#!/bin/bash
set -eux
set -o noglob

API_URL="https://api.github.com/repos"
REPO_URL="https://github.com"

if [ $# -ne 1 ] ; then
    echo "The only parameter of the script is user/name of the repo"
    exit 1
fi

# login=$(git config github.user)
# passwd=$(git config github.password)

get_forks() {
    fname="${1}"
    repo_url="$API_URL/$fname/forks"
    repos="$(curl -s "$repo_url" | jq -r '.[]|.full_name')"
    for full_name in $repos ; do
        IFS='/' read -r -a names <<< "${full_name}"
        l_user="$(echo "${names[0]}"|tr '[:upper:]' '[:lower:]')"
        git remote add "${l_user}" "${REPO_URL}/${full_name}"
        git fetch "${l_user}" || continue
        get_forks "${full_name}"
    done
}

get_forks "${1}"