441 lines
12 KiB
JavaScript
441 lines
12 KiB
JavaScript
var pg = require('pg');
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var pgc = require('../../private.js');
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var Info = function(id, finishAction) {
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this.id = id;
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this.ready = {
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cameras: false,
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coins: false,
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arrows: false,
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resets : false,
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previousNext: false,
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hovered: false
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};
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this.results = {};
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this.finishAction = finishAction;
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// Connect to db
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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Info.prototype.execute = function() {
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this.loadCameras();
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this.loadCoins();
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this.loadArrows();
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this.loadResets();
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this.loadPreviousNext();
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this.loadHovered();
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}
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Info.prototype.tryMerge = function() {
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// If not ready, do nothing
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for (var i in this.ready) {
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if (!this.ready[i]) {
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return;
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}
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}
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// Release db connection
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this.release();
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this.release = null;
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this.client = null;
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this.merge();
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this.finishAction(this.finalResult);
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}
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// Merges the results of every SQL requests done by the load... methods
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Info.prototype.merge = function() {
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this.finalResult = [];
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for (;;) {
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// Find next element
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var nextIndex = null;
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for (var i in this.results) {
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// The next element is placed at the index 0 (since the elements
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// gotten from the database are sorted)
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if (this.results[i].length !== 0 &&
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(nextIndex === null || this.results[i][0].time < this.results[nextIndex][0].time)) {
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nextIndex = i;
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}
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}
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// If there is no next element, we're done
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if (nextIndex === null) {
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break;
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}
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// Add the next element in results and shift its table
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this.finalResult.push(this.results[nextIndex].shift());
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}
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}
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Info.prototype.loadCameras = function() {
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var self = this;
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this.client.query(
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"SELECT ((camera).position).x AS px, " +
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"((camera).position).y AS py, " +
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"((camera).position).z AS pz, " +
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"((camera).target).x AS tx, " +
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"((camera).target).y AS ty, " +
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"((camera).target).z AS tz, " +
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"time AS time " +
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"FROM keyboardevent WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err, result) {
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self.results.cameras = [];
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for (var i in result.rows) {
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self.results.cameras.push(
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{
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type: 'camera',
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position : {
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x: result.rows[i].px,
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y: result.rows[i].py,
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z: result.rows[i].pz
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},
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target : {
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x: result.rows[i].tx,
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y: result.rows[i].ty,
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z: result.rows[i].tz
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},
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time: result.rows[i].time
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}
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);
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}
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self.ready.cameras = true;
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self.tryMerge();
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}
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);
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}
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Info.prototype.loadCoins = function() {
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var self = this;
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this.client.query(
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"SELECT coin_id, time FROM coinclicked WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err,result) {
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self.results.coins = [];
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for (var i in result.rows) {
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self.results.coins.push(
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{
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type: 'coin',
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time: result.rows[i].time,
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id: result.rows[i].coin_id
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}
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);
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}
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self.ready.coins = true;
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self.tryMerge();
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}
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);
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}
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Info.prototype.loadArrows = function() {
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var self = this;
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this.client.query(
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"SELECT arrow_id, time FROM arrowclicked WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err, result) {
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self.results.arrows = [];
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for (var i in result.rows) {
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self.results.arrows.push(
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{
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type: 'arrow',
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time: result.rows[i].time,
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id: result.rows[i].arrow_id
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}
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);
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}
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self.ready.arrows = true;
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self.tryMerge();
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}
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);
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}
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Info.prototype.loadResets = function() {
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var self = this;
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this.client.query(
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"SELECT time FROM resetclicked WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err, result) {
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self.results.resets = [];
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for (var i in result.rows) {
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self.results.resets.push(
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{
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type: 'reset',
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time: result.rows[i].time
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}
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);
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}
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self.ready.resets = true;
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self.tryMerge();
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}
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);
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}
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Info.prototype.loadPreviousNext = function () {
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var self = this;
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this.client.query(
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"SELECT ((camera).position).x AS px, " +
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"((camera).position).y AS py, " +
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"((camera).position).z AS pz, " +
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"((camera).target).x AS tx, " +
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"((camera).target).y AS ty, " +
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"((camera).target).z AS tz, " +
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"time AS time " +
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"FROM previousnextclicked WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err, result) {
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self.results.previousNext = [];
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for (var i in result.rows) {
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self.results.previousNext.push(
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{
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type: 'previousnext',
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time: result.rows[i].time,
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previous: result.rows[i].previousnext == 'p',
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position : {
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x: result.rows[i].px,
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y: result.rows[i].py,
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z: result.rows[i].pz
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},
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target : {
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x: result.rows[i].tx,
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y: result.rows[i].ty,
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z: result.rows[i].tz
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}
