recovery del pass hecho en el backend a falta de hacer los formularios

src/main/java/com/imprimelibros/erp/common/EmailService.java

@@ -0,0 +1,54 @@
+package com.imprimelibros.erp.common;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+
+import org.springframework.context.MessageSource;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Service;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.util.Locale;
+import java.util.Map;
+
+@Service
+public class EmailService {
+
+    private final JavaMailSender mailSender;
+    private final TemplateEngine templateEngine;
+    private final MessageSource messageSource;
+
+    public EmailService(JavaMailSender mailSender, TemplateEngine templateEngine, MessageSource messageSource) {
+        this.mailSender = mailSender;
+        this.templateEngine = templateEngine;
+        this.messageSource = messageSource;
+    }
+
+    public void sendPasswordResetMail(String to, String username, String resetLink, Locale locale) throws MessagingException {
+        MimeMessage message = mailSender.createMimeMessage();
+        MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
+
+        helper.setFrom("no-reply@imprimelibros.com");
+        helper.setTo(to);
+        helper.setSubject(messageSource.getMessage("email.resetPassword.title", null, locale));
+
+        // Variables para la plantilla
+        Context context = new Context();
+        context.setVariables(Map.of(
+                "username", username,
+                "resetLink", resetLink,
+                "year", String.valueOf(java.time.Year.now().getValue())
+        ));
+
+        // Procesar plantilla HTML
+        String html = templateEngine.process("email/password-reset", context);
+        helper.setText(html, true);
+
+        helper.addInline("companyLogo", new ClassPathResource("static/images/logo-light.png"));
+
+        mailSender.send(message);
+    }
+}

src/main/java/com/imprimelibros/erp/common/RateLimiterService.java

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+package com.imprimelibros.erp.common;
+
+import io.github.bucket4j.Bandwidth;
+import io.github.bucket4j.Bucket;
+import io.github.bucket4j.Refill;
+import org.springframework.stereotype.Service;
+
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Service
+public class RateLimiterService {
+
+    private final Map<String, Bucket> buckets = new ConcurrentHashMap<>();
+
+    // 5 solicitudes cada 15 minutos por clave (IP)
+    private Bucket newBucket() {
+        Bandwidth limit = Bandwidth.classic(5, Refill.greedy(5, Duration.ofMinutes(15)));
+        return Bucket.builder().addLimit(limit).build();
+    }
+
+    public boolean tryConsume(String key) {
+        return buckets.computeIfAbsent(key, k -> newBucket()).tryConsume(1);
+    }
+}