From 2959947acc121330f7b234a2a9ccb6087ae06426 Mon Sep 17 00:00:00 2001
From: andrewlalis <andrewlalisofficial@gmail.com>
Date: Wed, 20 Dec 2023 13:16:44 -0500
Subject: [PATCH] Added scene router, main view for the entire app, and more
 preparations for a multi-page application.

---
 .../com/andrewlalis/perfin/PerfinApp.java     | 11 ++++-
 .../control/AccountsViewController.java       | 29 +++++++++--
 .../perfin/control/MainViewController.java    | 24 +++++++++
 .../perfin/data/AccountRepository.java        |  2 +
 .../data/impl/JdbcAccountRepository.java      |  7 +++
 .../andrewlalis/perfin/view/SceneRouter.java  | 49 +++++++++++++++++++
 src/main/resources/accounts-view.fxml         | 40 +++++++++------
 src/main/resources/edit-account.fxml          | 33 +++++++++++++
 src/main/resources/main-view.fxml             | 26 ++++++++++
 src/main/resources/style/accounts-view.css    | 10 +++-
 src/main/resources/style/main-view.css        |  7 +++
 11 files changed, 216 insertions(+), 22 deletions(-)
 create mode 100644 src/main/java/com/andrewlalis/perfin/control/MainViewController.java
 create mode 100644 src/main/java/com/andrewlalis/perfin/view/SceneRouter.java
 create mode 100644 src/main/resources/edit-account.fxml
 create mode 100644 src/main/resources/main-view.fxml
 create mode 100644 src/main/resources/style/main-view.css

diff --git a/src/main/java/com/andrewlalis/perfin/PerfinApp.java b/src/main/java/com/andrewlalis/perfin/PerfinApp.java
index dcbb876..918dd4a 100644
--- a/src/main/java/com/andrewlalis/perfin/PerfinApp.java
+++ b/src/main/java/com/andrewlalis/perfin/PerfinApp.java
@@ -1,10 +1,14 @@
 package com.andrewlalis.perfin;
 
+import com.andrewlalis.perfin.control.MainViewController;
+import com.andrewlalis.perfin.view.SceneRouter;
 import com.andrewlalis.perfin.view.SplashScreenStage;
 import javafx.application.Application;
+import javafx.scene.Scene;
 import javafx.stage.Stage;
 
 import java.nio.file.Path;
+import java.util.function.Consumer;
 
 /**
  * The class from which the JavaFX-based application starts.
@@ -29,7 +33,12 @@ public class PerfinApp extends Application {
 
     private void initMainScreen(Stage stage) {
         stage.hide();
-        stage.setScene(SceneUtil.load("/accounts-view.fxml"));
+        Scene mainViewScene = SceneUtil.load("/main-view.fxml", (Consumer<MainViewController>) c -> {
+            c.router = new SceneRouter(c.mainContainer::setCenter)
+                    .map("accounts", "/accounts-view.fxml")
+                    .map("edit-account", "/edit-account.fxml");
+        });
+        stage.setScene(mainViewScene);
         stage.setTitle("Perfin");
     }
 }
\ No newline at end of file
diff --git a/src/main/java/com/andrewlalis/perfin/control/AccountsViewController.java b/src/main/java/com/andrewlalis/perfin/control/AccountsViewController.java
index 9fe8edb..86dc784 100644
--- a/src/main/java/com/andrewlalis/perfin/control/AccountsViewController.java
+++ b/src/main/java/com/andrewlalis/perfin/control/AccountsViewController.java
@@ -4,13 +4,17 @@ import com.andrewlalis.perfin.SceneUtil;
 import com.andrewlalis.perfin.model.Account;
 import com.andrewlalis.perfin.model.Profile;
 import com.andrewlalis.perfin.view.BindingUtil;
+import javafx.application.Platform;
+import javafx.beans.property.SimpleListProperty;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
+import javafx.scene.Scene;
+import javafx.scene.control.Label;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.FlowPane;
+import javafx.stage.Stage;
 
-import java.util.List;
 import java.util.function.Consumer;
 
 public class AccountsViewController {
@@ -18,27 +22,42 @@ public class AccountsViewController {
     public BorderPane mainContainer;
     @FXML
     public FlowPane accountsPane;
+    @FXML
+    public Label noAccountsLabel;
 
     private final ObservableList<Account> accountsList = FXCollections.observableArrayList();
 
