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Add Suggestions to OAPEN Library

Adds suggestions to the sidebar on https://library.oapen.org when viewing a publication.

当前为 2023-05-10 提交的版本，查看 最新版本。

// ==UserScript==
// @name        Add Suggestions to OAPEN Library
// @namespace   Violentmonkey Scripts
// @match       *://library.oapen.org/handle/*
// @grant       none
// @version     1.0
// @author      OAPEN Suggestion Service
// @description Adds suggestions to the sidebar on https://library.oapen.org when viewing a publication.
// ==/UserScript==
const FETCH_URL_HOST = "https://oss.ebookfoundation.org";

async function mountSuggestions() {
  let sidebar = document.querySelector("#aspect_artifactbrowser_ItemViewer_div_item-view > div > div.row > div.col-sm-4");
  let suggestionsElement = document.createElement("div");
  suggestionsElement.className = "item-page-field-wrapper list-group";
  let heading = document.createElement("h5");
  heading.innerText = "Suggestions"
  suggestionsElement.appendChild(heading);

  let handle = window.location.pathname.split('/').slice(-2).join("/");
  const response = await fetch(FETCH_URL_HOST + "/api/" + handle);
  const resp = await response.json();

  if (!resp.items || !resp?.items?.suggestions) {
    console.error("No items in response!");
    return;
  }

  const { suggestions } = resp.items;

  if (suggestions.length === 0 || suggestions === []) {
    console.error("No suggestions in response!");
    return;
  }

  // create suggestions list element
  const suggestionsListElement = document.createElement("ul");
  suggestionsListElement.className = "suggestions-list";

  // create suggestions list items
  const suggestionsListItems = suggestions.slice(0, 4).map((suggestion) => {
    const listItem = document.createElement("li");
    listItem.className = "list-group-item ds-option";
    listItem.style.textAlign = "center";
    // make it a link
    const link = document.createElement("a");
    link.className = "suggestions-list-item-link";
    link.href = "https://library.oapen.org/handle/" + suggestion.suggestion;
    link.target = "_blank";
    link.innerText = suggestion.suggestion_name;
    // add the thumbail
    const thumbnail = document.createElement("img");
    const thumbnailDiv = document.createElement("div");
    thumbnailDiv.className = "thumbnail";
    thumbnail.className = "img-thumbnail";
    thumbnail.style.margin = "0 auto";
    thumbnail.src = suggestion.suggestion_thumbnail;
    // append it all together
    thumbnailDiv.appendChild(thumbnail);
    listItem.appendChild(thumbnailDiv);
    listItem.appendChild(link);
    return listItem;
  });

  // append suggestions list items to list
  suggestionsListItems.forEach((item) =>
    suggestionsListElement.appendChild(item)
  );

  // append list to suggestions element
  suggestionsElement.appendChild(suggestionsListElement);

  // append suggestions to sidebar
  sidebar.appendChild(suggestionsElement);
}

window.onload = function () {
  mountSuggestions();
};