Added beginning of new view framework, and first three views for new workflow.

Also added design for new workflow, and made many changes to existing Github Manager.

src/main/java/nl/andrewlalis/Main.java

@@ -1,14 +1,12 @@
 package nl.andrewlalis;
 
-import nl.andrewlalis.model.Student;
-import nl.andrewlalis.model.database.DbUtil;
-import nl.andrewlalis.ui.control.command.CommandExecutor;
-import nl.andrewlalis.ui.control.command.executables.*;
+import nl.andrewlalis.command.CommandExecutor;
+import nl.andrewlalis.command.executables.*;
+import nl.andrewlalis.git_api.GithubManager;
 import nl.andrewlalis.ui.view.InitializerApp;
+import nl.andrewlalis.ui.view.StartView;
 import nl.andrewlalis.util.CommandLine;
 import nl.andrewlalis.util.Logging;
-import org.hibernate.Session;
-import org.hibernate.SessionFactory;
 
 import java.util.Map;
 import java.util.logging.Logger;
@@ -51,12 +49,15 @@ public class Main {
                 "© Andrew Lalis (2018), All rights reserved.\n" +
                 "Program initialized.");
 
-        SessionFactory factory = DbUtil.getSessionFactory();
-        Session session = factory.openSession();
-        session.beginTransaction();
-        System.out.println(session.save(new Student(1, "a", "a@e.com", "git", null)));
-        session.getTransaction().commit();
-        session.close();
+        GithubManager manager = new GithubManager();
+        StartView startView = new StartView(manager);
+
+//        SessionFactory factory = DbUtil.getSessionFactory();
+//        Session session = factory.openSession();
+//        session.beginTransaction();
+//        System.out.println(session.save(new Student(1, "a", "a@e.com", "git", null)));
+//        session.getTransaction().commit();
+//        session.close();
     }
 
 }

src/main/java/nl/andrewlalis/command/CommandExecutor.java

@@ -1,6 +1,6 @@
-package nl.andrewlalis.ui.control.command;
+package nl.andrewlalis.command;
 
-import nl.andrewlalis.ui.control.command.executables.ExecutableContext;
+import nl.andrewlalis.command.executables.ExecutableContext;
 
 import java.util.*;
 import java.util.logging.Logger;

src/main/java/nl/andrewlalis/command/Executable.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command;
+package nl.andrewlalis.command;
 
 /**
  * Classes which implement this interface tell that they may be 'executed', either via command-line, or through the use

src/main/java/nl/andrewlalis/command/executables/ArchiveRepos.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 

src/main/java/nl/andrewlalis/command/executables/DefineTaTeams.java

@@ -1,8 +1,8 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
-import nl.andrewlalis.ui.view.dialogs.DefineTaTeamsDialog;
 import nl.andrewlalis.ui.view.InitializerApp;
+import nl.andrewlalis.ui.view.dialogs.DefineTaTeamsDialog;
 
 /**
  * This executable is slightly different from the others, in that it opens up a user interface to make editing TA teams

src/main/java/nl/andrewlalis/command/executables/DelegateStudentTeams.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 import nl.andrewlalis.model.StudentTeam;

src/main/java/nl/andrewlalis/command/executables/DeleteRepos.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 

src/main/java/nl/andrewlalis/command/executables/ExecutableContext.java

@@ -1,6 +1,6 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
-import nl.andrewlalis.ui.control.command.Executable;
+import nl.andrewlalis.command.Executable;
 
 /**
  * An object to record a specific executable's execution context (args given), with the ability to re-run the executable

src/main/java/nl/andrewlalis/command/executables/GenerateAssignmentsRepo.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 

src/main/java/nl/andrewlalis/command/executables/GithubExecutable.java

@@ -1,7 +1,7 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
+import nl.andrewlalis.command.Executable;
 import nl.andrewlalis.git_api.GithubManager;
-import nl.andrewlalis.ui.control.command.Executable;
 