     @FXML
     public void initialize() {
+        // Sync the size of the accounts pane to its container.
         accountsPane.minWidthProperty().bind(mainContainer.widthProperty());
         accountsPane.prefWidthProperty().bind(mainContainer.widthProperty());
         accountsPane.prefWrapLengthProperty().bind(mainContainer.widthProperty());
         accountsPane.maxWidthProperty().bind(mainContainer.widthProperty());
 
+        // Map each account in our list to an account tile element.
         BindingUtil.mapContent(accountsPane.getChildren(), accountsList, account -> SceneUtil.loadNode(
                 "/account-tile.fxml",
                 (Consumer<AccountTileController>) c -> c.setAccount(account)
         ));
+
+        // Show the "no accounts" label when the accountsList is empty.
+        var listProp = new SimpleListProperty<>(accountsList);
+        noAccountsLabel.visibleProperty().bind(listProp.emptyProperty());
+        noAccountsLabel.managedProperty().bind(noAccountsLabel.visibleProperty());
+        accountsPane.visibleProperty().bind(listProp.emptyProperty().not());
+        accountsPane.managedProperty().bind(accountsPane.visibleProperty());
+
+        // Populate the list of accounts once a profile is available.
         Profile.whenLoaded(profile -> {
-            populateAccounts(profile.getDataSource().getAccountRepository().findAll());
+            accountsList.setAll(profile.getDataSource().getAccountRepository().findAll());
         });
     }
 
-    private void populateAccounts(List<Account> accounts) {
-        this.accountsList.clear();
-        this.accountsList.addAll(accounts);
+    @FXML
+    public void createNewAccount() {
+        Stage mainStage = (Stage) mainContainer.getScene().getWindow();
+        Scene editAccountScene = SceneUtil.load("/edit-account.fxml");
+        mainStage.setScene(editAccountScene);
     }
 }
diff --git a/src/main/java/com/andrewlalis/perfin/control/MainViewController.java b/src/main/java/com/andrewlalis/perfin/control/MainViewController.java
new file mode 100644
index 0000000..af7fb5d
--- /dev/null
+++ b/src/main/java/com/andrewlalis/perfin/control/MainViewController.java
@@ -0,0 +1,24 @@
+package com.andrewlalis.perfin.control;
+
+import com.andrewlalis.perfin.view.SceneRouter;
+import javafx.fxml.FXML;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.layout.HBox;
+
+public class MainViewController {
+    public SceneRouter router;
+    @FXML
+    public BorderPane mainContainer;
+    @FXML
+    public HBox mainFooter;
+
+    @FXML
+    public void goToAccounts() {
+        router.goTo("accounts");
+    }
+
+    @FXML
+    public void goToEditAccounts() {
+        router.goTo("edit-account");
+    }
+}
diff --git a/src/main/java/com/andrewlalis/perfin/data/AccountRepository.java b/src/main/java/com/andrewlalis/perfin/data/AccountRepository.java
index 4ba0d49..d565045 100644
--- a/src/main/java/com/andrewlalis/perfin/data/AccountRepository.java
+++ b/src/main/java/com/andrewlalis/perfin/data/AccountRepository.java
@@ -2,6 +2,7 @@ package com.andrewlalis.perfin.data;
 
 import com.andrewlalis.perfin.model.Account;
 
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.Optional;
 
@@ -9,4 +10,5 @@ public interface AccountRepository {
     long insert(Account account);
     List<Account> findAll();
     Optional<Account> findById(long id);
+    BigDecimal deriveCurrentBalance(long id);
 }
diff --git a/src/main/java/com/andrewlalis/perfin/data/impl/JdbcAccountRepository.java b/src/main/java/com/andrewlalis/perfin/data/impl/JdbcAccountRepository.java
index 1b0be21..9d47453 100644
--- a/src/main/java/com/andrewlalis/perfin/data/impl/JdbcAccountRepository.java
+++ b/src/main/java/com/andrewlalis/perfin/data/impl/JdbcAccountRepository.java
@@ -5,6 +5,7 @@ import com.andrewlalis.perfin.data.DbUtil;
 import com.andrewlalis.perfin.model.Account;
 import com.andrewlalis.perfin.model.AccountType;
 
