import { resolve, isAbsolute } from "path";
import { homedir } from "os";

// Límite estricto para ahorro máximo de tokens y VRAM
export const MAX_OUTPUT_CHARS = 1200;

export function truncateOutput(text: string, maxChars = MAX_OUTPUT_CHARS): string {
  if (!text) return "";
  if (text.length <= maxChars) return text;
  return text.substring(0, maxChars) + "\n...[truncado para ahorrar contexto]";
}

export function getWorkspaceDir(): string {
  const home = homedir();
  if (process.env.NANO_FS_WORKSPACE && process.env.NANO_FS_WORKSPACE.trim()) {
    return resolvePath(process.env.NANO_FS_WORKSPACE.trim(), home);
  }
  if (process.env.WORKSPACE_DIR && process.env.WORKSPACE_DIR.trim()) {
    return resolvePath(process.env.WORKSPACE_DIR.trim(), home);
  }
  return resolve(home, "workspace");
}

export function resolvePath(filepath: string, baseDir = getWorkspaceDir()): string {
  const home = homedir();
  const normalized = (filepath || "").trim();

  if (!normalized) return baseDir;
  if (normalized === "~") return home;
  if (normalized.startsWith("~/") || normalized.startsWith("~\\")) {
    return resolve(home, normalized.slice(2));
  }
  if (normalized.startsWith("~")) return resolve(home, normalized.slice(1));
  if (isAbsolute(normalized)) return resolve(normalized);

  return resolve(baseDir, normalized);
}

import { resolve, isAbsolute } from "path";
import { homedir } from "os";

// Límite estricto para ahorro máximo de tokens y VRAM
export const MAX_OUTPUT_CHARS = 1200;

export function truncateOutput(text: string, maxChars = MAX_OUTPUT_CHARS): string {
  if (!text) return "";
  if (text.length <= maxChars) return text;
  return text.substring(0, maxChars) + "\n...[truncado para ahorrar contexto]";
}

export function getWorkspaceDir(): string {
  const home = homedir();
  if (process.env.NANO_FS_WORKSPACE && process.env.NANO_FS_WORKSPACE.trim()) {
    return resolvePath(process.env.NANO_FS_WORKSPACE.trim(), home);
  }
  if (process.env.WORKSPACE_DIR && process.env.WORKSPACE_DIR.trim()) {
    return resolvePath(process.env.WORKSPACE_DIR.trim(), home);
  }
  return resolve(home, "workspace");
}

export function resolvePath(filepath: string, baseDir = getWorkspaceDir()): string {
  const home = homedir();
  const normalized = (filepath || "").trim();

  if (!normalized) return baseDir;
  if (normalized === "~") return home;
  if (normalized.startsWith("~/") || normalized.startsWith("~\\")) {
    return resolve(home, normalized.slice(2));
  }
  if (normalized.startsWith("~")) return resolve(home, normalized.slice(1));
  if (isAbsolute(normalized)) return resolve(normalized);

  return resolve(baseDir, normalized);
}