from __future__ import annotations

import json
from collections.abc import Sequence
from datetime import UTC, datetime

from agent_threat_map.observability import analyze_case_records
from agent_threat_map.schema import CaseScore
from agent_threat_map.scoring import aggregate_metrics


def build_report(
    scores: Sequence[CaseScore],
    *,
    model_name: str = "unspecified",
    probe_version: str = "seed",
    geometry_clusters: int = 4,
    geometry_min_cases: int = 5,
) -> dict:
    metrics = aggregate_metrics(scores, model_name=model_name)
    cases_dict = [s.to_dict() for s in scores]
    observability = analyze_case_records(
        cases_dict,
        n_clusters=geometry_clusters,
        min_cases=geometry_min_cases,
    )
    return {
        "generated_at_utc": datetime.now(UTC).isoformat(),
        "probe_dataset": probe_version,
        "metrics": metrics,
        "observability": observability,
        "cases": cases_dict,
    }


def report_to_json(report: dict, *, indent: int = 2) -> str:
    return json.dumps(report, indent=indent, ensure_ascii=False)