Added user notifications, improved transfer interface, and some refactoring.

src/main/java/nl/andrewl/coyotecredit/config/UserNotificationSetFilter.java

@@ -0,0 +1,36 @@
+package nl.andrewl.coyotecredit.config;
+
+import lombok.RequiredArgsConstructor;
+import nl.andrewl.coyotecredit.dao.UserNotificationRepository;
+import nl.andrewl.coyotecredit.model.User;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * A filter that fetches and sets the user's notification count, which is
+ * displayed in the header for easy checking.
+ */
+@Component
+@RequiredArgsConstructor
+public class UserNotificationSetFilter extends OncePerRequestFilter {
+	private final UserNotificationRepository notificationRepository;
+
+	@Override
+	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		if (auth != null) {
+			User user = (User) auth.getPrincipal();
+			user.setNewNotificationCount(notificationRepository.countAllNewNotifications(user));
+			user.setHasNotifications(user.getNewNotificationCount() > 0);
+		}
+		filterChain.doFilter(request, response);
+	}
+}

src/main/java/nl/andrewl/coyotecredit/config/WebSecurityConfig.java

@@ -9,6 +9,7 @@ import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter;
 
 @Configuration
 @EnableWebSecurity
@@ -20,6 +21,7 @@ import org.springframework.security.crypto.password.PasswordEncoder;
 public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 	private final CCUserDetailsService userDetailsService;
 	private final PasswordEncoder passwordEncoder;
+	private final UserNotificationSetFilter userNotificationSetFilter;
 
 	@Override
 	protected void configure(HttpSecurity http) throws Exception {
@@ -43,6 +45,7 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 				.logoutSuccessUrl("/login")
 				.deleteCookies("JSESSIONID");
 
+		http.addFilterAfter(this.userNotificationSetFilter, SecurityContextHolderAwareRequestFilter.class);
 	}
 
 	@Override

src/main/java/nl/andrewl/coyotecredit/ctl/HomePage.java

@@ -17,7 +17,7 @@ public class HomePage {
 
 	@GetMapping
 	public String get(Model model, @AuthenticationPrincipal User user) {
-		model.addAttribute("accounts", accountService.getAccountsOverview(user));
+		//model.addAttribute("accounts", accountService.getAccountsOverview(user));
 		return "home";
 	}
 }

src/main/java/nl/andrewl/coyotecredit/ctl/dto/ExchangeAccountData.java

@@ -1,6 +0,0 @@
-package nl.andrewl.coyotecredit.ctl.dto;
-
-public record ExchangeAccountData(
-		ExchangeData exchange,
-		SimpleAccountData account
-) {}

src/main/java/nl/andrewl/coyotecredit/ctl/dto/FullAccountData.java

@@ -1,5 +1,7 @@
 package nl.andrewl.coyotecredit.ctl.dto;
 
+import nl.andrewl.coyotecredit.ctl.exchange.dto.ExchangeData;
+
 import java.util.List;
 
 /**

src/main/java/nl/andrewl/coyotecredit/ctl/dto/UserData.java

@@ -1,10 +0,0 @@
-package nl.andrewl.coyotecredit.ctl.dto;
-
-import java.util.List;
-
-public record UserData (
-		long id,
-		String username,
-		String email,
-		List<InvitationData> exchangeInvitations
-) {}

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/ExchangeController.java

@@ -1,9 +1,9 @@
-package nl.andrewl.coyotecredit.ctl;
+package nl.andrewl.coyotecredit.ctl.exchange;
 
 import lombok.RequiredArgsConstructor;
-import nl.andrewl.coyotecredit.ctl.dto.AddSupportedTradeablePayload;
-import nl.andrewl.coyotecredit.ctl.dto.EditExchangePayload;
-import nl.andrewl.coyotecredit.ctl.dto.InviteUserPayload;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.AddSupportedTradeablePayload;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.EditExchangePayload;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.InviteUserPayload;
 import nl.andrewl.coyotecredit.model.User;
 import nl.andrewl.coyotecredit.service.ExchangeService;
 import org.springframework.data.domain.Pageable;

