"""Require persisted complete SCADA input before final investigation conclusions."""

from datetime import datetime

from app.domain.domain_errors import require


def require_complete_scada_evidence(task: dict, evidence: list[dict], refs: list[str]) -> None:
    replay = task.get("source", {}).get("replay_context")
    if task.get("workflow") != "scada_anomaly" and not replay:
        return
    target = datetime.fromisoformat(
        replay["knowledge_cutoff"] if replay else task["trigger"]["occurred_at"]
    )
    for item in evidence:
        if item["evidence_id"] not in refs:
            continue
        snapshot = item.get("data_snapshot") or {}
        if snapshot.get("source") != "query_scada_readings" or snapshot.get("truncated"):
            continue
        result = snapshot.get("data") or {}
        data = result.get("data") if isinstance(result, dict) else None
        coverage = data.get("coverage") if isinstance(data, dict) else None
        if not coverage or coverage.get("mode") != "all_scada" or coverage.get("query_complete") is not True:
            continue
        window = result.get("window") or {}
        if not window.get("start") or not window.get("end"):
            continue
        start, end = (datetime.fromisoformat(window[key]) for key in ("start", "end"))
        if not start <= target <= end:
            continue
        if replay and (coverage.get("replay_id") != replay["replay_id"]
                       or coverage.get("batch_sequence") != replay["batch_sequence"]
                       or end != target):
            continue
        return
    require(False, "SCADA_COVERAGE_REQUIRED",
            "最终SCADA报告必须引用本轮全量读取证据。调用query_scada_readings并省略device_ids，"
            "在任务时间窗内读取全部授权设备、完整属性与观测，核对coverage和缺测清单后再发布。",
            status=409)