from __future__ import annotations

from pathlib import Path
import sys

import pytest
from streamlit.testing.v1 import AppTest

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from dashboard import app, authentication, common
from scripts.ci_fixture_db import create_ci_fixture_db


PAGES = ["월정산", "요약", "자산/마감", "거래내역", "확인필요 큐", "미분류", "분류 규칙", "카테고리", "계좌", "Import"]


def test_dashboard_menu_labels_and_order_are_preserved(monkeypatch):
    calls = {}

    def radio(label, options, **kwargs):
        calls.update(label=label, options=list(options), kwargs=kwargs)
        return "요약"

    monkeypatch.setattr(common.st, "radio", radio)
    assert common.render_sidebar_nav(PAGES, "요약") == "요약"
    assert calls["options"] == PAGES
    assert calls["kwargs"]["key"] == "dashboard_page"
    assert calls["kwargs"]["label_visibility"] == "collapsed"


def test_sidebar_selection_updates_only_page_query_parameter(monkeypatch):
    query = {"page": "요약", "month": "2026-06", "account_id": "checking"}
    state = {"dashboard_page": "거래내역"}
    callback = {}

    monkeypatch.setattr(common.st, "query_params", query)
    monkeypatch.setattr(common.st, "session_state", state)
    monkeypatch.setattr(common.st, "radio", lambda *args, **kwargs: callback.setdefault("fn", kwargs["on_change"]) or state["dashboard_page"])
    common.render_sidebar_nav(PAGES, "요약")
    callback["fn"]()

    assert query == {"page": "거래내역", "month": "2026-06", "account_id": "checking"}


def test_sidebar_monthly_settlement_serializes_canonical_page(monkeypatch):
    query = {"page": "요약", "month": "2026-06"}
    state = {"dashboard_page": "월정산"}
    callback = {}
    monkeypatch.setattr(common.st, "query_params", query)
    monkeypatch.setattr(common.st, "session_state", state)
    monkeypatch.setattr(common.st, "radio", lambda *args, **kwargs: callback.setdefault("fn", kwargs["on_change"]) or state["dashboard_page"])
    common.render_sidebar_nav(PAGES, "월정산")
    callback["fn"]()
    assert query == {"page": "monthly_settlement", "month": "2026-06"}


def test_missing_or_unknown_page_falls_back_to_overview():
    assert common.validate_dashboard_page(None, PAGES) == "요약"
    assert common.validate_dashboard_page("not-a-page", PAGES) == "요약"
    assert common.validate_dashboard_page("거래내역", PAGES) == "거래내역"


def test_direct_page_query_access_renders_requested_page(monkeypatch):
    selected = {}
    monkeypatch.setattr(app, "require_dashboard_authentication", lambda: True)
    monkeypatch.setattr(app, "get_db_path", lambda: "fixture.sqlite3")
    monkeypatch.setattr(app.overview_gateway, "get_ledger_db_status", lambda **kwargs: {"success": True})
    monkeypatch.setattr(app, "inject_app_css", lambda: None)
    monkeypatch.setattr(app.st, "query_params", {"page": "계좌"})
    monkeypatch.setattr(app.st, "session_state", {"dashboard_page": "요약"})

    def capture_sidebar_page(pages, page):
        selected["sidebar_page"] = page
        selected["session_page"] = app.st.session_state["dashboard_page"]
        return page

    monkeypatch.setattr(app, "render_sidebar_nav", capture_sidebar_page)
    monkeypatch.setattr(app.st, "sidebar", pytest.importorskip("contextlib").nullcontext())
    monkeypatch.setattr(app.st, "button", lambda *args, **kwargs: False)
    monkeypatch.setattr(app, "page_accounts", lambda db: selected.setdefault("db", db))
    for name in PAGES:
        if name != "계좌":
            monkeypatch.setattr(app, {"월정산": "page_monthly_settlement", "요약": "page_overview", "자산/마감": "page_assets", "거래내역": "page_transactions", "확인필요 큐": "page_cross_transfer_review", "미분류": "page_uncategorized", "분류 규칙": "page_rules", "카테고리": "page_categories", "Import": "page_imports"}[name], lambda db: None)
    monkeypatch.setattr(app, "render_dashboard_body", lambda page, renderer: renderer())

    app.main()
    assert selected == {
        "sidebar_page": "계좌",
        "session_page": "계좌",
        "db": "fixture.sqlite3",
    }


def test_streamlit_menu_click_updates_body_and_preserves_page_query_siblings(tmp_path, monkeypatch):
    fixture = tmp_path / "fixture.sqlite3"
    create_ci_fixture_db(fixture)
    monkeypatch.setenv("JARCA_LEDGER_DB_PATH", str(fixture))
    monkeypatch.setenv(authentication.ADMIN_ID_ENV, "test-admin")
    monkeypatch.setenv(authentication.ADMIN_PASSWORD_ENV, "test-password")
    monkeypatch.setenv(authentication.SIGNING_SECRET_ENV, "s" * 64)
    settings = authentication.load_auth_settings()
    assert settings is not None
    token = authentication.issue_persistent_token(settings, remember_me=False).value
    monkeypatch.setattr(authentication, "_request_cookie", lambda: token)

