import { log } from './log.mjs'
import { website, exports } from '../config.mjs'
import { randomString } from './crypto.mjs'
import fs from 'fs'

/*
 * Capitalizes a string
 */
export const capitalize = (string) => string.charAt(0).toUpperCase() + string.slice(1)

/*
 * Cleans a string (typically email) for hashing
 */
export const clean = (string) => {
  if (typeof string === 'number') string = string.toString()
  if (typeof string !== 'string') throw 'clean() only takes a string or number as input'

  return string.toLowerCase().trim()
}

/*
 * I find JSON.stringify to long to type, and prone to errors
 * So I make an alias here: asJson
 */
export const asJson = JSON.stringify

/*
 * Builds a url using the correct scheme, language and domain
 */
export const i18nUrl = (lang, path) => {
  let url = `${website.scheme}://${website.domain}`
  if (lang !== 'en') url += `/${lang}`

  return url + path
}

/*
 * Writes a pojo to disk as JSON under a random name
 * It is used to export account data
 */
export const writeExportedData = (data) => {
  const name = randomString()
  try {
    fs.writeFileSync(`${exports.dir}${name}.json`, JSON.stringify(data, null, 2))
  } catch (err) {
    log.warn(err, 'Failed to write export file')
  }

  return exports.url + name + '.json'
}