utils.ts

import sharp from "sharp";
import path from "path";
import { fileURLToPath } from "url";
import type { ApiResponse } from "./apiClient.js";

export function sanitizeUrlParam(param: string): string {
  // Remove any characters that could be used for command injection
  return param.replace(/[;&|`$(){}[\]<>]/g, "");
}

const ONE_MB = 1048576;

//Compresses a base64 image intelligently to keep it under 1 MB if needed.
export async function maybeCompressBase64(base64: string): Promise<string> {
  const buffer = Buffer.from(base64, "base64");

  if (buffer.length <= ONE_MB) {
    return base64;
  }

  const sizeRatio = 1048576 / buffer.length;
  const estimatedQuality = Math.floor(sizeRatio * 100);
  const quality = Math.min(95, Math.max(30, estimatedQuality));

  const compressedBuffer = await sharp(buffer).png({ quality }).toBuffer();

  return compressedBuffer.toString("base64");
}

export async function assertOkResponse(
  response: Response | ApiResponse,
  action: string,
) {
  if (!response.ok) {
    if (response.status === 404) {
      throw new Error(`Invalid session ID for ${action}`);
    }
    throw new Error(
      `Failed to fetch logs for ${action}: ${response.statusText}`,
    );
  }
}

export function detectRunMode(): "npx" | "local" | "unknown" {
  try {
    const scriptPath = fileURLToPath(import.meta.url);
    const normalizedPath = path.normalize(scriptPath);
    const npxPattern = path.sep + "_npx" + path.sep;
    return normalizedPath.includes(npxPattern) ? "npx" : "local";
  } catch {
    return "unknown";
  }
}