"""Tests for mytoolkit.config.Config (hierarchical get/set/remove/export)."""

import pytest

from mytoolkit import config as config_mod
from mytoolkit.config import Config


@pytest.fixture()
def fresh_home(tmp_path, monkeypatch):
    """Give each test its own empty MYTOOLKIT_HOME."""
    home = tmp_path / "home"
    monkeypatch.setattr(config_mod, "CONFIG_PATH", home / "config.json")
    return home


def test_set_get_remove_roundtrip(fresh_home):
    c = Config()
    assert c.get("secrets.api_keys.ark") is None
    c.set("secrets.api_keys.ark", "sk-test")
    assert c.get("secrets.api_keys.ark") == "sk-test"
    # Persisted: a fresh instance sees the same value.
    assert Config().get("secrets.api_keys.ark") == "sk-test"
    assert c.remove("secrets.api_keys.ark") is True
    assert c.remove("secrets.api_keys.ark") is False
    assert c.get("secrets.api_keys.ark") is None


def test_nested_set_creates_intermediate_dicts(fresh_home):
    c = Config()
    c.set("connections.ssh.workstation.host", "10.0.0.5")
    assert c.get("connections.ssh.workstation.host") == "10.0.0.5"
    assert c.get("connections.ssh") == {"workstation": {"host": "10.0.0.5"}}


def test_remove_nested_cleans_leaf_but_keeps_parents(fresh_home):
    c = Config()
    c.set("a.b.c", 1)
    assert c.remove("a.b.c") is True
    assert c.get("a.b.c") is None
    assert c.get("a.b") == {}


def test_get_all_returns_flat_dot_paths(fresh_home):
    c = Config()
    c.set("secrets.api_keys.ark", "sk-ark")
    c.set("paths.cv", "/tmp/cv")
    assert c.get_all() == {
        "secrets.api_keys.ark": "sk-ark",
        "paths.cv": "/tmp/cv",
    }


def test_get_all_returns_copy(fresh_home):
    c = Config()
    c.set("k", "v")
    snapshot = c.get_all()
    snapshot["k"] = "mutated"
    assert c.get("k") == "v"


def test_export_prefix_and_underscore_replacement(fresh_home):
    c = Config()
    c.set("secrets.api_keys.ark", "sk-test")
    assert c.export() == {"MYCLI_SECRETS_API_KEYS_ARK": "sk-test"}


def test_resolve_key_env_overrides_config(fresh_home, monkeypatch):
    c = Config()
    c.set("secrets.api_keys.ark", "sk-config")
    monkeypatch.setenv("ARK_API_KEY", "sk-env")
    assert c.resolve_key("secrets.api_keys.ark", env_var="ARK_API_KEY") == "sk-env"


def test_resolve_key_falls_back_to_config(fresh_home):
    c = Config()
    c.set("secrets.api_keys.ark", "sk-config")
    assert c.resolve_key("secrets.api_keys.ark", env_var="MISSING_VAR") == "sk-config"


def test_corrupt_config_falls_back_to_empty(fresh_home):
    fresh_home.mkdir(parents=True)
    (fresh_home / "config.json").write_text("{not json")
    c = Config()
    assert c.get_all() == {}


def test_file_permissions_are_restrictive(fresh_home):
    c = Config()
    c.set("k", "v")
    assert (fresh_home / "config.json").stat().st_mode & 0o777 == 0o600