"""Tests for reading open SonarQube findings."""

from __future__ import annotations

import base64

import httpx
import pytest

from ariadne.services import hermes_sonar_client as module


CFG = {
    "sonar_base_url": "http://sonarqube.quality.svc.cluster.local:9000/",
    "sonar_token": "squ_token",
    "timeout_seconds": 5,
}

ISSUE = {
    "key": "AZ-1",
    "component": "ariadne:ariadne/services/hermes_code_defects.py",
    "line": 160,
    "rule": "python:S1172",
    "severity": "MAJOR",
    "type": "CODE_SMELL",
    "effort": "5min",
    "message": 'Remove the unused function parameter "cfg".',
}


class _Response:
    def __init__(self, status_code=200, payload=None, raises=False):
        self.status_code = status_code
        self._payload = payload if payload is not None else {"issues": [ISSUE]}
        self._raises = raises

    def json(self):
        if self._raises:
            raise ValueError("not json")
        return self._payload


class _Client:
    """Stands in for httpx.Client, recording the single request made."""

    last_url = ""
    last_params: dict = {}
    last_headers: dict = {}
    response = _Response()
    error: Exception | None = None

    def __init__(self, *_args, **_kwargs):
        pass

    def __enter__(self):
        return self

    def __exit__(self, *_args):
        return False

    def get(self, url, headers=None, params=None):
        _Client.last_url = url
        _Client.last_params = params or {}
        _Client.last_headers = headers or {}
        if _Client.error is not None:
            raise _Client.error
        return _Client.response


@pytest.fixture(autouse=True)
def _stub_client(monkeypatch):
    _Client.response = _Response()
    _Client.error = None
    monkeypatch.setattr(module.httpx, "Client", _Client)
    return _Client


def test_a_project_returns_normalized_findings() -> None:
    issues, error = module.fetch_issues(CFG, "ariadne")

    assert error is None
    assert issues == [
        {
            "key": "AZ-1",
            "path": "ariadne/services/hermes_code_defects.py",
            "line": 160,
            "rule": "python:S1172",
            "severity": "MAJOR",
            "type": "CODE_SMELL",
            "effort": "5min",
            "message": 'Remove the unused function parameter "cfg".',
        }
    ]


def test_the_token_is_sent_as_basic_auth_with_an_empty_password() -> None:
    """SonarQube accepts a user token only in that shape."""

    module.fetch_issues(CFG, "ariadne")

    expected = base64.b64encode(b"squ_token:").decode("ascii")
    assert _Client.last_headers["Authorization"] == f"Basic {expected}"


def test_only_unresolved_findings_nobody_has_ruled_on_are_requested() -> None:
    """A won't-fix carries a human judgement; reopening it wastes tokens."""

    module.fetch_issues(CFG, "ariadne")

    assert _Client.last_params["resolved"] == "false"
    assert _Client.last_params["statuses"] == "OPEN,CONFIRMED,REOPENED"
    assert _Client.last_params["componentKeys"] == "ariadne"


def test_security_hotspots_are_never_requested() -> None:
    """Resolving a hotspot is a review decision, not a code change."""

    module.fetch_issues(CFG, "ariadne")

    assert "HOTSPOT" not in _Client.last_params["types"]
    assert "SECURITY_HOTSPOT" not in _Client.last_params["types"]
    assert set(_Client.last_params["types"].split(",")) == set(module.ALL_ISSUE_TYPES)


def test_the_double_slash_in_the_url_is_avoided() -> None:
    module.fetch_issues(CFG, "ariadne")

    assert _Client.last_url == (
        "http://sonarqube.quality.svc.cluster.local:9000/api/issues/search"
    )


def test_configured_types_and_severities_narrow_the_query() -> None:
    module.fetch_issues(
        {**CFG, "sonar_types": ["code_smell"], "sonar_severities": ["critical", "major"]},
        "ariadne",
    )

    assert _Client.last_params["types"] == "CODE_SMELL"
    assert _Client.last_params["severities"] == "CRITICAL,MAJOR"


def test_unrecognised_types_fall_back_to_every_type() -> None:
    module.fetch_issues({**CFG, "sonar_types": ["nonsense"]}, "ariadne")

    assert set(_Client.last_params["types"].split(",")) == set(module.ALL_ISSUE_TYPES)


@pytest.mark.parametrize(
    ("size", "expected"),
    [(None, "100"), (5, "5"), (9000, "500"), ("junk", "100")],
)
def test_the_page_size_is_clamped(size, expected) -> None:
    module.fetch_issues({**CFG, "sonar_page_size": size}, "ariadne")

    assert _Client.last_params["ps"] == expected


def test_a_finding_with_no_line_is_dropped() -> None:
    """Nothing can be anchored to a file-level finding, so it is not offered."""

    _Client.response = _Response(payload={"issues": [{**ISSUE, "line": None}]})

    issues, error = module.fetch_issues(CFG, "ariadne")

    assert error is None
    assert issues == []


@pytest.mark.parametrize(
    "issue",
    [
        {**ISSUE, "key": ""},
        {**ISSUE, "component": "ariadne"},
        {**ISSUE, "line": True},
        "not-a-dict",
    ],
)
def test_an_unusable_finding_is_dropped(issue) -> None:
    _Client.response = _Response(payload={"issues": [issue]})

    assert module.fetch_issues(CFG, "ariadne")[0] == []


def test_a_long_message_is_clipped() -> None:
    _Client.response = _Response(payload={"issues": [{**ISSUE, "message": "x " * 500}]})

    issues, _ = module.fetch_issues(CFG, "ariadne")

    assert len(issues[0]["message"]) <= 400


def test_a_missing_base_url_makes_no_request() -> None:
    issues, error = module.fetch_issues({**CFG, "sonar_base_url": ""}, "ariadne")

    assert issues == []
    assert error == "sonar base url is empty"


def test_a_missing_token_makes_no_request() -> None:
    issues, error = module.fetch_issues({**CFG, "sonar_token": ""}, "ariadne")

    assert issues == []
    assert error == "sonar token is empty"


def test_a_transport_failure_is_reported_not_raised() -> None:
    _Client.error = httpx.ConnectError("refused")

    issues, error = module.fetch_issues(CFG, "ariadne")

    assert issues == []
    assert "sonar fetch failed" in error


def test_a_non_200_is_reported() -> None:
    _Client.response = _Response(status_code=503)

    issues, error = module.fetch_issues(CFG, "ariadne")

    assert issues == []
    assert error == "sonar fetch http 503"


def test_an_unparseable_body_is_reported() -> None:
    _Client.response = _Response(raises=True)

    issues, error = module.fetch_issues(CFG, "ariadne")

    assert issues == []
    assert "sonar response not json" in error


def test_a_payload_that_is_not_a_dict_yields_nothing() -> None:
    _Client.response = _Response(payload=["nope"])

    assert module.fetch_issues(CFG, "ariadne") == ([], None)


def test_the_timeout_falls_back_when_unparseable() -> None:
    assert module._timeout({"timeout_seconds": "soon"}) == module._DEFAULT_TIMEOUT_SECONDS
    assert module._timeout({}) == module._DEFAULT_TIMEOUT_SECONDS


@pytest.mark.parametrize(
    ("component", "expected"),
    [("proj:src/a.py", "src/a.py"), ("proj", ""), (None, ""), ("proj: a.py ", "a.py")],
)
def test_the_component_key_yields_the_repository_path(component, expected) -> None:
    assert module.component_path(component) == expected