 /**
  * Represents an executable which interacts with github, and therefore needs access to a Github

src/main/java/nl/andrewlalis/command/executables/ListErrors.java

@@ -1,7 +1,7 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
+import nl.andrewlalis.command.Executable;
 import nl.andrewlalis.model.error.Error;
-import nl.andrewlalis.ui.control.command.Executable;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import java.util.logging.Logger;

src/main/java/nl/andrewlalis/command/executables/ListRepos.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 import org.kohsuke.github.GHRepository;

src/main/java/nl/andrewlalis/command/executables/ReadStudentsFile.java

@@ -1,7 +1,7 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
+import nl.andrewlalis.command.Executable;
 import nl.andrewlalis.model.StudentTeam;
-import nl.andrewlalis.ui.control.command.Executable;
 import nl.andrewlalis.ui.view.InitializerApp;
 import nl.andrewlalis.util.FileUtils;
 

src/main/java/nl/andrewlalis/command/executables/SetupStudentRepos.java

@@ -1,4 +1,4 @@
-package nl.andrewlalis.ui.control.command.executables;
+package nl.andrewlalis.command.executables;
 
 import nl.andrewlalis.git_api.GithubManager;
 import nl.andrewlalis.model.StudentTeam;

src/main/java/nl/andrewlalis/git_api/GithubManager.java

@@ -31,6 +31,7 @@ public class GithubManager {
     private GitHub github;
     private GHOrganization organization;
     private String accessToken;
+    private String organizationName;
 
     /**
      * The logger for outputting debug info.
@@ -40,14 +41,82 @@ public class GithubManager {
         logger.setParent(Logger.getGlobal());
     }
 
+    /**
+     * Creates an empty github manager, which at this point, essentially just allocates the object in memory.
+     */
+    public GithubManager() {
+
+    }
+
     public GithubManager(String organizationName, String accessToken) {
+        this.organizationName = organizationName;
         this.accessToken = accessToken;
+    }
+
+    /**
+     * Gets the organization that this manager manages.
+     * @return The Organization object that this manager was constructed for.
+     * @throws IOException If the organization does not exist or some other error occurs.
+     */
+    private GHOrganization getOrganization() throws IOException {
+        if (this.github == null || this.organization == null) {
+            this.github = GitHub.connectUsingOAuth(this.accessToken);
+            this.organization = this.github.getOrganization(this.organizationName);
+        }
+
+        return this.organization;
+    }
+
+    /**
+     * Determine if the manager is currently connected to github with the current organization name and access token.
+     * @return True if the manager is connected, or false otherwise.
+     */
+    public boolean validate() {
         try {
-            this.github = GitHub.connectUsingOAuth(accessToken);
-            this.organization = this.github.getOrganization(organizationName);
+            this.organization = this.getOrganization();
+            return this.organization != null;
         } catch (IOException e) {
-            logger.severe("Unable to make a GithubManager with organization name: " + organizationName + " and access token: " + accessToken);
-            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public void setOrganizationName(String name) {
+        this.organizationName = name;
+        this.github = null;
+        this.organization = null;
+    }
+
+    public void setAccessToken(String token) {
+        this.accessToken = token;
+        this.github = null;
+        this.organization = null;
+    }
+
+    /**
+     * Determines if a repository exists in the current organization.
+     * @param repoName The name of the repository.
+     * @return True if the repository exists, false otherwise.
+     */
+    public boolean repoExists(String repoName) {
+        try {
+            GHRepository repo = this.getOrganization().getRepository(repoName);
+            return repo != null;
+        } catch (IOException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Determines if a team exists in the current organization.
+     * @param teamName The name of the team.
+     * @return True if the team exists, false otherwise.
+     */
+    public boolean teamExists(String teamName) {
+        try {
+            GHTeam team = this.getOrganization().getTeamByName(teamName);
+            return team != null;
+        } catch (IOException e) {
+            return false;
         }
     }
 
