"""The node's life on a Windows desktop: set up at sign-in, stopped for real.

Two defects from the first Windows beta tester, each found again live on a
clean install (2026-10-07):

- After a service-mode install the node was never set up for the account that
  signed in, the Node section stayed out of the sidebar, and the way out was
  `meshbay-node init` in a terminal plus the key pasted on the profile page.
- A Stop left meshbay-node.exe running while the Node page said "Stopped": the
  control API closes before the process exits, and the page asked nothing else.

What can run for real here does (processes, the CLI's stop, the exit timer);
the desktop application's side is pinned by reading main.js and app.js, the only
evidence available without launching it -- tests/e2e_windows_app.py launches it.
"""

import inspect
import os
import subprocess
import sys
import textwrap
import time
from pathlib import Path

import pytest
from meshbay_node import platform as plat
from meshbay_node.cli import lifecycle

ROOT = Path(__file__).resolve().parents[3]
MAIN_JS = ROOT / "packages" / "meshbay-client" / "src" / "main.js"
STATIC = ROOT / "packages" / "meshbay-hub" / "src" / "meshbay_hub" / "static"


def _js(path: Path) -> str:
    return path.read_text(encoding="utf-8")


def _block(src: str, start: str, end: str = "\n  });\n") -> str:
    return src.split(start, 1)[1].split(end, 1)[0]


# ── node.toml ────────────────────────────────────────────────────────────────

def test_a_byte_order_mark_in_node_toml_is_read(tmp_path):
    from meshbay_node.config import load_config
    cfg_file = tmp_path / "node.toml"
    cfg_file.write_bytes(b"\xef\xbb\xbf"
                         + b'[hub]\nurl = "http://127.0.0.1:1"\nusername = "someone"\n')
    assert load_config(cfg_file).hub.username == "someone"


def test_a_node_toml_it_cannot_read_is_said_not_swallowed(tmp_path):
    """A service node has no console: the reason it will not start goes to
    the log, where it used to die after "Logging to ..." in silence."""
    cfg_file = tmp_path / "node.toml"
    cfg_file.write_text("[hub\nusername = ", encoding="utf-8")
    env = {**os.environ, "LOCALAPPDATA": str(tmp_path), "APPDATA": str(tmp_path),
           "HOME": str(tmp_path), "USERPROFILE": str(tmp_path)}
    r = subprocess.run([sys.executable, "-c", "from meshbay_node.daemon import main; main()",
                        "--config", str(cfg_file)],
                       capture_output=True, text=True, timeout=60, env=env)
    assert r.returncode == 1, r.stdout + r.stderr
    assert "cannot read" in r.stdout
    if sys.platform == "win32":
        log = tmp_path / "meshbay" / "state" / "node.log"
        assert "cannot read" in log.read_text(encoding="utf-8")


# ── the daemon leaves when it has stopped ────────────────────────────────────

def test_a_stopped_node_does_not_wait_for_a_busy_thread():
    """A worker still walking a large tree kept the process alive after
    _shutdown(), with its control API already closed."""
    script = textwrap.dedent("""
        import threading, time
        from meshbay_node.daemon import exit_after
        threading.Thread(target=time.sleep, args=(120,), name="walker").start()
        exit_after(0.5, "the node has stopped")
    """)
    t0 = time.monotonic()
    r = subprocess.run([sys.executable, "-c", script], capture_output=True, text=True,
                       timeout=60)
    assert r.returncode == 0, r.stderr
    assert time.monotonic() - t0 < 30
    assert "walker" in r.stderr, "it names what it did not wait for"


def test_only_the_real_daemon_ends_its_own_process():
    """Tests run daemons inside pytest: the timer must be armed by main()
    alone, both before _shutdown() (a hung shutdown) and after it."""
    from meshbay_node import daemon
    assert daemon.NodeDaemon.exit_process_when_stopped is False
    assert "daemon.exit_process_when_stopped = True" in inspect.getsource(daemon.main)
    shutdown = inspect.getsource(daemon.NodeDaemon._shutdown)
    assert shutdown.count("if self.exit_process_when_stopped:") == 2
    assert shutdown.index("SHUTDOWN_DEADLINE_SECS") < shutdown.index('log.info("Node stopped")') \
        < shutdown.index("EXIT_GRACE_SECS")


# ── the CLI's stop: by pid, then checked ─────────────────────────────────────

class _Stub:
    def __init__(self, monkeypatch, *, answering=None, graceful=False, pids=(),
                 kill_works=True):
        self.killed: list[int] = []
        self.pids = list(pids)
        monkeypatch.setattr(lifecycle, "_running_status", lambda cfg: answering)
        monkeypatch.setattr(plat, "request_graceful_stop", lambda *a, **k: graceful)
        monkeypatch.setattr(plat, "service_status", lambda: {"installed": False, "state": ""})
        monkeypatch.setattr(plat, "_pid_alive", lambda pid: pid in self.pids)
        monkeypatch.setattr(plat, "autostart_end", lambda: None)
        monkeypatch.setattr(plat, "node_pids", lambda: list(self.pids))

        def kill(pid):
            self.killed.append(pid)
            if kill_works:
                self.pids.remove(pid)
        monkeypatch.setattr(plat, "kill_pid", kill)
        clock = iter(range(0, 10_000))
        monkeypatch.setattr(time, "monotonic", lambda: next(clock))
        monkeypatch.setattr(time, "sleep", lambda s: None)


class _Cfg:
    data_dir = Path(".")

