"""Unit tests for the runner registry."""

from __future__ import annotations

from pathlib import Path

import pytest

from gitea_runner_manager.exceptions import GRMError
from gitea_runner_manager.registry import RunnerRegistry


class TestRunnerRegistry:
    def test_init_default_path(self) -> None:
        reg = RunnerRegistry()
        assert reg._path == Path.home() / ".local" / "share" / "grm" / "runners.json"

    def test_add_and_get(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add(
            "r1",
            host="10.0.0.1",
            user="ubuntu",
            key="/key",
            gitea_url="https://git.example.com",
            labels="docker:docker://alpine:latest",
        )
        info = reg.get("r1")
        assert info is not None
        assert info["host"] == "10.0.0.1"
        assert info["user"] == "ubuntu"
        assert info["key"] == "/key"
        assert info["gitea_url"] == "https://git.example.com"
        assert info["labels"] == "docker:docker://alpine:latest"
        assert "created_at" in info

    def test_add_without_labels(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add("r1", host="10.0.0.1", user="ubuntu")
        info = reg.get("r1")
        assert info is not None
        assert info["labels"] is None

    def test_get_missing(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        assert reg.get("missing") is None

    def test_remove(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add("r1", host="10.0.0.1", user="ubuntu")
        reg.remove("r1")
        assert reg.get("r1") is None

    def test_list(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add("r1", host="10.0.0.1", user="ubuntu")
        reg.add("r2", host="10.0.0.2", user="root")
        runners = reg.list()
        assert len(runners) == 2
        assert runners["r1"]["host"] == "10.0.0.1"
        assert runners["r2"]["host"] == "10.0.0.2"

    def test_update(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add("r1", host="10.0.0.1", user="ubuntu")
        reg.update("r1", host="10.0.0.2")
        info = reg.get("r1")
        assert info is not None
        assert info["host"] == "10.0.0.2"
        assert info["user"] == "ubuntu"

    def test_update_missing(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        with pytest.raises(GRMError, match="not found in registry"):
            reg.update("missing", host="10.0.0.1")

    def test_persistence(self, tmp_path: Path) -> None:
        path = tmp_path / "runners.json"
        reg1 = RunnerRegistry(path)
        reg1.add("r1", host="10.0.0.1", user="ubuntu")
        reg2 = RunnerRegistry(path)
        info = reg2.get("r1")
        assert info is not None
        assert info["host"] == "10.0.0.1"

    def test_corrupt_file(self, tmp_path: Path) -> None:
        path = tmp_path / "runners.json"
        path.write_text("not json")
        reg = RunnerRegistry(path)
        assert reg.list() == {}

    def test_list_returns_copy(self, tmp_path: Path) -> None:
        reg = RunnerRegistry(tmp_path / "runners.json")
        reg.add("r1", host="10.0.0.1", user="ubuntu")
        runners = reg.list()
        runners["r1"]["host"] = "modified"
        info = reg.get("r1")
        assert info is not None
        assert info["host"] == "10.0.0.1"