71 lines
3.3 KiB
JavaScript
71 lines
3.3 KiB
JavaScript
//This file is only for saving the whiteboard. (Not to a file, only to RAM atm. Whiteboard is gone after server restart)
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var savedBoards = {};
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var savedUndos = {};
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module.exports = {
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handleEventsAndData: function (content) {
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var tool = content["t"]; //Tool witch is used
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var wid = content["wid"]; //whiteboard ID
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var username = content["username"];
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if (tool === "clear") { //Clear the whiteboard
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delete savedBoards[wid];
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delete savedUndos[wid];
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} else if (tool === "undo") { //Undo an action
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if (!savedUndos[wid]) {
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savedUndos[wid] = [];
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}
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if (savedBoards[wid]) {
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for (var i = savedBoards[wid].length - 1; i >= 0; i--) {
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if (savedBoards[wid][i]["username"] == username) {
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var drawId = savedBoards[wid][i]["drawId"];
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for (var i = savedBoards[wid].length - 1; i >= 0; i--) {
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if (savedBoards[wid][i]["drawId"] == drawId && savedBoards[wid][i]["username"] == username) {
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savedUndos[wid].push(savedBoards[wid][i]);
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savedBoards[wid].splice(i, 1);
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}
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}
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break;
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}
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}
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if(savedUndos[wid].length > 1000) {
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savedUndos[wid].splice(0, savedUndos[wid].length - 1000);
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}
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}
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} else if (tool === "redo") {
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if (!savedUndos[wid]) {
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savedUndos[wid] = [];
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}
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if (!savedBoards[wid]) {
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savedBoards[wid] = [];
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}
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for (var i = savedUndos[wid].length - 1; i >= 0; i--) {
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if (savedUndos[wid][i]["username"] == username) {
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var drawId = savedUndos[wid][i]["drawId"];
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for (var i = savedUndos[wid].length - 1; i >= 0; i--) {
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if (savedUndos[wid][i]["drawId"] == drawId && savedUndos[wid][i]["username"] == username) {
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savedBoards[wid].push(savedUndos[wid][i]);
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savedUndos[wid].splice(i, 1);
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}
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}
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break;
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}
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}
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} else if (["line", "pen", "rect", "circle", "eraser", "addImgBG", "recSelect", "eraseRec", "addTextBox", "setTextboxText", "removeTextbox", "setTextboxPosition", "setTextboxFontSize", "setTextboxFontColor"].includes(tool)) { //Save all this actions
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if (!savedBoards[wid]) {
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savedBoards[wid] = [];
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}
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delete content["wid"]; //Delete id from content so we don't store it twice
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if (tool === "setTextboxText") {
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for (var i = savedBoards[wid].length - 1; i >= 0; i--) { //Remove old textbox tex -> dont store it twice
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if (savedBoards[wid][i]["t"] === "setTextboxText" && savedBoards[wid][i]["d"][0] === content["d"][0]) {
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savedBoards[wid].splice(i, 1);
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}
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}
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}
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savedBoards[wid].push(content);
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}
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},
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loadStoredData: function (wid) { //Load saved whiteboard
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return savedBoards[wid] ? savedBoards[wid] : [];
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}
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} |