Email integration with PEC and MAILGUN services using api call.

src/main/java/net/gepafin/tendermanagement/service/feignClient/MailgunFeignClient.java

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+package net.gepafin.tendermanagement.service.feignClient;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.List;
+
+@FeignClient(name = "mailgunClient", url = "${mailGun_base_url}")
+public interface MailgunFeignClient {
+    @PostMapping("/v3/{domain}/messages")
+    ResponseEntity<Void> sendEmail(
+            @PathVariable("domain") String domain,
+            @RequestParam("from") String from,
+            @RequestParam("to") List<String> to,
+            @RequestParam("subject") String subject,
+            @RequestParam("html") String htmlBody,
+            @RequestHeader("Authorization") String authorizationHeader);
+}
+
+

src/main/java/net/gepafin/tendermanagement/service/feignClient/PecFeignClient.java

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+package net.gepafin.tendermanagement.service.feignClient;
+
+import feign.Headers;
+import net.gepafin.tendermanagement.model.request.PecEmailRequest;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+
+@FeignClient(name = "pecClient", url = "${api.pecUrl}")
+public interface PecFeignClient {
+    @PostMapping("/send")
+    ResponseEntity<Void> sendEmail(@RequestHeader("Authorization") String token,
+            @RequestBody PecEmailRequest emailRequest);
+}
+

src/main/java/net/gepafin/tendermanagement/service/impl/EmailService.java

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+package net.gepafin.tendermanagement.service.impl;
+
+import net.gepafin.tendermanagement.model.request.EmailConfig;
+
+import java.util.List;
+
+public interface EmailService {
+    void sendEmail(String subject, String body, List<String> recipientEmails, EmailConfig emailConfig);
+}
+
+

src/main/java/net/gepafin/tendermanagement/service/impl/EmailServiceFactory.java

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+package net.gepafin.tendermanagement.service.impl;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class EmailServiceFactory {
+
+    @Autowired
+    private PecEmailService pecEmailService;
+
+    @Autowired
+    private MailgunEmailService mailgunEmailService;
+
+    public EmailService getEmailService(String serviceType) {
+        if ("MAILGUN_SERVICE".equals(serviceType)) {
+            return mailgunEmailService;
+        } else if ("PEC_SERVICE".equals(serviceType)) {
+            return pecEmailService;
+        } else {
+            throw new IllegalArgumentException("Invalid email service type: " + serviceType);
+        }
+    }
+}

src/main/java/net/gepafin/tendermanagement/service/impl/MailgunEmailService.java

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+package net.gepafin.tendermanagement.service.impl;
+
+import net.gepafin.tendermanagement.model.request.EmailConfig;
+import net.gepafin.tendermanagement.service.feignClient.MailgunFeignClient;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+
+import java.util.Base64;
+import java.util.List;
+
+@Service
+public class MailgunEmailService implements EmailService {
+
+    @Autowired
+    private MailgunFeignClient mailgunFeignClient;
+
+    @Override
+    public void sendEmail(String subject, String body, List<String> recipientEmails, EmailConfig emailConfig) {
+        String domain = emailConfig.getDomain();
+        String from = emailConfig.getSender();
+        String apiKey = emailConfig.getApiKey();
+        String authHeader = "Basic " + Base64.getEncoder().encodeToString(("api:" + apiKey).getBytes());
+
+        // Send email via Mailgun API
+        ResponseEntity<Void> response = mailgunFeignClient.sendEmail(domain, from, recipientEmails, subject, body, authHeader);
+        if (!response.getStatusCode().is2xxSuccessful()) {
+            throw new RuntimeException("Failed to send email via Mailgun: " + response.getStatusCode());
+        }
+    }
+}
+
+

src/main/java/net/gepafin/tendermanagement/service/impl/PecEmailService.java

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+package net.gepafin.tendermanagement.service.impl;
+
+import lombok.extern.slf4j.Slf4j;
+import net.gepafin.tendermanagement.model.request.EmailConfig;
+import net.gepafin.tendermanagement.model.request.PecEmailRequest;
+import net.gepafin.tendermanagement.service.feignClient.PecFeignClient;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Slf4j
+@Service
+public class PecEmailService implements EmailService {
+    private final PecFeignClient pecFeignClient;
+
+    public PecEmailService(PecFeignClient pecFeignClient) {
+
+        this.pecFeignClient = pecFeignClient;
+    }
+
+    @Override
+    public void sendEmail(String subject, String body, List<String> recipientEmails, EmailConfig emailConfig) {
+        PecEmailRequest emailRequest = new PecEmailRequest();
+        emailRequest.setSender(emailConfig.getSender());
+        emailRequest.setRecipient(recipientEmails);
+        emailRequest.setSubject(subject);
+        emailRequest.setBody(body);
+        emailRequest.setUsername(emailConfig.getUsername());
+        emailRequest.setPassword(emailConfig.getPassword());
+
+        String authToken = emailConfig.getAuthToken();
+        ResponseEntity<Void> response = pecFeignClient.sendEmail("Bearer " + authToken, emailRequest);
+        log.info("Mail response status: {}, headers: {}, body: {}", response.getStatusCode(), response.getHeaders(), response.getBody());
+        if (!response.getStatusCode().is2xxSuccessful()) {
+            throw new RuntimeException("Failed to send email via PEC: " + response.getStatusCode());
+        }
+    }
+}
+
+