Implement TextCommandProcessor

receiver/src/main/java/com/myoa/engineering/crawl/ppomppu/receiver/handler/message/text/CommonTextHandler.java

@@ -1,5 +1,7 @@
 package com.myoa.engineering.crawl.ppomppu.receiver.handler.message.text;
 
+import java.util.List;
+
 import org.springframework.stereotype.Component;
 import org.telegram.telegrambots.meta.api.objects.Message;
 
@@ -17,6 +19,12 @@ import lombok.extern.slf4j.Slf4j;
 @Component
 public class CommonTextHandler implements TextMessageHandler {
 
+    private final List<TextCommandProcessor> processors;
+
+    public CommonTextHandler(List<TextCommandProcessor> processors) {
+        this.processors = processors;
+    }
+
     @Override
     public boolean isApplicable(Message message) {
         return TextMessageHandler.super.isApplicable(message) && message.isCommand() == false;
@@ -25,5 +33,15 @@ public class CommonTextHandler implements TextMessageHandler {
     @Override
     public void handle(Message message) {
         log.info("CommonTextHandler : {}", message.getText());
+        TextCommandCode commandCode = TextCommandCode.find(message.getText());
+        TextCommandProcessor applicableProcessor = getApplicableProcessor(commandCode);
+        applicableProcessor.process(message);
+    }
+
+    private TextCommandProcessor getApplicableProcessor(TextCommandCode commandCode) {
+        return processors.stream()
+                         .filter(e -> e.isApplicable(commandCode))
+                         .findFirst()
+                         .orElseThrow(() -> new IllegalArgumentException("Can not found"));
     }
 }

receiver/src/main/java/com/myoa/engineering/crawl/ppomppu/receiver/handler/message/text/EmptyTextCommandProcessor.java

@@ -0,0 +1,24 @@
+package com.myoa.engineering.crawl.ppomppu.receiver.handler.message.text;
+
+import org.springframework.stereotype.Component;
+import org.telegram.telegrambots.meta.api.objects.Message;
+
+/**
+ * EmptyTextCommandProcessor
+ * @author Shin Woo-jin (woo-jin.shin@linecorp.com)
+ * @since 2021-09-05
+ *
+ */
+@Component
+public class EmptyTextCommandProcessor implements TextCommandProcessor {
+
+    @Override
+    public boolean isApplicable(TextCommandCode commandCode) {
+        return commandCode == TextCommandCode.EMPTY;
+    }
+
+    @Override
+    public void process(Message message) {
+
+    }
+}

receiver/src/main/java/com/myoa/engineering/crawl/ppomppu/receiver/handler/message/text/StartTextCommandProcessor.java

@@ -0,0 +1,27 @@
+package com.myoa.engineering.crawl.ppomppu.receiver.handler.message.text;
+
+import org.springframework.stereotype.Component;
+import org.telegram.telegrambots.meta.api.objects.Message;
+
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * StartCommandProcessor
+ * @author Shin Woo-jin (woo-jin.shin@linecorp.com)
+ * @since 2021-09-05
+ *
+ */
+@Slf4j
+@Component
+public class StartTextCommandProcessor implements TextCommandProcessor {
+
+    @Override
+    public boolean isApplicable(TextCommandCode commandCode) {
+        return TextCommandCode.START == commandCode;
+    }
+
+    @Override
+    public void process(Message message) {
+        log.info("[process] user: {}, command: {}", message.getChatId(), message.getText());
+    }
+}

receiver/src/main/java/com/myoa/engineering/crawl/ppomppu/receiver/handler/message/text/TextCommandCode.java

@@ -0,0 +1,32 @@
+package com.myoa.engineering.crawl.ppomppu.receiver.handler.message.text;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+/**
+ * CommandTextCode
+ * @author Shin Woo-jin (woo-jin.shin@linecorp.com)
+ * @since 2021-09-05
+ *
+ */
+@Getter
+@NoArgsConstructor
+public enum TextCommandCode {
+    EMPTY(null),
+    START("/start"),
+    ;
+    private String value;
+
+    TextCommandCode(String value) {
+        this.value = value;
+    }
+
+    public static TextCommandCode find(String value) {
+        return Arrays.stream(TextCommandCode.values())
+                     .filter(e -> e.getValue().startsWith(value))
+                     .findFirst()
+                     .orElse(TextCommandCode.EMPTY);
+    }
+}

receiver/src/main/java/com/myoa/engineering/crawl/ppomppu/receiver/handler/message/text/TextCommandProcessor.java

@@ -0,0 +1,17 @@
+package com.myoa.engineering.crawl.ppomppu.receiver.handler.message.text;
+
+import org.telegram.telegrambots.meta.api.objects.Message;
+
+/**
+ * TextCommandProcessor
+ * @author Shin Woo-jin (woo-jin.shin@linecorp.com)
+ * @since 2021-09-05
+ *
+ */
+public interface TextCommandProcessor {
+
+    boolean isApplicable(TextCommandCode commandCode);
+
+    void process(Message message);
+
+}