# -*- coding: UTF-8 -*-
#
# Copyright 2010-2015 The pygit2 contributors
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
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# the authors give you unlimited permission to link the compiled
# version of this file into combinations with other programs,
# and to distribute those combinations without any restriction
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# a combined executable.)
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
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# along with this program; see the file COPYING.  If not, write to
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"""Tests for Index files."""

from __future__ import absolute_import
from __future__ import unicode_literals
import os
import unittest
import tempfile

import pygit2
from pygit2 import Repository, Index
from . import utils


class IndexBareTest(utils.BareRepoTestCase):

    def test_bare(self):
        index = self.repo.index
        self.assertEqual(len(index), 0)


class IndexTest(utils.RepoTestCase):

    def test_index(self):
        self.assertNotEqual(None, self.repo.index)

    def test_read(self):
        index = self.repo.index
        self.assertEqual(len(index), 2)

        self.assertRaises(TypeError, lambda: index[()])
        self.assertRaisesWithArg(ValueError, -4, lambda: index[-4])
        self.assertRaisesWithArg(KeyError, 'abc', lambda: index['abc'])

        sha = 'a520c24d85fbfc815d385957eed41406ca5a860b'
        self.assertTrue('hello.txt' in index)
        self.assertEqual(index['hello.txt'].hex, sha)
        self.assertEqual(index['hello.txt'].path, 'hello.txt')
        self.assertEqual(index[1].hex, sha)

    def test_add(self):
        index = self.repo.index

        sha = '0907563af06c7464d62a70cdd135a6ba7d2b41d8'
        self.assertFalse('bye.txt' in index)
        index.add('bye.txt')
        self.assertTrue('bye.txt' in index)
        self.assertEqual(len(index), 3)
        self.assertEqual(index['bye.txt'].hex, sha)

    def test_add_all(self):
        self.test_clear()

        index = self.repo.index

        sha_bye = '0907563af06c7464d62a70cdd135a6ba7d2b41d8'
        sha_hello = 'a520c24d85fbfc815d385957eed41406ca5a860b'

        index.add_all(['*.txt'])

        self.assertTrue('bye.txt' in index)
        self.assertTrue('hello.txt' in index)

        self.assertEqual(index['bye.txt'].hex, sha_bye)
        self.assertEqual(index['hello.txt'].hex, sha_hello)

        self.test_clear()

        index.add_all(['bye.t??', 'hello.*'])

        self.assertTrue('bye.txt' in index)
        self.assertTrue('hello.txt' in index)

        self.assertEqual(index['bye.txt'].hex, sha_bye)
        self.assertEqual(index['hello.txt'].hex, sha_hello)

        self.test_clear()

        index.add_all(['[byehlo]*.txt'])

        self.assertTrue('bye.txt' in index)
        self.assertTrue('hello.txt' in index)

        self.assertEqual(index['bye.txt'].hex, sha_bye)
        self.assertEqual(index['hello.txt'].hex, sha_hello)

    def test_clear(self):
        index = self.repo.index
        self.assertEqual(len(index), 2)
        index.clear()
        self.assertEqual(len(index), 0)

    def test_write(self):
        index = self.repo.index
        index.add('bye.txt')
        index.write()

        index.clear()
        self.assertFalse('bye.txt' in index)
        index.read()
        self.assertTrue('bye.txt' in index)


    def test_read_tree(self):
        tree_oid = '68aba62e560c0ebc3396e8ae9335232cd93a3f60'
        # Test reading first tree
        index = self.repo.index
        self.assertEqual(len(index), 2)
        index.read_tree(tree_oid)
        self.assertEqual(len(index), 1)
        # Test read-write returns the same oid
        oid = index.write_tree()
        self.assertEqual(oid.hex, tree_oid)
        # Test the index is only modified in memory
        index.read()
        self.assertEqual(len(index), 2)


    def test_write_tree(self):
        oid = self.repo.index.write_tree()
        self.assertEqual(oid.hex, 'fd937514cb799514d4b81bb24c5fcfeb6472b245')

    def test_iter(self):
        index = self.repo.index
        n = len(index)
        self.assertEqual(len(list(index)), n)

        # Compare SHAs, not IndexEntry object identity
        entries = [index[x].hex for x in range(n)]
        self.assertEqual(list(x.hex for x in index), entries)

    def test_mode(self):
        """
            Testing that we can access an index entry mode.
        """
        index = self.repo.index

        hello_mode = index['hello.txt'].mode
        self.assertEqual(hello_mode, 33188)

    def test_bare_index(self):
        index = pygit2.Index(os.path.join(self.repo.path, 'index'))
        self.assertEqual([x.hex for x in index],
                         [x.hex for x in self.repo.index])

        self.assertRaises(pygit2.GitError, lambda: index.add('bye.txt'))

    def test_remove(self):
        index = self.repo.index
        self.assertTrue('hello.txt' in index)
        index.remove('hello.txt')
        self.assertFalse('hello.txt' in index)

    def test_change_attributes(self):
        index = self.repo.index
        entry = index['hello.txt']
        ign_entry = index['.gitignore']
        self.assertNotEqual(ign_entry.id, entry.id)
        self.assertNotEqual(entry.mode, pygit2.GIT_FILEMODE_BLOB_EXECUTABLE)
        entry.path = 'foo.txt'
        entry.id = ign_entry.id
        entry.mode = pygit2.GIT_FILEMODE_BLOB_EXECUTABLE
        self.assertEqual('foo.txt', entry.path)
        self.assertEqual(ign_entry.id, entry.id)
        self.assertEqual(pygit2.GIT_FILEMODE_BLOB_EXECUTABLE, entry.mode)

    def test_write_tree_to(self):
        with utils.TemporaryRepository(('tar', 'emptyrepo')) as path:
            nrepo = Repository(path)
            id = self.repo.index.write_tree(nrepo)
            self.assertNotEqual(None, nrepo[id])

class IndexEntryTest(utils.RepoTestCase):

    def test_create_entry(self):
        index = self.repo.index
        hello_entry = index['hello.txt']
        entry = pygit2.IndexEntry('README.md', hello_entry.id, hello_entry.mode)
        index.add(entry)
        tree_id = index.write_tree()
        self.assertEqual('60e769e57ae1d6a2ab75d8d253139e6260e1f912', str(tree_id))

class StandaloneIndexTest(utils.RepoTestCase):

    def test_create_empty(self):
        index = Index()

    def test_create_empty_read_tree_as_string(self):
        index = Index()
        # no repo associated, so we don't know where to read from
        self.assertRaises(TypeError, index, 'read_tree', 'fd937514cb799514d4b81bb24c5fcfeb6472b245')

    def test_create_empty_read_tree(self):
        index = Index()
        index.read_tree(self.repo['fd937514cb799514d4b81bb24c5fcfeb6472b245'])

if __name__ == '__main__':
    unittest.main()