    app_path = Path(__file__).resolve().parents[1] / "dashboard" / "app.py"
    at = AppTest.from_file(str(app_path), default_timeout=10)
    at.query_params["page"] = "요약"
    at.query_params["month"] = "2026-06"
    at.run()

    at.radio(key="dashboard_page").set_value("분류 규칙").run()

    assert not at.exception
    assert at.query_params["page"] == ["분류 규칙"]
    assert at.query_params["month"] == ["2026-06"]
    body_text = "\n".join(str(item.value) for item in list(at.text) + list(at.markdown) + list(at.caption))
    assert "현재 분류 규칙" in body_text


def test_slow_transition_clears_previous_body_and_shows_target_loading(monkeypatch):
    events = []
    monkeypatch.setattr(common.st, "empty", lambda: _FakePlaceholder(events))
    monkeypatch.setattr(common.st, "container", lambda **kwargs: _FakeKeyedContainer(events, kwargs["key"]))
    monkeypatch.setattr(common.st, "info", lambda message: events.append(("info", message)))
    common.render_dashboard_body("거래내역", lambda: events.append(("render", "거래내역")))
    assert events[0] == ("empty", "placeholder")
    assert ("open", "dashboard_body") in events
    assert ("open", "dashboard_loading") in events
    assert ("open", "dashboard_content") in events
    assert events.index(("info", "거래내역 불러오는 중…")) < events.index(("render", "거래내역"))
    assert events.index(("render", "거래내역")) < len(events) - 1
    assert events.count(("empty", "placeholder")) >= 2


def test_body_error_is_local_and_retry_rerenders_target(monkeypatch):
    events = []
    monkeypatch.setattr(common.st, "empty", lambda: _FakePlaceholder(events))
    monkeypatch.setattr(common.st, "container", lambda **kwargs: _FakeKeyedContainer(events, kwargs["key"]))
    monkeypatch.setattr(common.st, "info", lambda message: events.append(("info", message)))
    monkeypatch.setattr(common.st, "error", lambda message: events.append(("error", message)))
    monkeypatch.setattr(common.st, "button", lambda *args, **kwargs: events.append(("retry", args[0])) or True)
    monkeypatch.setattr(common.st, "rerun", lambda: events.append(("rerun", "target")))
    common.render_dashboard_body("요약", lambda: (_ for _ in ()).throw(RuntimeError("secret details")))
    assert ("error", "페이지를 불러오지 못했습니다. 다시 시도해 주세요.") in events
    assert ("rerun", "target") in events
    assert all("secret details" not in str(event) for event in events)


def test_rapid_menu_clicks_commit_latest_selection_only(monkeypatch):
    query = {"page": "요약", "filter": "pending"}
    state = {"dashboard_page": "요약"}
    callback = {}
    monkeypatch.setattr(common.st, "query_params", query)
    monkeypatch.setattr(common.st, "session_state", state)
    monkeypatch.setattr(common.st, "radio", lambda *args, **kwargs: callback.setdefault("fn", kwargs["on_change"]) or state["dashboard_page"])
    common.render_sidebar_nav(PAGES, "요약")
    for page in ("거래내역", "자산/마감", "Import"):
        state["dashboard_page"] = page
        callback["fn"]()
    assert query == {"page": "Import", "filter": "pending"}


def test_refresh_control_preserves_cache_clear_contract(monkeypatch):
    events = []

    class ExpectedRerun(BaseException):
        pass

    monkeypatch.setattr(app, "require_dashboard_authentication", lambda: True)
    monkeypatch.setattr(app, "get_db_path", lambda: "fixture.sqlite3")
    monkeypatch.setattr(app.overview_gateway, "get_ledger_db_status", lambda **kwargs: {"success": True})
    monkeypatch.setattr(app, "inject_app_css", lambda: None)
    monkeypatch.setattr(app.st, "query_params", {"page": "요약"})
    monkeypatch.setattr(app, "render_sidebar_nav", lambda pages, page: page)
    monkeypatch.setattr(app.st, "sidebar", pytest.importorskip("contextlib").nullcontext())
    monkeypatch.setattr(app.st, "button", lambda *args, **kwargs: True)
    monkeypatch.setattr(app, "clear_cache", lambda: events.append("clear_cache"))

    def rerun():
        events.append("rerun")
        raise ExpectedRerun

    monkeypatch.setattr(app.st, "rerun", rerun)

    with pytest.raises(ExpectedRerun):
        app.main()
    assert events == ["clear_cache", "rerun"]


class _FakePlaceholder:
    def __init__(self, events):
        self.events = events

    def container(self):
        return _FakeContainer(self.events)

    def info(self, message):
        self.events.append(("info", message))

    def empty(self):
        self.events.append(("empty", "placeholder"))


class _FakeContainer:
    def __init__(self, events):
        self.events = events

    def __enter__(self):
        self.events.append(("container", "open"))
        return self

    def __exit__(self, exc_type, exc, tb):
        self.events.append(("container", "close"))
        return False


class _FakeKeyedContainer:
    def __init__(self, events, key):
        self.events = events
        self.key = key

    def __enter__(self):
        self.events.append(("open", self.key))
        return self

    def __exit__(self, exc_type, exc, tb):
        self.events.append(("close", self.key))
        return False

    def empty(self):
        self.events.append(("empty", self.key))