# Copyright (C) 2006, 2007 Canonical Ltd
# Authors: Aaron Bentley
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


import os
from StringIO import StringIO

from bzrlib import merge_directive
from bzrlib.bundle import serializer
from bzrlib.bzrdir import BzrDir
from bzrlib import tests


def read_bundle(fileobj):
    md = merge_directive.MergeDirective.from_lines(fileobj.readlines())
    return serializer.read_bundle(StringIO(md.get_raw_bundle()))


class TestSubmit(tests.TestCaseWithTransport):

    def make_trees(self):
        grandparent_tree = BzrDir.create_standalone_workingtree('grandparent')
        grandparent_tree.commit('initial commit', rev_id='revision1')
        parent_bzrdir = grandparent_tree.bzrdir.sprout('parent')
        parent_tree = parent_bzrdir.open_workingtree()
        parent_tree.commit('next commit', rev_id='revision2')
        branch_tree = parent_tree.bzrdir.sprout('branch').open_workingtree()
        branch_tree.commit('last commit', rev_id='revision3')

    def test_uses_parent(self):
        """Parent location is used as a basis by default"""
        self.make_trees()
        os.chdir('grandparent')
        errmsg = self.run_bzr('submit', retcode=3)[1]
        self.assertContainsRe(errmsg, 'No submit branch known or specified')
        os.chdir('../branch')
        stdout, stderr = self.run_bzr('submit')
        self.assertEqual(stderr.count('Using saved location'), 1)
        br = read_bundle(StringIO(stdout))
        self.assertRevisions(br, ['revision3'])

    def assertRevisions(self, bi, expected):
        self.assertEqual(set(r.revision_id for r in bi.revisions),
            set(expected))

    def test_uses_submit(self):
        """Submit location can be used and set"""
        self.make_trees()
        os.chdir('branch')
        br = read_bundle(StringIO(self.run_bzr('submit')[0]))
        self.assertRevisions(br, ['revision3'])
        br = read_bundle(StringIO(self.run_bzr('submit ../grandparent')[0]))
        self.assertRevisions(br, ['revision3', 'revision2'])
        # submit location should be auto-remembered
        br = read_bundle(StringIO(self.run_bzr('submit')[0]))
        self.assertRevisions(br, ['revision3', 'revision2'])
        self.run_bzr('submit ../parent')
        br = read_bundle(StringIO(self.run_bzr('bundle')[0]))
        self.assertRevisions(br, ['revision3', 'revision2'])
        self.run_bzr('submit ../parent --remember')
        br = read_bundle(StringIO(self.run_bzr('bundle')[0]))
        self.assertRevisions(br, ['revision3'])
        err = self.run_bzr('submit --remember', retcode=3)[1]
        self.assertContainsRe(err, 
                              '--remember requires a branch to be specified.')

    def test_revision_branch_interaction(self):
        self.make_trees()
        os.chdir('branch')
        bi = read_bundle(StringIO(self.run_bzr('bundle ../grandparent')[0]))
        self.assertRevisions(bi, ['revision3', 'revision2'])
        out = StringIO(self.run_bzr('submit ../grandparent -r -2')[0])
        bi = read_bundle(out)
        self.assertRevisions(bi, ['revision2'])
        sio = StringIO(self.run_bzr('submit -r -2..-1')[0])
        md = merge_directive.MergeDirective.from_lines(sio.readlines())
        self.assertEqual('revision2', md.base_revision_id)
        self.assertEqual('revision3', md.revision_id)
        sio.seek(0)
        bi = read_bundle(sio)
        self.assertRevisions(bi, ['revision2', 'revision3'])
        self.run_bzr('submit ../grandparent -r -2..-1')

    def test_output(self):
        # check output for consistency
        # win32 stdout converts LF to CRLF,
        # which would break patch-based bundles
        self.make_trees()        
        os.chdir('branch')
        stdout = self.run_bzr_subprocess('submit')[0]
        br = read_bundle(StringIO(stdout))
        self.assertRevisions(br, ['revision3'])

    def test_no_common_ancestor(self):
        foo = self.make_branch_and_tree('foo')
        foo.commit('rev a')
        bar = self.make_branch_and_tree('bar')
        bar.commit('rev b')
        os.chdir('foo')
        self.run_bzr('submit ../bar')

    def submit_directive(self, args):
        sio = StringIO(self.run_bzr(['submit'] + args)[0])
        return merge_directive.MergeDirective.from_lines(sio.readlines())

    def test_content_options(self):
        """--no-patch and --no-bundle should work and be independant"""
        self.make_trees()
        os.chdir('branch')
        md = self.submit_directive([])
        self.assertIsNot(None, md.bundle)
        self.assertIsNot(None, md.patch)
        md = self.submit_directive(['--no-patch'])
        self.assertIsNot(None, md.bundle)
        self.assertIs(None, md.patch)
        md = self.submit_directive(['--no-bundle', '.', '.'])
        self.assertIs(None, md.bundle)
        self.assertIsNot(None, md.patch)
        md = self.submit_directive(['--no-bundle', '--no-patch', '.', '.'])
        self.assertIs(None, md.bundle)
        self.assertIs(None, md.patch)

    def test_from_option(self):
        self.make_trees()
        self.run_bzr('submit', retcode=3)
        md = self.submit_directive(['--from', 'branch'])
        self.assertEqual('revision3', md.revision_id)
        md = self.submit_directive(['-f', 'branch'])
        self.assertEqual('revision3', md.revision_id)

    def test_output_option(self):
        self.make_trees()
        stdout = self.run_bzr('submit -f branch --output file1')[0]
        self.assertEqual('', stdout)
        md_file = open('file1', 'rb')
        self.addCleanup(md_file.close)
        self.assertContainsRe(md_file.read(), 'revision3')