function randint (from, to) {
  return from + Math.floor((Math.random() * (to-from)));
}

function choice (arr) {
  let ri = randint(0, arr.length-1);
  let ret = arr[ri];
  arr.splice(ri, 1);
  return ret;
}

fetch("terms.json")
  .then(response => response.json())
  .then(terms => {
    console.log("terms", terms);
    let call = document.querySelector("#call");
    let template = call.querySelector(".phrase");
    for (var i=0; i<20; i++) {
      let nn = template.cloneNode(true);
      call.appendChild(nn);   
      nn.querySelector(".actor").innerHTML = choice(terms['actor']);
      nn.querySelector(".action").innerHTML = choice(terms['action']);
      if (randint(0, 2) == 0) {
        nn.querySelector(".prefix").innerHTML = choice(terms['prefix']) + '-';
      } else {
        nn.querySelector(".prefix").remove();
      }
      nn.querySelector(".sort").innerHTML = choice(terms['sort']);
      nn.querySelector(".media").innerHTML = choice(terms['media']);
    }
    template.style.display = "none";
  });