#!/usr/bin/env python
"""Executable Python script for testing the action proxy.

  This script is useful for testing the action proxy (or its derivatives)
  by simulating invoker interactions. Use it in combination with
  delete-build-run.sh which builds and starts up the action proxy.
  Examples:
     ./delete-build-run.sh &
     ./invoke.py init <action source file> # should return OK
     ./invoke.py run '{"some":"json object as a string"}'
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
"""

import os
import re
import sys
import json
import requests
import codecs

DOCKER_HOST = "localhost"
if "DOCKER_HOST" in os.environ:
    try:
        DOCKER_HOST = re.compile("tcp://(.*):[\d]+").findall(
            os.environ["DOCKER_HOST"])[0]
    except Exception:
        print("cannot determine docker host from %s" %
              os.environ["DOCKER_HOST"])
        sys.exit(-1)
DEST = "http://%s:8080" % DOCKER_HOST


def content_from_args(args):
    if len(args) == 0:
        return None

    if len(args) == 1 and os.path.exists(args[0]):
        with open(args[0]) as fp:
            return json.load(fp)

    # else...
    in_str = " ".join(args)
    try:
        d = json.loads(in_str)
        if isinstance(d, dict):
            return d
        else:
            raise "Not a dict."
    except:
        return in_str


def init(args):
    main = args[1] if len(args) == 2 else "main"
    args = args[0] if len(args) >= 1 else None

    if args and args.endswith(".zip"):
        with open(args, "rb") as fp:
            contents = fp.read().encode("base64")
        binary = True
    elif args:
        with(codecs.open(args, "r", "utf-8")) as fp:
            contents = fp.read()
        binary = False
    else:
        contents = None
        binary = False

    r = requests.post("%s/init" % DEST, json={"value": {"code": contents,
                                                        "binary": binary,
                                                        "main": main}})
    print(r.text)


def run(args):
    value = content_from_args(args)
    # print("Sending value: %s..." % json.dumps(value)[0:40])
    r = requests.post("%s/run" % DEST, json={"value": value})
    print(r.text)


if sys.argv[1] == "init":
    init(sys.argv[2:])
elif sys.argv[1] == "run":
    run(sys.argv[2:])
else:
    print("usage: 'init <filename>' or 'run JSON-as-string'")