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}
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);
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}
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self.ready.previousNext = true;
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self.tryMerge();
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}
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);
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}
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Info.prototype.loadHovered = function() {
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var self = this;
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this.client.query(
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"SELECT start, time, arrow_id FROM hovered WHERE exp_id = $1 ORDER BY time;",
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[self.id],
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function(err, result) {
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self.results.hovered = [];
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for (var i in result.rows) {
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self.results.hovered.push(
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{
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type: "hovered",
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time: result.rows[i].time,
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start: result.rows[i].start,
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id: result.rows[i].arrow_id
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}
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);
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}
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self.ready.hovered = true;
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self.tryMerge();
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}
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);
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}
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var UserCreator = function(finishAction) {
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this.finishAction = finishAction;
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// Connect to db
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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UserCreator.prototype.execute = function() {
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var self = this;
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this.client.query(
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"INSERT INTO users(name) VALUES('anonymous'); SELECT currval('users_id_seq');",
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[],
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function(err, result) {
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self.finalResult = result.rows[0].currval;
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self.finish();
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}
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);
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}
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UserCreator.prototype.finish = function() {
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this.release();
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this.client = null;
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this.release = null;
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this.finishAction(this.finalResult);
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}
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var ExpCreator = function(user_id, scene_id, finishAction) {
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this.finishAction = finishAction;
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this.user_id = user_id;
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this.scene_id = scene_id;
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// Connect to db
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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ExpCreator.prototype.execute = function() {
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var self = this;
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this.client.query(
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"INSERT INTO experiment(user_id, scene_id) VALUES($1,$2);",
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[self.user_id, self.scene_id],
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function(err, result) {
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self.client.query("SELECT MAX(id) AS id FROM experiment;", function(err, result) {
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self.finalResult = result.rows[0].id;
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self.finish();
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});
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}
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);
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}
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ExpCreator.prototype.finish = function() {
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this.release();
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this.client = null;
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this.release = null;
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this.finishAction(this.finalResult);
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}
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var UserIdChecker = function(id, finishAction) {
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this.id = id;
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this.finishAction = finishAction;
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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UserIdChecker.prototype.execute = function() {
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var self = this;
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this.client.query(
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"SELECT count(id) > 0 AS answer FROM users WHERE id = $1;",
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[self.id],
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function(err, result) {
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self.finalResult = result.rows[0].answer;
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self.finish();
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}
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);
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}
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UserIdChecker.prototype.finish = function() {
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this.release();
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this.client = null;
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this.release = null;
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this.finishAction(this.finalResult);
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}
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var ExpIdChecker = function(id, finishAction) {
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this.id = id;
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this.finishAction = finishAction;
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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ExpIdChecker.prototype.execute = function() {
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var self = this;
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this.client.query(
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"SELECT scene_id FROM experiment WHERE id = $1;",
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[self.id],
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function(err, result) {
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if (result === undefined) {
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self.finalResult = null;
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} else {
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self.finalResult = result.rows[0].scene_id;
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}
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self.finish();
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}
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);
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}
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ExpIdChecker.prototype.finish = function() {
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this.release();
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this.client = null;
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this.release = null;
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this.finishAction(this.finalResult);
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}
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var ExpGetter = function(finishAction) {
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this.finishAction = finishAction;
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var self = this;
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pg.connect(pgc.url, function(err, client, release) {
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self.client = client;
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self.release = release;
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self.execute();
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});
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}
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ExpGetter.prototype.execute = function() {
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var self = this;
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this.client.query(
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"SELECT " +
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"experiment.id as exp_id, " +
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"users.name as username, " +
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"scene.name as scenename, " +
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"users.id as user_id " +
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"FROM experiment, users, scene " +
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"WHERE experiment.user_id = users.id and scene.id = experiment.scene_id " +
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"ORDER BY experiment.id;",
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[],
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function(err, result) {
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self.finalResult = result.rows;
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self.finish();
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}
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);
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}
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ExpGetter.prototype.finish = function() {
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this.release();
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this.client = null;
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this.release = null;
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this.finishAction(this.finalResult);
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}
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var tryUser = function(id, callback) {
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if (id !== undefined && id !== null) {
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new UserIdChecker(id, function(clear) {
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if (clear) {
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callback(id);
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} else {
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new UserCreator(callback);
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}
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});
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} else {
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new UserCreator(callback);
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}
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}
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module.exports.getInfo = function(id, callback) { new Info(id, callback); };
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module.exports.createUser = function(callback) { new UserCreator(callback); };
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module.exports.createExp = function(id, scene_id, callback) { new ExpCreator(id, scene_id, callback); };
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module.exports.checkUserId = function(id, callback) { new UserIdChecker(id, callback); };
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module.exports.checkExpId = function(id, callback) { new ExpIdChecker(id, callback); };
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module.exports.getAllExps = function(callback) { new ExpGetter(callback); };
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module.exports.tryUser = tryUser;
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