from __future__ import annotations

from decimal import Decimal
from pathlib import Path

from observatory.economics import (
    active_members,
    build_liquidity_summary,
    build_snapshot,
    monthly_cost_from_rate_card,
)
from observatory.load import (
    load_budget,
    load_cost_rate_card,
    load_membership,
    load_monthly_platform_costs,
    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) == 1


def test_rate_card_matches_documented_platform_cost_without_revenue() -> None:
    rate_card, fx_rates = load_cost_rate_card(DATA_DIR)
    total = monthly_cost_from_rate_card(rate_card, fx_rates, Decimal("0"), 0)
    assert total == Decimal("72.20")


def test_rate_card_matches_platform_cost_with_one_member() -> None:
    rate_card, fx_rates = load_cost_rate_card(DATA_DIR)
    total = monthly_cost_from_rate_card(rate_card, fx_rates, Decimal("8.99"), 1)
    assert total == Decimal("72.58")


def test_build_snapshot_june_2026_shows_liquidity_burn() -> None:
    product = load_product(DATA_DIR)
    models = load_pricing_models(DATA_DIR)
    members = load_membership(DATA_DIR)
    revenue = load_revenue(DATA_DIR)
    monthly_costs = load_monthly_platform_costs(DATA_DIR)

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

    assert snapshot.active_members == 1
    assert snapshot.monthly_revenue == Decimal("8.99")
    assert snapshot.monthly_platform_cost == Decimal("72.58")
    assert snapshot.period_net_liquidity == Decimal("-63.97")
    assert snapshot.liquidity_status == "burning"
    assert snapshot.gross_margin == Decimal("-63.59")


def test_liquidity_summary_tracks_budget_burn_through_june_2026() -> None:
    budget = load_budget(DATA_DIR)
    revenue = load_revenue(DATA_DIR)
    monthly_costs = load_monthly_platform_costs(DATA_DIR)

    summary = build_liquidity_summary(budget, revenue, monthly_costs, "2026-06")

    assert summary.initial_budget == Decimal("1000.00")
    assert summary.cumulative_platform_cost == Decimal("1158.24")
    assert summary.cumulative_member_payments == Decimal("68.88")
    assert summary.cumulative_net_liquidity == Decimal("-1089.36")
    assert summary.remaining_budget == Decimal("-89.36")
    assert summary.liquidity_status == "burning"
    assert summary.months_tracked == 16


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

    report = generate_dashboard(DATA_DIR, "2026-06")
    assert "Liquidity & Budget" in report
    assert "Monthly History" in report
    assert "2025-03" in report
    assert "2025-11" in report
    assert "remaining budget" not in report.lower() or "Remaining budget" in report
    assert "-89.36" in report