from __future__ import annotations

from collections.abc import Generator
from pathlib import Path
from unittest.mock import patch

import pygit2
import pytest
from fastapi.testclient import TestClient

from pygitweb.auth_config import AuthConfig, LocalUser
from pygitweb.config import settings
from pygitweb.conftest import client_as_user
from pygitweb.main import app
from pygitweb.permissions import Permission, permission_key, permissions_with_defaults

_HOOKS_AUTH = AuthConfig(
    auth_mode="local",
    local_users=[LocalUser(user="admin", password="secret"), LocalUser(user="viewer", password="secret")],
    oauth_permissions=permissions_with_defaults({
        permission_key(Permission.HOOKS, "demo"): ["admin"],
    }),
)


def _create_initial_commit(repo: pygit2.Repository, repo_dir: Path) -> None:
    (repo_dir / "README.md").write_text("seed\n", encoding="utf-8")
    index = repo.index
    index.add("README.md")
    index.write()
    tree = index.write_tree()
    sig = pygit2.Signature("tester", "tester@example.com")
    repo.create_commit("HEAD", sig, sig, "initial", tree, [])


@pytest.fixture
def hook_env(tmp_path: Path) -> Generator[dict[str, str], None, None]:
    root = tmp_path / "root"
    root.mkdir()
    repo_dir = root / "demo"
    repo_dir.mkdir()
    _create_initial_commit(pygit2.init_repository(str(repo_dir), bare=False), repo_dir)
    with (
        patch.object(settings, "PROJECTROOT", str(root)),
        patch.object(settings, "PROJECTS_LIST", str(root)),
        patch.object(settings, "PROJECT_MAXDEPTH", 3),
        patch.object(settings, "STRICT_EXPORT", False),
        patch.object(settings, "EXPORT_OK", ""),
        patch.object(settings, "LIST_ALL", True),
        patch.object(settings, "MAXLOAD", None),
        patch("pygitweb.auth_config.auth_config", _HOOKS_AUTH),
        patch("pygitweb.auth.auth_config", _HOOKS_AUTH),
        patch("pygitweb.main.auth_config", _HOOKS_AUTH),
    ):
        yield {"project": "demo"}


@pytest.fixture
def client() -> Generator[TestClient, None, None]:
    with TestClient(app) as c:
        yield c


def test_hook_check_open_when_auth_disabled(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", False):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "check"},
        )
    assert r.status_code == 200


def test_hook_add_open_when_auth_disabled(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", False):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "add"},
        )
    assert r.status_code == 200


def test_hook_add_401_without_login(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", True):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "add"},
        )
    assert r.status_code == 404


def test_hook_add_allowed_with_grant(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", True), client_as_user(client, "admin"):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "add"},
        )
    assert r.status_code == 200


def test_hook_add_forbidden_without_grant(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", True), client_as_user(client, "viewer"):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "add"},
        )
    assert r.status_code == 403


def test_hook_check_allowed_without_hooks_grant(client: TestClient, hook_env: dict[str, str]) -> None:
    with patch.object(settings, "AUTH", True), client_as_user(client, "viewer"):
        r = client.post(
            f"/project/{hook_env['project']}/hook",
            params={"name": "post-receive.notify", "op": "check"},
        )
    assert r.status_code == 200