    class node:
        ui_port = 1


def test_a_stop_the_node_did_not_finish_kills_it_by_pid(monkeypatch):
    stub = _Stub(monkeypatch, answering={"pid": 4242}, graceful=False, pids=[4242])
    assert lifecycle._stop_node(_Cfg) == "stopped (forced)"
    assert stub.killed == [4242]


def test_a_node_process_left_behind_is_never_called_stopped(monkeypatch):
    _Stub(monkeypatch, answering=None, graceful=False, pids=[5151], kill_works=False)
    with pytest.raises(lifecycle.NodeStillRunning, match="5151"):
        lifecycle._stop_node(_Cfg)


def test_a_node_answering_nothing_is_still_a_node(monkeypatch):
    """Its API closed, its process there: not "not running"."""
    stub = _Stub(monkeypatch, answering=None, graceful=False, pids=[6161])
    monkeypatch.setattr(plat, "autostart_end", lambda: stub.pids.clear())
    assert lifecycle._stop_node(_Cfg) == "stopped (forced)"


def test_a_stop_that_fails_exits_non_zero_with_the_reason(monkeypatch, capsys):
    def refuse(cfg):
        raise lifecycle.NodeStillRunning("meshbay-node is still running (pid 7)")
    monkeypatch.setattr(lifecycle, "_stop_node", refuse)
    monkeypatch.setattr(lifecycle, "load_config", lambda p: _Cfg)

    class Args:
        config = None
        subcommand = "stop"
    monkeypatch.setattr(plat, "service_status", lambda: {"installed": False, "state": ""})
    monkeypatch.setattr(sys, "platform", "win32")
    with pytest.raises(SystemExit) as e:
        lifecycle.autostart(Args)
    assert e.value.code == 1
    assert "pid 7" in capsys.readouterr().out


@pytest.mark.skipif(sys.platform != "win32", reason="lists and kills real processes")
def test_node_pids_finds_every_copy_but_its_caller(tmp_path, monkeypatch):
    """Under an image name of this test's own: the real one would find, and
    kill, the developer's node."""
    import shutil
    exe = tmp_path / "mbpidtest.exe"
    shutil.copy(r"C:\Windows\System32\PING.EXE", exe)
    proc = subprocess.Popen([str(exe), "-n", "300", "127.0.0.1"],
                            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
    monkeypatch.setattr(plat, "NODE_IMAGE", "mbpidtest.exe")
    try:
        assert plat.node_pids() == [proc.pid]
        plat.kill_pid(proc.pid)
        assert proc.wait(timeout=10) is not None
        assert plat.node_pids() == []
    finally:
        if proc.poll() is None:
            proc.kill()


# ── the desktop application: what it says, and when it sets the node up ──────

def test_the_node_page_asks_the_node_not_only_the_task():
    """A node started from a terminal runs while the service task reads
    "Ready"; one on its way out answers nothing for a while. The page said
    "Stopped" about both."""
    main_js = _js(MAIN_JS)
    status = main_js.split("async function nodeServiceStatus()", 1)[1].split("\n  }\n", 1)[0]
    assert "/running/i.test(svc.state)" not in status
    assert status.count("winNodeActivity()") == 2
    activity = main_js.split("async function winNodeActivity()", 1)[1].split("\n  }\n", 1)[0]
    assert "probeNode()" in activity and "winNodePids()" in activity
    assert "'unknown'" in activity and "'inactive'" in activity
    page = _js(STATIC / "node-page.js")
    assert "const stoppable = info.activeState !== 'inactive';" in page
    assert "disabled=${!!busy || !stoppable}" in page


def test_signing_in_sets_up_this_machines_node():
    main_js = _js(MAIN_JS)
    assert "handle('node:ensure'" in main_js
    ensure = main_js.split("async function ensureNode(opts)", 1)[1].split("\n  }\n", 1)[0]
    # Only the node this build ships, on Windows: Linux is unchanged.
    assert "process.platform !== 'win32' || !hasBundledNode()" in ensure
    # A node set up for someone else is left as it is...
    assert ensure.index("return { state: 'other_account' }") < ensure.index("provisionNode(")
    # ...and so is an account already linked to another node.
    assert "if (linked && linked !== p.pk_node_ed25519) return { state: 'other_node' };" in ensure
    assert ensure.index("state: 'other_node'") < ensure.index("linkNodeKeyAndAwaitRunning(")
    # Started however this machine is set up, through the CLI like every start.
    assert "winNodeStartVia(['autostart', 'start'])" in ensure
    # One start at a time.
    start = main_js.split("handle('node:start'", 1)[1][:400]
    assert "if (nodeEnsuring) await nodeEnsuring" in start
    preload = _js(ROOT / "packages" / "meshbay-client" / "src" / "preload.js")
    assert "ensure: (opts) => ipcRenderer.invoke('node:ensure', opts)" in preload
    assert "bridge.node.ensure(opts)" in _js(STATIC / "platform.js")


def test_the_node_section_shows_for_a_node_not_yet_linked():
    """It waited for the hub to hold a node key, which nothing gave it."""
    app = _js(STATIC / "app.js")
    assert "showNode=${hasNodeKey || localNode}" in app
    assert "platform.capabilities.nodeAdmin && (hasNodeKey || localNode)" in app
    effect = app.split("const signedInAs = user ? user.username : null;", 1)[1]
    effect = effect.split("}, [signedInAs]);", 1)[0]
    assert "platform.node.ensure(" in effect and "platform.node.installed()" in effect
    # The token rotates; a renewal is not a sign-in.
    assert "}, [signedInAs]);" in app