#!/bin/bash

pattern='^[0-9a-zA-Z]{11}$'

gen_id () {
	local id=""
	for ((i = 0; i < 100; i++)); do 
		id=$(dd if=/dev/urandom bs=8 count=1 status=none \
			| base64 | sed 's/=$//')
		if [[ "$id" =~ $pattern ]]; then
			break;
		fi
	done
	echo "$id"
}

if [ "$1" == "-h" -o "$1" == "--help" ]; then
	echo "so-push - push code to so-db repository"
	echo
	echo "Usage:"
	echo "  so-push"
	exit 0
fi

ssh_opts=
for i in ~/.ssh/so-db.key ~/so-db.key ~/linux/so-db.key /usr/local/etc/so-db.key; do
	if [ -r "$i" ]; then
		ssh_opts="$ssh_opts -i $i"
	fi
done

if [ -z "$ssh_opts" ]; then
	echo "so-db.key SSH private key is missing." >&2
	echo "Download the so-db.key from PZE and place in linux directory" >&2
	exit 128
fi

id=$(git config so.id)
if [[ "$id" =~ $pattern ]]; then
	:
else
	id=$(gen_id)
	git config so.id "$id"
fi
echo "Password: $id" >&2

(
echo "PUSH $id"
git rev-parse HEAD
echo "origin/km/so-2021.." | git pack-objects --revs --stdout) \
| ssh -o BatchMode=yes -T \
	$ssh_opts \
	so-db@so.podlesie.net