git.r.bdr.sh - rbdr/prompt/blob - src/lib/stores/prompt.js

   1 import { readable } from 'svelte/store';
   2 import { browser } from '$app/env';
   3
   4 const internals = {
   5   kDataPrefix: 'http://localhost:3000/data/',
   6   kAdjectivesPath: '/adjectives.json',
   7   kNounsPath: '/nouns.json',
   8
   9   async get(locale, path) {
  10
  11     const shortLocale = locale.split('-')[0];
  12     const targetFile = internals.kDataPrefix + shortLocale + path;
  13     const data = browser && sessionStorage.getItem(targetFile);
  14
  15     if (data) {
  16       return JSON.parse(data);
  17     }
  18
  19     let newData = await (await fetch(targetFile)).json();
  20     browser && sessionStorage.setItem(targetFile, JSON.stringify(newData));
  21
  22     return newData;
  23   },
  24
  25   random(list) {
  26
  27     return list[Math.floor(Math.random() * list.length)];
  28   }
  29 };
  30
  31 export const getPrompt = function (locale) {
  32
  33   return readable(null, function (set) {
  34
  35     (async function() {
  36
  37       const adjectives = await internals.get(locale, internals.kAdjectivesPath);
  38       const nouns = await internals.get(locale, internals.kNounsPath);
  39
  40       set(`${internals.random(nouns)}, ${internals.random(nouns)}, ${internals.random(adjectives)}`);
  41     })();
  42
  43     return function stop() {};
  44   });
  45 };