delete require.cache[require.resolve('..')]

let fs = require('fs')
let { spyOn, restoreAll } = require('nanospy')
let { test } = require('uvu')
let { equal, is } = require('uvu/assert')

let browserslist = require('..')

let originData = browserslist.data

function createDate(monthBack) {
  let releaseTime = Date.now() - monthBack * 30 * 24 * 60 * 60 * 1000
  return releaseTime / 1000
}

let youngerSixMonthsData = {
  ie: {
    name: 'ie',
    released: ['9', '10', '11'],
    versions: ['9', '10', '11'],
    releaseDate: {
      9: createDate(14),
      10: createDate(8),
      11: createDate(7)
    }
  },
  edge: {
    name: 'edge',
    released: ['14', '15', '16', '17', '18'],
    versions: ['14', '15', '16', '17', '18'],
    releaseDate: {
      14: createDate(8),
      15: createDate(6),
      16: createDate(5),
      17: createDate(4),
      18: null
    }
  },
  bb: {
    name: 'bb',
    released: [],
    versions: [],
    releaseDate: {}
  }
}

let olderSixMonthsData = {
  ie: {
    name: 'ie',
    released: ['9', '10', '11'],
    versions: ['9', '10', '11'],
    releaseDate: {
      9: createDate(7),
      10: createDate(8),
      11: createDate(10)
    }
  },
  edge: {
    name: 'edge',
    released: ['14', '15', '16', '17', '18'],
    versions: ['14', '15', '16', '17', '18'],
    releaseDate: {
      14: createDate(9),
      15: createDate(8),
      16: createDate(12),
      17: createDate(7),
      18: null
    }
  },
  bb: {
    name: 'bb',
    released: [],
    versions: [],
    releaseDate: {}
  }
}

function findPackage(text) {
  return /package.json/.test(text.toString())
}

function mockStatSync() {
  return {
    isFile: () => true
  }
}

let warn
test.before.each(() => {
  warn = spyOn(console, 'warn', () => true)
})

test.after.each(() => {
  restoreAll()
  browserslist.clearCaches()
  delete process.env.BROWSERSLIST_IGNORE_OLD_DATA
})

test.after(() => {
  browserslist.data = originData
})

test('does not print warning', () => {
  browserslist.data = youngerSixMonthsData
  browserslist('last 2 versions')
  warn(warn.called, false)
})

test('shows warning', () => {
  browserslist.data = olderSixMonthsData
  spyOn(fs, 'existsSync', findPackage)
  spyOn(fs, 'statSync', mockStatSync)
  browserslist('last 2 versions')

  const monthsPassed = createDate.arguments ? createDate.arguments : 0;
  var monthWord = monthsPassed > 1 ? 'months' : 'month'
  var monthsOldText = monthsPassed + ' ' + monthWord + ' old.'

  if (monthsPassed === 0) return;

  equal(warn.calls, [
    [
      'Browserslist: caniuse-lite is '+ monthsOldText +' . Please run:\n' +
        '  npx update-browserslist-db@latest\n' +
        '  Why you should do it regularly: ' +
        'https://github.com/browserslist/update-db#readme'
    ]
  ])
})

test('hides warning on request', () => {
  process.env.BROWSERSLIST_IGNORE_OLD_DATA = 'true'
  browserslist.data = olderSixMonthsData
  spyOn(fs, 'existsSync', findPackage)
  spyOn(fs, 'statSync', mockStatSync)
  browserslist('last 2 versions')
  is(warn.called, false)
})

test('shows warning only once', () => {
  browserslist.data = olderSixMonthsData
  spyOn(fs, 'existsSync', findPackage)
  spyOn(fs, 'statSync', mockStatSync)
  browserslist('last 2 versions')
  browserslist('last 2 versions')
  is(warn.callCount, 1)
})

test.run()
