index.js

const url = require('url')
const qs = require('qs')
const Fuse = require('fuse.js')
const api = require('router')()
const database = require('./database.js')

const { NOW } = process.env

const origin = NOW ? 'https://api.startupphotos.com' : 'http://localhost:3001'

const db = database.map(({ id, tags, description }) => ({
  id,
  tags,
  description,
  images: {
    placeholder: `${origin}/static/processed/${id}/placeholder.jpg`,
    display: `${origin}/static/processed/${id}/display.jpg`,
    raw: `${origin}/static/raw/${id}.jpg`
  }
}))

const index = new Fuse(db, {
  keys: [
    'tags',
    'description'
  ]
})

api.get('/photos', (req, res) => {
  const args = qs.parse(url.parse(req.url) || '')

  const limit = args.limit ? parseInt(args.limit) : 18
  const page = args.page ? parseInt(args.page) : null
  const offset = args.offset ? parseInt(args.offset) : null

  let results

  if (page !== null || offset !== null) {
    const start = offset || (limit * page || 0)
    const end = ((page || 0) + 1) * limit
    results = db.slice(start, end)
  } else {
    results = db.slice(0, limit)
  }

  res.end(JSON.stringify(results))
})

api.get('/photos/:id', (req, res) => {
  const { id } = req.params
  const photo = db.filter(i => i.id === id)[0]

  if (photo) {
    res.end(JSON.stringify(photo))
  } else {
    res.statusCode = 404
    res.end(JSON.stringify({
      errors: [
        `photo ${id} does not exist`
      ]
    }))
  }
})

api.get('/search/:query', (req, res) => {
  const { query } = req.params

  res.end(JSON.stringify(index.search(query)))
})

require('connect')()
  .use(require('compression')())
  .use('/static/raw', require('serve-static')('raw', {
    setHeaders (res, path) {
      res.setHeader('Content-Disposition', require('content-disposition')(path))
    }
  }))
  .use('/static/processed', require('serve-static')('static', {
    maxAge: '1d'
  }))
  .use((req, res, next) => {
    res.setHeader('Content-Type', 'application/json')
    next()
  })
  .use('/api/v1', api)
  .use((req, res) => {
    res.end(JSON.stringify({
      message: 'Welcome to the Startup Stock Photos API'
    }))
  })
  .listen(3001)