import { assert } from 'chai'
import { getRCFileVars } from '../src/parse-rc-file'

const rcFilePath = './test/test-files/.rc-test'
const rcJSONFilePath = './test/test-files/.rc-test.json'

describe('getRCFileVars', (): void => {
  it('should parse an .rc file with the given environment', async (): Promise<void> => {
    const res = await getRCFileVars({ environments: ['production'], filePath: rcFilePath })
    assert.exists(res)
    assert.deepEqual(res, {
      THANKS: 'FOR WHAT?!',
      ANSWER: 42,
      ONLY: 'IN PRODUCTION',
      BRINGATOWEL: true,
    })
  })

  it('should parse a .rc.json file', async (): Promise<void> => {
    const res = await getRCFileVars({ environments: ['test'], filePath: rcJSONFilePath })
    assert.exists(res)
    assert.deepEqual(res, {
      THANKS: 'FOR MORE FISHIES',
      ANSWER: 21,
    })
  })

  it('should fail to find .rc file', async (): Promise<void> => {
    try {
      await getRCFileVars({ environments: ['bad'], filePath: 'bad-path' })
      assert.fail('Should not get here!')
    }
    catch (e) {
      assert.instanceOf(e, Error)
      assert.match(e.message, /\.rc file at path/gi)
    }
  })

  it('should fail to parse a .rc file if environment does not exist', async (): Promise<void> => {
    try {
      await getRCFileVars({ environments: ['bad'], filePath: rcFilePath })
      assert.fail('Should not get here!')
    }
    catch (e) {
      assert.instanceOf(e, Error)
      assert.match(e.message, /environments/gi)
    }
  })

  it('should fail to parse an .rc file', async (): Promise<void> => {
    try {
      await getRCFileVars({ environments: ['bad'], filePath: './test/test-files/.rc-test-bad-format' })
      assert.fail('Should not get here!')
    }
    catch (e) {
      assert.instanceOf(e, Error)
      assert.match(e.message, /parse/gi)
    }
  })

  it('should parse an async js .rc file', async (): Promise<void> => {
    const env = await getRCFileVars({
      environments: ['production'],
      filePath: './test/test-files/.rc-test-async.js',
    })
    assert.deepEqual(env, {
      THANKS: 'FOR WHAT?!',
      ANSWER: 42,
      ONLY: 'IN PRODUCTION',
      BRINGATOWEL: true,
    })
  })
})