from __future__ import annotations

from pathlib import Path
import sys

from streamlit.testing.v1 import AppTest

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

from dashboard import authentication


ADMIN_ID = "test-admin"
ADMIN_PASSWORD = "test-password"
SIGNING_SECRET = "s" * 64
APP_PATH = Path(__file__).resolve().parents[1] / "dashboard" / "app.py"


def _body_text(at: AppTest) -> str:
    elements = (
        list(at.title)
        + list(at.header)
        + list(at.subheader)
        + list(at.text)
        + list(at.markdown)
        + list(at.caption)
        + list(at.error)
    )
    return "\n".join(str(item.value) for item in elements)


def _configure(monkeypatch) -> authentication.AuthSettings:
    monkeypatch.setenv(authentication.ADMIN_ID_ENV, ADMIN_ID)
    monkeypatch.setenv(authentication.ADMIN_PASSWORD_ENV, ADMIN_PASSWORD)
    monkeypatch.setenv(authentication.SIGNING_SECRET_ENV, SIGNING_SECRET)
    settings = authentication.load_auth_settings()
    assert settings is not None
    return settings


def _app_with_cookie(monkeypatch, token: str | None, *, page: str = "요약") -> AppTest:
    _configure(monkeypatch)
    monkeypatch.setattr(authentication, "_request_cookie", lambda: token)
    at = AppTest.from_file(str(APP_PATH), default_timeout=30)
    at.query_params["page"] = page
    return at.run()


def test_missing_authentication_configuration_fails_closed(monkeypatch, tmp_path):
    from scripts.ci_fixture_db import create_ci_fixture_db

    fixture = tmp_path / "fixture.sqlite3"
    create_ci_fixture_db(fixture)
    monkeypatch.delenv(authentication.ADMIN_ID_ENV, raising=False)
    monkeypatch.delenv(authentication.ADMIN_PASSWORD_ENV, raising=False)
    monkeypatch.delenv(authentication.SIGNING_SECRET_ENV, raising=False)
    monkeypatch.setenv("JARCA_LEDGER_DB_PATH", str(fixture))

    at = AppTest.from_file(str(APP_PATH), default_timeout=30).run()

    assert not at.exception
    assert "관리자 로그인" in _body_text(at)
    assert authentication.CONFIGURATION_ERROR_MESSAGE in _body_text(at)
    assert "이번 달 수입/지출 현황" not in _body_text(at)


def test_main_does_not_resolve_database_or_dispatch_when_authentication_rejects(
    monkeypatch,
):
    from dashboard import app

    monkeypatch.setattr(app, "require_dashboard_authentication", lambda: False)

    def forbidden_database_access():
        raise AssertionError("get_db_path must not run before authentication")

    monkeypatch.setattr(app, "get_db_path", forbidden_database_access)

    app.main()


def test_query_parameter_cannot_bypass_login_or_reach_import_page(monkeypatch):
    at = _app_with_cookie(monkeypatch, None, page="Import")

    assert not at.exception
    assert "관리자 로그인" in _body_text(at)
    assert "PDF Import" not in _body_text(at)
    assert "Import 이력" not in _body_text(at)


def test_login_form_posts_credentials_to_server_side_adapter(monkeypatch):
    at = _app_with_cookie(monkeypatch, None)
    body = _body_text(at)

    assert 'action="/api/auth/login"' in body
    assert 'method="post"' in body
    assert 'name="admin_id"' in body
    assert 'name="admin_password"' in body
    assert 'name="remember_me"' in body
    assert ADMIN_ID not in repr(at.session_state)
    assert ADMIN_PASSWORD not in repr(at.session_state)
    assert SIGNING_SECRET not in repr(at.session_state)


def test_invalid_cookie_blocks_database_and_page_dispatch(monkeypatch):
    at = _app_with_cookie(monkeypatch, "malformed-token")

    assert not at.exception
    assert "관리자 로그인" in _body_text(at)
    assert "이번 달 수입/지출 현황" not in _body_text(at)
    assert "/api/auth/cleanup" in _body_text(at)


def test_no_cookie_does_not_render_cookie_cleanup_navigation(monkeypatch):
    at = _app_with_cookie(monkeypatch, None)

    assert "/api/auth/cleanup" not in _body_text(at)


def test_valid_cookie_allows_dashboard_and_is_not_stored_in_session_state(
    monkeypatch, tmp_path
):
    from scripts.ci_fixture_db import create_ci_fixture_db

    fixture = tmp_path / "fixture.sqlite3"
    create_ci_fixture_db(fixture)
    monkeypatch.setenv("JARCA_LEDGER_DB_PATH", str(fixture))
    settings = _configure(monkeypatch)
    token = authentication.issue_persistent_token(
        settings, remember_me=False, now=1_700_000_000
    ).value
    monkeypatch.setattr(authentication.time, "time", lambda: 1_700_000_001)
    monkeypatch.setattr(authentication, "_request_cookie", lambda: token)

    at = AppTest.from_file(str(APP_PATH), default_timeout=30).run()

    assert not at.exception
    assert "이번 달 수입/지출 현황" in _body_text(at)
    assert 'action="/api/auth/logout"' in _body_text(at)
    assert token not in repr(at.session_state)
    assert ADMIN_PASSWORD not in repr(at.session_state)
    assert SIGNING_SECRET not in repr(at.session_state)


def test_password_rotation_invalidates_existing_cookie(monkeypatch, tmp_path):
    from scripts.ci_fixture_db import create_ci_fixture_db

    fixture = tmp_path / "fixture.sqlite3"
    create_ci_fixture_db(fixture)
    monkeypatch.setenv("JARCA_LEDGER_DB_PATH", str(fixture))
    settings = _configure(monkeypatch)
    token = authentication.issue_persistent_token(settings, remember_me=True).value
    monkeypatch.setattr(authentication, "_request_cookie", lambda: token)

    at = AppTest.from_file(str(APP_PATH), default_timeout=30).run()
    assert "이번 달 수입/지출 현황" in _body_text(at)

    monkeypatch.setenv(authentication.ADMIN_PASSWORD_ENV, "rotated-password")
    at = at.run()

    assert "관리자 로그인" in _body_text(at)
    assert "이번 달 수입/지출 현황" not in _body_text(at)


def test_signing_secret_rotation_invalidates_existing_cookie(monkeypatch, tmp_path):
    from scripts.ci_fixture_db import create_ci_fixture_db

    fixture = tmp_path / "fixture.sqlite3"
    create_ci_fixture_db(fixture)
    monkeypatch.setenv("JARCA_LEDGER_DB_PATH", str(fixture))
    settings = _configure(monkeypatch)
    token = authentication.issue_persistent_token(settings, remember_me=True).value
    monkeypatch.setattr(authentication, "_request_cookie", lambda: token)

    at = AppTest.from_file(str(APP_PATH), default_timeout=30).run()
    assert "이번 달 수입/지출 현황" in _body_text(at)

    monkeypatch.setenv(authentication.SIGNING_SECRET_ENV, "r" * 64)
    at = at.run()

    assert "관리자 로그인" in _body_text(at)
    assert "/api/auth/cleanup" in _body_text(at)
    assert "이번 달 수입/지출 현황" not in _body_text(at)