"""Tests for `muse hooks install/uninstall/status` — musehub#192 Phase 2.

Phase 1's `muse hooks list` is covered separately in tests/test_cmd_hooks.py.
"""

from __future__ import annotations

import json
import pathlib

from tests.cli_test_helper import CliRunner

runner = CliRunner()


def _invoke(path: pathlib.Path, args: list[str]):
    import os
    saved = os.getcwd()
    try:
        os.chdir(path)
        return runner.invoke(None, args)
    finally:
        os.chdir(saved)


def _init_repo(path: pathlib.Path, domain: str = "code") -> None:
    r = _invoke(path, ["init", "--domain", domain])
    assert r.exit_code == 0, r.output


def _write_hooks(path: pathlib.Path, content: str) -> None:
    (path / ".musehooks.toml").write_text(content, encoding="utf-8")


class TestHooksInstall:
    def test_install_exits_0_and_marks_installed(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, '[pre-commit]\ncommands = ["echo hi"]\n')
        r = _invoke(tmp_path, ["hooks", "install", "--json"])
        assert r.exit_code == 0, r.output
        data = json.loads(r.output)
        assert data["installed"] is True

        status_r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert json.loads(status_r.output)["state"] == "installed"

    def test_install_twice_is_still_success(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, '[pre-commit]\ncommands = ["echo hi"]\n')
        assert _invoke(tmp_path, ["hooks", "install"]).exit_code == 0
        assert _invoke(tmp_path, ["hooks", "install"]).exit_code == 0

    def test_install_not_a_repo_exits_2(self, tmp_path: pathlib.Path) -> None:
        r = _invoke(tmp_path, ["hooks", "install", "--json"])
        assert r.exit_code == 2


class TestHooksUninstall:
    def test_uninstall_exits_0_and_clears_state(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, '[pre-commit]\ncommands = ["echo hi"]\n')
        _invoke(tmp_path, ["hooks", "install"])
        r = _invoke(tmp_path, ["hooks", "uninstall", "--json"])
        assert r.exit_code == 0, r.output
        data = json.loads(r.output)
        assert data["installed"] is False

        status_r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert json.loads(status_r.output)["state"] == "defined_not_installed"

    def test_uninstall_when_never_installed_is_still_success(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        r = _invoke(tmp_path, ["hooks", "uninstall", "--json"])
        assert r.exit_code == 0, r.output


class TestHooksStatus:
    def test_not_defined_state(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert r.exit_code == 0, r.output
        assert json.loads(r.output)["state"] == "not_defined"

    def test_defined_not_installed_state(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, '[pre-commit]\ncommands = ["echo hi"]\n')
        r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert json.loads(r.output)["state"] == "defined_not_installed"

    def test_text_mode_mentions_install_command_when_not_installed(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, '[pre-commit]\ncommands = ["echo hi"]\n')
        r = _invoke(tmp_path, ["hooks", "status"])
        assert r.exit_code == 0, r.output
        assert "muse hooks install" in r.output

    def test_malformed_toml_exits_1(self, tmp_path: pathlib.Path) -> None:
        _init_repo(tmp_path)
        _write_hooks(tmp_path, "[pre-commit\ncommands = [")
        r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert r.exit_code == 1

    def test_status_not_a_repo_exits_2(self, tmp_path: pathlib.Path) -> None:
        r = _invoke(tmp_path, ["hooks", "status", "--json"])
        assert r.exit_code == 2