'use strict'

const { expect } = require('chai')
const config = require('./lib/test-config')
const fetch = require('node-fetch')
const fs = require('fs')
const isPng = require('is-png')
const isSvg = require('is-svg')
const path = require('path')
const serverHelpers = require('./lib/in-process-server-test-helpers')
const sinon = require('sinon')
const svg2img = require('./gh-badges/lib/svg-to-img')

describe('The server', function() {
  const baseUri = `http://127.0.0.1:${config.port}`

  let server
  before('Start running the server', function() {
    this.timeout(5000)
    server = serverHelpers.start()
  })
  after('Shut down the server', function() {
    serverHelpers.stop(server)
  })

  it('should produce colorscheme badges', async function() {
    // This is the first server test to run, and often times out.
    this.timeout(5000)
    const res = await fetch(`${baseUri}/:fruit-apple-green.svg`)
    expect(res.ok).to.be.true
    expect(await res.text())
      .to.satisfy(isSvg)
      .and.to.include('fruit')
      .and.to.include('apple')
  })

  it('should produce colorscheme PNG badges', async function() {
    this.timeout(5000)
    const res = await fetch(`${baseUri}/:fruit-apple-green.png`)
    expect(res.ok).to.be.true
    expect(await res.buffer()).to.satisfy(isPng)
  })

  it('should preserve label case', async function() {
    const res = await fetch(`${baseUri}/:fRuiT-apple-green.svg`)
    expect(res.ok).to.be.true
    expect(await res.text())
      .to.satisfy(isSvg)
      .and.to.include('fRuiT')
  })

  // https://github.com/badges/shields/pull/1319
  it('should not crash with a numeric logo', async function() {
    const res = await fetch(`${baseUri}/:fruit-apple-green.svg?logo=1`)
    expect(res.ok).to.be.true
    expect(await res.text())
      .to.satisfy(isSvg)
      .and.to.include('fruit')
      .and.to.include('apple')
  })

  it('should not crash with a numeric link', async function() {
    const res = await fetch(`${baseUri}/:fruit-apple-green.svg?link=1`)
    expect(res.ok).to.be.true
    expect(await res.text())
      .to.satisfy(isSvg)
      .and.to.include('fruit')
      .and.to.include('apple')
  })

  it('should not crash with a boolean link', async function() {
    const res = await fetch(`${baseUri}/:fruit-apple-green.svg?link=true`)
    expect(res.ok).to.be.true
    expect(await res.text())
      .to.satisfy(isSvg)
      .and.to.include('fruit')
      .and.to.include('apple')
  })

  context('with svg2img error', function() {
    const expectedError = fs.readFileSync(
      path.resolve(__dirname, 'public', '500.html')
    )

    let toBufferStub
    beforeEach(function() {
      toBufferStub = sinon
        .stub(svg2img._imageMagick.prototype, 'toBuffer')
        .callsArgWith(1, Error('whoops'))
    })
    afterEach(function() {
      toBufferStub.restore()
    })

    it('should emit the 500 message', async function() {
      const res = await fetch(`${baseUri}/:some_new-badge-green.png`)
      // This emits status code 200, though 500 would be preferable.
      expect(res.status).to.equal(200)
      expect(await res.text()).to.include(expectedError)
    })
  })

  describe('analytics endpoint', function() {
    it('should return analytics in the expected format', async function() {
      const res = await fetch(`${baseUri}/$analytics/v1`)
      expect(res.ok).to.be.true
      const json = await res.json()
      const expectedKeys = [
        'vendorMonthly',
        'rawMonthly',
        'vendorFlatMonthly',
        'rawFlatMonthly',
        'vendorFlatSquareMonthly',
        'rawFlatSquareMonthly',
      ]
      expect(json).to.have.all.keys(...expectedKeys)

      Object.values(json).forEach(stats => {
        expect(stats)
          .to.be.an('array')
          .with.length(36)
      })
    })
  })
})