import dvc

from dvc.utils.compat import str

import os
from uuid import uuid4

from dvc.main import main
from mock import patch
from tests.basic_env import TestDvc
from tests.utils import spy


class TestCmdImport(TestDvc):
    def test(self):
        ret = main(["import-url", self.FOO, "import"])
        self.assertEqual(ret, 0)
        self.assertTrue(os.path.exists("import.dvc"))

        ret = main(["import-url", "non-existing-file", "import"])
        self.assertNotEqual(ret, 0)

    def test_unsupported(self):
        ret = main(["import-url", "unsupported://path", "import_unsupported"])
        self.assertNotEqual(ret, 0)


class TestDefaultOutput(TestDvc):
    def test(self):
        tmpdir = self.mkdtemp()
        filename = str(uuid4())
        tmpfile = os.path.join(tmpdir, filename)

        with open(tmpfile, "w") as fd:
            fd.write("content")

        ret = main(["import-url", tmpfile])
        self.assertEqual(ret, 0)
        self.assertTrue(os.path.exists(filename))
        with open(filename) as fd:
            self.assertEqual(fd.read(), "content")


class TestShouldRemoveOutsBeforeImport(TestDvc):
    def setUp(self):
        super(TestShouldRemoveOutsBeforeImport, self).setUp()
        tmp_dir = self.mkdtemp()
        self.external_source = os.path.join(tmp_dir, "file")
        with open(self.external_source, "w") as fobj:
            fobj.write("content")

    def test(self):
        remove_outs_call_counter = spy(dvc.stage.Stage.remove_outs)
        with patch.object(
            dvc.stage.Stage, "remove_outs", remove_outs_call_counter
        ):
            ret = main(["import-url", self.external_source])
            self.assertEqual(0, ret)

        self.assertEqual(1, remove_outs_call_counter.mock.call_count)


class TestImportFilename(TestDvc):
    def setUp(self):
        super(TestImportFilename, self).setUp()
        tmp_dir = self.mkdtemp()
        self.external_source = os.path.join(tmp_dir, "file")
        with open(self.external_source, "w") as fobj:
            fobj.write("content")

    def test(self):
        ret = main(["import-url", "-f", "bar.dvc", self.external_source])
        self.assertEqual(0, ret)
        self.assertTrue(os.path.exists("bar.dvc"))

        os.remove("bar.dvc")

        ret = main(["import-url", "--file", "bar.dvc", self.external_source])
        self.assertEqual(0, ret)
        self.assertTrue(os.path.exists("bar.dvc"))

        os.remove("bar.dvc")
        os.mkdir("sub")

        path = os.path.join("sub", "bar.dvc")
        ret = main(["import-url", "--file", path, self.external_source])
        self.assertEqual(0, ret)
        self.assertTrue(os.path.exists(path))