from __future__ import annotations

from decimal import Decimal
from pathlib import Path

from observatory.economics import active_members, build_snapshot, monthly_cost_total
from observatory.load import (
    load_costs,
    load_membership,
    load_pricing_models,
    load_product,
    load_revenue,
)

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) == 3


def test_build_snapshot_uses_seed_revenue_for_period() -> None:
    product = load_product(DATA_DIR)
    models = load_pricing_models(DATA_DIR)
    members = load_membership(DATA_DIR)
    revenue = load_revenue(DATA_DIR)
    _, costs, fx_rates = load_costs(DATA_DIR)

    snapshot = build_snapshot("2026-06", product, models, members, revenue, costs, fx_rates)

    assert snapshot.active_members == 3
    assert snapshot.monthly_revenue == Decimal("80.91")
    assert snapshot.revenue_source == "manual_estimate"
    assert snapshot.pricing_model_count == 3
    assert snapshot.monthly_cost > Decimal("0")
    assert snapshot.cost_per_member == (snapshot.monthly_cost / 3).quantize(Decimal("0.01"))
    assert snapshot.gross_margin == (snapshot.monthly_revenue - snapshot.monthly_cost).quantize(
        Decimal("0.01")
    )


def test_monthly_cost_includes_fixed_and_variable_components() -> None:
    _, costs, fx_rates = load_costs(DATA_DIR)
    total = monthly_cost_total(costs, fx_rates, Decimal("80.91"), 3)
    # fixed: 35 USD -> 32.20 EUR + 15 EUR + 25 EUR = 72.20
    # variable: 1.5% of 80.91 + 0.25 * 3 = 1.21 + 0.75 = 1.96
    assert total == Decimal("74.16")


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

    report = generate_dashboard(DATA_DIR, "2026-06")
    assert "# Economics Dashboard v1" in report
    assert "Pricing Model Registry" in report
    assert "flat-899-eur-monthly" in report