derpi_only_show_upvotes

25/06/2023 Replaces images' score with only upvotes, instead of the usual combined upvotes+downvotes. Also hides downvotes. Fetches the scores via API calls to https://derpibooru.org/api/v1/json/search/images?filter_id=56027&q=id:IMAGEID1 || id:IMAGEID2 max 15 per query

Version vom 25.06.2023. Aktuellste Version

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// ==UserScript==
// @name       derpi_only_show_upvotes
// @namespace   Violentmonkey Scripts
// @match       https://derpibooru.org/*
// @grant       none
// @version     1.2
// @license     MIT
// @author      Saphkey
// @description 25/06/2023 Replaces images' score with only upvotes, instead of the usual combined upvotes+downvotes. Also hides downvotes. Fetches the scores via API calls to https://derpibooru.org/api/v1/json/search/images?filter_id=56027&q=id:IMAGEID1 || id:IMAGEID2   max 15 per query
// ==/UserScript==


(function() {
	function gatherImageIds() {
		let images = document.getElementsByClassName('score');
		let imageIds = [];
		for (let i = 0; i < images.length; i++) {
			imageIds.push(images[i].getAttribute('data-image-id'));
		}
		return imageIds;
	}

	function hideScores(){
		let scoreEls = document.getElementsByClassName('score');
		for (let i = 0; i < scoreEls.length; i++) {
			scoreEls[i].innerHTML = '?';
		}
	}

	function hideDownvotes() {
		let downvoteEls = document.getElementsByClassName('downvotes');
		for (let i = 0; i < downvoteEls.length; i++) {
			downvoteEls[i].innerHTML = '?';
		}
	}

	async function getUpvotesAndCallDisplaySingleUpvote(imageIds, maxImagesPerReq) {

		function prepareRequestUrls(imagedIds) {
			let requestUrlBase = `https://derpibooru.org/api/v1/json/search/images?filter_id=56027&q=id:${imagedIds[0]}`;
			let requestUrlsArray = [];

			let tempUrl = requestUrlBase;
			for (let i=1; i < imagedIds.length; i++) {
				tempUrl += ` || id:${imagedIds[i]}`;

				if (i / maxImagesPerReq === 1) {
					requestUrlsArray.push(tempUrl);
					tempUrl = requestUrlBase;
				}
			}

			if (tempUrl.length > 0) {
				requestUrlsArray.push(tempUrl);
			}
			return requestUrlsArray;
		}

		async function processRequest(res) {try{
			res = await res.json();
			res.images.forEach((image,i)=>{
				console.log(`imageID: ${image.id} upvotes: ${image.upvotes}`)
				displaySingleUpvote(image.upvotes, image.id);
			});
		}catch(err){
			console.log(err);
		}}

		let requestUrlsArray = prepareRequestUrls(imageIds);
		for (let i = 0; i < requestUrlsArray.length; i++) {
			await fetch(requestUrlsArray[i]).then((response) => {
				processRequest(response);
			})
		}
	}

	//displayAllUpvotes is unused
	function displayAllUpvotes(upvotesObj) {
		let scoreEls = document.getElementsByClassName('score');

		for (let i = 0; i < scoreEls.length; i++) {
			let scoreEl = scoreEls[i];
			let imageId = scoreEl.getAttribute('data-image-id');
			let upvotes = upvotesObj[imageId];
			if (upvotes !== undefined) {
				scoreEl.innerText = upvotes;
			}
			else {
				scoreEl.innerText = '?';
			}
		}
	}


	function displaySingleUpvote(upvotes, imageId) {
		let scoreEls = document.getElementsByClassName('score');

		for (let i = 0; i < scoreEls.length; i++) {
			let scoreEl = scoreEls.item(i);

			if (scoreEl.getAttribute(`data-image-id`) == imageId){
				scoreEl.innerHTML = upvotes;
			}
		}
	}


	window.onload = async function() {
		hideScores();
		hideDownvotes();

		let imageIds = gatherImageIds();
		await getUpvotesAndCallDisplaySingleUpvote(imageIds, 15);
	}
})();