@@ -59,7 +128,7 @@ public class GithubManager {
     public List<GHRepository> listReposWithPrefix(String substring) {
         List<GHRepository> repos = new ArrayList<>();
         try {
-            List<GHRepository> allRepos = this.organization.listRepositories().asList();
+            List<GHRepository> allRepos = this.getOrganization().listRepositories().asList();
             for (GHRepository repo : allRepos) {
                 if (repo.getName().contains(substring)) {
                     repos.add(repo);
@@ -81,7 +150,7 @@ public class GithubManager {
     public GHRepository getRepository(String name) {
         System.out.println(name);
         try {
-            return this.organization.getRepository(name);
+            return this.getOrganization().getRepository(name);
         } catch (IOException e) {
             logger.severe("No repository with name: " + name + " exists.");
             e.printStackTrace();
@@ -97,7 +166,7 @@ public class GithubManager {
         List<TATeam> teams = new ArrayList<>();
         try {
             Random rand = new Random();
-            for (Map.Entry<String, GHTeam> entry : this.organization.getTeams().entrySet()) {
+            for (Map.Entry<String, GHTeam> entry : this.getOrganization().getTeams().entrySet()) {
                 TATeam team = new TATeam(entry.getKey(), entry.getValue().getId());
                 team.setGithubTeam(entry.getValue());
                 for (GHUser user : entry.getValue().listMembers().asList()) {
@@ -119,7 +188,7 @@ public class GithubManager {
     public List<TeachingAssistant> getMembers() {
         List<TeachingAssistant> teachingAssistants = new ArrayList<>();
         try {
-            for (GHUser member : this.organization.listMembers().asList()) {
+            for (GHUser member : this.getOrganization().listMembers().asList()) {
                 teachingAssistants.add(new TeachingAssistant(-1, member.getName(), member.getEmail(), member.getLogin()));
             }
         } catch (IOException e) {
@@ -137,9 +206,9 @@ public class GithubManager {
      * @throws IOException If an HTTP request failed.
      */
     public void setupAssignmentsRepo(String assignmentsRepoName, String description, String allTeachingAssistants) throws IOException {
-        GHTeam team = this.organization.getTeamByName(allTeachingAssistants);
+        GHTeam team = this.getOrganization().getTeamByName(allTeachingAssistants);
         // Check if the repository already exists.
-        GHRepository existingRepo = this.organization.getRepository(assignmentsRepoName);
+        GHRepository existingRepo = this.getOrganization().getRepository(assignmentsRepoName);
         if (existingRepo != null) {
             existingRepo.delete();
             logger.fine("Deleted pre-existing assignments repository.");
@@ -174,9 +243,10 @@ public class GithubManager {
             return;
         }
 
-        GHRepository repo = this.createRepository(team.generateUniqueName(prefix), taTeam.getGithubTeam(), team.generateRepoDescription(), false, true, true);
-
-        if (repo == null) {
+        GHRepository repo;
+        try {
+            repo = this.createRepository(team.generateUniqueName(prefix), taTeam.getGithubTeam(), team.generateRepoDescription(), false, true, true);
+        } catch (IOException e) {
             logger.severe("Repository for student team " + team.getNumber() + " could not be created.");
             return;
         }
@@ -195,17 +265,22 @@ public class GithubManager {
      * @param substring The substring which repository names should contain to be deleted.
      */
     public void deleteAllRepositories(String substring) {
-        List<GHRepository> repositories = this.organization.listRepositories().asList();
-        for (GHRepository repo : repositories) {
-            if (repo.getName().contains(substring)) {
-                try {
-                    repo.delete();
-                    logger.info("Deleted repository: " + repo.getName());
-                } catch (IOException e) {
-                    logger.severe("Could not delete repository: " + repo.getName());
-                    e.printStackTrace();
+        try {
+            List<GHRepository> repositories = this.getOrganization().listRepositories().asList();
+            for (GHRepository repo : repositories) {
+                if (repo.getName().contains(substring)) {
+                    try {
+                        repo.delete();
+                        logger.info("Deleted repository: " + repo.getName());
+                    } catch (IOException e) {
+                        logger.severe("Could not delete repository: " + repo.getName());
+                        e.printStackTrace();
+                    }
                 }
             }
+        } catch (IOException e) {
+            logger.severe("Could not get Organization for listing repositories.");
+            e.printStackTrace();
         }
     }
 
@@ -214,11 +289,16 @@ public class GithubManager {
      * @param sub Any repository containing this substring will be archived.
      */
     public void archiveAllRepositories(String sub) {
-        List<GHRepository> repositories = this.organization.listRepositories().asList();
-        for (GHRepository repo : repositories) {
-            if (repo.getName().contains(sub)) {
-                archiveRepository(repo);
+        try {
+            List<GHRepository> repositories = this.getOrganization().listRepositories().asList();
+            for (GHRepository repo : repositories) {
+                if (repo.getName().contains(sub)) {
+                    archiveRepository(repo);
+                }
             }
+        } catch (IOException e) {
+            logger.severe("Could not get Organization for listing repositories.");
+            e.printStackTrace();
         }
     }
 
