"""Adapter: lizard --csv output → Finding[]."""
from __future__ import annotations

from scripts.manifest import Finding


def _severity_for_ccn(ccn: int) -> str | None:
    if ccn >= 20:
        return "high"
    if ccn >= 10:
        return "medium"
    return None


def parse_lizard_output(stdout: str) -> list[Finding]:
    out: list[Finding] = []
    for raw in stdout.splitlines():
        parts = raw.strip().split(",")
        if len(parts) < 6:
            continue
        try:
            ccn = int(parts[1])
        except ValueError:
            continue
        severity = _severity_for_ccn(ccn)
        if severity is None:
            continue
        location = parts[5]
        loc_parts = location.split("@")
        if len(loc_parts) < 3:
            continue
        name, line_str, file_path = loc_parts[0], loc_parts[1], loc_parts[2]
        try:
            line = int(line_str)
        except ValueError:
            continue
        out.append(Finding(
            tool="lizard",
            rule_id=f"lizard:ccn={ccn}",
            severity=severity,
            file=file_path,
            line=line,
            end_line=line,
            message=f"function {name} has CCN {ccn}",
        ))
    return out