+ add upload date to file selection

+ select latest file if no selection is provided

#SPM-28: add work 1h 20m development

.gitignore

@@ -3,3 +3,4 @@
 .project
 target
 .vscode
+*.csv

src/main/java/de/hsel/spm/baudas/web/Data.java

@@ -9,6 +9,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.time.LocalDateTime;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
@@ -36,7 +37,7 @@ public class Data {
         //cleanup old files
         if (files.isEmpty()) {
             try {
-                Files.list(Paths.get("target/")).forEach(path -> {
+                Files.list(Paths.get("")).forEach(path -> {
                     if (path.toFile().getName().endsWith(".csv")) {
                         try {
                             Files.delete(path);
@@ -60,11 +61,11 @@ public class Data {
                 System.out.println("failed to delete file...");
             }
             path = Paths.get(getFileName(uuid));
-            files.offer(new SavedFile(uuid, name));
+            files.offer(new SavedFile(uuid, name, LocalDateTime.now()));
 
 
         } else {
-            files.add(new SavedFile(uuid, name));
+            files.add(new SavedFile(uuid, name, LocalDateTime.now()));
             path = Paths.get(getFileName(uuid));
         }
         return path;
@@ -91,6 +92,6 @@ public class Data {
     @Contract(pure = true)
     @NotNull
     private static String getFileName(@NotNull UUID uuid) {
-        return "target/" + uuid + ".csv";
+        return uuid + ".csv";
     }
 }

src/main/java/de/hsel/spm/baudas/web/SavedFile.java

@@ -4,6 +4,7 @@ import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.ToString;
 
+import java.time.LocalDateTime;
 import java.util.UUID;
 
 /**
@@ -20,4 +21,5 @@ class SavedFile {
 
     private UUID uuid;
     private String name;
+    private LocalDateTime date;
 }

src/main/java/de/hsel/spm/baudas/web/ShoppingTimesDiagram.java

@@ -13,7 +13,16 @@ import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.nio.charset.StandardCharsets;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.UUID;
 
 /**
  * changes data from shopping times diagram into a readable format for chart.js

src/main/java/de/hsel/spm/baudas/web/WeekOverviewDiagram.java

@@ -12,7 +12,13 @@ import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.nio.charset.StandardCharsets;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
 
 /**
  * changes data from week overview into readable format for chart.js

src/main/webapp/js/cache.js

@@ -5,22 +5,33 @@ $(document).ready(function () {
         for (const result of results) {
             dataset.append($("<option></option>")
                 .attr("value", result.uuid)
-                .text(result.name));
+                .text(result.name + " (" + result.date.date.day + "." + result.date.date.month + " "
+                    + result.date.time.hour + ":" + result.date.time.minute + ")"));
         }
         dataset.formSelect();
     });
-    updateWeekOverviewChart();
-    updateShoppingTimesChart();
+    updateCache();
 });
 
 /**
  * update all charts with correct values for dataset
  */
 function updateCache() {
+    let dataset = $('#dataset');
     let selected = $('#dataset :selected');
-    if (selected.index() !== -1) {
+    if (typeof selected !== 'undefined' && selected.index() !== -1) {
         updateWeekOverviewChart(selected.val());
         updateShoppingTimesChart(selected.val());
+    } else {
+        //requesting files, getting values from html does not work...
+        //if no selection is provided, select newest file
+        request('files').then(results => {
+            let uuid = results[results.length - 1].uuid;
+            dataset.val(uuid);
+            updateWeekOverviewChart(uuid);
+            updateShoppingTimesChart(uuid);
+            dataset.formSelect();
+        });
     }
 
 }
@@ -32,7 +43,7 @@ function updateCache() {
  * @returns {Promise<result>}
  */
 function request(url, id) {
-    return new Promise(((resolve, reject) => {
+    return new Promise(((resolve) => {
         if (typeof id !== 'undefined') {
             requestInternal(url + '?id=' + id).then(function (data) {
                 resolve(data);
@@ -51,7 +62,7 @@ function request(url, id) {
  * @returns {Promise<result>}
  */
 function requestInternal(url) {
-    return new Promise(((resolve, reject) => {
+    return new Promise(((resolve) => {
         $.ajax({
             url: url,
             dataType: 'json'