@@ -339,25 +419,20 @@ public class GithubManager {
      * @param hasWiki Whether the repo has a wiki enabled.
      * @param hasIssues Whether the repo has issues enabled.
      * @param isPrivate Whether or not the repository is private.
-     * @return The repository that was created, or null if it could not be created.
+     * @return The repository that was created.
+     * @throws IOException If an exception occurred while sending a request.
      */
-    private GHRepository createRepository(String name, GHTeam taTeam, String description, boolean hasWiki, boolean hasIssues, boolean isPrivate){
-        try {
-            GHCreateRepositoryBuilder builder = this.organization.createRepository(name);
-            builder.team(taTeam);
-            builder.wiki(hasWiki);
-            builder.issues(hasIssues);
-            builder.description(description);
-            builder.gitignoreTemplate("Java");
-            builder.private_(isPrivate);
-            GHRepository repo = builder.create();
-            logger.fine("Created repository: " + repo.getName());
-            return repo;
-        } catch (IOException e) {
-            logger.severe("Could not create repository: " + name);
-            e.printStackTrace();
-            return null;
-        }
+    private GHRepository createRepository(String name, GHTeam taTeam, String description, boolean hasWiki, boolean hasIssues, boolean isPrivate) throws IOException {
+        GHCreateRepositoryBuilder builder = this.getOrganization().createRepository(name);
+        builder.team(taTeam);
+        builder.wiki(hasWiki);
+        builder.issues(hasIssues);
+        builder.description(description);
+        builder.gitignoreTemplate("Java");
+        builder.private_(isPrivate);
+        GHRepository repo = builder.create();
+        logger.fine("Created repository: " + repo.getName());
+        return repo;
     }
 
 }

src/main/java/nl/andrewlalis/model/DatabaseObject.java

@@ -1,9 +0,0 @@
-package nl.andrewlalis.model;
-
-public abstract class DatabaseObject {
-
-    public abstract DatabaseObject retrieve();
-
-    public abstract boolean store();
-
-}

src/main/java/nl/andrewlalis/ui/control/listeners/ArchiveAllListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import javax.swing.*;

src/main/java/nl/andrewlalis/ui/control/listeners/CommandFieldKeyListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 
 import javax.swing.*;
 import java.awt.event.KeyEvent;

src/main/java/nl/andrewlalis/ui/control/listeners/DefineTaTeamsListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import java.awt.event.ActionEvent;

src/main/java/nl/andrewlalis/ui/control/listeners/DelegateStudentTeamsListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import java.awt.event.ActionEvent;

src/main/java/nl/andrewlalis/ui/control/listeners/DeleteReposListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import javax.swing.*;

src/main/java/nl/andrewlalis/ui/control/listeners/ExecutableListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import java.awt.event.ActionListener;

src/main/java/nl/andrewlalis/ui/control/listeners/GenerateAssignmentsRepoListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import javax.swing.*;

src/main/java/nl/andrewlalis/ui/control/listeners/ReadStudentsFileListener.java

@@ -1,6 +1,6 @@
 package nl.andrewlalis.ui.control.listeners;
 
-import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.ui.view.InitializerApp;
 
 import javax.swing.*;

src/main/java/nl/andrewlalis/ui/control/listeners/ViewChangeListener.java

@@ -0,0 +1,68 @@
+package nl.andrewlalis.ui.control.listeners;
+
+import nl.andrewlalis.ui.view.AbstractView;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+/**
+ * The ViewChangeListener is attached to buttons which should change the view to a new view. With this listener, one
+ * needs to simply give the previous view, and the next view, and
+ */
+public class ViewChangeListener implements ActionListener {
+
+    protected AbstractView previousView;
+    protected AbstractView newView;
+
+    public ViewChangeListener(AbstractView previousView, AbstractView newView) {
+        this.previousView = previousView;
+        this.newView = newView;
+        this.newView.addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent windowEvent) {
+                back();
+            }
+        });
+    }
+
+    /**
+     * This method is called just before the view is changed.
+     * @return True if the change should happen, or false if some validation or check prevents the user from moving to
+     * the next view.
+     */
+    protected boolean beforeChange() {
+        // Child classes can implement extra behavior here.
+        return true;
+    }
+
+    /**
+     * Defines some default behavior for switching to a new view.
+     * @param actionEvent The event which triggered this action.
+     */
+    @Override
+    public void actionPerformed(ActionEvent actionEvent) {
+        if (this.beforeChange()) {
+            this.forward();
+        }
+    }
+
+    /**
+     * Goes to the new view, and hides the previous view.
+     */
+    private void forward() {
+        this.previousView.setVisible(false);
+        this.newView.reset();
+        this.newView.setVisible(true);
+    }
+
+    /**
+     * Goes 'back in time', or rather, hides the current view and moves back to the one which sent us here.
+     */
+    private void back() {
+        this.previousView.reset();
+        this.previousView.setVisible(true);
+        this.newView.setVisible(false);
+    }
+}

src/main/java/nl/andrewlalis/ui/control/listeners/create_assignments_view/NextListener.java

