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const getId = (id) => document.getElementById(id);
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function showOverlay(id) {
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const elm = getId(id);
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const overlay = document.createElement("div");
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overlay.classList.add("overlay");
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overlay.setAttribute("name", id);
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overlay.innerHTML = `
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<div onclick="_onOverlayDestroy(this.parentElement);"></div>
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<div>
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<button class="close" onclick="_onOverlayDestroy(this.parentElement.parentElement);">x</button>
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${elm.innerHTML}
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</div>
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`;
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document.body.appendChild(overlay);
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}
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function _onOverlayDestroy(elm) {
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const ori_elm = getId(elm.getAttribute("name"));
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if (ori_elm) {
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const cb = ori_elm.getAttribute("onclose");
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if (typeof(cb) == "string") {
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try { eval(cb); } catch(err) { console.error(err); }
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}
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}
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elm.remove();
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}
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function hideOverlay(id) {
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const elms = document.getElementsByName(id);
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for (var i of elms) _onOverlayDestroy(i);
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}
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function _main_events() {
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const header_bar_1 = document.querySelector(".header_bar_1");
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if (header_bar_1 != null) {
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let isFloating = false;
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window.addEventListener("load", function () {
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if (window.pageYOffset > 0) {
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header_bar_1.style.animationDuration = "0s";
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header_bar_1.classList.add("header_bar_1_undocked");
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isFloating = true;
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}
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});
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window.addEventListener("scroll", function() {
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if (window.pageYOffset > 0 && !isFloating) {
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header_bar_1.style.animationDuration = "0.5s";
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header_bar_1.classList.remove("header_bar_1_docked");
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header_bar_1.classList.add("header_bar_1_undocked");
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isFloating = true;
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} else if (window.pageYOffset === 0 && isFloating) {
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header_bar_1.style.animationDuration = "0.5s";
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header_bar_1.classList.remove("header_bar_1_undocked");
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header_bar_1.classList.add("header_bar_1_docked");
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isFloating = false;
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}
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});
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}
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}
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_main_events();
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/* ----------- couch db ----------- */
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//http://127.0.0.1:5984/_utils/#_config/couchdb@127.0.0.1
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class CouchDB {
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static _default_url = "http://127.0.0.1:5984/";
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constructor() {
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this._does_auth_exists_err();
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this.request = new XMLHttpRequest();
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this.db_name = couchdb_name;
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this.is_online = 2;
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}
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//private methods
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_does_auth_exists() {
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return (
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typeof(couchdb_username) == "string" &&
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typeof(couchdb_password) == "string" &&
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typeof(couchdb_name) == "string"
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);
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}
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_does_auth_exists_err() {
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if (!this._does_auth_exists()) throw 'Keine Auth vorhanden. Digga, mach mal <script src="./auth.js"></script>';
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}
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_is_error_missing_database(errReason) {
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return errReason === "no_db_file" || errReason === "Database does not exist.";
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}
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_is_error_missing_data(errReason) {
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return errReason === "missing";
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}
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async _ping() {
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try {
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const response = await fetch(CouchDB._default_url, {
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method: "GET"
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});
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return response.ok;
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} catch(err) {
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return false;
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}
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}
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_send_db_request(method, url, body = null, errorHandling = true) {
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return new Promise(async (resolve, reject) => {
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if (this.is_online == 2) {
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await this.checkOnlineStatus();
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}
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if (this.is_online != 1) {
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reject("CouchDB is not online!");
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return;
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}
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const dburl = CouchDB._default_url + this.db_name + "/" + url;
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const request = this.request;
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this.request.onreadystatechange = () => {
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if (request.readyState != 4) return;
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try {
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if (request.status == 200 || request.status == 201) {
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var response = JSON.parse(request.responseText);
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resolve(response);
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}
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//errors
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else if (request.status == 404) {
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var json = JSON.parse(request.responseText);
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if (this._is_error_missing_data(json.reason)) {
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resolve(null);
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} else if (errorHandling && this._is_error_missing_database(json.reason)) {
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this.createDB().then((value) => {
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this._send_db_request(method, url, body, false).then((value) => {
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resolve(value);
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}).catch((err) => {
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reject(err);
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});
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}).catch((err) => {
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reject(err);
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});
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} else {
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reject(`Database not found: ${request.status} (Reason: ${reason.json})`);
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}
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} else {
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reject(`Unexpected status: ${request.status} (Response: ${
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request.responseText
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})`);
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}
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} catch(err) {
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reject("Unexpected error: " + err);
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}
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};
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this.request.open(method, dburl, true);
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this.request.setRequestHeader("Authorization", "Basic " + btoa(
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couchdb_username + ":" + couchdb_password
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));
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this.request.setRequestHeader("Content-type", "application/json");
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this.request.send(body);
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});
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}
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async _get_db_data(id) {
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return await this._send_db_request("GET", id);
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}
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//public methods
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async checkOnlineStatus() {
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const res = await this._ping();
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if (res === true) {
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this.is_online = 1;
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} else {
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this.is_online = 0;
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}
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return res;
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}
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async createDB() {
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await this._send_db_request("PUT", "", null, false);
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}
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async get(id) {
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const res = await this._get_db_data(id);
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delete res["_id"];
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delete res["_rev"];
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return res;
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}
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async set(id, content, replace = true) {
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try {
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if (typeof (content) != "object") throw "basic.js - CouchDB->set: content is not from type object (type = " + typeof(content) + ")";
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let existingDoc;
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try {
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existingDoc = await this._get_db_data(id);
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} catch (err) {
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existingDoc = null;
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}
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if (existingDoc) {
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if (replace) {
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content = {
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...content,
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_id: existingDoc._id,
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_rev: existingDoc._rev
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};
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} else {
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content = {
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...existingDoc,
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...content,
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_rev: existingDoc._rev
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};
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}
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}
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const res = await this._send_db_request("PUT", id, JSON.stringify(content));
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return {
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"type": "success",
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"message": res
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};
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} catch(err) {
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console.error(err);
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return {
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"type": "error",
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"message": err
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};
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}
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}
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}
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