package.ts

import type { PackageInfo } from './api/package'
import maxSatisfying from 'semver/ranges/max-satisfying'

/**
 * Encode a package name for use in npm registry URLs.
 * Handles scoped packages (e.g., @scope/name -> @scope%2Fname).
 */
export function encodePackageName(name: string): string {
  if (name.startsWith('@')) {
    return `@${encodeURIComponent(name.slice(1))}`
  }
  return encodeURIComponent(name)
}

export function resolveExactVersion(pkg: PackageInfo | undefined, version: string) {
  if (!pkg?.distTags)
    return null

  return pkg.distTags[version] ?? maxSatisfying(Object.keys(pkg.versionsMeta ?? {}), version)
}