#!/usr/bin/env python

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.

import os
import shutil
import tempfile
import unittest

import mozunit
from manifestparser import ManifestParser, convert

here = os.path.dirname(os.path.abspath(__file__))

# In some cases tempfile.mkdtemp() may returns a path which contains
# symlinks. Some tests here will then break, as the manifestparser.convert
# function returns paths that does not contains symlinks.
#
# Workaround is to use the following function, if absolute path of temp dir
# must be compared.


def create_realpath_tempdir():
    """
    Create a tempdir without symlinks.
    """
    return os.path.realpath(tempfile.mkdtemp())


class TestDirectoryConversion(unittest.TestCase):
    """test conversion of a directory tree to a manifest structure"""

    def create_stub(self, directory=None):
        """stub out a directory with files in it"""

        files = ("foo", "bar", "fleem")
        if directory is None:
            directory = create_realpath_tempdir()
        for i in files:
            open(os.path.join(directory, i), "w").write(i)
        subdir = os.path.join(directory, "subdir")
        os.mkdir(subdir)
        open(os.path.join(subdir, "subfile"), "w").write("baz")
        return directory

    def test_directory_to_manifest(self):
        """
        Test our ability to convert a static directory structure to a
        manifest.
        """

        # create a stub directory
        stub = self.create_stub()
        try:
            stub = stub.replace(os.path.sep, "/")
            self.assertTrue(os.path.exists(stub) and os.path.isdir(stub))

            # Make a manifest for it
            manifest = convert([stub])
            out_tmpl = """[%(stub)s/bar]

[%(stub)s/fleem]

[%(stub)s/foo]

[%(stub)s/subdir/subfile]

"""  # noqa
            self.assertEqual(str(manifest), out_tmpl % dict(stub=stub))
        except BaseException:
            raise
        finally:
            shutil.rmtree(stub)  # cleanup

    def test_convert_directory_manifests_in_place(self):
        """
        keep the manifests in place
        """

        stub = self.create_stub()
        try:
            ManifestParser.populate_directory_manifests([stub], filename="manifest.ini")
            self.assertEqual(
                sorted(os.listdir(stub)),
                ["bar", "fleem", "foo", "manifest.ini", "subdir"],
            )
            parser = ManifestParser()
            parser.read(os.path.join(stub, "manifest.ini"))
            self.assertEqual(
                [i["name"] for i in parser.tests], ["subfile", "bar", "fleem", "foo"]
            )
            parser = ManifestParser()
            parser.read(os.path.join(stub, "subdir", "manifest.ini"))
            self.assertEqual(len(parser.tests), 1)
            self.assertEqual(parser.tests[0]["name"], "subfile")
        except BaseException:
            raise
        finally:
            shutil.rmtree(stub)

    def test_manifest_ignore(self):
        """test manifest `ignore` parameter for ignoring directories"""

        stub = self.create_stub()
        try:
            ManifestParser.populate_directory_manifests(
                [stub], filename="manifest.ini", ignore=("subdir",)
            )
            parser = ManifestParser()
            parser.read(os.path.join(stub, "manifest.ini"))
            self.assertEqual([i["name"] for i in parser.tests], ["bar", "fleem", "foo"])
            self.assertFalse(
                os.path.exists(os.path.join(stub, "subdir", "manifest.ini"))
            )
        except BaseException:
            raise
        finally:
            shutil.rmtree(stub)

    def test_pattern(self):
        """test directory -> manifest with a file pattern"""

        stub = self.create_stub()
        try:
            parser = convert([stub], pattern="f*", relative_to=stub)
            self.assertEqual([i["name"] for i in parser.tests], ["fleem", "foo"])

            # test multiple patterns
            parser = convert([stub], pattern=("f*", "s*"), relative_to=stub)
            self.assertEqual(
                [i["name"] for i in parser.tests], ["fleem", "foo", "subdir/subfile"]
            )
        except BaseException:
            raise
        finally:
            shutil.rmtree(stub)

    def test_update(self):
        """
        Test our ability to update tests from a manifest and a directory of
        files
        """

        # boilerplate
        tempdir = create_realpath_tempdir()
        for i in range(10):
            open(os.path.join(tempdir, str(i)), "w").write(str(i))

        # otherwise empty directory with a manifest file
        newtempdir = create_realpath_tempdir()
        manifest_file = os.path.join(newtempdir, "manifest.ini")
        manifest_contents = str(convert([tempdir], relative_to=tempdir))
        with open(manifest_file, "w") as f:
            f.write(manifest_contents)

        # get the manifest
        manifest = ManifestParser(manifests=(manifest_file,))

        # All of the tests are initially missing:
        paths = [str(i) for i in range(10)]
        self.assertEqual([i["name"] for i in manifest.missing()], paths)

        # But then we copy one over:
        self.assertEqual(manifest.get("name", name="1"), ["1"])
        manifest.update(tempdir, name="1")
        self.assertEqual(sorted(os.listdir(newtempdir)), ["1", "manifest.ini"])

        # Update that one file and copy all the "tests":
        open(os.path.join(tempdir, "1"), "w").write("secret door")
        manifest.update(tempdir)
        self.assertEqual(
            sorted(os.listdir(newtempdir)),
            ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "manifest.ini"],
        )
        self.assertEqual(
            open(os.path.join(newtempdir, "1")).read().strip(), "secret door"
        )

        # clean up:
        shutil.rmtree(tempdir)
        shutil.rmtree(newtempdir)


if __name__ == "__main__":
    mozunit.main()