+import java.math.BigDecimal;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -39,6 +40,12 @@ public record JdbcAccountRepository(Connection conn) implements AccountRepositor
         return DbUtil.findById(conn, "SELECT * FROM account WHERE id = ?", id, JdbcAccountRepository::parseAccount);
     }
 
+    @Override
+    public BigDecimal deriveCurrentBalance(long id) {
+        // TODO: Implement this!
+        return BigDecimal.valueOf(0, 4);
+    }
+
     private static Account parseAccount(ResultSet rs) throws SQLException {
         long id = rs.getLong("id");
         LocalDateTime createdAt = DbUtil.utcLDTFromTimestamp(rs.getTimestamp("created_at"));
diff --git a/src/main/java/com/andrewlalis/perfin/view/SceneRouter.java b/src/main/java/com/andrewlalis/perfin/view/SceneRouter.java
new file mode 100644
index 0000000..96a925c
--- /dev/null
+++ b/src/main/java/com/andrewlalis/perfin/view/SceneRouter.java
@@ -0,0 +1,49 @@
+package com.andrewlalis.perfin.view;
+
+import com.andrewlalis.perfin.SceneUtil;
+import javafx.application.Platform;
+import javafx.scene.Parent;
+import javafx.scene.layout.Pane;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Consumer;
+
+public class SceneRouter {
+    private final Consumer<Parent> setter;
+    private final Map<String, Parent> routeMap = new HashMap<>();
+    public Object context = null;
+
+    public SceneRouter(Pane pane) {
+        this(p -> pane.getChildren().setAll(p));
+    }
+
+    public SceneRouter(Consumer<Parent> setter) {
+        this.setter = setter;
+    }
+
+    public SceneRouter map(String route, Parent scene) {
+        routeMap.put(route, scene);
+        return this;
+    }
+
+    public SceneRouter map(String route, String fxml) {
+        return map(route, SceneUtil.loadNode(fxml));
+    }
+
+    public void goTo(String route, Object context) {
+        Parent node = routeMap.get(route);
+        if (node == null) throw new IllegalArgumentException("Route " + route + " is not mapped to any node.");
+        this.context = context;
+        Platform.runLater(() -> setter.accept(node));
+    }
+
+    public void goTo(String route) {
+        goTo(route, null);
+    }
+
+    @SuppressWarnings("unchecked")
+    public <T> T getContext() {
+        return (T) context;
+    }
+}
diff --git a/src/main/resources/accounts-view.fxml b/src/main/resources/accounts-view.fxml
index 13c74e8..8406b08 100644
--- a/src/main/resources/accounts-view.fxml
+++ b/src/main/resources/accounts-view.fxml
@@ -1,8 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import javafx.scene.control.*?>
 <?import javafx.scene.layout.BorderPane?>
 <?import javafx.scene.layout.FlowPane?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.control.Button?>
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Label?>
 <BorderPane
         minHeight="400.0"
         minWidth="600.0"
@@ -12,20 +16,26 @@
         fx:id="mainContainer"
         stylesheets="@style/accounts-view.css"
 >
-   <top>
-       <MenuBar BorderPane.alignment="CENTER">
-           <Menu mnemonicParsing="false" text="File">
-               <MenuItem mnemonicParsing="false" text="Close" />
-           </Menu>
-           <Menu mnemonicParsing="false" text="Edit">
-               <MenuItem mnemonicParsing="false" text="Delete" />
-           </Menu>
-           <Menu mnemonicParsing="false" text="Help">
-               <MenuItem mnemonicParsing="false" text="About" />
-           </Menu>
-       </MenuBar>
-   </top>
+<!--   <top>-->
+<!--       <MenuBar BorderPane.alignment="CENTER">-->
+<!--           <Menu mnemonicParsing="false" text="File">-->
+<!--               <MenuItem mnemonicParsing="false" text="Close" />-->
+<!--           </Menu>-->
+<!--           <Menu mnemonicParsing="false" text="Edit">-->
+<!--               <MenuItem mnemonicParsing="false" text="Delete" />-->
+<!--           </Menu>-->
