roam-copy-daily-template.js

const templateName = "Daily Template";

function deepPullNode(eid) {
  return roamAlphaAPI.pull(`[:node/title {:block/children [:db/id :block/order :block/string { :block/children ...}]}]`, eid);
}

function nodeByTitle(title) {
  return roamAlphaAPI.q(`[:find ?e :where [?e :node/title "${title}"]]`);
}

function nodeToString(deepEntity, level = 0) {
  const indent = (level + 1) * 4;
  const children = (deepEntity[":block/children"] || [])
  	.sort((a, b) => a[':block/order'] - b[':block/order'])
  	.map(child => {
      const childStr = nodeToString(child, level + 1);
      return `${" ".repeat(indent)}- ${childStr}`;
    });
  return `${deepEntity[":block/string"] || ""}
${children.join("\n")}`;
}

function dailyTemplateStr() {
  const eid = nodeByTitle(templateName)[0][0];
  const entity = deepPullNode(eid);

  return nodeToString(entity);
}

function onHashChange(evt, repeat) {  
  const hash = window.location.href.split("#")[1];
  if (hash === `/app/${graph}`) {
    const today = moment().format("MMMM Do, YYYY");
    const todayQuery = nodeByTitle(today);
	if (todayQuery.length > 0) {
      const todayEnt = deepPullNode(todayQuery[0][0]);
      if (!(todayEnt[":block/children"] || []).some(el => (el[":block/string"] || "").length > 0)) {
        const str = dailyTemplateStr();
      	// click the first node
      	document.querySelector(".rm-block-text").dispatchEvent(new MouseEvent("mousedown", {
          view: window,
          buttons: 1,
          bubbles: true,
          cancelable: true
        }));
        
        // pause to let roam update the active textarea
      	window.setTimeout(function() {
          const textarea = document.querySelector("textarea:first-of-type");
          if (textarea.value.length === 0) {
            textarea.value = str;
            const data = new DataTransfer();
            data.setData("text", str);
            textarea.dispatchEvent(
              new ClipboardEvent("paste", { clipboardData: data, data: str, view: window, bubbles: true, cancelable: true })
            );
          }          
        }, 100);
      }
    }
  }
  
  if (repeat) {
    setTimeout(() => onHashChange(null, true), 1000);
  }
}

function loadJS(url) {
  if (document.querySelector(`script[src='${url}']`) !== null) {
    return Promise.resolve();
  }
  return new Promise((resolve, reject) => {
    const tag = document.createElement("script");
    tag.src = url;
    tag.onload = () => resolve();
    tag.onerror = () => reject();
    
    document.head.appendChild(tag);
  });
}

async function init() {
  await loadJS("https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.27.0/moment.min.js");
  
  return { graph: localStorage.getItem("lastUsedGraph") };
}

init().then(data => {
  window.removeEventListener("hashchange", onHashChange);
  window.addEventListener("hashchange", onHashChange);

  setTimeout(() => onHashChange(null, true), 1000);
});