import logging

import yaml

from app.services.mitmproxy.templates import list_file_templates


def test_file_templates_use_four_space_indentation():
    for template in list_file_templates():
        for line in template.code.splitlines():
            assert "\t" not in line, f"{template.id} contains a tab: {line!r}"
            if not line.strip():
                continue
            indent = len(line) - len(line.lstrip(" "))
            assert indent % 4 == 0, (
                f"{template.id} has non-4-space indentation: {line!r}"
            )


def test_list_file_templates_loads_yaml_backed_templates():
    templates = list_file_templates()

    assert templates
    assert all(template.origin == "file" for template in templates)
    assert all(template.built_in is True for template in templates)
    assert all(template.protocol in {"http", "tcp"} for template in templates)


def test_list_file_templates_skips_invalid_files(tmp_path, caplog):
    path = tmp_path / "invalid.yaml"
    path.write_text("[]\n", encoding="utf-8")

    with caplog.at_level(logging.WARNING):
        templates = list_file_templates(tmp_path)

    assert templates == []
    assert "Skipping template file" in caplog.text


def test_list_file_templates_skips_duplicate_ids(tmp_path, caplog):
    payload = {
        "id": "duplicate",
        "name": "Duplicate",
        "protocol": "http",
        "description": "Duplicate template",
        "code": "from mitmproxy import http\n",
    }
    document = yaml.safe_dump(payload, sort_keys=False)
    (tmp_path / "one.yaml").write_text(document, encoding="utf-8")
    (tmp_path / "two.yaml").write_text(document, encoding="utf-8")

    with caplog.at_level(logging.WARNING):
        templates = list_file_templates(tmp_path)

    assert templates == []
    assert "duplicate file-backed template id" in caplog.text