Add movieMax constraint check on date selection

src/main/java/DB/Competition.java

@@ -4,6 +4,7 @@ import Exceptions.AlreadyOnTable;
 import Exceptions.NotFoundInTable;
 import lombok.Getter;
 
+import java.sql.Date;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -154,6 +155,21 @@ public class Competition extends Table {
         return list;
     }
 
+    public ArrayList<Movie> getTableMovies(Date date) {
+        ArrayList<Movie> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT M.name FROM Movie M INNER JOIN Projection P on M.name = P.MovieName WHERE M.CompetitionName = ? AND P.startDate = ? GROUP BY M.name");
+            ps.setString(1, name);
+            ps.setDate(2, date);
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Movie(rs.getString("name")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
+
     public boolean addRoom(Room room) {
         return DB.relationSet("CompetitionRoom", "CompetitionName", this.name, "RoomName", room.getName());
     }

src/main/java/DB/Movie.java

@@ -4,10 +4,8 @@ import Exceptions.AlreadyOnTable;
 import Exceptions.NotFoundInTable;
 import lombok.Getter;
 
-import java.sql.PreparedStatement;
+import java.sql.*;
-import java.sql.ResultSet;
+import java.time.LocalDate;
-import java.sql.SQLException;
-import java.sql.Time;
 import java.util.ArrayList;
 import java.util.Map;
 
@@ -94,6 +92,13 @@ public class Movie extends Table {
         return list;
     }
 
+    public boolean validateDate(LocalDate date) {
+        Competition competition = getCompetition();
+        int moviesMax = competition.getMovieMax();
+        ArrayList<Movie> movies = competition.getTableMovies(Date.valueOf(date));
+        return moviesMax <= 0 || movies.stream().filter(m -> m.equals(this)).toArray().length != 0 || movies.size() < moviesMax;
+    }
+
     @Override
     public boolean delete() {
         return false;

src/main/java/DB/Table.java

@@ -4,6 +4,7 @@ import Exceptions.AlreadyOnTable;
 import Exceptions.NotFoundInTable;
 
 import java.util.Map;
+import java.util.Objects;
 
 public abstract class Table {
     final protected String tableName;
@@ -51,4 +52,17 @@ public abstract class Table {
     public String toString() {
         return checkValue;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Table table = (Table) o;
+        return tableName.equals(table.tableName) && checkValue.equals(table.checkValue);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(tableName, checkValue);
+    }
 }

src/main/java/GUI/ProjectionHandler.java

@@ -18,6 +18,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Set;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 public class ProjectionHandler extends JDialog {
     private JPanel contentPane;
@@ -52,9 +53,11 @@ public class ProjectionHandler extends JDialog {
         if (agenda.getDate() != null || agenda.getSlot() != null) {
             updateMovies();
             updateDates();
-            dayComboBox.getModel().setSelectedItem(agenda.getDate());
+            if (IntStream.range(0, dayComboBox.getItemCount()).mapToObj(d -> dayComboBox.getItemAt(d)).filter(d -> d.equals(agenda.getDate())).toArray().length == 1)
+                dayComboBox.getModel().setSelectedItem(agenda.getDate());
             updateSlots();
-            slotComboBox.getModel().setSelectedItem(agenda.getSlot());
+            if (IntStream.range(0, slotComboBox.getItemCount()).mapToObj(s -> slotComboBox.getItemAt(s)).filter(s -> s.equals(agenda.getSlot())).toArray().length == 1)
+                slotComboBox.getModel().setSelectedItem(agenda.getSlot());
             updateRooms();
         }
     }
@@ -136,13 +139,15 @@ public class ProjectionHandler extends JDialog {
         slotComboBox.removeAllItems();
         roomComboBox.removeAllItems();
         Competition competition = (Competition) competitionComboBox.getSelectedItem();
+        Movie movie = (Movie) filmComboBox.getSelectedItem();
         Set<Date> dates = competition.getProjections().stream().map(p -> p.getStartDate()).collect(Collectors.toSet());
         LocalDate[] localDates = Config.getStartDate().datesUntil(Config.getEndDate()).toArray(LocalDate[]::new);
         if (competition.getDays() != 0 && dates.size() >= competition.getDays() && !(projectionType == ProjectionType.EDIT && projection.getCompetition().getName().equals(competition.getName())))
             localDates = dates.stream().map(Date::toLocalDate).toArray(LocalDate[]::new);
 
         for (LocalDate date : localDates)
-            dayComboBox.addItem(date);
+            if (movie == null || movie.validateDate(date))
+                dayComboBox.addItem(date);
     }
 
     private void updateSlots() {