Updated IKOrganizationScraper

Added method deleteCSV that deletes the csv if it exists.

Added method to writeToCSV for cleaner generation of csv. Also added exceptions to handle missing data and failure to delete CSV file.

helpmehelpapplication/src/main/java/ntnu/sytemutvikling/team6/models/IKOrganizationScraper.java

@@ -1,5 +1,6 @@
 package ntnu.sytemutvikling.team6.models;
 
+import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.time.Duration;
@@ -83,6 +84,15 @@ public boolean updateData() {
     }
 
     public boolean writeToCSV() throws IOException {
+        if (this.organizationData.isEmpty()) {
+            throw new IllegalArgumentException("There is no data in the " +
+                    "organizationData list. Run .updateData before proceeding.");
+        }
+
+        if (!this.deleteCSV()) {
+            throw new IOException("Failed to delete the CSV file.");
+        }
+
         try (CSVWriter writer = new CSVWriter(new FileWriter(filename))) {
             for (Organization o : this.organizationData) {
                 writer.writeNext(new String[]{
@@ -96,6 +106,17 @@ public boolean writeToCSV() throws IOException {
         return true;
     }
 
+    public boolean deleteCSV() {
+        var file = new File(filename);
+
+        // Returns true if file is deleted (or if file doesn't exist
+        // Returns false if file couldn't be deleted
+        if (file.exists()) {
+            return file.delete();
+        }
+        return true;
+    }
+
     public List<Organization> getData() {
         return Collections.unmodifiableList(this.organizationData);
     }