// Copyright 2019-2021 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
// SPDX-License-Identifier: MIT

import { existsSync } from 'fs'
import { join, normalize, resolve, sep, isAbsolute } from 'path'
import logger from './logger'
import chalk from 'chalk'

const warn = logger('tauri', chalk.red)

function resolvePath(basePath: string, dir: string): string {
  return dir && isAbsolute(dir) ? dir : resolve(basePath, dir)
}

const getAppDir = (): string => {
  let dir = process.cwd()
  let count = 0

  // only go up three folders max
  while (dir.length > 0 && !dir.endsWith(sep) && count <= 2) {
    if (existsSync(join(dir, 'src-tauri', 'tauri.conf.json'))) {
      return dir
    }
    count++
    dir = normalize(join(dir, '..'))
  }

  warn(
    "Couldn't find recognize the current folder as a part of a Tauri project"
  )
  process.exit(1)
}

const appDir = getAppDir()
const tauriDir = resolve(appDir, 'src-tauri')

const resolveDir = {
  app: (dir: string) => resolvePath(appDir, dir),
  tauri: (dir: string) => resolvePath(tauriDir, dir)
}

export { appDir, tauriDir, resolveDir as resolve }