from __future__ import annotations

from decimal import Decimal
from pathlib import Path

from observatory.economics import active_members, build_liquidity_summary, build_snapshot
from observatory.ledger import aggregate_infrastructure_by_period, build_monthly_ledger
from observatory.load import (
    load_budget,
    load_expense_records,
    load_fx_rates,
    load_membership,
    load_monthly_ledger,
    load_payment_records,
    load_pricing_models,
    load_product,
)

DATA_DIR = Path(__file__).resolve().parent.parent / "data"


def test_active_members_counts_only_active_status() -> None:
    members = load_membership(DATA_DIR)
    assert active_members(members) == 1


def test_infrastructure_aggregated_from_expense_records() -> None:
    expenses = load_expense_records(DATA_DIR)
    fx = load_fx_rates(DATA_DIR)
    totals = aggregate_infrastructure_by_period(expenses, fx)

    assert totals["2025-03"] == Decimal("69.44")
    assert totals["2026-06"] == Decimal("69.44")
    # Bubble $32 @ 0.92 = 29.44 + 15 domains + 25 overhead
    bubble_eur = Decimal("32.00") * Decimal("0.92")
    assert bubble_eur == Decimal("29.44")


def test_monthly_ledger_computes_processing_from_payment_records() -> None:
    ledger = load_monthly_ledger(DATA_DIR)
    june = next(row for row in ledger if row.period == "2026-06")
    march = next(row for row in ledger if row.period == "2025-03")

    assert march.infrastructure_cost == Decimal("69.44")
    assert march.payment_processing_cost == Decimal("0.00")
    assert march.gross_revenue == Decimal("0.00")
    assert june.infrastructure_cost == Decimal("69.44")
    assert june.payment_processing_cost == Decimal("0.38")
    assert june.gross_revenue == Decimal("8.99")


def test_build_snapshot_june_2026_uses_ledger_not_hand_totals() -> None:
    product = load_product(DATA_DIR)
    models = load_pricing_models(DATA_DIR)
    members = load_membership(DATA_DIR)
    payments = load_payment_records(DATA_DIR)
    ledger = load_monthly_ledger(DATA_DIR)

    snapshot = build_snapshot("2026-06", product, models, members, payments, ledger)

    assert snapshot.monthly_infrastructure_cost == Decimal("69.44")
    assert snapshot.monthly_payment_processing_cost == Decimal("0.38")
    assert snapshot.monthly_total_platform_cost == Decimal("69.82")
    assert snapshot.period_net_liquidity == Decimal("-60.83")
    assert snapshot.gross_margin == Decimal("-60.83")


def test_liquidity_summary_aggregates_ledgers_deterministically() -> None:
    budget = load_budget(DATA_DIR)
    payments = load_payment_records(DATA_DIR)
    ledger = load_monthly_ledger(DATA_DIR)

    summary = build_liquidity_summary(budget, payments, ledger, "2026-06")

    assert summary.cumulative_infrastructure_cost == Decimal("1111.04")
    assert summary.cumulative_payment_processing_cost == Decimal("3.04")
    assert summary.cumulative_total_platform_cost == Decimal("1114.08")
    assert summary.cumulative_member_payments == Decimal("68.88")
    assert summary.cumulative_net_liquidity == Decimal("-1042.16")
    assert summary.remaining_budget == Decimal("-42.16")
    assert summary.liquidity_status == "burning"
    assert summary.months_tracked == 16


def test_build_monthly_ledger_matches_loader() -> None:
    budget = load_budget(DATA_DIR)
    expenses = load_expense_records(DATA_DIR)
    payments = load_payment_records(DATA_DIR)
    members = load_membership(DATA_DIR)
    fx = load_fx_rates(DATA_DIR)

    assert build_monthly_ledger(budget, expenses, payments, members, fx) == load_monthly_ledger(
        DATA_DIR
    )


def test_dashboard_notes_expense_record_source() -> None:
    from observatory.dashboard import generate_dashboard

    report = generate_dashboard(DATA_DIR, "2026-06")
    assert "expense and payment record ledgers" in report
    assert "1111.04" in report
    assert "-42.16" in report