Feat/lesson 25 hw toby evans

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/factory/LibraryDbDataLoader.java.bak

@@ -0,0 +1,26 @@
+package com.codedifferently.lesson25.factory;
+
+import com.codedifferently.lesson25.models.LibraryDataModel;
+import com.codedifferently.lesson25.repository.LibraryGuestRepository;
+import com.codedifferently.lesson25.repository.MediaItemRepository;
+import java.io.IOException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+/** A data loader that loads library data from a database. */
+@Service
+public final class LibraryDbDataLoader implements LibraryDataLoader {
+
+  @Autowired private MediaItemRepository mediaItemsRepository;
+  @Autowired private LibraryGuestRepository libraryGuestRepository;
+
+  @Override
+  public LibraryDataModel loadData() throws IOException {
+    var model = new LibraryDataModel();
+
+    model.mediaItems = mediaItemsRepository.findAll();
+    model.guests = libraryGuestRepository.findAll();
+
+    return model;
+  }
+}

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryDataModel.java

@@ -59,4 +59,7 @@ public Map<String, List<CheckoutModel>> getCheckoutsByEmail() {
     }
     return results;
   }
+    private java.util.List<com.codedifferently.lesson25.models.LibraryUserModel> users = new java.util.ArrayList<>();
+    public java.util.List<com.codedifferently.lesson25.models.LibraryUserModel> getUsers() { return users; }
+    public void setUsers(java.util.List<com.codedifferently.lesson25.models.LibraryUserModel> users) { this.users = users; }
 }

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryUserModel.java

@@ -0,0 +1,28 @@
+package com.codedifferently.lesson25.models;
+
+public class LibraryUserModel {
+    private final String id;
+    private final String email;
+    private final String firstName;
+    private final String lastName;
+    private final String password;
+
+    public LibraryUserModel(String id, String email, String firstName, String lastName, String password) {
+        this.id = id;
+        this.email = email;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.password = password;
+    }
+
+    public String getId() { return id; }
+    public String getEmail() { return email; }
+    public String getFirstName() { return firstName; }
+    public String getLastName() { return lastName; }
+    public String getPassword() { return password; }
+
+    @Override
+    public String toString() {
+        return firstName + " " + lastName + " <" + email + ">";
+    }
+}

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/repository/LibraryUserRepository.java

@@ -0,0 +1,33 @@
+package com.codedifferently.lesson25.repository;
+
+import com.codedifferently.lesson25.models.LibraryUserModel;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
+
+public class LibraryUserRepository {
+    private final Connection connection;
+
+    public LibraryUserRepository(Connection connection) {
+        this.connection = connection;
+    }
+
+    public List<LibraryUserModel> findAll() throws Exception {
+        List<LibraryUserModel> users = new ArrayList<>();
+        String sql = "SELECT id, email, first_name, last_name, password FROM library_users";
+        try (Statement st = connection.createStatement(); ResultSet rs = st.executeQuery(sql)) {
+            while (rs.next()) {
+                users.add(new LibraryUserModel(
+                    rs.getString("id"),
+                    rs.getString("email"),
+                    rs.getString("first_name"),
+                    rs.getString("last_name"),
+                    rs.getString("password")
+                ));
+            }
+        }
+        return users;
+    }
+}

lesson_25/db/db_app/src/main/resources/queries/lesson25_toby_evans.sql

@@ -0,0 +1,7 @@
+SELECT type, COUNT(*) AS total_count FROM media_items GROUP BY type;
+
+SELECT SUM(pages) AS total_pages_checked_out FROM checked_out_items;
+
+SELECT g.id AS guest_id, g.first_name, g.last_name, c.item_id, c.checked_out_date, c.return_date
+FROM guests g
+LEFT JOIN checked_out_items c ON g.id = c.guest_id;