"""570-1 빌드판 자리 — 기본 = 개발 포트 − 1000 · --replace-dev = 개발 포트 · 빌드 실패면 안 끔."""

import importlib.util
import subprocess
from pathlib import Path

import pytest

SRC = Path(__file__).resolve().parents[2] / "tools" / "preview_up.py"


@pytest.fixture
def pu(monkeypatch, tmp_path):
    spec = importlib.util.spec_from_file_location("preview_up_570", SRC)
    mod = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(mod)
    calls: list = []
    monkeypatch.setattr(mod, "TMP", str(tmp_path))
    monkeypatch.setattr(mod, "PID_FILE", str(tmp_path / "preview.pid"))
    monkeypatch.setattr(mod, "LOG", str(tmp_path / "preview.log"))
    monkeypatch.setattr(mod, "owners_ports", lambda: (8001, 5174))
    monkeypatch.setattr(mod, "stop", lambda: calls.append("stop"))
    monkeypatch.setattr(mod, "free_port", lambda port: calls.append(("free", port)))
    monkeypatch.setattr(mod, "run", lambda cmd, env: None)
    monkeypatch.setattr(mod.time, "sleep", lambda s: None)
    monkeypatch.setattr(mod.urllib.request, "urlopen", lambda url, timeout: calls.append(url))

    class Proc:
        pid = 1

    monkeypatch.setattr(mod, "spawn", lambda cmd, env: calls.append(("spawn", cmd)) or Proc())
    monkeypatch.delenv("AISLO_VITE_PORT", raising=False)
    monkeypatch.delenv("AISLO_API_PORT", raising=False)
    mod.calls = calls
    return mod


def spawned_port(calls) -> str:
    cmd = next(c[1] for c in calls if isinstance(c, tuple) and c[0] == "spawn")
    return cmd[cmd.index("--port") + 1]


def test_default_dev_minus_1000(pu, monkeypatch):
    monkeypatch.setattr(pu.sys, "argv", ["preview_up.py"])
    assert pu.main() == 0
    assert spawned_port(pu.calls) == "4174"
    assert not any(isinstance(c, tuple) and c[0] == "free" for c in pu.calls)


def test_port_arg(pu, monkeypatch):
    monkeypatch.setattr(pu.sys, "argv", ["preview_up.py", "--port", "4999"])
    assert pu.main() == 0
    assert spawned_port(pu.calls) == "4999"


def test_replace_dev_takes_dev_port_after_build(pu, monkeypatch):
    monkeypatch.setattr(pu.sys, "argv", ["preview_up.py", "--replace-dev"])
    assert pu.main() == 0
    assert spawned_port(pu.calls) == "5174"
    assert pu.calls.index(("free", 5174)) < next(
        i for i, c in enumerate(pu.calls) if isinstance(c, tuple) and c[0] == "spawn"
    )


def test_replace_dev_build_fail_kills_nothing(pu, monkeypatch):
    def boom(cmd, env):
        raise subprocess.CalledProcessError(1, cmd)

    monkeypatch.setattr(pu, "run", boom)
    monkeypatch.setattr(pu.sys, "argv", ["preview_up.py", "--replace-dev"])
    assert pu.main() == 1
    assert pu.calls == []