"""Adapter: mypy text output normalized to Finding[]."""
from __future__ import annotations

import re

from scripts.manifest import Finding


_LINE_RE = re.compile(
    r"^(?P<file>[^:]+):(?P<line>\d+):\s*"
    r"(?P<severity>error|warning|note):\s*"
    r"(?P<message>.+?)"
    r"(?:\s+\[(?P<code>[a-z\-]+)\])?\s*$"
)

_SEVERITY = {"error": "medium", "warning": "low", "note": None}


def parse_mypy_output(stdout: str) -> list[Finding]:
    out: list[Finding] = []
    for raw in stdout.splitlines():
        m = _LINE_RE.match(raw)
        if not m:
            continue
        sev = _SEVERITY.get(m.group("severity"))
        if sev is None:
            continue
        out.append(Finding(
            tool="mypy",
            rule_id=m.group("code") or "",
            severity=sev,
            file=m.group("file"),
            line=int(m.group("line")),
            end_line=int(m.group("line")),
            message=m.group("message"),
        ))
    return out