Clean up JS code
This commit is contained in:
Nikita Karamov
parent
2636bedd37
commit
4b545f4a14
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@ -73,14 +73,14 @@
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></textarea>
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</section>
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<section>
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<datalist id="instances_list"></datalist>
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<datalist id="instanceDatalist"></datalist>
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<label for="instance">Choose your Mastodon instance</label>
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<input
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type="url"
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name="instance"
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id="instance"
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placeholder="https://"
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list="instances_list"
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list="instanceDatalist"
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required
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/>
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</section>
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104
src/main.js
104
src/main.js
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@ -16,6 +16,18 @@
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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const INSTANCE_LIST_URL = "https://api.joinmastodon.org/servers";
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const $instance = document.getElementById("instance");
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const $instanceDatalist = document.getElementById("instanceDatalist");
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const $form = document.getElementById("form");
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/**
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* Adds missing "https://" and ending slash to the URL
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*
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* @param {string} url URL to normalize
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* @return {string} normalized URL
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*/
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function normalizeUrl(url) {
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if (url.indexOf("http://") == -1 && url.indexOf("https://") == -1) {
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url = "https://" + url;
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@ -26,72 +38,68 @@ function normalizeUrl(url) {
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return url;
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}
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const instance = document.getElementById("instance");
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const instances_list = document.getElementById("instances_list");
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function onLoadInstancesError() {
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console.error("Couldn't load instance list");
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}
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var prefillInstance = window.localStorage.getItem("mastodon_instance");
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function onLoadInstancesSuccess() {
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if (this.status >= 400) {
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return onLoadInstancesError();
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}
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var paramPairs = window.location.search.substr(1).split("&");
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var paramPairsLength = paramPairs.length;
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for (var i = 0; i < paramPairsLength; i++) {
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var paramPair = paramPairs[i].split("=");
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if (paramPair[0] === "text") {
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document.getElementById("text").value = decodeURIComponent(paramPair[1]);
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} else if (paramPair[0] === "instance") {
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prefillInstance = decodeURIComponent(paramPair[1]);
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const currentInstance = $instance.value;
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const instanceDomains = JSON.parse(this.responseText).map((i) => i.domain);
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if (currentInstance && instanceDomains.indexOf(currentInstance) < 0) {
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instanceDomains.push(currentInstance);
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}
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instanceDomains.sort();
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for (let i = 0; i < instanceDomains.length; i++) {
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const $option = document.createElement("option");
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$option.value = normalizeUrl(instanceDomains[i]);
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$instanceDatalist.appendChild($option);
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}
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}
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function instances_loading_error() {
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console.error("Failed to fetch servers list from joinmastodon.");
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function loadInstances() {
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if ($instanceDatalist.children.length === 0) {
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const request = new XMLHttpRequest();
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request.addEventListener("load", onLoadInstancesSuccess);
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request.addEventListener("error", onLoadInstancesError);
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request.open("GET", INSTANCE_LIST_URL);
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request.send();
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}
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}
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function instances_loaded() {
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if (this.status !== 200) {
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instances_loading_error();
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return;
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}
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const prefillInstance = window.localStorage.getItem("mastodon_instance");
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const servers = JSON.parse(this.responseText);
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const chosen_instance = instance.value;
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const domains = servers.map((obj) => obj.domain);
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if (chosen_instance && domains.indexOf(chosen_instance) === -1) {
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domains.push(chosen_instance);
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}
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domains.sort();
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for (const domain of domains) {
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const opt = document.createElement("option");
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opt.value = normalizeUrl(domain);
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instances_list.appendChild(opt);
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const URLParams = window.location.search.substr(1).split("&");
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for (let i = 0; i < URLParams.length; i++) {
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const URLParamPair = URLParams[i].split("=");
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if (URLParamPair[0] === "text") {
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document.getElementById("text").value = decodeURIComponent(URLParamPair[1]);
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} else if (URLParamPair[0] === "instance") {
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prefillInstance = decodeURIComponent(URLParamPair[1]);
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}
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}
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if (prefillInstance != null) {
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instance.value = normalizeUrl(prefillInstance);
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$instance.value = normalizeUrl(prefillInstance);
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}
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instance.addEventListener("focus", function (e) {
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if (instances_list.children.length === 0) {
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const req = new XMLHttpRequest();
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req.addEventListener("load", instances_loaded);
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req.addEventListener("error", instances_loading_error);
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req.open("GET", "https://api.joinmastodon.org/servers");
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req.send();
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}
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});
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$instance.addEventListener("focus", loadInstances);
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document.getElementById("form").addEventListener("submit", function (e) {
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$form.addEventListener("submit", function (e) {
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e.preventDefault();
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var text = e.target.elements["text"].value;
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var instance = normalizeUrl(e.target.elements["instance"].value);
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var remember = e.target.elements["remember"].checked;
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const text = e.target.elements["text"].value;
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const instanceURL = normalizeUrl(e.target.elements["instance"].value);
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const remember = e.target.elements["remember"].checked;
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if (remember) {
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window.localStorage.setItem("mastodon_instance", instance);
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window.localStorage.setItem("mastodon_instance", instanceURL);
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}
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var shareUrl = instance + "share?text=" + encodeURIComponent(text);
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window.location.href = shareUrl;
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window.location.href = instanceURL + "share?text=" + encodeURIComponent(text);
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});
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