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196 lines
6.6 KiB
196 lines
6.6 KiB
// variable to en-/disable debug
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// set to 1 to enable debug log
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if (DEBUG === undefined) {
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var DEBUG = 1;
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}
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// wrap all in anonymous function to get out of global scope
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(function() {
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//variable definitions
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var serverUrl = gcf.getCgiBinPath(), // the url of the cgi-bin folder with the scripts we call with the ajaxCall() function
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input = document.getElementById("input"),
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target = document.getElementById("output"), // get the html area where we print out the data
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searchForm = document.getElementById("search-form"), // get the search form
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lastHst,
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haltestelle; // object with methods to get and process the data
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// debug log
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if (DEBUG === 1) {console.log("anonymous function");}
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// haltestelle object
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haltestelle = {
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getAbfahrten : function (event) {
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// debug log
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if (DEBUG === 1) {console.log("getAbfahrten() method");}
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// prevent submit default behaviour
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event.preventDefault();
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// construct ajax url
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var hstName = document.getElementById("q").value,
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hstUrl = encodeURI(serverUrl + "abfahrtsmonitor.py?query=abfahrten.do&ort=dresden&hst=" + hstName);
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lastHst = hstName;
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// get the data from the server with an ajax call
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gcf.ajaxCall(hstUrl, target, haltestelle.processAbfahrten, "text");
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},
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processAbfahrten : function (data) {
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// debug log
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if (DEBUG === 1) {console.log("processAbfahrten() method");}
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if (DEBUG === 1) {console.log("received data: " + data);}
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//variable definitions
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var i,
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y,
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htmlOutput,
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htmlInput,
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entry,
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dataLength;
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// process of response only if it's not empty
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if (data.indexOf("[]") !== -1) { // there was an empty response
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haltestelle.getHaltestellen();
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} else {
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// replace useless chars & split string into array
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data = data.replace(/\(.+?\)/gi, ''); // remove all content in round parentheses
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data = data.replace(/<(.+?)>/gi, '$1'); // remove tag parentheses to prevent code injection
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data = data.slice(3, -3).split("],["); // split at array boundaries to get an array of arrays
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// debug log
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if (DEBUG === 1) {console.log("parsed data: " + data);}
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dataLength = data.length;
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htmlInput = "<label for='q'>Haltestelle</label>";
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htmlInput += "<input type='search' id='q' name='q' required placeholder='Haltestelle eingeben' value='" + lastHst + "'>";
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// generate table header
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htmlOutput = "<table>";
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htmlOutput += "<tr>";
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htmlOutput += "<th>Linie</th>";
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htmlOutput += "<th>Richtung</th>";
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htmlOutput += "<th>Abfahrt</th>";
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htmlOutput += "</tr>";
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// generate table entries
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for (i = 0; i < dataLength; i++) {
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htmlOutput += "<tr>";
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entry = data[i].split(",");
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// debug log
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if (DEBUG === 1) {console.log("part " + i + " of parsed data: " + entry);}
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for (y = 0; y < 3; y++) {
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// debug log
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if (DEBUG === 1) {console.log("part " + y + ": " + entry[y]);}
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htmlOutput += "<td>" + entry[y].slice(1, -1) + "</td>";
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}
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htmlOutput += "</tr>";
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}
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// close table
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htmlOutput += "</table>";
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// print content into web page
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target.innerHTML = htmlOutput;
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input.innerHTML = htmlInput;
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}
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},
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getHaltestellen : function () {
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// debug log
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if (DEBUG === 1) {console.log("getHaltestellen() method");}
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// construct ajax url
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var hstName = document.getElementById("q").value,
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hstUrl = encodeURI(serverUrl + "abfahrtsmonitor.py?query=haltestelle.do&ort=dresden&hst=" + hstName);
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// get the data from the server with an ajax call
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gcf.ajaxCall(hstUrl, target, haltestelle.processHaltestellen, "text");
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},
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processHaltestellen : function (data) {
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// debug log
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if (DEBUG === 1) {console.log("processHaltestellen() method");}
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if (DEBUG === 1) {console.log("received data: " + data);}
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//variable definitions
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var i,
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entry,
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dataLength,
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htmlInput,
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htmlOutput;
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// process of response only if it's not empty
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if (data.indexOf("[]") !== -1) {
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htmlOutput = "<p>unbekannte Haltstelle, bitte erneut versuchen</p>";
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target.innerHTML = htmlOutput;
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} else {
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// replace useless chars & split string into array
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data = data.replace(/\[\[\[.+?\]\],/gi, '['); // remove useless first city entry
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data = data.replace(/\(.+?\)/gi, ''); // remove all content in round parentheses
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data = data.replace(/<(.+?)>/gi, '$1'); // remove tag parentheses to prevent code injection
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data = data.slice(4, -4).split("],["); // split at array boundaries to get an array of arrays
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// debug log
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if (DEBUG === 1) {console.log("parsed data: " + data);}
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dataLength = data.length;
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// generate table header
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htmlInput = "<label for='q'>Haltestelle</label>";
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htmlInput += "<select id='q' name='q' required>";
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// generate table entries
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for (i = 0; i < dataLength; i++) {
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entry = data[i].split(",");
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// debug log
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if (DEBUG === 1) {console.log("part " + i + " of parsed data: " + entry);}
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htmlInput += "<option value='" + (entry[0].slice(1, -1)) + "'>" + (entry[0].slice(1, -1)) + "</option>";
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}
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// close table
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htmlInput += "</select>";
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input.innerHTML = htmlInput;
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}
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}
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};
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//event listeners
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searchForm.addEventListener("submit", haltestelle.getAbfahrten, false);
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}()); // end of anonymous function
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