@@ -0,0 +1,59 @@
+package nl.andrewlalis.ui.control.listeners.create_assignments_view;
+
+import nl.andrewlalis.git_api.GithubManager;
+import nl.andrewlalis.ui.control.listeners.ViewChangeListener;
+import nl.andrewlalis.ui.view.AbstractView;
+import nl.andrewlalis.ui.view.CreateAssignmentsView;
+
+import javax.swing.*;
+import java.io.IOException;
+
+/**
+ * Listens for when the user clicks 'next' in the CreateAssignmentsView. This listener is responsible for checking that
+ * the user enters a correct repository name, or if not, asks if the user wishes to create the repository with that
+ * name.
+ */
+public class NextListener extends ViewChangeListener {
+
+    public NextListener(AbstractView previousView, AbstractView newView) {
+        super(previousView, newView);
+    }
+
+    /**
+     * Validate that the repository the user has entered exists in the organization.
+     * @return True if the repository exists, or if the user creates a repository with that name, or false if an
+     * Assignments repository was not created.
+     */
+    @Override
+    protected boolean beforeChange() {
+        CreateAssignmentsView assignmentsView = (CreateAssignmentsView) this.previousView;
+        String repoName = assignmentsView.getRepositoryName();
+        GithubManager manager = assignmentsView.getGithubManager();
+        if (manager.repoExists(repoName)) {
+            return true;
+        } else {
+            int reply = JOptionPane.showConfirmDialog(
+                    assignmentsView,
+                    "The repository you gave does not exist.\nWould you like to create it?",
+                    "Create new repository?",
+                    JOptionPane.YES_NO_OPTION);
+            if (reply == JOptionPane.YES_OPTION) {
+                try {
+                    assignmentsView.getGithubManager().setupAssignmentsRepo(repoName, "", this.getTeachingAssistantsTeamName());
+                    return true;
+                } catch (IOException e) {
+                    //e.printStackTrace();
+                    JOptionPane.showMessageDialog(assignmentsView, "Could not create repository:\n" + e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
+                    return false;
+                }
+            } else {
+                return false;
+            }
+        }
+    }
+
+    private String getTeachingAssistantsTeamName() {
+        String name = JOptionPane.showInputDialog(this.previousView, "Please enter (exactly) the name of Github team\nthat contains all teaching assistants.", "Select TA Team", JOptionPane.QUESTION_MESSAGE);
+        return name;
+    }
+}

src/main/java/nl/andrewlalis/ui/control/listeners/start_view/CreateAssignmentsRepoListener.java

@@ -0,0 +1,27 @@
+package nl.andrewlalis.ui.control.listeners.start_view;
+
+import nl.andrewlalis.ui.control.listeners.ViewChangeListener;
+import nl.andrewlalis.ui.view.AbstractView;
+import nl.andrewlalis.ui.view.StartView;
+
+/**
+ * Listener for when the user intends to create repositories for a new course.
+ */
+public class CreateAssignmentsRepoListener extends ViewChangeListener {
+
+    public CreateAssignmentsRepoListener(AbstractView previousView, AbstractView newView) {
+        super(previousView, newView);
+    }
+
+    /**
+     * All that needs to be done here is check that the github manager can work with the given info.
+     * @return True if the github manager accepts the organization name and access token, false otherwise.
+     */
+    @Override
+    protected boolean beforeChange() {
+        StartView startView = (StartView) this.previousView;
+        startView.getGithubManager().setOrganizationName(startView.getOrganizationName());
+        startView.getGithubManager().setAccessToken(startView.getAccessToken());
+        return startView.getGithubManager().validate();
+    }
+}