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/AddSupportedTradeablePayload.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
 
 public record AddSupportedTradeablePayload(long tradeableId) {
 }

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/EditExchangePayload.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
 
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/EditTradeablesData.java

@@ -1,4 +1,6 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
+
+import nl.andrewl.coyotecredit.ctl.dto.TradeableData;
 
 import java.util.List;
 

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/ExchangeAccountData.java

@@ -0,0 +1,8 @@
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
+
+import nl.andrewl.coyotecredit.ctl.dto.SimpleAccountData;
+
+public record ExchangeAccountData(
+		ExchangeData exchange,
+		SimpleAccountData account
+) {}

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/ExchangeData.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
 
 public record ExchangeData(
 		long id,

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/FullExchangeData.java

@@ -1,4 +1,6 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
+
+import nl.andrewl.coyotecredit.ctl.dto.TradeableData;
 
 import java.util.List;
 

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/InvitationData.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
 
 public record InvitationData(
 		long id,

src/main/java/nl/andrewl/coyotecredit/ctl/exchange/dto/InviteUserPayload.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl.dto;
+package nl.andrewl.coyotecredit.ctl.exchange.dto;
 
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;

src/main/java/nl/andrewl/coyotecredit/ctl/user/NotificationController.java

@@ -0,0 +1,29 @@
+package nl.andrewl.coyotecredit.ctl.user;
+
+import lombok.RequiredArgsConstructor;
+import nl.andrewl.coyotecredit.model.User;
+import nl.andrewl.coyotecredit.service.UserService;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping(path = "/userNotifications")
+@RequiredArgsConstructor
+public class NotificationController {
+	private final UserService userService;
+
+	@PostMapping(path = "/{notificationId}/dismiss")
+	public String dismiss(@PathVariable long notificationId, @AuthenticationPrincipal User user) {
+		userService.dismissNotification(user, notificationId);
+		return "redirect:/users/" + user.getId();
+	}
+
+	@PostMapping(path = "/dismissAll")
+	public String dismissAll(@AuthenticationPrincipal User user) {
+		userService.dismissAllNotifications(user);
+		return "redirect:/users/" + user.getId();
+	}
+}

src/main/java/nl/andrewl/coyotecredit/ctl/user/UserPage.java

@@ -1,4 +1,4 @@
-package nl.andrewl.coyotecredit.ctl;
+package nl.andrewl.coyotecredit.ctl.user;
 
 import lombok.RequiredArgsConstructor;
 import nl.andrewl.coyotecredit.model.User;
@@ -8,6 +8,7 @@ import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 
 @Controller

src/main/java/nl/andrewl/coyotecredit/ctl/user/dto/UserData.java

@@ -0,0 +1,13 @@
+package nl.andrewl.coyotecredit.ctl.user.dto;
+
+import nl.andrewl.coyotecredit.ctl.exchange.dto.InvitationData;
+
+import java.util.List;
+
+public record UserData (
+		long id,
+		String username,
+		String email,
+		List<InvitationData> exchangeInvitations,
+		List<UserNotificationData> newNotifications
+) {}

src/main/java/nl/andrewl/coyotecredit/ctl/user/dto/UserNotificationData.java

@@ -0,0 +1,16 @@
+package nl.andrewl.coyotecredit.ctl.user.dto;
+
+import nl.andrewl.coyotecredit.model.UserNotification;
+
+import java.time.format.DateTimeFormatter;
+
+public record UserNotificationData(
+		long id,
+		String sentAt,
+		String content,
+		boolean dismissed
+) {
+	public UserNotificationData(UserNotification n) {
+		this(n.getId(), n.getSentAt().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")) + " UTC", n.getContent(), n.isDismissed());
+	}
+}

src/main/java/nl/andrewl/coyotecredit/dao/UserNotificationRepository.java

@@ -0,0 +1,21 @@
+package nl.andrewl.coyotecredit.dao;
+
+import nl.andrewl.coyotecredit.model.User;
+import nl.andrewl.coyotecredit.model.UserNotification;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface UserNotificationRepository extends JpaRepository<UserNotification, Long> {
+	@Query("SELECT un FROM UserNotification un " +
+			"WHERE un.user = :user AND un.dismissed = FALSE " +
+			"ORDER BY un.sentAt DESC")
+	List<UserNotification> findAllNewNotifications(User user);
+
+	@Query("SELECT COUNT(un) FROM UserNotification un " +
+			"WHERE un.user = :user AND un.dismissed = FALSE")
+	long countAllNewNotifications(User user);
+}

src/main/java/nl/andrewl/coyotecredit/model/User.java

@@ -4,6 +4,7 @@ import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.Formula;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
 
