from pathlib import Path
import asyncio
import pytest
from app.core.config import settings

from app.economy.backend.router import (
    SettlementRequest,
    _build_settlement_preview,
    _normalise_billing_method,
    _settlement_label,
)


ROOT = Path(__file__).resolve().parents[1]


@pytest.fixture(autouse=True)
def legacy_queue_mode(monkeypatch):
    monkeypatch.setattr(settings, "WORKFLOWS_ENABLED", False)


def test_time_queue_normalises_legacy_settlement_names():
    assert _normalise_billing_method("prepaid_card") == "prepaid"
    assert _normalise_billing_method("fixed_price") == "subscription"
    assert _normalise_billing_method(None) == "invoice"
    assert _settlement_label("subscription") == "Abonnement / fast pris"


def test_time_queue_has_preview_and_safe_draft_tracking():
    router_source = (ROOT / "app/economy/backend/router.py").read_text()
    template_source = (ROOT / "app/economy/frontend/time_queue.html").read_text()
    migration_source = (ROOT / "migrations/1018_economy_time_queue_settlement.sql").read_text()

    assert '"/time-queue/preview-settlement"' in router_source
    assert '"/time-queue/settle"' in router_source
    assert "economy_order_draft_id" in router_source
    assert "preview-settlement" in template_source
    assert "Forhåndsvisning af afregning" in template_source
    assert "economy_order_draft_id" in migration_source


def test_case_customer_is_authoritative_for_queue_and_settlement():
    router_source = (ROOT / "app/economy/backend/router.py").read_text()

    # A moved/corrected case must not be invoiced to the historic customer
    # stored on a time entry.
    assert "COALESCE(s.customer_id, effective_customer.hub_customer_id) AS customer_id" in router_source
    assert "The case company is authoritative" in router_source


def test_time_queue_includes_solved_and_closed_cases_by_default(monkeypatch):
    from app.economy.backend import router as economy_router

    captured = {}

    def fake_query(query, params):
        captured["query"] = query
        captured["params"] = params
        return [{"id": 8, "case_status": "Løst"}]

    monkeypatch.setattr(economy_router, "execute_query", fake_query)
    result = asyncio.run(economy_router.list_hub_time_queue(
        customer_id=None, status=None, case_state=None, billable=None, q=None, limit=500
    ))

    assert result["items"][0]["case_status"] == "Løst"
    assert "s.status" not in captured["query"].split("WHERE", 1)[1].split("ORDER BY", 1)[0]


def test_time_queue_has_explicit_closed_case_filter(monkeypatch):
    from app.economy.backend import router as economy_router

    captured = {}
    monkeypatch.setattr(economy_router, "execute_query", lambda query, params: captured.update(query=query, params=params) or [])
    asyncio.run(economy_router.list_hub_time_queue(
        customer_id=None, status=None, case_state="closed", billable=None, q=None, limit=500
    ))

    assert "'lukket', 'løst', 'closed', 'resolved', 'afsluttet', 'done'" in captured["query"]
    assert "s.status" not in captured["params"]


def test_invoice_preview_uses_unrounded_draft_hours(monkeypatch):
    from app.economy.backend import router as economy_router

    monkeypatch.setattr(economy_router, "_selected_time_entries", lambda ids: [{
        "id": 12,
        "customer_id": 44,
        "sag_id": 7,
        "billing_method": "invoice",
        "billable": True,
        "approved_hours": 0.5,
        "original_hours": 0.5,
        "faktisk_tid_min": 18,
        "case_title": "Support",
        "customer_name": "Eksempel ApS",
    }])
    monkeypatch.setattr(
        economy_router,
        "_resolve_tmodule_customer_id",
        lambda customer_id, sag_id: 44,
    )
    monkeypatch.setattr(
        economy_router,
        "execute_query_single",
        lambda query, params: {"name": "Eksempel ApS", "hourly_rate": 1000},
    )

    preview = _build_settlement_preview(SettlementRequest(ids=[12], billing_method="invoice"))

    assert preview["valid"] is True
    assert preview["invoice_groups"] == [{
        "customer_id": 44,
        "customer_name": "Eksempel ApS",
        "entries": [12],
        "hours": 0.5,
        "hourly_rate": 1000.0,
        "amount_ex_vat": 500.0,
    }]