import test from 'node:test';
import assert from 'node:assert/strict';
import toolInvocation from '../src/shared/tool-invocation.cjs';
import processRunner from '../src/main/process-runner.cjs';

const { npmProbeCandidates } = toolInvocation;
const { run } = processRunner;

test('uses npm CLI through Node when doctor is launched by npm on Windows', () => {
  const candidates = npmProbeCandidates({
    platform: 'win32',
    execPath: 'C:\\Program Files\\nodejs\\node.exe',
    env: {
      npm_execpath: 'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
      npm_node_execpath: 'C:\\Program Files\\nodejs\\node.exe',
      ComSpec: 'C:\\Windows\\System32\\cmd.exe'
    }
  });
  assert.deepEqual(candidates[0], {
    file: 'C:\\Program Files\\nodejs\\node.exe',
    args: ['C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js', '--version'],
    source: 'npm_execpath'
  });
});

test('falls back to cmd.exe for npm command shims on Windows', () => {
  const candidates = npmProbeCandidates({
    platform: 'win32',
    execPath: 'C:\\Program Files\\nodejs\\node.exe',
    env: { ComSpec: 'C:\\Windows\\System32\\cmd.exe' }
  });
  assert.deepEqual(candidates, [{
    file: 'C:\\Windows\\System32\\cmd.exe',
    args: ['/d', '/s', '/c', 'npm --version'],
    source: 'windows-command-shim'
  }]);
});

test('uses npm directly on non-Windows systems', () => {
  assert.deepEqual(npmProbeCandidates({ platform: 'linux', env: {}, execPath: '/usr/bin/node' }), [
    { file: 'npm', args: ['--version'], source: 'path' }
  ]);
});


test('process runner accepts stdin for Git pathspec transport', async () => {
  const result = await run(process.execPath, ['-e', 'process.stdin.pipe(process.stdout)'], { input: 'a\0b\0' });
  assert.equal(result.stdout, 'a\0b\0');
});