@@ -35,10 +36,12 @@ public class User implements UserDetails {
 	@Column(nullable = false)
 	private String email;
 
-	@Column(nullable = false)
-	@Setter
+	@Column(nullable = false) @Setter
 	private boolean activated = false;
 
+	@Column(nullable = false) @Setter
+	private boolean admin = false;
+
 	@Column(nullable = false, updatable = false)
 	private LocalDateTime createdAt;
 
@@ -48,6 +51,11 @@ public class User implements UserDetails {
 	@OneToMany(fetch = FetchType.LAZY, mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
 	private Set<Account> accounts;
 
+	@Setter
+	private transient long newNotificationCount;
+	@Setter
+	private transient boolean hasNotifications;
+
 	public User(String username, String passwordHash, String email) {
 		this.username = username;
 		this.passwordHash = passwordHash;

src/main/java/nl/andrewl/coyotecredit/model/UserNotification.java

@@ -0,0 +1,46 @@
+package nl.andrewl.coyotecredit.model;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.*;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+
+/**
+ * Represents a notification that is shown to a user, and can be dismissed once
+ * the user has read it.
+ */
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class UserNotification {
+	public static final int MAX_LENGTH = 2048;
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+
+	@ManyToOne(optional = false, fetch = FetchType.LAZY)
+	private User user;
+
+	@Column(nullable = false, updatable = false)
+	private LocalDateTime sentAt;
+
+	@Column(nullable = false, updatable = false, length = MAX_LENGTH)
+	private String content;
+
+	@Column(nullable = false) @Setter
+	private boolean dismissed = false;
+
+	@Column @Setter
+	private LocalDateTime dismissedAt;
+
+	public UserNotification(User user, String content) {
+		this.user = user;
+		this.content = content;
+		this.sentAt = LocalDateTime.now(ZoneOffset.UTC);
+	}
+}

src/main/java/nl/andrewl/coyotecredit/service/AccountService.java

@@ -2,6 +2,7 @@ package nl.andrewl.coyotecredit.service;
 
 import lombok.RequiredArgsConstructor;
 import nl.andrewl.coyotecredit.ctl.dto.*;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.ExchangeData;
 import nl.andrewl.coyotecredit.dao.*;
 import nl.andrewl.coyotecredit.model.*;
 import nl.andrewl.coyotecredit.util.AccountNumberUtils;
@@ -30,6 +31,7 @@ public class AccountService {
 	private final TradeableRepository tradeableRepository;
 	private final TransferRepository transferRepository;
 	private final AccountValueSnapshotRepository valueSnapshotRepository;
+	private final UserNotificationRepository notificationRepository;
 
 	@Transactional(readOnly = true)
 	public List<BalanceData> getTransferData(long accountId, User user) {
@@ -86,13 +88,31 @@ public class AccountService {
 		recipientBalance.setAmount(recipientBalance.getAmount().add(amount));
 		accountRepository.save(sender);
 		accountRepository.save(recipient);
-		transferRepository.save(new Transfer(
+		Transfer t = transferRepository.save(new Transfer(
 				sender.getNumber(),
 				recipient.getNumber(),
 				tradeable,
 				amount,
 				payload.message()
 		));
+		String senderMessage = String.format("You have sent %s %s to %s (%s) from your account in %s.",
+				amount.toPlainString(),
+				tradeable.getSymbol(),
+				recipient.getNumber(),
+				recipient.getName(),
+				sender.getExchange().getName());
+		String recipientMessage = String.format("You have received %s %s from %s (%s) in your account in %s.",
+				amount.toPlainString(),
+				tradeable.getSymbol(),
+				sender.getNumber(),
+				sender.getName(),
+				recipient.getExchange().getName());
+		if (t.getMessage() != null) {
+			recipientMessage += " Message: " + t.getMessage();
+			senderMessage += " Message: " + t.getMessage();
+		}
+		notificationRepository.save(new UserNotification(sender.getUser(), senderMessage));
+		notificationRepository.save(new UserNotification(recipient.getUser(), recipientMessage));
 	}
 