+<!--           <Menu mnemonicParsing="false" text="Help">-->
+<!--               <MenuItem mnemonicParsing="false" text="About" />-->
+<!--           </Menu>-->
+<!--       </MenuBar>-->
+<!--   </top>-->
    <center>
-       <FlowPane fx:id="accountsPane" BorderPane.alignment="TOP_LEFT" vgap="5" hgap="5"/>
+       <VBox>
+           <HBox styleClass="actionsBar">
+               <Button text="Add an Account" onAction="#createNewAccount"/>
+           </HBox>
+           <FlowPane fx:id="accountsPane" BorderPane.alignment="TOP_LEFT" vgap="5" hgap="5"/>
+           <Label fx:id="noAccountsLabel" BorderPane.alignment="TOP_LEFT" text="No accounts have been added to this profile."/>
+       </VBox>
    </center>
 </BorderPane>
diff --git a/src/main/resources/edit-account.fxml b/src/main/resources/edit-account.fxml
new file mode 100644
index 0000000..db7302f
--- /dev/null
+++ b/src/main/resources/edit-account.fxml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<BorderPane xmlns="http://javafx.com/javafx/17.0.2-ea" xmlns:fx="http://javafx.com/fxml/1">
+    <top>
+        <Label text="Edit Account"/>
+    </top>
+    <center>
+        <GridPane BorderPane.alignment="CENTER">
+            <columnConstraints>
+                <ColumnConstraints hgrow="NEVER" minWidth="10.0" />
+                <ColumnConstraints hgrow="ALWAYS" minWidth="10.0" />
+            </columnConstraints>
+            <Label GridPane.columnIndex="0" GridPane.rowIndex="0" text="Name"/>
+            <TextField GridPane.columnIndex="1" GridPane.rowIndex="0" text="Bleh"/>
+
+            <Label GridPane.columnIndex="0" GridPane.rowIndex="1" text="Account Number"/>
+            <TextField GridPane.columnIndex="1" GridPane.rowIndex="1" text="1234"/>
+
+            <Label GridPane.columnIndex="0" GridPane.rowIndex="2" text="Currency"/>
+            <ChoiceBox GridPane.columnIndex="1" GridPane.rowIndex="2">
+            </ChoiceBox>
+        </GridPane>
+    </center>
+    <bottom>
+        <FlowPane BorderPane.alignment="CENTER_RIGHT">
+            <Button text="Save" />
+            <Button text="Cancel" />
+        </FlowPane>
+    </bottom>
+</BorderPane>
diff --git a/src/main/resources/main-view.fxml b/src/main/resources/main-view.fxml
new file mode 100644
index 0000000..b2c380e
--- /dev/null
+++ b/src/main/resources/main-view.fxml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.BorderPane?>
+<?import javafx.scene.layout.HBox?>
+<BorderPane
+        xmlns="http://javafx.com/javafx"
+        xmlns:fx="http://javafx.com/fxml"
+        fx:id="mainContainer"
+        fx:controller="com.andrewlalis.perfin.control.MainViewController"
+        stylesheets="@style/main-view.css"
+>
+    <top>
+        <HBox fx:id="mainHeader">
+            <Label text="TODO: Add breadcrumb navigation/header here!"/>
+            <Button text="Go to accounts!" onAction="#goToAccounts"/>
+            <Button text="Go to edit accounts!" onAction="#goToEditAccounts"/>
+        </HBox>
+    </top>
+    <bottom>
+        <HBox fx:id="mainFooter" spacing="5">
+            <Label text="Perfin v0.0.1"/>
+            <Label text="Copyright Bleh"/>
+        </HBox>
+    </bottom>
+</BorderPane>
diff --git a/src/main/resources/style/accounts-view.css b/src/main/resources/style/accounts-view.css
index 471e3a4..96a7e6e 100644
--- a/src/main/resources/style/accounts-view.css
+++ b/src/main/resources/style/accounts-view.css
@@ -1,3 +1,11 @@
 #accountsPane {
     -fx-padding: 5px;
-}
\ No newline at end of file
+}
+
+#noAccountsLabel {
+    -fx-padding: 5px;
+}
+
+.actionsBar {
+    -fx-padding: 5px;
+}
diff --git a/src/main/resources/style/main-view.css b/src/main/resources/style/main-view.css
new file mode 100644
index 0000000..78504ff
--- /dev/null
+++ b/src/main/resources/style/main-view.css
@@ -0,0 +1,7 @@
+#mainHeader {
+    -fx-padding: 3px;
+}
+
+#mainFooter {
+    -fx-padding: 3px;
+}
\ No newline at end of file