Move IO providers into io package, add InputProcessor, implement menu loop and file load command

Wires InputProcessor into the console menu's selection loop and the
load-file command's prompt handling, replacing the unimplemented stub.

8 files changed, 115 insertions, 23 deletions

diff --git a/ui-console/src/main/java/market/guess/ui/console/App.java b/ui-console/src/main/java/market/guess/ui/console/App.java
index ccffc06..148e928 100644
--- a/ui-console/src/main/java/market/guess/ui/console/App.java
+++ b/ui-console/src/main/java/market/guess/ui/console/App.java
@@ -11,6 +11,11 @@ import market.guess.service.repository.InMemoryEventRepository;
 import market.guess.service.repository.InMemoryUserRepository;
 import market.guess.service.repository.UserRepository;
 import market.guess.ui.console.command.LoadFileMenuCommand;
+import market.guess.ui.console.io.ConsoleInputProvider;
+import market.guess.ui.console.io.ConsoleOutputProvider;
+import market.guess.ui.console.io.InputProcessor;
+import market.guess.ui.console.io.InputProvider;
+import market.guess.ui.console.io.OutputProvider;
 import org.picocontainer.DefaultPicoContainer;
 import org.picocontainer.behaviors.Caching;
 
@@ -29,6 +34,7 @@ public class App {
 
     pico.addComponent(InputProvider.class, ConsoleInputProvider.class);
     pico.addComponent(OutputProvider.class, ConsoleOutputProvider.class);
+    pico.addComponent(InputProcessor.class);
     pico.addComponent(Menu.class);
 
     pico.start();
diff --git a/ui-console/src/main/java/market/guess/ui/console/Menu.java b/ui-console/src/main/java/market/guess/ui/console/Menu.java
index 1f3f2be..0521e5f 100644
--- a/ui-console/src/main/java/market/guess/ui/console/Menu.java
+++ b/ui-console/src/main/java/market/guess/ui/console/Menu.java
@@ -2,23 +2,39 @@ package market.guess.ui.console;
 
 import java.util.List;
 import market.guess.ui.console.command.MenuCommand;
+import market.guess.ui.console.io.InputProcessor;
+import market.guess.ui.console.io.OutputProvider;
 import org.picocontainer.Startable;
 
 public final class Menu implements Startable {
   private final OutputProvider out;
-  private final InputProvider in;
+  private final InputProcessor in;
   private final List<MenuCommand> commands;
 
-  public Menu(
-      List<MenuCommand> commands, OutputProvider outputProvider, InputProvider inputProvider) {
+  public Menu(List<MenuCommand> commands, OutputProvider out, InputProcessor in) {
     this.commands = commands;
-    this.out = outputProvider;
-    this.in = inputProvider;
+    this.out = out;
+    this.in = in;
   }
 
   @Override
   public void start() {
-    printMenu();
+    out.splashScreen();
+
+    while (true) {
+      printMenu();
+
+      var selection = in.readInt("Choose a command: ", 1, commands.size());
+      var commandOptional = commands.stream().filter(c -> c.getIndex() == selection).findFirst();
+
+      if (commandOptional.isEmpty()) {
+        out.println("There is no command %d.".formatted(selection));
+        continue;
+      }
+      var command = commandOptional.get();
+
+      command.execute();
+    }
   }
 
   @Override
diff --git a/ui-console/src/main/java/market/guess/ui/console/command/LoadFileMenuCommand.java b/ui-console/src/main/java/market/guess/ui/console/command/LoadFileMenuCommand.java
index eddc68f..5a91fe0 100644
--- a/ui-console/src/main/java/market/guess/ui/console/command/LoadFileMenuCommand.java
+++ b/ui-console/src/main/java/market/guess/ui/console/command/LoadFileMenuCommand.java
@@ -1,15 +1,19 @@
 package market.guess.ui.console.command;
 
+import java.nio.file.Path;
 import market.guess.api.GuessMarketContext;
-import market.guess.ui.console.OutputProvider;
+import market.guess.ui.console.io.InputProcessor;
+import market.guess.ui.console.io.OutputProvider;
 
 public final class LoadFileMenuCommand implements MenuCommand {
   private final GuessMarketContext context;
   private final OutputProvider out;
+  private final InputProcessor in;
 
-  public LoadFileMenuCommand(GuessMarketContext context, OutputProvider out) {
+  public LoadFileMenuCommand(GuessMarketContext context, InputProcessor in, OutputProvider out) {
     this.context = context;
     this.out = out;
+    this.in = in;
   }
 
   @Override
@@ -29,7 +33,12 @@ public final class LoadFileMenuCommand implements MenuCommand {
 