 	public static record AccountData (
@@ -175,6 +195,13 @@ public class AccountService {
 			}
 		}
 		accountRepository.save(account);
+		notificationRepository.save(new UserNotification(
+				account.getUser(),
+				String.format("Your account %s in %s had its balances edited by %s.",
+						account.getNumber(),
+						account.getExchange().getName(),
+						userAccount.getName())
+		));
 	}
 
 	@Scheduled(cron = "@midnight")

src/main/java/nl/andrewl/coyotecredit/service/ExchangeService.java

@@ -2,6 +2,7 @@ package nl.andrewl.coyotecredit.service;
 
 import lombok.RequiredArgsConstructor;
 import nl.andrewl.coyotecredit.ctl.dto.*;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.*;
 import nl.andrewl.coyotecredit.dao.*;
 import nl.andrewl.coyotecredit.model.*;
 import nl.andrewl.coyotecredit.util.AccountNumberUtils;
@@ -18,7 +19,6 @@ import org.springframework.web.server.ResponseStatusException;
 
 import javax.mail.MessagingException;
 import javax.mail.internet.MimeMessage;
-import javax.persistence.criteria.Join;
 import javax.persistence.criteria.Root;
 import javax.persistence.criteria.Subquery;
 import java.math.BigDecimal;
@@ -39,6 +39,7 @@ public class ExchangeService {
 	private final AccountValueSnapshotRepository accountValueSnapshotRepository;
 	private final UserRepository userRepository;
 	private final ExchangeInvitationRepository invitationRepository;
+	private final UserNotificationRepository notificationRepository;
 	private final JavaMailSender mailSender;
 
 	@Value("${coyote-credit.base-url}")
@@ -129,6 +130,10 @@ public class ExchangeService {
 		}
 		accountValueSnapshotRepository.deleteAllByAccount(account);
 		accountRepository.delete(account);
+		notificationRepository.save(new UserNotification(
+				account.getUser(),
+				"Your account in " + exchange.getName() + " has been removed."
+		));
 	}
 
 	@Transactional(readOnly = true)
@@ -299,6 +304,10 @@ public class ExchangeService {
 			account.getBalances().add(new Balance(account, t, BigDecimal.ZERO));
 		}
 		accountRepository.save(account);
+		notificationRepository.save(new UserNotification(
+				user,
+				"Congratulations! You've just joined " + exchange.getName() + "."
+		));
 	}
 
 	@Transactional
@@ -391,6 +400,12 @@ public class ExchangeService {
 			if (bal != null) {
 				acc.getBalances().remove(bal);
 				accountRepository.save(acc);
+				notificationRepository.save(new UserNotification(
+						acc.getUser(),
+						String.format("Your balance of %s has been removed from your account in %s because the exchange no longer supports it.",
+								tradeable.getSymbol(),
+								exchange.getName())
+				));
 			}
 		}
 		exchangeRepository.save(exchange);

src/main/java/nl/andrewl/coyotecredit/service/UserService.java

@@ -1,17 +1,12 @@
 package nl.andrewl.coyotecredit.service;
 
