"""
Tests for mempalace/tunnel_sync.py — remote wizard wing sync client.

Refs: #1078, #1075
"""

from __future__ import annotations

import json
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from mempalace.tunnel_sync import (
    SyncResult,
    _peer_url,
    _write_closet,
    get_remote_wings,
    search_remote_room,
    sync_peer,
)


# ---------------------------------------------------------------------------
# _peer_url
# ---------------------------------------------------------------------------

def test_peer_url_strips_trailing_slash():
    assert _peer_url("http://host:7771/", "/wings") == "http://host:7771/wings"


def test_peer_url_with_path():
    assert _peer_url("http://host:7771", "/search") == "http://host:7771/search"


# ---------------------------------------------------------------------------
# get_remote_wings
# ---------------------------------------------------------------------------

def test_get_remote_wings_returns_list():
    with patch("mempalace.tunnel_sync._get", return_value={"wings": ["bezalel", "timmy"]}):
        wings = get_remote_wings("http://peer:7771")
    assert wings == ["bezalel", "timmy"]


def test_get_remote_wings_empty():
    with patch("mempalace.tunnel_sync._get", return_value={"wings": []}):
        wings = get_remote_wings("http://peer:7771")
    assert wings == []


# ---------------------------------------------------------------------------
# search_remote_room
# ---------------------------------------------------------------------------

def _make_entry(text: str, room: str = "forge", wing: str = "bezalel", score: float = 0.9) -> dict:
    return {"text": text, "room": room, "wing": wing, "score": score}


def test_search_remote_room_deduplicates():
    entry = _make_entry("CI passed")
    # Same entry returned from multiple queries — should only appear once
    with patch("mempalace.tunnel_sync._get", return_value={"results": [entry]}):
        results = search_remote_room("http://peer:7771", "forge", n=50)
    assert len(results) == 1
    assert results[0]["text"] == "CI passed"


def test_search_remote_room_respects_n_limit():
    entries = [_make_entry(f"item {i}") for i in range(100)]
    with patch("mempalace.tunnel_sync._get", return_value={"results": entries}):
        results = search_remote_room("http://peer:7771", "forge", n=5)
    assert len(results) <= 5


def test_search_remote_room_handles_request_error():
    import urllib.error
    with patch("mempalace.tunnel_sync._get", side_effect=urllib.error.URLError("refused")):
        results = search_remote_room("http://peer:7771", "forge")
    assert results == []


# ---------------------------------------------------------------------------
# _write_closet
# ---------------------------------------------------------------------------

def test_write_closet_creates_file(tmp_path):
    entries = [_make_entry("a memory")]
    ok = _write_closet(tmp_path, "bezalel", "forge", entries, dry_run=False)
    assert ok is True
    closet = tmp_path / "bezalel" / "forge.closet.json"
    assert closet.exists()
    data = json.loads(closet.read_text())
    assert data["wing"] == "bezalel"
    assert data["room"] == "forge"
    assert len(data["drawers"]) == 1
    assert data["drawers"][0]["closet"] is True
    assert data["drawers"][0]["text"] == "a memory"


def test_write_closet_dry_run_does_not_create(tmp_path):
    entries = [_make_entry("a memory")]
    ok = _write_closet(tmp_path, "bezalel", "forge", entries, dry_run=True)
    assert ok is True
    closet = tmp_path / "bezalel" / "forge.closet.json"
    assert not closet.exists()


def test_write_closet_creates_wing_subdirectory(tmp_path):
    entries = [_make_entry("memory")]
    _write_closet(tmp_path, "timmy", "hermes", entries, dry_run=False)
    assert (tmp_path / "timmy").is_dir()


def test_write_closet_source_file_is_tunnel_tagged(tmp_path):
    entries = [_make_entry("memory")]
    _write_closet(tmp_path, "bezalel", "hermes", entries, dry_run=False)
    closet = tmp_path / "bezalel" / "hermes.closet.json"
    data = json.loads(closet.read_text())
    assert data["drawers"][0]["source_file"].startswith("tunnel:")


# ---------------------------------------------------------------------------
# sync_peer
# ---------------------------------------------------------------------------

def _mock_get_responses(peer_url: str) -> dict:
    """Minimal mock _get returning health, wings, and search results."""
    def _get(url: str) -> dict:
        if url.endswith("/health"):
            return {"status": "ok", "palace": "/var/lib/mempalace/fleet"}
        if url.endswith("/wings"):
            return {"wings": ["bezalel"]}
        if "/search" in url:
            return {"results": [_make_entry("test memory")]}
        return {}
    return _get


def test_sync_peer_writes_closets(tmp_path):
    (tmp_path / ".gitkeep").touch()  # ensure palace dir exists

    with patch("mempalace.tunnel_sync._get", side_effect=_mock_get_responses("http://peer:7771")):
        result = sync_peer("http://peer:7771", tmp_path, n_results=10)

    assert result.ok
    assert "bezalel" in result.wings_found
    assert result.closets_written > 0


def test_sync_peer_dry_run_no_files(tmp_path):
    (tmp_path / ".gitkeep").touch()

    with patch("mempalace.tunnel_sync._get", side_effect=_mock_get_responses("http://peer:7771")):
        result = sync_peer("http://peer:7771", tmp_path, n_results=10, dry_run=True)

    assert result.ok
    # No closet files should be written
    closets = list(tmp_path.rglob("*.closet.json"))
    assert closets == []


def test_sync_peer_unreachable_returns_error(tmp_path):
    import urllib.error
    with patch("mempalace.tunnel_sync._get", side_effect=urllib.error.URLError("refused")):
        result = sync_peer("http://unreachable:7771", tmp_path)

    assert not result.ok
    assert any("unreachable" in e or "refused" in e for e in result.errors)


def test_sync_peer_unhealthy_returns_error(tmp_path):
    with patch("mempalace.tunnel_sync._get", return_value={"status": "degraded"}):
        result = sync_peer("http://peer:7771", tmp_path)

    assert not result.ok
    assert any("unhealthy" in e for e in result.errors)


def test_sync_peer_no_wings_is_ok(tmp_path):
    def _get(url: str) -> dict:
        if "/health" in url:
            return {"status": "ok"}
        return {"wings": []}

    with patch("mempalace.tunnel_sync._get", side_effect=_get):
        result = sync_peer("http://peer:7771", tmp_path)

    assert result.ok
    assert result.closets_written == 0


# ---------------------------------------------------------------------------
# SyncResult.ok
# ---------------------------------------------------------------------------

def test_sync_result_ok_no_errors():
    r = SyncResult(wings_found=["bezalel"], rooms_pulled=5, closets_written=5)
    assert r.ok is True


def test_sync_result_not_ok_with_errors():
    r = SyncResult(errors=["connection refused"])
    assert r.ok is False