"""Proactive alerts (services/insights_service.py): only the idle-cash
signal is covered here — the other three (negative cash flow, net worth
decline, over-budget) predate this test file and aren't touched by this
change.
"""
from datetime import date, timedelta

from httpx import AsyncClient

from tests.helpers import txn_payload as _txn

STALE_DATE = (date.today() - timedelta(days=400)).isoformat()
RECENT_DATE = date.today().isoformat()


async def _alert_keys(client: AsyncClient) -> set[str]:
    resp = await client.get("/insights/alerts")
    return {alert["key"] for alert in resp.json()["alerts"]}


async def test_idle_cash_flags_a_stale_large_balance(client: AsyncClient, account_id, categories):
    await client.post(
        "/transactions",
        json=_txn(account_id, type="income", amount="5000.00", category_id=categories["Salary"]["id"], date=STALE_DATE),
    )

    assert "idle_cash" in await _alert_keys(client)


async def test_idle_cash_ignores_a_recently_touched_account(client: AsyncClient, account_id, categories):
    await client.post(
        "/transactions",
        json=_txn(account_id, type="income", amount="5000.00", category_id=categories["Salary"]["id"], date=STALE_DATE),
    )
    await client.post(
        "/transactions",
        json=_txn(account_id, type="expense", amount="1.00", category_id=categories["Groceries"]["id"], date=RECENT_DATE),
    )

    assert "idle_cash" not in await _alert_keys(client)


async def test_idle_cash_ignores_investment_accounts(client: AsyncClient, categories):
    investment = await client.post("/accounts", json={"name": "Brokerage", "type": "investment", "currency": "USD"})
    investment_id = investment.json()["id"]
    await client.post(
        "/transactions",
        json=_txn(investment_id, type="income", amount="5000.00", category_id=categories["Salary"]["id"], date=STALE_DATE),
    )

    assert "idle_cash" not in await _alert_keys(client)


async def test_idle_cash_includes_debit_cards(client: AsyncClient, categories):
    debit_card = await client.post(
        "/accounts", json={"name": "Debit card", "type": "debit_card", "currency": "USD"}
    )
    debit_card_id = debit_card.json()["id"]
    await client.post(
        "/transactions",
        json=_txn(
            debit_card_id,
            type="income",
            amount="5000.00",
            category_id=categories["Salary"]["id"],
            date=STALE_DATE,
        ),
    )

    assert "idle_cash" in await _alert_keys(client)


async def test_idle_cash_respects_custom_threshold(client: AsyncClient, account_id, categories):
    await client.post(
        "/transactions",
        json=_txn(account_id, type="income", amount="5000.00", category_id=categories["Salary"]["id"], date=STALE_DATE),
    )
    assert "idle_cash" in await _alert_keys(client)

    resp = await client.patch("/settings", json={"idle_cash_threshold_amount": "10000.00"})
    assert resp.status_code == 200

    assert "idle_cash" not in await _alert_keys(client)