src/main/java/nl/andrewlalis/ui/view/AbstractView.java

@@ -0,0 +1,72 @@
+package nl.andrewlalis.ui.view;
+
+import nl.andrewlalis.git_api.GithubManager;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * All views in the application will extend from this view, as a means of simplifying and organizing how visual
+ * components are made.
+ */
+public abstract class AbstractView extends JFrame {
+
+    /**
+     * A GithubManager object which can be used to interact with github.
+     */
+    private GithubManager githubManager;
+
+    /**
+     * Initializes the view by packing the content pane as it is defined by any child, and setting some generic swing
+     * values.
+     * @param title The window's title.
+     * @param startVisible Whether or not to start the view as visible.
+     * @param defaultCloseOperation What to do when the user closes the window.
+     * @param preferredSize The preferred size of the view.
+     */
+    AbstractView(String title, boolean startVisible, int defaultCloseOperation, Dimension preferredSize, GithubManager githubManager) {
+        super(title);
+        this.githubManager = githubManager;
+        this.setContentPane(this.buildContentPane());
+        this.setDefaultCloseOperation(defaultCloseOperation);
+        if (preferredSize != null) {
+            this.setSize(preferredSize);
+        }
+        this.setLocationRelativeTo(null);
+        this.pack();
+        this.setVisible(startVisible);
+    }
+
+    /**
+     * Constructs this view. Child classes will define how the content pane is constructed by returning that content
+     * pane here.
+     * @return The content pane containing the view to be rendered.
+     */
+    protected abstract JPanel buildContentPane();
+
+    /**
+     * Resets this view and all form components within it. It is the responsibility of child classes to define how to
+     * reset themselves.
+     */
+    public void reset() {
+        // Child classes can define custom behavior here.
+    }
+
+    public GithubManager getGithubManager() {
+        return githubManager;
+    }
+
+    /**
+     * Generates a text input field panel.
+     * @param labelText The text for the label above the panel.
+     * @param textField A reference to the text field that is used in the panel.
+     * @return A JPanel containing the label and text field.
+     */
+    final JPanel generateTextFieldPanel(String labelText, JTextField textField) {
+        JPanel newPanel = new JPanel(new BorderLayout());
+        newPanel.add(new JLabel(labelText), BorderLayout.NORTH);
+        newPanel.add(textField);
+        newPanel.setBorder(BorderFactory.createEmptyBorder(5, 2, 5, 2));
+        return newPanel;
+    }
+}

src/main/java/nl/andrewlalis/ui/view/CreateAssignmentsView.java

@@ -0,0 +1,45 @@
+package nl.andrewlalis.ui.view;
+
+import nl.andrewlalis.git_api.GithubManager;
+import nl.andrewlalis.ui.control.listeners.create_assignments_view.NextListener;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * In this view, the user will enter the name of an assignments repository to use for the course, or allows the user to
+ * create a new one.
+ *
+ * Once the user is here, it is guaranteed that the github manager has been validated.
+ */
+public class CreateAssignmentsView extends AbstractView {
+
+    private JTextField repositoryNameField;
+
+    public CreateAssignmentsView(GithubManager manager) {
+        super("Create/Set Assignments Repository",
+                false,
+                DISPOSE_ON_CLOSE,
+                null,
+                manager);
+    }
+
+    public String getRepositoryName() {
+        return this.repositoryNameField.getText();
+    }
+
+    @Override
+    protected JPanel buildContentPane() {
+        JPanel contentPane = new JPanel();
+
+        contentPane.setLayout(new BorderLayout());
+        this.repositoryNameField = new JTextField();
+        contentPane.add(this.generateTextFieldPanel("Repository name:", this.repositoryNameField), BorderLayout.CENTER);
+
+        JButton nextButton = new JButton("Next");
+        nextButton.addActionListener(new NextListener(this, new InputStudentsFileView(this.getGithubManager())));
+        contentPane.add(nextButton, BorderLayout.SOUTH);
+
+        return contentPane;
+    }
+}

src/main/java/nl/andrewlalis/ui/view/InitializerApp.java

@@ -1,8 +1,8 @@
 package nl.andrewlalis.ui.view;
 
+import nl.andrewlalis.command.CommandExecutor;
 import nl.andrewlalis.model.Organization;
 import nl.andrewlalis.ui.control.OutputTextHandler;
-import nl.andrewlalis.ui.control.command.CommandExecutor;
 import nl.andrewlalis.ui.control.listeners.*;
 
 import javax.swing.*;
@@ -129,11 +129,6 @@ public class InitializerApp extends JFrame {
         commonActionsPanel.add(this.generateButtonPanel("Delegate Student Teams", new DelegateStudentTeamsListener(this.executor, this)));
         commonActionsPanel.add(this.generateButtonPanel("Generate Assignments Repo", new GenerateAssignmentsRepoListener(this.executor, this)));
 
-        // TODO: Enable this once the define teams dialog is complete.
-//        JButton defineTaTeamsButton = new JButton("Define TA Teams");
-//        defineTaTeamsButton.addActionListener(new DefineTaTeamsListener(this.executor, this));
-//        commonActionsPanel.add(f);
-
         commonActionsPanel.add(this.generateButtonPanel("Delete Repos", new DeleteReposListener(this.executor, this)));
 
