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

"""

 (c) 2017 - Copyright Red Hat Inc

 Authors:

   Pierre-Yves Chibon <pingou@pingoured.fr></pingou@pingoured.fr>

"""

__requires__ = ['SQLAlchemy >= 0.8']

import pkg_resources  # noqa

import json  # noqa

import unittest  # noqa

import shutil  # noqa

import sys  # noqa

import tempfile  # noqa

import time  # noqa

import os  # noqa

import pygit2  # noqa

from mock import patch, MagicMock  # noqa

sys.path.insert(0, os.path.join(os.path.dirname(

    os.path.abspath(__file__)), '..'))

import pagure.lib  # noqa

import tests  # noqa

from pagure.lib.repo import PagureRepo  # noqa

class PagureFlaskForkPrtests(tests.Modeltests):

    """ Tests for flask fork controller of pagure regarding diffing PRs """

    @patch('pagure.lib.notify.send_email', MagicMock(return_value=True))

    def setUp(self):

        """ Set up the environnment, ran before every tests. """

        super(PagureFlaskForkPrtests, self).setUp()

        # Create the main project in the DB

        item = pagure.lib.model.Project(

            user_id=1,  # pingou

            name='test',

            description='test project #1',

            hook_token='aaabbbccc',

        )

        item.close_status = [

            'Invalid', 'Insufficient data', 'Fixed', 'Duplicate']

        self.session.add(item)

        self.session.commit()

        # Create the fork

        item = pagure.lib.model.Project(

            user_id=1,  # pingou

            name='test',

            description='test project #1',

            hook_token='aaabbbcccdd',

            parent_id=1,

            is_fork=True,

        )

        item.close_status = [

            'Invalid', 'Insufficient data', 'Fixed', 'Duplicate']

        self.session.add(item)

        self.session.commit()

        # Create two git repos, one has 6 commits, the other 4 of which only

        # 1 isn't present in the first repo

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        pygit2.init_repository(gitrepo, bare=True)

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        pygit2.init_repository(gitrepo2, bare=True)

        newpath = tempfile.mkdtemp(prefix='pagure-fork-test')

        repopath = os.path.join(newpath, 'test')

        clone_repo = pygit2.clone_repository(gitrepo, repopath)

        # Do 3 commits to the main repo

        for i in range(3):

            with open(os.path.join(repopath, 'sources'), 'w') as stream:

                stream.write('foo%s\n bar%s\n' % (i, i))

            clone_repo.index.add('sources')

            clone_repo.index.write()

            parents = []

            try:

                last_commit = clone_repo.revparse_single('HEAD')

                parents = [last_commit.oid.hex]

            except KeyError:

                pass

            # Commits the files added

            tree = clone_repo.index.write_tree()

            author = pygit2.Signature(

                'Alice Author', 'alice@authors.tld')

            committer = pygit2.Signature(

                'Cecil Committer', 'cecil@committers.tld')

            clone_repo.create_commit(

                'refs/heads/master',  # the name of the reference to update

                author,

                committer,

                'Editing the file sources for testing #%s' % i,

                # binary string representing the tree object ID

                tree,

                # list of binary strings representing parents of the new commit

                parents

            )

        # Push to the main repo

        refname = 'refs/heads/master:refs/heads/master'

        ori_remote = clone_repo.remotes[0]

        PagureRepo.push(ori_remote, refname)

        # Push to the fork repo

        remote = clone_repo.create_remote('pingou_fork', gitrepo2)

        PagureRepo.push(remote, refname)

        # Do another 3 commits to the main repo

        for i in range(3, 6):

            with open(os.path.join(repopath, 'sources'), 'w') as stream:

                stream.write('foo%s\n bar%s\n' % (i, i))

            clone_repo.index.add('sources')

            clone_repo.index.write()

            last_commit = clone_repo.revparse_single('HEAD')

            # Commits the files added

            tree = clone_repo.index.write_tree()

            author = pygit2.Signature(

                'Alice Author', 'alice@authors.tld')

            committer = pygit2.Signature(

                'Cecil Committer', 'cecil@committers.tld')

            clone_repo.create_commit(

                'refs/heads/master',  # the name of the reference to update

                author,

                committer,

                'Editing the file sources for testing #%s' % i,

                # binary string representing the tree object ID

                tree,

                # list of binary strings representing parents of the new commit

                [last_commit.oid.hex]

            )

        # Push to the main repo

        refname = 'refs/heads/master:refs/heads/master'

        ori_remote = clone_repo.remotes[0]

        PagureRepo.push(ori_remote, refname)

        # Add two commits to the fork repo

        repopath = os.path.join(newpath, 'pingou_test')

        clone_repo = pygit2.clone_repository(gitrepo2, repopath)

        with open(os.path.join(repopath, 'sources'), 'w') as stream:

                stream.write('foo\n bar\n')

        clone_repo.index.add('sources')

        clone_repo.index.write()

        last_commit = clone_repo.revparse_single('HEAD')