   @Override
   public void execute() {
-    // TODO Auto-generated method stub
-    throw new UnsupportedOperationException("Unimplemented method 'execute'");
+    var path = in.readPath("Pleae enter the full file path to the XML file: ");
+    var result = context.loadEvents(Path.of(path));
+
+    if (result.success()) {
+      out.println("Loaded %d event(s) from %s.".formatted(result.eventsLoaded(), result.source()));
+      return;
+    }
   }
 }
diff --git a/ui-console/src/main/java/market/guess/ui/console/ConsoleInputProvider.java b/ui-console/src/main/java/market/guess/ui/console/io/ConsoleInputProvider.java
index 38b02a9..5c93f71 100644
--- a/ui-console/src/main/java/market/guess/ui/console/ConsoleInputProvider.java
+++ b/ui-console/src/main/java/market/guess/ui/console/io/ConsoleInputProvider.java
@@ -1,4 +1,4 @@
-package market.guess.ui.console;
+package market.guess.ui.console.io;
 
 import java.util.Scanner;
 
@@ -6,16 +6,12 @@ public class ConsoleInputProvider implements InputProvider {
   private final Scanner scanner = new Scanner(System.in);
 
   @Override
-  public int nextInt() {
-    while (!scanner.hasNextInt()) {
-      scanner.next();
-    }
-
-    return scanner.nextInt();
+  public void close() throws Exception {
+    scanner.close();
   }
 
   @Override
-  public void close() throws Exception {
-    scanner.close();
+  public String nextLine() {
+    return scanner.hasNextLine() ? scanner.nextLine() : null;
   }
 }
diff --git a/ui-console/src/main/java/market/guess/ui/console/ConsoleOutputProvider.java b/ui-console/src/main/java/market/guess/ui/console/io/ConsoleOutputProvider.java
index 3009d95..6fa7595 100644
--- a/ui-console/src/main/java/market/guess/ui/console/ConsoleOutputProvider.java
+++ b/ui-console/src/main/java/market/guess/ui/console/io/ConsoleOutputProvider.java
@@ -1,4 +1,4 @@
-package market.guess.ui.console;
+package market.guess.ui.console.io;
 
 public class ConsoleOutputProvider implements OutputProvider {
 
@@ -16,4 +16,9 @@ public class ConsoleOutputProvider implements OutputProvider {
   public void newLine() {
     IO.println("");
   }
+
+  @Override
+  public void splashScreen() {
+    IO.println("<<-- GUESS MARKET -->>");
+  }
 }
diff --git a/ui-console/src/main/java/market/guess/ui/console/io/InputProcessor.java b/ui-console/src/main/java/market/guess/ui/console/io/InputProcessor.java
new file mode 100644
index 0000000..9f03acb
--- /dev/null
+++ b/ui-console/src/main/java/market/guess/ui/console/io/InputProcessor.java
@@ -0,0 +1,58 @@
+package market.guess.ui.console.io;
+
+public final class InputProcessor {
+  private final OutputProvider out;
+  private final InputProvider in;
+
+  public InputProcessor(InputProvider in, OutputProvider out) {
+    super();
+    this.in = in;
+    this.out = out;
+  }
+
+  public String readLine(String prompt) {
+    out.print(prompt);
+    var line = in.nextLine();
+
+    return line.trim();
+  }
+
+  public int readInt(String prompt, int min, int max) {
+    while (true) {
+      var raw = in.nextLine();
+      if (raw.isBlank()) {
+        out.println("Please enter a number between %d and %d.".formatted(min, max));
+        continue;
+      }
+      try {
+        var value = Integer.parseInt(raw);
+
+        if (value > max || value < min) {
+          out.println(
+              "%d is out of range, please enter a number between %d and %d."
+                  .formatted(value, min, max));
+          continue;
+        }
+        return value;
+      } catch (NumberFormatException e) {
+        out.println(
+            "%s in not a number, please enter a number between %d and %d."
+                .formatted(raw, min, max));
+        continue;
+      }
+    }
+  }
+
+  public String readPath(String prompt) {
+    while (true) {
+      var raw = readLine(prompt);
+
+      if (raw.isBlank()) {
+        out.println("Please enter a file path.");
+        continue;
+      }
+
+      return raw;
+    }
+  }
+}
diff --git a/ui-console/src/main/java/market/guess/ui/console/InputProvider.java b/ui-console/src/main/java/market/guess/ui/console/io/InputProvider.java
index 3579b4a..9404bb7 100644
--- a/ui-console/src/main/java/market/guess/ui/console/InputProvider.java
+++ b/ui-console/src/main/java/market/guess/ui/console/io/InputProvider.java
@@ -1,5 +1,5 @@
-package market.guess.ui.console;
+package market.guess.ui.console.io;
 
 public interface InputProvider extends AutoCloseable {
-  int nextInt();
+  String nextLine();
 }
diff --git a/ui-console/src/main/java/market/guess/ui/console/OutputProvider.java b/ui-console/src/main/java/market/guess/ui/console/io/OutputProvider.java
index e49bec5..e419351 100644
--- a/ui-console/src/main/java/market/guess/ui/console/OutputProvider.java
+++ b/ui-console/src/main/java/market/guess/ui/console/io/OutputProvider.java
@@ -1,9 +1,11 @@
-package market.guess.ui.console;
+package market.guess.ui.console.io;
 
 public interface OutputProvider {
   void print(Object object);
 
   void newLine();
 
+  void splashScreen();
+
   void println(Object object);
 }