#!/bin/bash
set -o errexit

SCRIPT="`readlink -e $0`"
SCRIPTPATH=$(dirname ${SCRIPT})
source ${SCRIPTPATH}/hv-hg-functions.sh

# for use with git-remote-hg:
#   http://felipec.wordpress.com/2012/11/13/git-remote-hg-bzr-2/

# Uncomment to have verbose debug output
#debug=1

print_usage()
{
    echo "$(basename $0) -- HG subrepository importer for git-remote-hg"
    echo "Usage: $(basename $0) [OPTIONS...]"
}

if [ "x${1}" = "x--help" ]; then
    print_usage
    exit 1
fi

if [ ! -f .hgsub ]; then
    echo "No Mercurial subrepositories found"
    exit 1
fi

if [ ! -f .gitignore ]; then
    # We do not want to track .gitignore itself
    echo ".gitignore" > .gitignore
fi

hg_subpaths_config

# Read lines from .hgsub
while read sub; do
    # Remove CR (DOS)
    sub="${sub//$'\r'/}"

    if [ "${sub}" != "" ]; then
        # Get subrepository URL
        src="${sub//*= /}"

        # Replace using subpaths extension content
        src=${src/${sp_src}/${sp_dst}}

        # Get subrepository local alias or label
        dest="${sub// =*}"

        # Get project ID (example: S0289)
        id=$(echo ${sub} | sed "s/.*\(S[0-9][0-9][0-9][0-9]\).*/\1/")

        # Get revision of subrepository (remove CR from .hgsubstate)
        rev=$(cat .hgsubstate | tr -d '\r' | grep "${id}" | sed "s/ .*//")

        if [ -n "${debug}" ]; then
            echo "repo: ${src}"
            echo "  id:     ${id}"
            echo "  rev:    ${rev}"
            echo "  src:    ${src}"
            echo "  dest:   ${dest}"
        fi

        pushd "${dest}" 1> /dev/null
        echo "============================"
        echo "subrepo: ${dest}"
        git pull
        popd 1> /dev/null
    fi
done < .hgsub