# -*- coding: utf-8 -*-

try:
    import unittest2 as unittest
except ImportError:
    import unittest
from unittest import mock

import os
import tempfile
import shutil

from pungi.phases.image_checksum import ImageChecksumPhase, dump_checksums
from tests.helpers import DummyCompose, PungiTestCase


class TestImageChecksumPhase(PungiTestCase):
    def test_phase_is_never_skipped(self):
        compose = DummyCompose(self.topdir, {})
        phase = ImageChecksumPhase(compose)
        self.assertFalse(phase.skip())

    def test_config_skip_individual_with_multiple_algorithms(self):
        compose = DummyCompose(
            self.topdir,
            {"media_checksums": ["md5", "sha1"], "media_checksum_one_file": True},
        )
        phase = ImageChecksumPhase(compose)
        with self.assertRaises(ValueError) as ctx:
            phase.validate()

        self.assertIn("media_checksum_one_file", str(ctx.exception))

    @mock.patch("os.path.exists")
    @mock.patch("kobo.shortcuts.compute_file_checksums")
    @mock.patch("pungi.phases.image_checksum.dump_checksums")
    def test_checksum_one_file(self, dump_checksums, cc, exists):
        compose = DummyCompose(
            self.topdir,
            {"media_checksums": ["sha256"], "media_checksum_one_file": True},
        )

        phase = ImageChecksumPhase(compose)

        exists.return_value = True
        cc.return_value = {"sha256": "cafebabe"}

        phase.run()

        dump_checksums.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/CHECKSUM",
            set([("image.iso", 123, "sha256", "cafebabe")]),
        )
        cc.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/image.iso", ["sha256"]
        )
        compose.image.add_checksum.assert_called_once_with(None, "sha256", "cafebabe")

    @mock.patch("os.path.exists")
    @mock.patch("kobo.shortcuts.compute_file_checksums")
    @mock.patch("pungi.phases.image_checksum.dump_checksums")
    def test_checksum_save_individuals(self, dump_checksums, cc, exists):
        compose = DummyCompose(self.topdir, {"media_checksums": ["md5", "sha256"]})

        phase = ImageChecksumPhase(compose)

        exists.return_value = True
        cc.return_value = {"md5": "cafebabe", "sha256": "deadbeef"}

        phase.run()

        dump_checksums.assert_has_calls(
            [
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
            ],
            any_order=True,
        )
        cc.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/image.iso", ["md5", "sha256"]
        )
        compose.image.add_checksum.assert_has_calls(
            [mock.call(None, "sha256", "deadbeef"), mock.call(None, "md5", "cafebabe")],
            any_order=True,
        )

    @mock.patch("os.path.exists")
    @mock.patch("kobo.shortcuts.compute_file_checksums")
    @mock.patch("pungi.phases.image_checksum.dump_checksums")
    def test_checksum_one_file_custom_name(self, dump_checksums, cc, exists):
        compose = DummyCompose(
            self.topdir,
            {
                "media_checksums": ["sha256"],
                "media_checksum_one_file": True,
                "media_checksum_base_filename": "%(release_short)s-%(variant)s-%(version)s-%(date)s%(type_suffix)s.%(respin)s_%(label)s-%(dirname)s",  # noqa: E501
            },
        )
        compose.compose_label = "Alpha-1.0"

        phase = ImageChecksumPhase(compose)

        exists.return_value = True
        cc.return_value = {"sha256": "cafebabe"}

        phase.run()

        dump_checksums.assert_called_once_with(
            self.topdir
            + "/compose/Client/i386/iso/test-Client-1.0-20151203.t.0_Alpha-1.0-iso-CHECKSUM",  # noqa: E501
            set([("image.iso", 123, "sha256", "cafebabe")]),
        )
        cc.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/image.iso", ["sha256"]
        )
        compose.image.add_checksum.assert_called_once_with(None, "sha256", "cafebabe")

    @mock.patch("os.path.exists")
    @mock.patch("kobo.shortcuts.compute_file_checksums")
    @mock.patch("pungi.phases.image_checksum.dump_checksums")
    def test_checksum_save_individuals_custom_name(self, dump_checksums, cc, exists):
        compose = DummyCompose(
            self.topdir,
            {
                "media_checksums": ["md5", "sha256"],
                "media_checksum_base_filename": "%(release_short)s-%(variant)s-%(version)s-%(date)s%(type_suffix)s.%(respin)s",  # noqa: E501
            },
        )

        phase = ImageChecksumPhase(compose)

        exists.return_value = True
        cc.return_value = {"md5": "cafebabe", "sha256": "deadbeef"}

        phase.run()

        dump_checksums.assert_has_calls(
            [
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
                mock.call(
                    self.topdir
                    + "/compose/Client/i386/iso/test-Client-1.0-20151203.t.0-MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir
                    + "/compose/Client/i386/iso/test-Client-1.0-20151203.t.0-SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
            ],
            any_order=True,
        )
        cc.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/image.iso", ["md5", "sha256"]
        )
        compose.image.add_checksum.assert_has_calls(
            [mock.call(None, "sha256", "deadbeef"), mock.call(None, "md5", "cafebabe")],
            any_order=True,
        )

    @mock.patch("os.path.exists")
    @mock.patch("kobo.shortcuts.compute_file_checksums")
    @mock.patch("pungi.phases.image_checksum.dump_checksums")
    def test_checksum_save_individuals_custom_name_str_format(
        self, dump_checksums, cc, exists
    ):
        compose = DummyCompose(
            self.topdir,
            {
                "media_checksums": ["md5", "sha256"],
                "media_checksum_base_filename": "{release_short}-{variant}-{version}-{date}{type_suffix}.{respin}",  # noqa: E501
            },
        )

        phase = ImageChecksumPhase(compose)

        exists.return_value = True
        cc.return_value = {"md5": "cafebabe", "sha256": "deadbeef"}

        phase.run()

        dump_checksums.assert_has_calls(
            [
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir + "/compose/Client/i386/iso/image.iso.SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
                mock.call(
                    self.topdir
                    + "/compose/Client/i386/iso/test-Client-1.0-20151203.t.0-MD5SUM",
                    set([("image.iso", 123, "md5", "cafebabe")]),
                ),
                mock.call(
                    self.topdir
                    + "/compose/Client/i386/iso/test-Client-1.0-20151203.t.0-SHA256SUM",
                    set([("image.iso", 123, "sha256", "deadbeef")]),
                ),
            ],
            any_order=True,
        )
        cc.assert_called_once_with(
            self.topdir + "/compose/Client/i386/iso/image.iso", ["md5", "sha256"]
        )
        compose.image.add_checksum.assert_has_calls(
            [mock.call(None, "sha256", "deadbeef"), mock.call(None, "md5", "cafebabe")],
            any_order=True,
        )


class TestDumpChecksums(unittest.TestCase):
    def setUp(self):
        self.tmp_dir = tempfile.mkdtemp()

    def tearDown(self):
        shutil.rmtree(self.tmp_dir)

    def test_dump_checksums(self):
        dump_checksums(
            os.path.join(self.tmp_dir, "CHECKSUM"),
            [
                ("file2.iso", 456, "md5", "cafebabe"),
                ("file1.iso", 123, "md5", "abcdef"),
            ],
        )

        with open(os.path.join(self.tmp_dir, "CHECKSUM"), "r") as f:
            data = f.read().rstrip().split("\n")
            expected = [
                "# file1.iso: 123 bytes",
                "MD5 (file1.iso) = abcdef",
                "# file2.iso: 456 bytes",
                "MD5 (file2.iso) = cafebabe",
            ]
            self.assertEqual(expected, data)