 import lombok.RequiredArgsConstructor;
-import nl.andrewl.coyotecredit.ctl.dto.InvitationData;
+import nl.andrewl.coyotecredit.ctl.exchange.dto.InvitationData;
 import nl.andrewl.coyotecredit.ctl.dto.RegisterPayload;
-import nl.andrewl.coyotecredit.ctl.dto.UserData;
-import nl.andrewl.coyotecredit.dao.AccountRepository;
-import nl.andrewl.coyotecredit.dao.ExchangeInvitationRepository;
-import nl.andrewl.coyotecredit.dao.UserActivationTokenRepository;
-import nl.andrewl.coyotecredit.dao.UserRepository;
-import nl.andrewl.coyotecredit.model.Account;
-import nl.andrewl.coyotecredit.model.Balance;
-import nl.andrewl.coyotecredit.model.User;
-import nl.andrewl.coyotecredit.model.UserActivationToken;
+import nl.andrewl.coyotecredit.ctl.user.dto.UserData;
+import nl.andrewl.coyotecredit.ctl.user.dto.UserNotificationData;
+import nl.andrewl.coyotecredit.dao.*;
+import nl.andrewl.coyotecredit.model.*;
 import nl.andrewl.coyotecredit.util.AccountNumberUtils;
 import nl.andrewl.coyotecredit.util.StringUtils;
 import org.springframework.beans.factory.annotation.Value;
@@ -40,6 +35,7 @@ public class UserService {
 	private final AccountRepository accountRepository;
 	private final UserActivationTokenRepository activationTokenRepository;
 	private final ExchangeInvitationRepository exchangeInvitationRepository;
+	private final UserNotificationRepository notificationRepository;
 	private final JavaMailSender mailSender;
 	private final PasswordEncoder passwordEncoder;
 
@@ -60,7 +56,10 @@ public class UserService {
 			exchangeInvitations.add(new InvitationData(invitation.getId(), invitation.getExchange().getId(), invitation.getExchange().getName()));
 		}
 		exchangeInvitations.sort(Comparator.comparing(InvitationData::id));
-		return new UserData(user.getId(), user.getUsername(), user.getEmail(), exchangeInvitations);
+		var notifications = notificationRepository.findAllNewNotifications(user).stream()
+				.map(UserNotificationData::new)
+				.toList();
+		return new UserData(user.getId(), user.getUsername(), user.getEmail(), exchangeInvitations, notifications);
 	}
 
 	@Transactional
@@ -140,4 +139,26 @@ public class UserService {
 	public void removeExpiredActivationTokens() {
 		activationTokenRepository.deleteAllByExpiresAtBefore(LocalDateTime.now(ZoneOffset.UTC));
 	}
+
+	@Transactional
+	public void dismissNotification(User user, long notificationId) {
+		UserNotification n = notificationRepository.findById(notificationId)
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+		if (!n.getUser().getId().equals(user.getId())) {
+			throw new ResponseStatusException(HttpStatus.NOT_FOUND);
+		}
+		n.setDismissed(true);
+		n.setDismissedAt(LocalDateTime.now(ZoneOffset.UTC));
+		notificationRepository.save(n);
+	}
+
+	@Transactional
+	public void dismissAllNotifications(User user) {
+		var notifications = notificationRepository.findAllNewNotifications(user);
+		for (var n : notifications) {
+			n.setDismissed(true);
+			n.setDismissedAt(LocalDateTime.now(ZoneOffset.UTC));
+		}
+		notificationRepository.saveAll(notifications);
+	}
 }

src/main/resources/application-development.properties

@@ -4,6 +4,7 @@ spring.datasource.password=tester
 
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.open-in-view=false
+spring.jpa.show-sql=false
 
 spring.mail.host=127.0.0.1
 spring.mail.port=1025

src/main/resources/static/js/transfer.js

@@ -0,0 +1,19 @@
+const tradeableSelect = document.getElementById("tradeableSelect");
+const valueInput = document.getElementById("amountInput");
+
+tradeableSelect.addEventListener("change", onSelectChanged);
+
+function onSelectChanged() {
+    valueInput.value = null;
+    const option = tradeableSelect.options[tradeableSelect.selectedIndex];
+    const type = option.dataset.type;
+    const balance = Number(option.dataset.amount);
+    valueInput.setAttribute("max", "" + balance);
+    if (type === "STOCK") {
+        valueInput.setAttribute("step", 1);
+        valueInput.setAttribute("min", 1);
+    } else {
+        valueInput.setAttribute("step", 0.0000000001);
+        valueInput.setAttribute("min", 0.0000000001);
+    }
+}

