better command output

src/main/java/internal/hw/crawler/Main.java

@@ -14,9 +14,9 @@ public class Main {
         ArticleRepository repository = new ArticleRepository();
 
         controller.registerCommand(new ExitCommand());
-        controller.registerCommand(new CrawlCommand(repository));
+        controller.registerCommand(new CrawlCommand(repository, view));
-        controller.registerCommand(new ListCommand(repository));
+        controller.registerCommand(new ListCommand(repository, view));
-        controller.registerCommand(new HelpCommand(controller.getCommands()));
+        controller.registerCommand(new HelpCommand(controller.getCommands(), view));
 
         view.printSuccess("Welcome to crawler. Type `help` for a list of available commands.");
         while (true) {

src/main/java/internal/hw/crawler/commands/CrawlCommand.java

@@ -4,6 +4,7 @@ import internal.hw.crawler.models.Article;
 import internal.hw.crawler.repositories.ArticleRepository;
 import internal.hw.crawler.strategies.crawl.CrawlStrategy;
 import internal.hw.crawler.strategies.crawl.CrawlStrategyFactory;
+import internal.hw.crawler.views.CommandOutput;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 
@@ -12,10 +13,12 @@ import java.util.List;
 
 public class CrawlCommand implements Command {
     private final ArticleRepository repository;
+    private final CommandOutput out;
     private final CrawlStrategyFactory crawlStrategyFactory = new CrawlStrategyFactory();
 
-    public CrawlCommand(ArticleRepository repository) {
+    public CrawlCommand(ArticleRepository repository, CommandOutput out) {
         this.repository = repository;
+        this.out = out;
     }
 
     @Override
@@ -35,7 +38,7 @@ public class CrawlCommand implements Command {
             URL url = new URL(urlRaw);
             CrawlStrategy strategy = crawlStrategyFactory.getStrategy(url);
             if (strategy == null) {
-                System.err.println("Unsupported URL: " + urlRaw);
+                out.error("Unsupported URL: " + urlRaw);
                 return;
             }
 
@@ -44,6 +47,7 @@ public class CrawlCommand implements Command {
             for (Article article : articles) {
                 repository.add(article);
             }
+            out.success(String.format("Crawled %d articles from %s", articles.size(), urlRaw));
         } catch (Exception e) {
             throw new RuntimeException(e);
         }

src/main/java/internal/hw/crawler/commands/HelpCommand.java

@@ -1,13 +1,17 @@
 package internal.hw.crawler.commands;
 
+import internal.hw.crawler.views.CommandOutput;
+
 import java.util.List;
 import java.util.Map;
 
 public class HelpCommand implements Command {
     private final Map<String, Command> commands;
+    private final CommandOutput out;
 
-    public HelpCommand(Map<String, Command> commands) {
+    public HelpCommand(Map<String, Command> commands, CommandOutput out) {
         this.commands = commands;
+        this.out = out;
     }
 
     @Override
@@ -32,34 +36,33 @@ public class HelpCommand implements Command {
     }
 
     private void showAll() {
-        System.out.println("Available commands:");
+        out.info("Available commands:");
         for (Command cmd : commands.values()) {
-            System.out.printf("  %s", cmd.getName());
+            out.print("  " + cmd.getName());
-            System.out.println();
         }
-        System.out.println("Type `help <command>` to show detailed help for a specific command.");
+        out.info("Type `help <command>` to show detailed help for a specific command.");
     }
 
     private void showDetail(String name) {
         Command cmd = commands.get(name);
         if (cmd == null) {
-            System.out.println("Unknown command: " + name);
+            out.error("Unknown command: " + name);
             return;
         }
 
-        System.out.println("Command: " + cmd.getName());
+        out.info("Command: " + cmd.getName());
         List<CommandArg> cmdArgs = cmd.getArgs();
         if (cmdArgs.isEmpty()) {
-            System.out.println("  No arguments.");
+            out.print("  No arguments.");
             return;
         }
 
-        System.out.println("Arguments:");
+        out.info("Arguments:");
         for (CommandArg arg : cmdArgs) {
-            System.out.printf("  %s  %s  %s%n",
+            out.print(String.format("  %s  %s  %s",
-                    arg.required() ? "[R]" : "   ",
+                    arg.required() ? "[Required]" : "   ",
                     arg.name(),
-                    arg.description());
+                    arg.description()));
         }
     }
 }

src/main/java/internal/hw/crawler/commands/ListCommand.java

@@ -2,12 +2,15 @@ package internal.hw.crawler.commands;
 
 import internal.hw.crawler.models.Article;
 import internal.hw.crawler.repositories.ArticleRepository;
+import internal.hw.crawler.views.CommandOutput;
 
 public class ListCommand implements Command {
     private final ArticleRepository articleRepository;
+    private final CommandOutput out;
 
-    public ListCommand(ArticleRepository articleRepository) {
+    public ListCommand(ArticleRepository articleRepository, CommandOutput out) {
         this.articleRepository = articleRepository;
+        this.out = out;
     }
 
     @Override
@@ -18,7 +21,7 @@ public class ListCommand implements Command {
     @Override
     public void execute(String[] args) {
         for (Article article : articleRepository.getAll()) {
-            System.out.println(article);
+            out.print(article.toString());
         }
     }
 }

src/main/java/internal/hw/crawler/views/CommandOutput.java

@@ -0,0 +1,8 @@
+package internal.hw.crawler.views;
+
+public interface CommandOutput {
+    void print(String msg);
+    void info(String msg);
+    void success(String msg);
+    void error(String msg);
+}

src/main/java/internal/hw/crawler/views/ConsoleView.java

@@ -2,7 +2,7 @@ package internal.hw.crawler.views;
 
 import java.util.Scanner;
 
-public class ConsoleView {
+public class ConsoleView implements CommandOutput {
     private static final String ANSI_RESET = "\u001B[0m";
     private static final String ANSI_GREEN = "\u001B[32m";
     private static final String ANSI_RED = "\u001B[31m";
@@ -15,6 +15,11 @@ public class ConsoleView {
         return scanner.nextLine();
     }
 
+    @Override
+    public void print(String msg) {
+        System.out.println(msg);
+    }
+
     public void printSuccess(String msg) {
         System.out.println(ANSI_GREEN + msg + ANSI_RESET);
     }
@@ -26,4 +31,19 @@ public class ConsoleView {
     public void printInfo(String msg) {
         System.out.println(ANSI_BLUE + msg + ANSI_RESET);
     }
+
+    @Override
+    public void success(String msg) {
+        printSuccess(msg);
+    }
+
+    @Override
+    public void error(String msg) {
+        printError(msg);
+    }
+
+    @Override
+    public void info(String msg) {
+        printInfo(msg);
+    }
 }