"""AirSDB mode — V2 静态分析器模式。

多后端静态分析 (cppcheck / clang-tidy / clippy / go-vet / tsc)
以及 diff 模式（对比两次扫描结果）。
"""

from __future__ import annotations

from pathlib import Path

from air_runtime.sdb_backends import (
    BACKENDS,
    AnalysisDiff,
    AnalysisResult,
)


def run_static_analysis(
    project_root: Path,
    backend_name: str,
    target: Path | None = None,
) -> list[AnalysisResult]:
    """Run a single static-analysis backend and return findings."""
    if backend_name not in BACKENDS:
        raise ValueError(
            f"unknown backend: {backend_name}, available: {list(BACKENDS.keys())}"
        )
    return BACKENDS[backend_name].analyze(project_root, target)


def diff_analysis(
    before: list[AnalysisResult],
    after: list[AnalysisResult],
) -> dict:
    """Compare two scan results and return new / resolved / unchanged."""
    return AnalysisDiff().diff(before, after)


# ---------------------------------------------------------------------------
# CLI entry point
# ---------------------------------------------------------------------------

def main(args) -> None:
    project_root = Path(args.project).expanduser().resolve()
    backend = getattr(args, "backend", None) or "cppcheck"
    target = Path(args.target).expanduser().resolve() if getattr(args, "target", None) else None

    try:
        results = run_static_analysis(project_root, backend, target)
    except RuntimeError as exc:
        # Tool not installed — print hint and exit gracefully
        print(f"airplan_mode=sdb")
        print(f"backend={backend}")
        print(f"findings=0")
        print(f"error={exc}")
        return

    print(f"airplan_mode=sdb")
    print(f"backend={backend}")
    print(f"findings={len(results)}")
    for r in results[:10]:
        loc = f"{r.file}:{r.line}" if r.line is not None else r.file
        print(f"{loc}: {r.severity}: {r.message}")