export const toPosixPath = (p: string) => p.replace(/\\/g, '/')

export const toWindowsPath = (p: string) => p.replace(/\//g, '\\')

export const normalizePath = (p: string) => {
  const parts = p.replace(/\\/g, '/').split('/')
  const stack: string[] = []
  for (const part of parts) {
    if (!part || part === '.') continue
    if (part === '..') {
      stack.pop()
      continue
    }
    stack.push(part)
  }
  return stack.join('/')
}

export const joinPaths = (...paths: string[]) => {
  return paths.map(normalizePath).join('/').replace(/\/+/g, '/')
}

export const getDirectoryName = (filePath: string) => {
  const normalized = normalizePath(filePath)
  const lastSlash = normalized.lastIndexOf('/')
  return lastSlash === -1 ? '' : normalized.slice(0, lastSlash)
}

export const getFileName = (filePath: string) => {
  const normalized = normalizePath(filePath)
  const lastSlash = normalized.lastIndexOf('/')
  return lastSlash === -1 ? normalized : normalized.slice(lastSlash + 1)
}

export const getFileExtension = (filePath: string) => {
  const fileName = getFileName(filePath)
  const lastDot = fileName.lastIndexOf('.')
  return lastDot === -1 ? '' : fileName.slice(lastDot + 1)
}

export const removeExtension = (filePath: string) => {
  const ext = getFileExtension(filePath)
  if (!ext) return filePath
  return filePath.slice(0, -(ext.length + 1))
}

export const isAbsolutePath = (p: string) => {
  return p.startsWith('/') || /^[A-Za-z]:/.test(p)
}

export const isHiddenPath = (p: string) => {
  const normalized = normalizePath(p)
  return normalized.split('/').some(part => part.startsWith('.'))
}