ebt-vue3/src/sutta-duration.mjs

Vue3 Library for SuttaCentral Voice EBT-Sites

import { logger } from 'log-instance/index.mjs';
import { MerkleJson } from 'merkle-json/index.mjs';

const SUID_DURATION_URL = [
  `https://raw.githubusercontent.com/sc-voice/scv-server`,
  `master/src/assets/suid-duration.json`,
].join('/');

export default class SuttaDuration {
  constructor(opts = {}) {
    (opts.logger || logger).logInstance(this, opts);
    this.language = opts.language || 'en';
    this.voice = opts.voice || 'amy';
    if (typeof opts.fetch !== 'function') {
      throw new Error('SuttaDuration() fetch callback is required');
    }
    this.fetch = opts.fetch;
  }

  async initialize() {
    try {
      if (this.initialized) { return this; }

      let url = SUID_DURATION_URL;
      let fetch = this.fetch;
      let res = await fetch(url, { 
        headers: { Accept: 'text/plain' } 
      });
      this.suidDuration = await res.json();
      this.initialized = true;
      return this;
    } catch (e) {
      this.warn(`initialize()`, e.message);
      throw e;
    }
  }

  duration(suid) {
    let {
      language,
      suidDuration,
      voice,
    } = this;
    let langMap = suidDuration[language] || {};
    let voiceMap = langMap[voice] || {};
    return voiceMap[suid]; // duration or undefined
  }

}