// src/plugin/index.ts
import fs from 'fs'
import path from 'path'
import { withDangerousMod, type ConfigPlugin } from '@expo/config-plugins'
import { applyExclusion, type NitroChuckerPluginProps } from './applyExclusion'

export function editPackageJson(
  projectRoot: string,
  props?: NitroChuckerPluginProps
): void {
  const pkgPath = path.join(projectRoot, 'package.json')
  const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf8'))
  const next = applyExclusion(pkg, props)
  // Skip the write when nothing semantically changed (avoid prebuild churn).
  if (JSON.stringify(next) === JSON.stringify(pkg)) return
  fs.writeFileSync(pkgPath, JSON.stringify(next, null, 2) + '\n')
}

const withNitroChucker: ConfigPlugin<NitroChuckerPluginProps | void> = (
  config,
  props
) => {
  // The edit targets the root package.json and is idempotent; run it on
  // whichever platform(s) prebuild so a single-platform prebuild still applies.
  for (const platform of ['ios', 'android'] as const) {
    config = withDangerousMod(config, [
      platform,
      (cfg) => {
        editPackageJson(cfg.modRequest.projectRoot, props ?? undefined)
        return cfg
      },
    ])
  }
  return config
}

export default withNitroChucker