#!/bin/bash
set -e

# https://api.opensuse.org/public/source/openSUSE:Factory:Rings:0-Bootstrap
APIURL="https://api.opensuse.org"
GITEA_PACKAGES="https://gitea.opensuse.org/api/v1/repos/rpm"
OBS_PROJECTS=()

# command line only
packages_from=
single=
verbose=0
cfg_file=

###################

declare -A packages

helpandquit()
{
	cat <<-EOF
		Usage: $0 [OPTIONS] [<projects> ...]
		OPTIONS:
		  --apiurl=URL OBS api url
		  --single   create single commit for all changes
		  -h         help screen
	EOF
	exit 0
}

log_info()
{
	[ "$verbose" -gt 0 ] || return 0
	echo "$@"
}

getopttmp=$(getopt -o hc:v --long help,config:,verbose,apiurl: -n "${0##*/}" -- "$@")
eval set -- "$getopttmp"

while true ; do
        case "$1" in
                -h|--help) helpandquit; shift ;;
		-v|--verbose) verbose=$((++verbose)); shift ;;
                -c|--config) cfg_file="$2"; shift 2 ;;
                --apiurl) APIURL="$2"; shift 2 ;;
                --) shift ; break ;;
                *) echo "Internal error!" ; exit 1 ;;
        esac
done

[ $# ] && OBS_PROJECTS=("$@")

# shellcheck disable=SC1090
. "${cfg_file:-.settings}" 2>/dev/null || :

for prj in "${OBS_PROJECTS[@]}"; do
	while read -r p l; do
		if [ -n "$l" ]; then
			echo "Warning: link $p -> $l ignored" >&2
			continue
		fi
		packages["$p"]=1
	done < <(curl -s -f "$APIURL/public/source/$prj"|sed -ne 's/.*entry name="\([^"]*\)"\( \+originpackage="\([^"]*\)"\)\?.*\/>/\1 \3/p'|sort -u)
done

for p in "${!packages[@]}"; do
	# XXX: unfortuantely plain git would ask for auth
	if ! curl -s -f "$GITEA_PACKAGES/$p" >/dev/null; then
		log_info "Warning: $p not found in $GITEA_PACKAGES" >&2
		continue
	fi
	echo "$p"
done