        # Commits the files added

        tree = clone_repo.index.write_tree()

        author = pygit2.Signature(

            'Alice Author', 'alice@authors.tld')

        committer = pygit2.Signature(

            'Cecil Committer', 'cecil@committers.tld')

        last_commit = clone_repo.create_commit(

            'refs/heads/feature_foo',  # the name of the reference to update

            author,

            committer,

            'New edition on side branch of the file sources for testing',

            # binary string representing the tree object ID

            tree,

            # list of binary strings representing parents of the new commit

            [last_commit.oid.hex]

        )

        with open(os.path.join(repopath, 'sources'), 'w') as stream:

                stream.write('foo\n bar\nbaz\n')

        clone_repo.index.add('sources')

        clone_repo.index.write()

        # Commits the files added

        tree = clone_repo.index.write_tree()

        author = pygit2.Signature(

            'Alice Author', 'alice@authors.tld')

        committer = pygit2.Signature(

            'Cecil Committer', 'cecil@committers.tld')

        last_commit = clone_repo.create_commit(

            'refs/heads/feature_foo',  # the name of the reference to update

            author,

            committer,

            'Second edit on side branch of the file sources for testing',

            # binary string representing the tree object ID

            tree,

            # list of binary strings representing parents of the new commit

            [last_commit.hex]

        )

        # Push to the fork repo

        ori_remote = clone_repo.remotes[0]

        refname = 'refs/heads/feature_foo:refs/heads/feature_foo'

        PagureRepo.push(ori_remote, refname)

        shutil.rmtree(newpath)

        # Create the PR between the two repos

        repo = pagure.get_authorized_project(self.session, 'test')

        forked_repo = pagure.get_authorized_project(

            self.session, 'test', user='pingou')

        req = pagure.lib.new_pull_request(

            session=self.session,

            repo_from=forked_repo,

            branch_from='feature_foo',

            repo_to=repo,

            branch_to='master',

            title='test pull-request',

            user='pingou',

            requestfolder=None,

        )

        self.assertEqual(req.id, 1)

        self.assertEqual(req.title, 'test pull-request')

    def test_get_pr_info(self):

        """ Test pagure.ui.fork._get_pr_info """

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        diff, diff_commits, orig_commit = pagure.lib.git.get_diff_info(

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            branch_from='feature_foo',

            branch_to='master'

        )

        self.assertEqual(len(diff_commits), 2)

        self.assertEqual(

            diff_commits[0].message,

            'Second edit on side branch of the file sources for testing'

        )

        self.assertEqual(

            diff_commits[1].message,

            'New edition on side branch of the file sources for testing'

        )

        self.assertEqual(

            orig_commit.message,

            'Editing the file sources for testing #5'

        )

    def test_get_pr_info_raises(self):

        """ Test pagure.ui.fork._get_pr_info """

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        self.assertRaises(

            pagure.exceptions.BranchNotFoundException,

            pagure.lib.git.get_diff_info,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            branch_from='feature',

            branch_to='master'

        )

        self.assertRaises(

            pagure.exceptions.BranchNotFoundException,

            pagure.lib.git.get_diff_info,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            branch_from='feature_foo',

            branch_to='bar'

        )

    def test_diff_pull_request(self):

        """ Test pagure.lib.git.diff_pull_request """

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        request = pagure.lib.search_pull_requests(

            self.session, requestid=1, project_id=1)

        diff_commits, diff = pagure.lib.git.diff_pull_request(

            self.session,

            request=request,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            requestfolder=None,

            with_diff=True

        )

        self.assertEqual(len(diff_commits), 2)

        self.assertEqual(

            diff_commits[0].message,

            'Second edit on side branch of the file sources for testing'

        )

        self.assertEqual(

            diff_commits[1].message,

            'New edition on side branch of the file sources for testing'

        )

        # Check that the PR has its PR refs

        # we don't know the task id but we'll give it 30 sec to finish

        cnt = 0

        repo = PagureRepo(gitrepo)

        while 1:

            if 'refs/pull/1/head' in list(repo.listall_references()):

                break

            cnt += 1

            if cnt == 60:

                break

            time.sleep(0.5)

        self.assertTrue(cnt < 60)

        pr_ref = repo.lookup_reference('refs/pull/1/head')

        commit = pr_ref.get_object()

        self.assertEqual(

            commit.oid.hex,

            diff_commits[0].oid.hex

        )

    def test_diff_pull_request_updated(self):

        """ Test that calling pagure.lib.git.diff_pull_request on an updated

        PR updates the PR reference

        """

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        request = pagure.lib.search_pull_requests(

            self.session, requestid=1, project_id=1)

        # Get the diff corresponding to the PR and check its ref

        diff_commits, diff = pagure.lib.git.diff_pull_request(

            self.session,

            request=request,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            requestfolder=None,

            with_diff=True

        )

        self.assertEqual(len(diff_commits), 2)

