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

"""

 (c) 2015-2018 - Copyright Red Hat Inc

 Authors:

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

"""

from __future__ import unicode_literals, absolute_import

import json

import unittest

import shutil

import sys

import tempfile

import time

import os

import pygit2

from mock import patch, MagicMock

sys.path.insert(

    0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "..")

)

import pagure.lib.query

import tests

from pagure.lib.repo import PagureRepo

class PagureFlaskPrNoSourcestests(tests.Modeltests):

    """ Tests PR in pagure when the source is gone """

    maxDiff = None

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

    @patch("pagure.lib.notify.fedmsg_publish", MagicMock(return_value=True))

    def setUp(self):

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

        super(PagureFlaskPrNoSourcestests, self).setUp()

        tests.create_projects(self.session)

        tests.create_projects_git(os.path.join(self.path, "repos"), bare=True)

        # Create foo's fork of pingou's test project

        item = pagure.lib.model.Project(

            user_id=2,  # foo

            name="test",

            description="test project #1",

            hook_token="aaabbb",

            is_fork=True,

            parent_id=1,

        )

        self.session.add(item)

        self.session.commit()

        # Create the fork's git repo

        repo_path = os.path.join(self.path, "repos", item.path)

        pygit2.init_repository(repo_path, bare=True)

        project = pagure.lib.query.get_authorized_project(self.session, "test")

        fork = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        self.set_up_git_repo(repo=project, fork=fork)

        # Ensure things got setup straight

        project = pagure.lib.query.get_authorized_project(self.session, "test")

        self.assertEqual(len(project.requests), 1)

        # wait for the worker to process the task

        path = os.path.join(

            self.path, "repos", "test.git", "refs", "pull", "1", "head"

        )

        self.assertTrue(os.path.exists(path))

    def set_up_git_repo(self, repo, fork, branch_from="feature"):

        """ Set up the git repo and create the corresponding PullRequest

        object.

        """

        # Clone the main repo

        gitrepo = os.path.join(self.path, "repos", repo.path)

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

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

        clone_repo = pygit2.clone_repository(gitrepo, repopath)

        # Create a file in that git repo

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

            stream.write("foo\n bar")

        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")

        clone_repo.create_commit(

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

            author,

            committer,

            "Add sources file for testing",

            # binary string representing the tree object ID

            tree,

            # list of binary strings representing parents of the new commit

            [],

        )

        refname = "refs/heads/master:refs/heads/master"

        ori_remote = clone_repo.remotes[0]

        PagureRepo.push(ori_remote, refname)

        first_commit = clone_repo.revparse_single("HEAD")

        # Set the second repo

        repopath = os.path.join(self.path, "repos", fork.path)

        new_gitrepo = os.path.join(newpath, "fork_test")

        clone_repo = pygit2.clone_repository(repopath, new_gitrepo)

        # Add the main project as remote repo

        upstream_path = os.path.join(self.path, "repos", repo.path)

        remote = clone_repo.create_remote("upstream", upstream_path)

        remote.fetch()

        # Edit the sources file again

        with open(os.path.join(new_gitrepo, "sources"), "w") as stream:

            stream.write("foo\n bar\nbaz\n boose")

        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")

        clone_repo.create_commit(

            "refs/heads/%s" % branch_from,

            author,

            committer,

            "A commit on branch %s" % branch_from,

            tree,

            [first_commit.oid.hex],

        )

        refname = "refs/heads/%s" % (branch_from)

        ori_remote = clone_repo.remotes[0]

        PagureRepo.push(ori_remote, refname)

        # Create a PR for these changes

        project = pagure.lib.query.get_authorized_project(self.session, "test")

        req = pagure.lib.query.new_pull_request(

            session=self.session,

            repo_from=fork,

            branch_from=branch_from,

            repo_to=project,

            branch_to="master",

            title="PR from the %s branch" % branch_from,

            user="pingou",

        )

        self.session.commit()

        self.assertEqual(req.id, 1)

        self.assertEqual(req.title, "PR from the %s branch" % branch_from)

        shutil.rmtree(newpath)

    def test_request_pull_reference(self):

