#!/usr/bin/env python
"""
Use the AppVeyor API to download Windows artifacts.

Taken from: https://bitbucket.org/ned/coveragepy/src/tip/ci/download_appveyor.py
# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
"""
from __future__ import unicode_literals

import argparse
import os
import zipfile

import requests


def make_auth_headers():
    """Make the authentication headers needed to use the Appveyor API."""
    path = os.path.expanduser("~/.appveyor.token")
    if not os.path.exists(path):
        raise RuntimeError(
            "Please create a file named `.appveyor.token` in your home directory. "
            "You can get the token from https://ci.appveyor.com/api-token"
        )
    with open(path) as f:
        token = f.read().strip()

    headers = {"Authorization": "Bearer {}".format(token)}
    return headers


def download_latest_artifacts(account_project, build_id):
    """Download all the artifacts from the latest build."""
    if build_id is None:
        url = "https://ci.appveyor.com/api/projects/{}".format(account_project)
    else:
        url = "https://ci.appveyor.com/api/projects/{}/build/{}".format(
            account_project, build_id
        )
    build = requests.get(url, headers=make_auth_headers()).json()
    jobs = build["build"]["jobs"]
    print(
        "Build {0[build][version]}, {1} jobs: {0[build][message]}".format(
            build, len(jobs)
        )
    )

    for job in jobs:
        name = job["name"]
        print("  {0}: {1[status]}, {1[artifactsCount]} artifacts".format(name, job))

        url = "https://ci.appveyor.com/api/buildjobs/{}/artifacts".format(job["jobId"])
        response = requests.get(url, headers=make_auth_headers())
        artifacts = response.json()

        for artifact in artifacts:
            is_zip = artifact["type"] == "Zip"
            filename = artifact["fileName"]
            print("    {0}, {1} bytes".format(filename, artifact["size"]))

            url = "https://ci.appveyor.com/api/buildjobs/{}/artifacts/{}".format(
                job["jobId"], filename
            )
            download_url(url, filename, make_auth_headers())

            if is_zip:
                unpack_zipfile(filename)
                os.remove(filename)


def ensure_dirs(filename):
    """Make sure the directories exist for `filename`."""
    dirname = os.path.dirname(filename)
    if dirname and not os.path.exists(dirname):
        os.makedirs(dirname)


def download_url(url, filename, headers):
    """Download a file from `url` to `filename`."""
    ensure_dirs(filename)
    response = requests.get(url, headers=headers, stream=True)
    if response.status_code == 200:
        with open(filename, "wb") as f:
            for chunk in response.iter_content(16 * 1024):
                f.write(chunk)
    else:
        print("    Error downloading {}: {}".format(url, response))


def unpack_zipfile(filename):
    """Unpack a zipfile, using the names in the zip."""
    with open(filename, "rb") as fzip:
        z = zipfile.ZipFile(fzip)
        for name in z.namelist():
            print("      extracting {}".format(name))
            ensure_dirs(name)
            z.extract(name)


parser = argparse.ArgumentParser(description="Download artifacts from AppVeyor.")
parser.add_argument(
    "--id",
    metavar="PROJECT_ID",
    default="python-mario/mario-addons",
    help="Project ID in AppVeyor.",
)
parser.add_argument(
    "build", nargs="?", metavar="BUILD_ID", help="Build ID in AppVeyor. Eg: master-123"
)

if __name__ == "__main__":
    # import logging
    # logging.basicConfig(level="DEBUG")
    args = parser.parse_args()
    download_latest_artifacts(args.id, args.build)
