adding twilio configurations

Author: hardikSinghBehl

saas-modules/twilio-whatsapp/pom.xml

@@ -20,6 +20,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-configuration-processor</artifactId>

saas-modules/twilio-whatsapp/src/main/java/com/baeldung/twilio/whatsapp/TwilioConfigurationProperties.java

@@ -0,0 +1,42 @@
+package com.baeldung.twilio.whatsapp;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.validation.annotation.Validated;
+
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Validated
+@ConfigurationProperties(prefix = "com.baeldung.twilio")
+public class TwilioConfigurationProperties {
+
+    @NotBlank(message = "Twilio account SID must be configured")
+    @Pattern(regexp = "^AC[0-9a-fA-F]{32}$", message = "Invalid Twilio account SID format")
+    private String accountSid;
+
+    @NotBlank(message = "Twilio auth token must be configured")
+    private String authToken;
+
+    @NotBlank(message = "Twilio messaging SID must be configured")
+    @Pattern(regexp = "^MG[0-9a-fA-F]{32}$", message = "Invalid Twilio messaging SID format")
+    private String messagingSid;
+
+    @Valid
+    private NewArticleNotification newArticleNotification = new NewArticleNotification();
+
+    @Getter
+    @Setter
+    public class NewArticleNotification {
+
+        @NotBlank(message = "Content SID must be configured")
+        @Pattern(regexp = "^HX[0-9a-fA-F]{32}$", message = "Invalid content SID format")
+        private String contentSid;
+
+    }
+
+}

saas-modules/twilio-whatsapp/src/main/java/com/baeldung/twilio/whatsapp/TwilioInitializer.java

@@ -0,0 +1,26 @@
+package com.baeldung.twilio.whatsapp;
+
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+import com.twilio.Twilio;
+
+import lombok.RequiredArgsConstructor;
+
+@Component
+@RequiredArgsConstructor
+@EnableConfigurationProperties(TwilioConfigurationProperties.class)
+public class TwilioInitializer implements ApplicationRunner {
+
+    private final TwilioConfigurationProperties twilioConfigurationProperties;
+
+    @Override
+    public void run(ApplicationArguments args) {
+        String accountSid = twilioConfigurationProperties.getAccountSid();
+        String authToken = twilioConfigurationProperties.getAuthToken();
+        Twilio.init(accountSid, authToken);
+    }
+
+}

saas-modules/twilio-whatsapp/src/main/resources/application.yaml

@@ -0,0 +1,8 @@
+com:
+  baeldung:
+    twilio:
+      account-sid: ${TWILIO_ACCOUNT_SID}
+      auth-token: ${TWILIO_AUTH_TOKEN}
+      messaging-sid: ${TWILIO_MESSAGING_SID}
+      new-article-notification:
+        content-sid: ${NEW_ARTICLE_NOTIFICATION_CONTENT_SID}