"""Bind bounded-browser results to the exact requested package and contract."""


def failure_class(runtime, behavior):
    """Classify failures for diagnosis only; never authorize a passing receipt."""
    if any(runtime.get(key) is True for key in (
        'timed_out', 'cpu_budget_exhausted', 'output_budget_exhausted', 'memory_budget_exhausted'
    )):
        return 'EXECUTION_BUDGET_EXHAUSTED'
    if (not isinstance(behavior, dict)
            or behavior.get('error') == 'BROWSER_DRIVER_DID_NOT_REPORT'):
        return 'BROWSER_DRIVER_FAILURE'
    if runtime.get('remaining_job_processes') != 0:
        return 'BROWSER_RUNTIME_FAILURE'
    # The driver deliberately exits 1 for a reported failed assertion.
    if (runtime.get('returncode') in (0, 1)
            and behavior.get('status') == 'FAIL'
            and isinstance(behavior.get('assertion_failure'), dict)):
        return 'BEHAVIOR_CHECK_FAILED'
    if runtime.get('returncode') != 0:
        return 'BROWSER_RUNTIME_FAILURE'
    if behavior.get('status') == 'FAIL':
        return 'BEHAVIOR_CHECK_FAILED'
    return 'EVIDENCE_BINDING_FAILURE'


def accepted(runtime, behavior, package_digest, contract_digest, overlay_digest=None, dependency_digest=None):
    return (
        runtime.get("returncode") == 0
        and runtime.get("timed_out") is False
        and runtime.get("cpu_budget_exhausted") is False
        and runtime.get("output_budget_exhausted") is False
        and runtime.get("memory_budget_exhausted", False) is False
        and runtime.get("remaining_job_processes") == 0
        and behavior.get("status") == "PASS"
        and behavior.get("package_digest") == package_digest
        and behavior.get("contract_digest") == contract_digest
        and behavior.get("overlay_digest") == overlay_digest
        and behavior.get("dependency_digest") == dependency_digest
    )