# Copyright (C) 2008, 2009, 2010 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

import os

from bzrlib import shelf
from bzrlib.tests import TestCaseWithTransport
from bzrlib.tests.script import ScriptRunner


class TestShelveList(TestCaseWithTransport):

    def test_no_shelved_changes(self):
        tree = self.make_branch_and_tree('.')
        err = self.run_bzr('shelve --list')[1]
        self.assertEqual('No shelved changes.\n', err)

    def make_creator(self, tree):
        creator = shelf.ShelfCreator(tree, tree.basis_tree(), [])
        self.addCleanup(creator.finalize)
        return creator

    def test_shelve_one(self):
        tree = self.make_branch_and_tree('.')
        creator = self.make_creator(tree)
        shelf_id = tree.get_shelf_manager().shelve_changes(creator, 'Foo')
        out, err = self.run_bzr('shelve --list', retcode=1)
        self.assertEqual('', err)
        self.assertEqual('  1: Foo\n', out)

    def test_shelve_list_via_directory(self):
        tree = self.make_branch_and_tree('tree')
        creator = self.make_creator(tree)
        shelf_id = tree.get_shelf_manager().shelve_changes(creator, 'Foo')
        out, err = self.run_bzr('shelve -d tree --list', retcode=1)
        self.assertEqual('', err)
        self.assertEqual('  1: Foo\n', out)

    def test_shelve_no_message(self):
        tree = self.make_branch_and_tree('.')
        creator = self.make_creator(tree)
        shelf_id = tree.get_shelf_manager().shelve_changes(creator)
        out, err = self.run_bzr('shelve --list', retcode=1)
        self.assertEqual('', err)
        self.assertEqual('  1: <no message>\n', out)

    def test_shelf_order(self):
        tree = self.make_branch_and_tree('.')
        creator = self.make_creator(tree)
        tree.get_shelf_manager().shelve_changes(creator, 'Foo')
        creator = self.make_creator(tree)
        tree.get_shelf_manager().shelve_changes(creator, 'Bar')
        out, err = self.run_bzr('shelve --list', retcode=1)
        self.assertEqual('', err)
        self.assertEqual('  2: Bar\n  1: Foo\n', out)

    def test_shelve_destroy(self):
        tree = self.make_branch_and_tree('.')
        self.build_tree(['file'])
        tree.add('file')
        self.run_bzr('shelve --all --destroy')
        self.assertPathDoesNotExist('file')
        self.assertIs(None, tree.get_shelf_manager().last_shelf())

    def test_unshelve_keep(self):
        # https://bugs.launchpad.net/bzr/+bug/492091
        tree = self.make_branch_and_tree('.')
        # shelve apparently unhappy working with a tree with no root yet
        tree.commit('make root')
        self.build_tree(['file'])

        sr = ScriptRunner()
        sr.run_script(self, '''
$ bzr add file
adding file
$ bzr shelve --all -m Foo
2>Selected changes:
2>-D  file
2>Changes shelved with id "1".
$ bzr shelve --list
  1: Foo
$ bzr unshelve --keep
2>Using changes with id "1".
2>Message: Foo
2>+N  file
2>All changes applied successfully.
$ bzr shelve --list
  1: Foo
$ cat file
contents of file
''')

class TestUnshelvePreview(TestCaseWithTransport):
    
    def test_non_ascii(self):
        """Test that we can show a non-ascii diff that would result from unshelving"""
        
        init_content = u'Initial: \u0418\u0437\u043d\u0430\u0447\n'.encode('utf-8')
        more_content = u'More: \u0415\u0449\u0451\n'.encode('utf-8')
        next_content = init_content + more_content
        diff_part = '@@ -1,1 +1,2 @@\n %s+%s' % (init_content, more_content)
        
        tree = self.make_branch_and_tree('.')
        self.build_tree_contents([('a_file', init_content)])
        tree.add('a_file')
        tree.commit(message='committed')
        self.build_tree_contents([('a_file', next_content)])
        self.run_bzr(['shelve', '--all'])
        out, err = self.run_bzr(['unshelve', '--preview'], encoding='latin-1')
        
        self.assertContainsString(out, diff_part)


class TestShelveRelpath(TestCaseWithTransport):

    def test_shelve_in_subdir(self):
        tree = self.make_branch_and_tree('tree')
        self.build_tree(['tree/file', 'tree/dir/'])
        tree.add('file')
        os.chdir('tree/dir')
        self.run_bzr('shelve --all ../file')

    def test_shelve_via_directory(self):
        tree = self.make_branch_and_tree('tree')
        self.build_tree(['tree/file', 'tree/dir/'])
        tree.add('file')
        self.run_bzr('shelve -d tree/dir --all ../file')


class TestShelveUnshelve(TestCaseWithTransport):

    def test_directory(self):
        """Test --directory option"""
        tree = self.make_branch_and_tree('tree')
        self.build_tree_contents([('tree/a', 'initial\n')])
        tree.add('a')
        tree.commit(message='committed')
        self.build_tree_contents([('tree/a', 'initial\nmore\n')])
        self.run_bzr('shelve -d tree --all')
        self.assertFileEqual('initial\n', 'tree/a')
        self.run_bzr('unshelve --directory tree')
        self.assertFileEqual('initial\nmore\n', 'tree/a')