         // Extra panel to push buttons to the top.

src/main/java/nl/andrewlalis/ui/view/InputStudentsFileView.java

@@ -0,0 +1,33 @@
+package nl.andrewlalis.ui.view;
+
+import nl.andrewlalis.git_api.GithubManager;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * In this view, the user will select a file to read a list of students from, and generates the list of teams from that.
+ */
+public class InputStudentsFileView extends AbstractView {
+
+    InputStudentsFileView(GithubManager manager) {
+        super("Input Students CSV",
+                false,
+                DISPOSE_ON_CLOSE,
+                null,
+                manager);
+    }
+
+    @Override
+    protected JPanel buildContentPane() {
+        JPanel contentPane = new JPanel(new BorderLayout());
+
+        JButton selectFileButton = new JButton("Select File");
+        contentPane.add(selectFileButton, BorderLayout.CENTER);
+
+        JButton doneButton = new JButton("Done");
+        contentPane.add(doneButton, BorderLayout.SOUTH);
+
+        return contentPane;
+    }
+}

src/main/java/nl/andrewlalis/ui/view/StartView.java

@@ -0,0 +1,63 @@
+package nl.andrewlalis.ui.view;
+
+import nl.andrewlalis.git_api.GithubManager;
+import nl.andrewlalis.ui.control.listeners.start_view.CreateAssignmentsRepoListener;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * At this view, the user is asked to first enter the name of the organization, and the access token they created for
+ * their authenticated Github account.
+ *
+ * Then, the user must choose whether they are starting a new course setup, or managing an existing one.
+ *
+ * If they choose to start a new course, they are taken to the AssignmentsRepoView, otherwise if they want to manage
+ * an existing course, they are taken to the ManagementView.
+ */
+public class StartView extends AbstractView {
+
+    // Fields which hold information needed by the Github Manager.
+    private JTextField organizationNameField;
+    private JTextField accessTokenField;
+
+    public StartView(GithubManager githubManager) {
+        super("Github Initializer Startup",
+                true,
+                DISPOSE_ON_CLOSE,
+                null,
+                githubManager);
+    }
+
+    public String getOrganizationName() {
+        return this.organizationNameField.getText();
+    }
+
+    public String getAccessToken() {
+        return this.accessTokenField.getText();
+    }
+
+    @Override
+    protected JPanel buildContentPane() {
+        JPanel contentPane = new JPanel(new BorderLayout());
+
+        JPanel infoInputPanel = new JPanel();
+        infoInputPanel.setLayout(new BoxLayout(infoInputPanel, BoxLayout.PAGE_AXIS));
+        this.organizationNameField = new JTextField();
+        infoInputPanel.add(this.generateTextFieldPanel("Organization name:", this.organizationNameField));
+        this.accessTokenField = new JTextField();
+        infoInputPanel.add(this.generateTextFieldPanel("Access token:", this.accessTokenField));
+
+        JPanel buttonsPanel = new JPanel();
+        JButton assignmentsViewButton = new JButton("Start New Course");
+        assignmentsViewButton.addActionListener(new CreateAssignmentsRepoListener(this, new CreateAssignmentsView(this.getGithubManager())));
+        JButton managementViewButton = new JButton("Manage Existing Course");
+
+        buttonsPanel.add(assignmentsViewButton);
+        buttonsPanel.add(managementViewButton);
+
+        contentPane.add(infoInputPanel, BorderLayout.CENTER);
+        contentPane.add(buttonsPanel, BorderLayout.SOUTH);
+        return contentPane;
+    }
+}

src/main/resources/sql/insert/types.sql

@@ -1,19 +0,0 @@
-INSERT INTO person_types (id, name)
-VALUES (0, 'student'),
-       (1, 'teaching-assistant'),
-       (2, 'professor');
-
-INSERT INTO team_types (id, name)
-VALUES (0, 'student_team'),
-       (1, 'teaching_assistant_team'),
-       (2, 'all_teaching_assistants'),
-       (3, 'none');
-
-INSERT INTO teams (id, team_type_id)
-VALUES (1000000, 3), -- None team for all students or TA's without a team.
-       (1000001, 2); -- Team for all teaching assistants.
-
-INSERT INTO error_types (id, name)
-VALUES (0, 'team_error'),
-       (1, 'person_error'),
-       (2, 'system_error');