        """ Test if there is a reference created for a new PR. """

        project = pagure.lib.query.get_authorized_project(self.session, "test")

        self.assertEqual(len(project.requests), 1)

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

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(

            list(repo.listall_references()),

            ["refs/heads/master", "refs/pull/1/head"],

        )

    def test_request_pull_fork_reference(self):

        """ Test if there the references created on the fork. """

        project = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        self.assertEqual(len(project.requests), 0)

        gitrepo = os.path.join(self.path, "repos", project.path)

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(

            list(repo.listall_references()), ["refs/heads/feature"]

        )

    def test_accessing_pr_fork_deleted(self):

        """ Test accessing the PR if the fork has been deleted. """

        # Delete fork on disk

        project = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        repo_path = os.path.join(self.path, "repos", project.path)

        self.assertTrue(os.path.exists(repo_path))

        shutil.rmtree(repo_path)

        self.assertFalse(os.path.exists(repo_path))

        # Delete fork in the DB

        self.session.delete(project)

        self.session.commit()

        # View the pull-request

        output2 = self.app.get("/test/pull-request/1")

        self.assertEqual(output2.status_code, 200)

    def test_accessing_pr_patch_fork_deleted(self):

        """ Test accessing the PR's patch if the fork has been deleted. """

        # Delete fork on disk

        project = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        repo_path = os.path.join(self.path, "repos", project.path)

        self.assertTrue(os.path.exists(repo_path))

        shutil.rmtree(repo_path)

        self.assertFalse(os.path.exists(repo_path))

        # Delete fork in the DB

        self.session.delete(project)

        self.session.commit()

        # View the pull-request

        output = self.app.get("/test/pull-request/1.patch")

        self.assertEqual(output.status_code, 200)

        self.assertIn(

            "--- a/sources\n+++ b/sources\n@@ -1,2 +1,4 @@",

            output.get_data(as_text=True),

        )

    def test_accessing_pr_branch_deleted(self):

        """ Test accessing the PR if branch it originates from has been

        deleted. """

        project = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        # Check the branches before

        gitrepo = os.path.join(self.path, "repos", project.path)

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(

            list(repo.listall_references()), ["refs/heads/feature"]

        )

        # Delete branch of the fork

        user = tests.FakeUser(username="foo")

        with tests.user_set(self.app.application, user):

            output = self.app.post(

                "/fork/foo/test/b/feature/delete", follow_redirects=True

            )

            self.assertEqual(output.status_code, 200)

        # Check the branches after

        gitrepo = os.path.join(self.path, "repos", project.path)

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(list(repo.listall_references()), [])

        # View the pull-request

        output2 = self.app.get("/test/pull-request/1")

        self.assertEqual(output2.status_code, 200)

    def test_accessing_pr_patch_branch_deleted(self):

        """ Test accessing the PR's patch if branch it originates from has

        been deleted. """

        project = pagure.lib.query.get_authorized_project(

            self.session, "test", user="foo"

        )

        # Check the branches before

        gitrepo = os.path.join(self.path, "repos", project.path)

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(

            list(repo.listall_references()), ["refs/heads/feature"]

        )

        # Delete branch of the fork

        user = tests.FakeUser(username="foo")

        with tests.user_set(self.app.application, user):

            output = self.app.post(

                "/fork/foo/test/b/feature/delete", follow_redirects=True

            )

            self.assertEqual(output.status_code, 200)

        # Check the branches after

        gitrepo = os.path.join(self.path, "repos", project.path)

        repo = pygit2.Repository(gitrepo)

        self.assertEqual(list(repo.listall_references()), [])

        # View the pull-request

        output = self.app.get("/test/pull-request/1.patch")

        self.assertEqual(output.status_code, 200)

        self.assertIn(

            "--- a/sources\n+++ b/sources\n@@ -1,2 +1,4 @@",

            output.get_data(as_text=True),

        )

if __name__ == "__main__":

    unittest.main(verbosity=2)