#! /usr/bin/python
import argparse
import json
import os
import shutil
import subprocess
import sys

def runcmd(command):
    print('RUN ' + command)
    process = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)
    for line in iter(process.stdout.readline, b''):  # b'' indicates EOF
        print(line.decode('utf-8'), end='')

def load_environment(filename):
    with open(filename) as f:
        return json.load(f)


parser = argparse.ArgumentParser()
parser.add_argument('--cross-target-info-path', dest='target_info')
parser.add_argument('--cross-destination-path', dest='dst')
args = parser.parse_args()

cross_target_info_path    = args.target_info
cross_destination_path    = args.dst
ctng_config               = cross_target_info_path + '/ct-ng.config'
cross_destdir             = os.environ['CROSS_DESTDIR']

if not os.path.isdir(cross_destdir):
    raise Exception("ERROR... expected internal destination for ct-ng does not exist")
if not os.path.isdir(cross_target_info_path):
    raise Exception("Supplied configuration info path is not a directory")
if not os.path.isfile(ctng_config):
    raise Exception("No crosstool ng configuration file found (ct-ng.config)")

shutil.copy(ctng_config, '/crosstool/.config')
os.chdir('/crosstool')

runcmd("su crosstoolng -c 'ct-ng source'")
runcmd("su crosstoolng -c 'ct-ng build'")

runcmd("cp -rv " + cross_destdir + "/* " + cross_destination_path + "/")

sys.exit(0)