src/main/resources/sql/table_init.sql

@@ -1,153 +0,0 @@
-PRAGMA foreign_keys = TRUE;
-PRAGMA writable_schema = 1;
-DELETE FROM sqlite_master WHERE type IN ('table', 'index', 'trigger');
-PRAGMA writable_schema = 0;
-VACUUM;
-
--- Basic schema design.
-CREATE TABLE IF NOT EXISTS person_types (
-  id INTEGER PRIMARY KEY,
-  name TEXT NOT NULL UNIQUE
-);
-
-CREATE TABLE IF NOT EXISTS persons (
-  id INTEGER PRIMARY KEY,
-  name TEXT NOT NULL,
-  email_address TEXT NOT NULL,
-  github_username TEXT NOT NULL UNIQUE,
-  person_type_id INTEGER NOT NULL,
-  team_id INTEGER NULL,
-  FOREIGN KEY (person_type_id)
-    REFERENCES person_types(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  FOREIGN KEY (team_id)
-    REFERENCES teams(id)
-      ON DELETE CASCADE
-      ON UPDATE CASCADE
-);
-
--- Team tables for all types of teams.
-CREATE TABLE IF NOT EXISTS team_types (
-  id INTEGER PRIMARY KEY,
-  name TEXT NOT NULL UNIQUE
-);
-
-CREATE TABLE IF NOT EXISTS teams (
-  id INTEGER PRIMARY KEY AUTOINCREMENT,
-  team_type_id INTEGER NOT NULL,
-  FOREIGN KEY (team_type_id)
-    REFERENCES team_types(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
-CREATE TABLE IF NOT EXISTS team_members (
-  id INTEGER PRIMARY KEY AUTOINCREMENT,
-  team_id INTEGER NOT NULL,
-  person_id INTEGER NOT NULL,
-  FOREIGN KEY (team_id)
-    REFERENCES teams(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  FOREIGN KEY (person_id)
-    REFERENCES persons(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  UNIQUE (team_id, person_id)
-);
-
-CREATE TABLE IF NOT EXISTS teaching_assistant_teams (
-  team_id INTEGER PRIMARY KEY,
-  name TEXT NOT NULL UNIQUE,
-  FOREIGN KEY (team_id)
-    REFERENCES teams(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
-CREATE TABLE IF NOT EXISTS student_teams (
-  team_id INTEGER PRIMARY KEY,
-  repository_name TEXT,
-  teaching_assistant_team_id INTEGER,
-  FOREIGN KEY (team_id)
-    REFERENCES teams(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  FOREIGN KEY (teaching_assistant_team_id)
-    REFERENCES  teaching_assistant_teams(team_id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
--- Student-specific tables.
-CREATE TABLE IF NOT EXISTS students (
-  person_id INTEGER PRIMARY KEY,
-  chose_partner INTEGER NOT NULL,
-  FOREIGN KEY (person_id)
-    REFERENCES persons(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
-CREATE TABLE IF NOT EXISTS student_preferred_partners (
-  student_id INTEGER PRIMARY KEY,
-  partner_id INTEGER NOT NULL,
-  FOREIGN KEY (student_id)
-    REFERENCES students(person_id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  UNIQUE (student_id, partner_id)
-);
-
--- TeachingAssistant-specific tables.
-CREATE TABLE IF NOT EXISTS teaching_assistants (
-  person_id INTEGER PRIMARY KEY,
-  FOREIGN KEY (person_id)
-    REFERENCES persons(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
--- Error queue storage.
-CREATE TABLE IF NOT EXISTS error_types (
-  id INTEGER PRIMARY KEY,
-  name TEXT NOT NULL UNIQUE
-);
-
-CREATE TABLE IF NOT EXISTS errors (
-  id INTEGER PRIMARY KEY,
-  timestamp DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  error_type_id INTEGER NOT NULL,
-  message TEXT NOT NULL,
-  FOREIGN KEY (error_type_id)
-    REFERENCES error_types(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
-CREATE TABLE IF NOT EXISTS team_errors (
-  error_id INTEGER PRIMARY KEY,
-  team_id INTEGER NOT NULL,
-  FOREIGN KEY (error_id)
-    REFERENCES errors(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  FOREIGN KEY (team_id)
-    REFERENCES teams(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);
-
-CREATE TABLE IF NOT EXISTS person_errors (
-  error_id INTEGER PRIMARY KEY,
-  person_id INTEGER NOT NULL,
-  FOREIGN KEY (error_id)
-    REFERENCES errors(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  FOREIGN KEY (person_id)
-    REFERENCES persons(id)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE
-);