import json
import os
import sys
import pathlib
# Ensure the repository root is on sys.path for pytest imports
ROOT = pathlib.Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

from marketcompiler_verifiable_dsl_edge_compi.core import LocalProblem, PlanDelta, AuditLog
from marketcompiler_verifiable_dsl_edge_compi.signer import Signer
from marketcompiler_verifiable_dsl_edge_compi.backtest import Backtester


def test_local_problem_serialization():
    lp = LocalProblem(id="lp-001", assets=["AAPL", "MSFT"], objectives={"return": 0.1}, constraints={"max_drawdown": 0.2})
    s = lp.to_json()
    lp2 = LocalProblem.from_json(s)
    assert lp2.id == lp.id
    assert lp2.assets == lp.assets


def test_plan_delta_signing_and_json_roundtrip():
    delta = PlanDelta(delta={"step": "init"}, author="tester", contract_id="c1", version=1)
    payload = delta.to_json()
    sig = Signer.sign(payload)
    assert Signer.verify(payload, sig)

    # Roundtrip through JSON keeps signature validity conceptually
    delta2 = PlanDelta.from_json(payload)
    assert delta2.version == delta.version


def test_backtester_runs():
    lp = LocalProblem(id="lp-002", assets=["AAPL", "MSFT"], objectives={"return": 0.08}, constraints={"liquidity": 0.5})
    res = Backtester.run(lp)
    assert isinstance(res, dict)
    assert "score" in res