import path from "node:path";
import type { AdapterEnvironmentCheck, AdapterEnvironmentTestResult } from "./types.js";

export function summarizeStatus(checks: AdapterEnvironmentCheck[]): AdapterEnvironmentTestResult["status"] {
  if (checks.some((check) => check.level === "error")) return "fail";
  if (checks.some((check) => check.level === "warn")) return "warn";
  return "pass";
}

export function isNonEmpty(value: unknown): value is string {
  return typeof value === "string" && value.trim().length > 0;
}

export function firstNonEmptyLine(text: string): string {
  return (
    text
      .split(/\r?\n/)
      .map((line) => line.trim())
      .find(Boolean) ?? ""
  );
}

export function commandLooksLike(command: string, expected: string): boolean {
  const base = path.basename(command).toLowerCase();
  return base === expected || base === `${expected}.cmd` || base === `${expected}.exe`;
}

export function summarizeProbeDetail(stdout: string, stderr: string, parsedError?: string | null): string | null {
  const raw = parsedError?.trim() || firstNonEmptyLine(stderr) || firstNonEmptyLine(stdout);
  if (!raw) return null;
  const clean = raw.replace(/\s+/g, " ").trim();
  const max = 240;
  return clean.length > max ? `${clean.slice(0, max - 1)}…` : clean;
}

export function normalizeEnv(input: unknown): Record<string, string> {
  if (typeof input !== "object" || input === null || Array.isArray(input)) return {};
  const env: Record<string, string> = {};
  for (const [key, value] of Object.entries(input as Record<string, unknown>)) {
    if (typeof value === "string") env[key] = value;
  }
  return env;
}