#!/usr/bin/env python
import subprocess
import requests
import time
import sys
import os
from os import path
import glob

os.environ["TORNADO_SERVER"] = "http://localhost:9983"

test_files = []
for file in sys.argv[1:]:
    if not os.path.exists(file):
        file = path.join(path.dirname(__file__), 'tests', file)
    test_files.append(path.abspath(file))

os.chdir(path.join(path.dirname(__file__), '../../..'))

subprocess.check_call('zephyr/tests/generate-fixtures')

subprocess.check_call(['rm', '-f'] + glob.glob('/tmp/casper-failure*.png'))

log = open('zephyr/tests/frontend/server.log', 'w')

# Run this not through the shell, so that we have the actual PID.
server = subprocess.Popen(('tools/run-dev.py', '--test'),
                          stdout=log, stderr=log)

def assert_server_running():
    # Get the exit code of the server, or None if it is still running.
    if server.poll() is not None:
        raise RuntimeError, 'Server died unexpectedly! Check zephyr/tests/frontend/server.log'

def server_is_up():
    assert_server_running()
    try:
        # We could get a 501 error if the reverse proxy is up but the Django app isn't.
        return requests.get('http://localhost:9981/accounts/home').status_code == 200
    except:
        return False

ret = 1

try:
    # Wait for the server to start up.
    sys.stdout.write('Waiting for test server')
    while not server_is_up():
        sys.stdout.write('.')
        sys.stdout.flush()
        time.sleep(0.1)
    sys.stdout.write('\n')

    cmd = 'zephyr/tests/frontend/casperjs/bin/casperjs test '
    if test_files:
        cmd += ' '.join(test_files)
    else:
        cmd += 'zephyr/tests/frontend/tests'
    print "Running %s" % (cmd,)
    ret = subprocess.call(cmd, shell=True)
finally:
    assert_server_running()
    server.terminate()

sys.exit(ret)