#!/bin/bash
# github mirror script
# @author Michael Klier <chi@chimeric.de>

login=USERNAME
token=APITOKEN
backup_dir=BACKUPDIR

api_url=http://github.com/api/v2/xml

# the API returns only 30 repos per page, let's check the first 10 pages
repos=''
for i in `seq 1 10`
do
    rep="$(wget --quiet --post-data="login=${login}&token=${token}" -O - ${api_url}/repos/show/${login}?page=$i | xmlstarlet sel -T -t -m '//repository' -v name -o ' ')"
    repos="$repos $rep"
done

[[ ! -d ${backup_dir} ]] && mkdir -p ${backup_dir}
cd ${backup_dir}

for repo in $repos;
do
    branches="$(wget --quiet --post-data="login=${login}&token=${token}" -O - ${api_url}/repos/show/${login}/${repo}/branches | xmlstarlet sel -T -t -m '//branches/*' -v 'name()' -o ' ')"

    if [ ! -d ${repo} ]; then
        git clone -o github git@github.com:${login}/${repo}.git ${repo}
    fi

    cd ${repo}
    for branch in $branches;
    do
        git branch --track ${branch} github/${branch} 2>/dev/null
        git checkout ${branch}
        git pull github ${branch}
    done
    cd ${backup_dir}
done

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