src/main/resources/templates/account/edit_balances.html

@@ -10,7 +10,15 @@
     <form th:action="@{/accounts/{aId}/editBalances(aId=${accountId})}" th:method="post">
         <div class="mb-3" th:each="bal, iter : ${account.balances()}">
             <label th:for="${'tradeable-' + bal.id()}" class="form-label" th:text="${bal.symbol()}"></label>
-            <input type="number" min="0" th:value="${bal.amount()}" th:name="${'tradeable-' + bal.id()}" class="form-control" required/>
+            <input
+                    class="form-control"
+                    th:name="${'tradeable-' + bal.id()}"
+                    th:value="${bal.amount()}"
+                    type="number"
+                    min="0"
+                    th:step="${bal.type().equals('STOCK') ? '1' : '0.0000000001'}"
+                    required
+            />
         </div>
         <button type="submit" class="btn btn-success">Submit</button>
     </form>

src/main/resources/templates/account/transfer.html

@@ -20,10 +20,13 @@
         <div class="mb-3">
             <label for="tradeableSelect" class="form-label">Asset</label>
             <select class="form-select" id="tradeableSelect" name="tradeableId" required>
+                <option value="" selected disabled hidden>Choose something to send</option>
                 <option
                         th:each="b : ${balances}"
                         th:text="${b.symbol() + ' - Balance ' + b.amount()}"
                         th:value="${b.id()}"
+                        th:data-amount="${b.amount()}"
+                        th:data-type="${b.type()}"
                 ></option>
             </select>
         </div>
@@ -48,4 +51,6 @@
             Warning! All transfers are final, and cannot be reversed.
         </p>
     </form>
+
+    <script src="/static/js/transfer.js"></script>
 </div>

src/main/resources/templates/fragment/header.html

@@ -27,7 +27,14 @@
                     <a class="nav-link" th:href="@{/exchanges}">Exchanges</a>
                 </li>
                 <li class="nav-item">
-                    <a class="nav-link" th:href="@{/users/{id}(id=${#authentication.getPrincipal().getId()})}">My Profile</a>
+                    <a class="nav-link position-relative" th:href="@{/users/{id}(id=${#authentication.getPrincipal().getId()})}">
+                        My Profile
+                        <span
+                            th:if="${#authentication.getPrincipal().isHasNotifications()}"
+                            th:text="${#authentication.getPrincipal().getNewNotificationCount()}"
+                            class="badge rounded-pill bg-danger"
+                        ></span>
+                    </a>
                 </li>
             </ul>
             <form class="d-flex" th:action="@{/logout}" th:method="post">

src/main/resources/templates/user.html

@@ -20,6 +20,31 @@
         </tbody>
     </table>
 
+    <div class="card text-white bg-dark mb-3">
+        <div class="card-body">
+            <div class="card-title d-flex justify-content-between">
+                <h5>Notifications</h5>
+                <form th:action="@{/userNotifications/dismissAll}" method="post" class="float-end">
+                    <button type="submit" class="btn btn-sm btn-secondary">Dismiss All</button>
+                </form>
+            </div>
+        </div>
+        <ul class="list-group list-group-flush">
+            <li class="list-group-item list-group-item-dark" th:each="n : ${user.newNotifications()}">
+                <div class="d-flex justify-content-between">
+                    <small th:text="${n.sentAt()}"></small>
+                    <form th:action="@{/userNotifications/{nId}/dismiss(nId=${n.id()})}" method="post" class="float-end">
+                        <button type="submit" class="btn btn-sm btn-secondary">Dismiss</button>
+                    </form>
+                </div>
+                <p th:text="${n.content()}"></p>
+            </li>
+            <li class="list-group-item list-group-item-dark" th:if="${user.newNotifications().isEmpty()}">
+                You don't have any new notifications.
+            </li>
+        </ul>
+    </div>
+
     <div class="card text-white bg-dark mb-3" th:if="${!user.exchangeInvitations().isEmpty()}">
         <div class="card-body">
             <h5 class="card-title">Exchange Invitations</h5>