Added a GET request with filters.

Path is "/todos/filter". You have to pass as a body the arguments "name"
for searching inside the to do's name, "priority" for specifying a
priority level (or "All") and/or "done" for specifying if the to do is
"Done" or "Undone" (or "All").

1 files changed, 37 insertions, 0 deletions

diff --git a/src/main/java/com/encora/ToDosRepository.java b/src/main/java/com/encora/ToDosRepository.java
index e7e939e..ff9d9a6 100644
--- a/src/main/java/com/encora/ToDosRepository.java
+++ b/src/main/java/com/encora/ToDosRepository.java
@@ -13,6 +13,7 @@ import org.springframework.data.repository.query.FluentQuery;
 
 import java.util.*;
 import java.util.function.Function;
+import java.util.stream.Collectors;
 
 public class ToDosRepository implements JpaRepository<ToDos, Integer> {
     Integer lastId;
@@ -107,6 +108,42 @@ public class ToDosRepository implements JpaRepository<ToDos, Integer> {
         }
     }
 
+    // Get to dos list filtered.
+    public List<ToDos> findAllWithFilter(String name, String priority, String done) throws Exception {
+        List<ToDos> filtered = new ArrayList<>(this.todos);
+
+        if (name != null && !name.equals("")) {
+            filtered = filtered.stream()
+                    .filter(todo -> todo.getText().contains(name))
+                    .collect(Collectors.toList());
+        }
+        if (priority != null && !priority.equalsIgnoreCase("all")) {
+            filtered = filtered.stream()
+                    .filter(todo -> Objects.equals(String.valueOf(todo.getPriority()), priority))
+                    .collect(Collectors.toList());
+        }
+        if (done != null && !done.equalsIgnoreCase("all")) {
+            switch (done) {
+                case "Done":
+                    filtered = filtered.stream()
+                            .filter(ToDos::isDone)
+                            .collect(Collectors.toList());
+                    break;
+
+                case "Undone":
+                    filtered = filtered.stream()
+                            .filter(todo -> !todo.isDone())
+                            .collect(Collectors.toList());
+                    break;
+
+                default:
+                    throw new Exception("Filtering not supported on 'done'.");
+            }
+        }
+
+        return filtered;
+    }
+
     private Comparator<ToDos> getToDoComparator(Sort sort) throws Exception {
         // Personal function. Creates a `Comparator` based on the `sort`
         // parameter. This is for us to successfully sort our List without the