"""Unit tests for devx.utils.jinja."""

from __future__ import annotations

import jinja2

from devx.utils.jinja import (
    make_env,
    make_value_env,
    regex_escape,
    regex_replace,
    regex_search,
    render_manifest_values,
    render_template,
    render_value,
    to_bool,
    to_json,
)


class TestFilters:
    def test_to_json(self):
        assert to_json({"a": 1}) == '{"a": 1}'

    def test_to_json_list(self):
        assert to_json([1, 2]) == "[1, 2]"

    def test_to_bool_true(self):
        assert to_bool(True) is True

    def test_to_bool_false(self):
        assert to_bool(False) is False

    def test_to_bool_string_true(self):
        assert to_bool("yes") is True

    def test_to_bool_string_false(self):
        assert to_bool("false") is False

    def test_to_bool_empty_string(self):
        assert to_bool("") is False

    def test_to_bool_none(self):
        assert to_bool(None) is False

    def test_to_bool_int(self):
        assert to_bool(1) is True
        assert to_bool(0) is False

    def test_regex_replace(self):
        assert regex_replace("hello world", "world", "there") == "hello there"

    def test_regex_replace_with_pattern(self):
        assert regex_replace("abc123", r"\d+", "X") == "abcX"

    def test_regex_escape(self):
        assert regex_escape("a.b*c") == "a\\.b\\*c"

    def test_regex_search_found(self):
        assert regex_search("hello world", r"world") == "world"

    def test_regex_search_not_found(self):
        assert regex_search("hello", r"world") is None

    def test_regex_search_group(self):
        assert regex_search("abc123", r"\d+") == "123"


class TestMakeEnv:
    def test_returns_environment(self, tmp_path):
        (tmp_path / "test.j2").write_text("hello {{ name }}")
        env = make_env(str(tmp_path))
        assert isinstance(env, jinja2.Environment)

    def test_has_filters(self, tmp_path):
        env = make_env(str(tmp_path))
        assert "to_json" in env.filters
        assert "bool" in env.filters
        assert "regex_replace" in env.filters
        assert "regex_escape" in env.filters
        assert "regex_search" in env.filters

    def test_cached(self, tmp_path):
        env1 = make_env(str(tmp_path))
        env2 = make_env(str(tmp_path))
        assert env1 is env2

    def test_auto_reload_disabled(self, tmp_path):
        env = make_env(str(tmp_path))
        assert env.auto_reload is False

    def test_strict_undefined(self, tmp_path):
        env = make_env(str(tmp_path))
        assert env.undefined is jinja2.StrictUndefined


class TestMakeValueEnv:
    def test_returns_environment(self):
        env = make_value_env()
        assert isinstance(env, jinja2.Environment)

    def test_chainable_undefined(self):
        env = make_value_env()
        assert env.undefined is jinja2.ChainableUndefined

    def test_cached(self):
        assert make_value_env() is make_value_env()

    def test_has_filters(self):
        env = make_value_env()
        assert "to_json" in env.filters


class TestRenderTemplate:
    def test_renders_named_template(self, tmp_path):
        (tmp_path / "test.j2").write_text("hello {{ name }}")
        env = make_env(str(tmp_path))
        assert render_template(env, "test.j2", name="world") == "hello world"

    def test_renders_with_filters(self, tmp_path):
        (tmp_path / "test.j2").write_text("{{ data | to_json }}")
        env = make_env(str(tmp_path))
        assert render_template(env, "test.j2", data={"a": 1}) == '{"a": 1}'


class TestRenderValue:
    def test_renders_string_with_expressions(self):
        assert render_value("hello {{ name }}", {"name": "world"}) == "hello world"

    def test_passes_through_non_string(self):
        assert render_value(42, {}) == 42

    def test_passes_through_string_without_expressions(self):
        assert render_value("plain text", {}) == "plain text"

    def test_passes_through_none(self):
        assert render_value(None, {}) is None


class TestRenderManifestValues:
    def test_renders_dict_values(self):
        result = render_manifest_values({"key": "{{ value }}"}, {"value": "rendered"})
        assert result == {"key": "rendered"}

    def test_renders_list_values(self):
        result = render_manifest_values(["{{ a }}", "{{ b }}"], {"a": "1", "b": "2"})
        assert result == ["1", "2"]

    def test_renders_nested(self):
        result = render_manifest_values({"outer": {"inner": "{{ x }}"}}, {"x": "yes"})
        assert result == {"outer": {"inner": "yes"}}

    def test_passes_through_non_string(self):
        result = render_manifest_values({"n": 42, "b": True, "l": [1, 2]}, {})
        assert result == {"n": 42, "b": True, "l": [1, 2]}

    def test_empty_dict(self):
        assert render_manifest_values({}, {}) == {}

    def test_empty_list(self):
        assert render_manifest_values([], {}) == []