        # Check that the PR has its PR refs

        # we don't know the task id but we'll give it 30 sec to finish

        cnt = 0

        repo = PagureRepo(gitrepo)

        while 1:

            if 'refs/pull/1/head' in list(repo.listall_references()):

                break

            cnt += 1

            if cnt == 60:

                break

            time.sleep(0.5)

        self.assertTrue(cnt < 60)

        pr_ref = repo.lookup_reference('refs/pull/1/head')

        commit = pr_ref.get_object()

        self.assertEqual(

            commit.oid.hex,

            diff_commits[0].oid.hex

        )

        # Add a new commit on the fork

        repopath = os.path.join(self.path, 'pingou_test2')

        clone_repo = pygit2.clone_repository(

            gitrepo2, repopath, checkout_branch='feature_foo')

        with open(os.path.join(repopath, 'sources'), 'w') as stream:

                stream.write('foo\n bar\nbaz\nhey there\n')

        clone_repo.index.add('sources')

        clone_repo.index.write()

        last_commit = clone_repo.lookup_branch('feature_foo').get_object()

        # Commits the files added

        tree = clone_repo.index.write_tree()

        author = pygit2.Signature(

            'Alice Author', 'alice@authors.tld')

        committer = pygit2.Signature(

            'Cecil Committer', 'cecil@committers.tld')

        last_commit = clone_repo.create_commit(

            'refs/heads/feature_foo',  # the name of the reference to update

            author,

            committer,

            'Third edit on side branch of the file sources for testing',

            # binary string representing the tree object ID

            tree,

            # list of binary strings representing parents of the new commit

            [last_commit.oid.hex]

        )

        # Push to the fork repo

        ori_remote = clone_repo.remotes[0]

        refname = 'refs/heads/feature_foo:refs/heads/feature_foo'

        PagureRepo.push(ori_remote, refname)

        # Get the new diff for that PR and check its new ref

        diff_commits, diff = pagure.lib.git.diff_pull_request(

            self.session,

            request=request,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            requestfolder=None,

            with_diff=True

        )

        self.assertEqual(len(diff_commits), 3)

        # Check that the PR has its PR refs

        # we don't know the task id but we'll give it 30 sec to finish

        cnt = 0

        repo = PagureRepo(gitrepo)

        while 1:

            if 'refs/pull/1/head' in list(repo.listall_references()):

                break

            cnt += 1

            if cnt == 60:

                break

            time.sleep(0.5)

        self.assertTrue(cnt < 60)

        pr_ref = repo.lookup_reference('refs/pull/1/head')

        commit2 = pr_ref.get_object()

        self.assertEqual(

            commit2.oid.hex,

            diff_commits[0].oid.hex

        )

        self.assertNotEqual(

            commit.oid.hex,

            commit2.oid.hex,

        )

    def test_two_diff_pull_request_sequentially(self):

        """ Test calling pagure.lib.git.diff_pull_request twice returns

        the same data

        """

        gitrepo = os.path.join(self.path, 'repos', 'test.git')

        gitrepo2 = os.path.join(

            self.path, 'repos', 'forks', 'pingou', 'test.git')

        request = pagure.lib.search_pull_requests(

            self.session, requestid=1, project_id=1)

        # Get the diff corresponding to the PR and check its ref

        diff_commits, diff = pagure.lib.git.diff_pull_request(

            self.session,

            request=request,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            requestfolder=None,

            with_diff=True

        )

        self.assertEqual(len(diff_commits), 2)

        # Check that the PR has its PR refs

        # we don't know the task id but we'll give it 30 sec to finish

        cnt = 0

        repo = PagureRepo(gitrepo)

        while 1:

            if 'refs/pull/1/head' in list(repo.listall_references()):

                break

            cnt += 1

            if cnt == 60:

                break

            time.sleep(0.5)

        self.assertTrue(cnt < 60)

        pr_ref = repo.lookup_reference('refs/pull/1/head')

        commit = pr_ref.get_object()

        self.assertEqual(

            commit.oid.hex,

            diff_commits[0].oid.hex

        )

        # Run diff_pull_request a second time

        diff_commits2, diff = pagure.lib.git.diff_pull_request(

            self.session,

            request=request,

            repo_obj=PagureRepo(gitrepo2),

            orig_repo=PagureRepo(gitrepo),

            requestfolder=None,

            with_diff=True

        )

        self.assertEqual(len(diff_commits2), 2)

        self.assertEqual(

            [d.oid.hex for d in diff_commits2],

            [d.oid.hex for d in diff_commits])

        # Check that the PR has its PR refs

        # we don't know the task id but we'll give it 30 sec to finish

        cnt = 0

        repo = PagureRepo(gitrepo)

        while 1:

            if 'refs/pull/1/head' in list(repo.listall_references()):

                break

            cnt += 1

            if cnt == 60:

                break

            time.sleep(0.5)

        self.assertTrue(cnt < 60)

        pr_ref = repo.lookup_reference('refs/pull/1/head')

        commit2 = pr_ref.get_object()

        self.assertEqual(

            commit2.oid.hex,

            diff_commits[0].oid.hex

        )

        self.assertEqual(

            commit.oid.hex,

            commit2.oid.hex

        )

if __name__ == '__main__':

    unittest.main(verbosity=2)