"""Adapter: selene --display-style=json normalized to Finding[]."""
from __future__ import annotations

import json

from scripts.manifest import Finding


_SEVERITY = {"Error": "high", "Warning": "medium", "Note": "low"}


def parse_selene_output(stdout: str) -> list[Finding]:
    try:
        payload = json.loads(stdout)
    except json.JSONDecodeError:
        return []
    if not isinstance(payload, list):
        return []
    out: list[Finding] = []
    for item in payload:
        code = item.get("code", {})
        span = item.get("span", {})
        start = span.get("start", {})
        end_span = span.get("end", {})
        out.append(Finding(
            tool="selene",
            rule_id=code.get("name", "unknown"),
            severity=_SEVERITY.get(code.get("severity", ""), "medium"),
            file=item.get("filename", ""),
            line=start.get("line", 0),
            end_line=end_span.get("line", start.get("line", 0)),
            message=item.get("primary_label", ""),
        ))
    return out