import json
import os
import pytest

from contextlib import contextmanager
from io import BytesIO
from tempfile import TemporaryDirectory, NamedTemporaryFile
from unittest.mock import patch
from urllib.request import urlopen, Request
from zipfile import ZipFile

from repo2docker.contentproviders import Figshare


def test_content_id():
    with patch.object(Figshare, "urlopen") as fake_urlopen:
        fake_urlopen.return_value.url = "https://figshare.com/articles/title/9782777"
        fig = Figshare()
        fig.detect("10.6084/m9.figshare.9782777")
        assert fig.content_id == "9782777"


test_fig = Figshare()
test_dois_links = [
    ("10.6084/m9.figshare.9782777", {"host": test_fig.hosts[0], "article": "9782777"}),
    (
        "10.6084/m9.figshare.9782777.v1",
        {"host": test_fig.hosts[0], "article": "9782777"},
    ),
    (
        "https://doi.org/10.6084/m9.figshare.9782777",
        {"host": test_fig.hosts[0], "article": "9782777"},
    ),
    (
        "https://figshare.com/articles/title/97827771234",
        {"host": test_fig.hosts[0], "article": "97827771234"},
    ),
    (
        "https://figshare.com/articles/title/9782777/1",
        {"host": test_fig.hosts[0], "article": "9782777"},
    ),
    (
        "https://figshare.com/articles/title/9782777/",
        {"host": test_fig.hosts[0], "article": "9782777"},
    ),
]

test_spec = {"host": test_fig.hosts[0], "article": "1234"}


@pytest.mark.parametrize("test_input,expected", test_dois_links)
def test_detect_figshare(test_input, expected):
    assert Figshare().detect(test_input) == expected


def test_detect_not_figshare():
    assert Figshare().detect("/some/path/here") is None
    assert Figshare().detect("https://example.com/path/here") is None
    assert Figshare().detect("10.21105/joss.01277") is None
    assert Figshare().detect("10.5281/zenodo.3232985") is None
    assert Figshare().detect("https://doi.org/10.21105/joss.01277") is None


@contextmanager
def figshare_archive(prefix="a_directory"):
    with NamedTemporaryFile(suffix=".zip") as zfile:
        with ZipFile(zfile.name, mode="w") as zip:
            zip.writestr("{}/some-file.txt".format(prefix), "some content")
            zip.writestr("{}/some-other-file.txt".format(prefix), "some more content")

        yield zfile.name


def test_fetch_zip():
    # see test_zenodo.py/test_fetch_software
    with figshare_archive() as fig_path:
        mock_response = BytesIO(
            json.dumps(
                {
                    "files": [
                        {
                            "name": "afake.zip",
                            "is_link_only": False,
                            "download_url": "file://{}".format(fig_path),
                        }
                    ]
                }
            ).encode("utf-8")
        )

        def mock_urlopen(self, req):
            if isinstance(req, Request):
                return mock_response
            else:
                return urlopen(req)

        with patch.object(Figshare, "urlopen", new=mock_urlopen):
            with TemporaryDirectory() as d:
                fig = Figshare()
                output = []
                for l in fig.fetch(test_spec, d):
                    output.append(l)

                unpacked_files = set(os.listdir(d))
                expected = set(["some-other-file.txt", "some-file.txt"])
                assert expected == unpacked_files


def test_fetch_data():
    with figshare_archive() as a_path:
        with figshare_archive() as b_path:
            mock_response = BytesIO(
                json.dumps(
                    {
                        "files": [
                            {
                                "name": "afake.file",
                                "download_url": "file://{}".format(a_path),
                                "is_link_only": False,
                            },
                            {
                                "name": "bfake.data",
                                "download_url": "file://{}".format(b_path),
                                "is_link_only": False,
                            },
                            {"name": "cfake.link", "is_link_only": True},
                        ]
                    }
                ).encode("utf-8")
            )

            def mock_urlopen(self, req):
                if isinstance(req, Request):
                    return mock_response
                else:
                    return urlopen(req)

            with patch.object(Figshare, "urlopen", new=mock_urlopen):
                with TemporaryDirectory() as d:
                    fig = Figshare()

                    output = []
                    for l in fig.fetch(test_spec, d):
                        output.append(l)

                    unpacked_files = set(os.listdir(d))
                    # ZIP files shouldn't have been unpacked
                    expected = {"bfake.data", "afake.file"}
                    assert expected == unpacked_files