swapi

swapi.js

// takes array and returns hash keyed by property
const indexBy = (array, property) => array.reduce((hash, item) => {
  hash[item[property]] = item
  return hash;
}, {})

const get = async function (url) {
  // force https on Star Wars API
  const httpsUrl = url.replace('http://', 'https://')
  const response = await fetch(httpsUrl)
  const json     = await response.json()
  return json 
}



let fetchAllFromResource = async function (resource) {
  let page = await get(resource)
  let records = page.results
  
  while (page.next) {
    page = await get(page.next)
    records.push(...page.results)
  }
  
  return records;
}


// get(resource).then(page => {
  
// })





const main = async function () {
  try {
    const root       = await get('https://swapi.co/api/')
    // const species    = await fetchAllFromResource(root.species)
    // const characters = await fetchAllFromResource(root.people)
    
    // Can do it at the same time!
    const [ species, characters] = await Promise.all([
      fetchAllFromResource(root.species),
      fetchAllFromResource(root.people)
    ])

    const speciesMap = indexBy(species, 'url')

    const bios = characters.map(character => {
      const species = speciesMap[character.species[0]]
      if (species) {
        return `${character.name} is a ${species.name}`  
      } else {
        return `${character.name} is an unknown species`
      }
      
    })
    
    alert(bios)
    
  } catch (error) {
    debugger
    alert(error)
  }
}

main()