from __future__ import annotations

from datetime import datetime, timezone

from vpp_contracts.report_request import ReportRequest
from vpp_skills.report import generate_report, resolve, verify_report

CLOCK = lambda: datetime(2026, 3, 14, 8, 30, tzinfo=timezone.utc)  # noqa: E731

SOLVER_OUTPUT = {
    "market_date": "2026-03-15",
    "prices_yuan_per_mwh": {"interval_minutes": 15, "date": "2026-03-15", "values": ["1.0"] * 96},
    "daily_energy_mwh": "1200.000",
    "expected_revenue_yuan": "510600.00",
    "revenue_distribution_yuan": {"p10": "432000.00", "p50": "510600.00", "p90": "588000.00"},
    "solver": {"name": "highs", "status": "OPTIMAL", "objective_value": "487020.00", "wall_time_ms": 12},
    "binding_constraints": ["daily_energy_max"],
}


def _req(kind="DAY_AHEAD_BID_SUMMARY") -> ReportRequest:
    return ReportRequest.model_validate(
        {
            "kind": kind,
            "market_date": "2026-03-15",
            "sources": [{"tool_call_id": "tc-001", "tool": "bid-optimization-milp", "version": "1.0.0", "output": SOLVER_OUTPUT}],
        }
    )


def test_every_metric_is_a_reference_that_resolves_to_its_value():
    req = _req()
    rep = generate_report(req, CLOCK)
    names = {m.name for m in rep.sections[0].metrics}
    assert {"expected_revenue_yuan", "daily_energy_mwh", "revenue_distribution_yuan.p10", "solver.objective_value"} <= names
    assert "prices_yuan_per_mwh" not in " ".join(names)  # curves are not inlined
    assert verify_report(rep, req) == []
    for m in rep.sections[0].metrics:
        assert m.value == resolve(SOLVER_OUTPUT, m.ref.path)
        assert m.ref.tool_call_id == "tc-001"


def test_units_inferred_from_field_names():
    rep = generate_report(_req(), CLOCK)
    units = {m.name: m.unit for m in rep.sections[0].metrics}
    assert units["expected_revenue_yuan"] == "yuan"
    assert units["daily_energy_mwh"] == "mwh"
    assert units["revenue_distribution_yuan.p90"] == "yuan"


def test_notes_carry_solver_status_and_binding_constraints():
    rep = generate_report(_req(), CLOCK)
    notes = " | ".join(rep.sections[0].notes)
    assert "solver status: OPTIMAL" in notes and "daily_energy_max" in notes


def test_deterministic_id_and_verify_catches_tampering():
    req = _req()
    a, b = generate_report(req, CLOCK), generate_report(req, CLOCK)
    assert a.id == b.id and a.id.startswith("rep-day_ahead_bid_summary-2026-03-15-")
    tampered = a.model_copy(deep=True)
    tampered.sections[0].metrics[0].value = "999999.00"
    assert verify_report(tampered, req)