import unittest
import unittest.mock
import requests
import json

from nixprstatus.pr import commit_in_branch, pr_merge_status, commits_since


def mocked_requests_get(*args, **kwargs):
    class MockedResponse:
        def __init__(self, json_data, status_code):
            self.json_data = json_data
            self.status_code = status_code

        def json(self):
            return json.loads(self.json_data)

        def raise_for_status(self):
            if self.status_code not in [200, 201]:
                raise requests.exceptions.HTTPError()

    if "pulls" in args[0]:
        pr = args[0].split("/")[-1]
        with open(f"tests/fixtures/pulls_{pr}.json") as f:
            data = f.read()
        return MockedResponse(data, 200)
    elif "compare" in args[0]:
        branch, commit_sha = args[0].split("/")[-1].split("...")
        with open(f"tests/fixtures/compare_{branch}_{commit_sha}.json") as f:
            data = f.read()
        return MockedResponse(data, 200)
    elif "comments" in args[0]:
        pr = args[0].split("/")[-2]
        with open(f"tests/fixtures/comments_{pr}.json") as f:
            data = f.read()
        return MockedResponse(data, 200)


class TestPRMergeStatus(unittest.TestCase):
    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_pr_merge_status_345583(self, mock_get):
        pr = 345583
        branches = ["master", "nixos-unstable", "nixos-24.05"]

        res = pr_merge_status(pr, branches, check_backport=False)
        self.assertTrue(res.merged)
        self.assertTrue(res.branches["master"])
        self.assertTrue(res.branches["nixos-unstable"])
        self.assertFalse(res.branches["nixos-24.05"])

    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_pr_merge_status_backport_345769(self, mock_get):
        pr = 345769
        branches = ["nixos-24.05"]

        res = pr_merge_status(pr, branches, check_backport=True)
        self.assertTrue(res.merged)
        self.assertTrue(res.branches["nixos-24.05 (#346022)"])

    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_pr_merge_status_title_345769(self, mock_get):
        pr = 345769
        branches = ["nixos-24.05"]
        expected_title = "Firefox: 130.0.1 -> 131.0; 128.2.0esr -> 128.3.0esr; 115.15.0esr -> 115.16.0esr"

        res = pr_merge_status(pr, branches, check_backport=True)
        self.assertEqual(res.title, expected_title)

    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_pr_merge_status_no_check_master_345583(self, mock_get):
        pr = 345583
        branches = ["master", "nixos-unstable", "nixos-24.05"]
        master_compare_url = "https://api.github.com/repos/NixOS/nixpkgs/compare/master...2c5fac3edf2d00d948253e392ec1604b29b38f14"

        res = pr_merge_status(pr, branches, check_backport=False)
        self.assertTrue(res.merged)
        self.assertTrue(res.branches["master"])

        urls_called = [call[0][0] for call in mock_get.call_args_list]
        self.assertFalse(master_compare_url in urls_called)


class TestCommitInBranch(unittest.TestCase):
    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_commit_in_branch_2c5fac3e(self, mock_get):
        commit_sha = "2c5fac3edf2d00d948253e392ec1604b29b38f14"

        res = commit_in_branch(commit_sha, "master")
        self.assertTrue(res)
        res = commit_in_branch(commit_sha, "nixos-24.05")
        self.assertFalse(res)


class TestCommitsSince(unittest.TestCase):
    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
    def test_commits_since_27e30d17(self, mock_get):
        commit_sha = "27e30d177e57d912d614c88c622dcfdb2e6e6515"

        res = commits_since("nixos-unstable", commit_sha)
        self.assertEqual(res, 795)