import { spawnSync } from "child_process";
import * as os from "os";
import fs from "fs";

export const knownAikidoTools = [
  { tool: "npm", aikidoCommand: "aikido-npm" },
  { tool: "npx", aikidoCommand: "aikido-npx" },
  { tool: "yarn", aikidoCommand: "aikido-yarn" },
  { tool: "pnpm", aikidoCommand: "aikido-pnpm" },
  { tool: "pnpx", aikidoCommand: "aikido-pnpx" },
  // When adding a new tool here, also update the expected alias in the tests (setup.spec.js, teardown.spec.js)
  // and add the documentation for the new tool in the README.md
];

export function doesExecutableExistOnSystem(executableName) {
  if (os.platform() === "win32") {
    const result = spawnSync("where", [executableName], { stdio: "ignore" });
    return result.status === 0;
  } else {
    const result = spawnSync("which", [executableName], { stdio: "ignore" });
    return result.status === 0;
  }
}

export function removeLinesMatchingPattern(filePath, pattern) {
  if (!fs.existsSync(filePath)) {
    return;
  }

  const fileContent = fs.readFileSync(filePath, "utf-8");
  const lines = fileContent.split(os.EOL);
  const updatedLines = lines.filter((line) => !pattern.test(line));
  fs.writeFileSync(filePath, updatedLines.join(os.EOL), "utf-8");
}

export function addLineToFile(filePath, line) {
  if (!fs.existsSync(filePath)) {
    fs.writeFileSync(filePath, "", "utf-8");
  }

  const fileContent = fs.readFileSync(filePath, "utf-8");
  const updatedContent = fileContent + os.EOL + line;
  fs.writeFileSync(filePath, updatedContent, "utf-8");
}