/PKGBUILD ]]; then
				msg2 "%s (%s)" "$pkgbase" "$pkgarch"

				if [[ -d ${svnrepo_to} ]]; then
					for file in $(arch_svn ls "${svnrepo_to}"); do
						arch_svn rm -q "${svnrepo_to}/$file@"
					done
				else
					mkdir "${svnrepo_to}"
					arch_svn add -q "${svnrepo_to}"
				fi

				for file in $(arch_svn ls "${svnrepo_from}"); do
					arch_svn mv -q -r HEAD "${svnrepo_from}/$file@" "${svnrepo_to}/"
				done
				arch_svn rm --force -q "${svnrepo_from}"
				tag_list+=", $pkgarch"
			fi

			declare -n add_pkgs="add_pkgs_${tarch}"
			declare -n remove_pkgs="remove_pkgs_${tarch}"

			ln -s "../../../${PKGPOOL}/${pkgfile}" "${ftppath_to}/${tarch}/"
			if [[ -f ${FTP_BASE}/${PKGPOOL}/${pkgfile}.sig ]]; then
				ln -s "../../../${PKGPOOL}/${pkgfile}.sig" "${ftppath_to}/${tarch}/"
			fi
			add_pkgs+=("${FTP_BASE}/${PKGPOOL}/${pkgfile}")
			remove_pkgs+=("${pkgname}")
		done < <(arch_expac_pkgbase "$repo_from" "$tarch" '%n %v %a %f' "$pkgbase")
	done
	tag_list="${tag_list#, }"
	arch_svn commit -q "${WORKDIR}/svn/${pkgbase}" -m "${0##*/}: moved ${pkgbase} from [${repo_from}] to [${repo_to}] (${tag_list})"
done

for tarch in "${ARCHES[@]}"; do
	declare -n add_pkgs="add_pkgs_${tarch}"
	declare -n remove_pkgs="remove_pkgs_${tarch}"
	if [[ -n ${add_pkgs[@]} ]]; then
		arch_repo_modify add "${repo_to}" "${tarch}" "${add_pkgs[@]}"
		arch_repo_modify remove "${repo_from}" "${tarch}" "${remove_pkgs[@]}"
	fi
done

for pkgarch in "${ARCHES[@]}"; do
	repo_unlock "${repo_from}" "${pkgarch}"
	repo_unlock "${repo_to}" "${pkgarch}"
done