Added transfer, more improvements.

.gitignore

@@ -31,3 +31,5 @@ build/
 
 ### VS Code ###
 .vscode/
+
+/config/

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

@@ -0,0 +1,9 @@
+package nl.andrewl.coyotecredit.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+@Configuration
+@EnableScheduling
+public class SchedulingConfig {
+}

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

@@ -26,7 +26,7 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 		http
 			.authorizeRequests()
 				.antMatchers(
-						"/login", "/login/processing", "/static/**"
+						"/login*", "/login/processing", "/register*", "/activate*", "/static/**"
 				).permitAll()
 				.and()
 			.authorizeRequests().anyRequest().authenticated()

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

@@ -1,7 +1,7 @@
 package nl.andrewl.coyotecredit.ctl;
 
-import com.fasterxml.jackson.databind.node.ObjectNode;
 import lombok.RequiredArgsConstructor;
+import nl.andrewl.coyotecredit.ctl.dto.TransferPayload;
 import nl.andrewl.coyotecredit.model.User;
 import nl.andrewl.coyotecredit.service.AccountService;
 import org.springframework.http.HttpStatus;
@@ -12,8 +12,6 @@ import org.springframework.util.MultiValueMap;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.server.ResponseStatusException;
 
-import java.util.Map;
-
 @Controller
 @RequestMapping(path = "/accounts/{accountId}")
 @RequiredArgsConstructor
@@ -44,4 +42,16 @@ public class AccountPage {
 		accountService.editBalances(accountId, user, paramMap);
 		return "redirect:/accounts/" + accountId;
 	}
+
+	@GetMapping(path = "/transfer")
+	public String getTransferPage(Model model, @PathVariable long accountId, @AuthenticationPrincipal User user) {
+		model.addAttribute("balances", accountService.getTransferData(accountId, user));
+		return "account/transfer";
+	}
+
+	@PostMapping(path = "/transfer")
+	public String postTransfer(@PathVariable long accountId, @ModelAttribute TransferPayload payload, @AuthenticationPrincipal User user) {
+		accountService.transfer(accountId, user, payload);
+		return "redirect:/accounts/" + accountId;
+	}
 }

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

@@ -10,42 +10,48 @@ import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.*;
 
 @Controller
-@RequestMapping(path = "/exchanges/{exchangeId}")
+@RequestMapping(path = "/exchanges")
 @RequiredArgsConstructor
-public class ExchangePage {
+public class ExchangeController {
 	private final ExchangeService exchangeService;
 
 	@GetMapping
-	public String get(Model model, @PathVariable long exchangeId, @AuthenticationPrincipal User user) {
-		model.addAttribute("exchange", exchangeService.getData(exchangeId, user));
-		return "exchange";
+	public String getExchanges(Model model, @AuthenticationPrincipal User user) {
+		model.addAttribute("exchangeData", exchangeService.getExchanges(user));
+		return "exchange/exchanges";
 	}
 
-	@GetMapping(path = "/accounts")
+	@GetMapping(path = "/{exchangeId}")
+	public String get(Model model, @PathVariable long exchangeId, @AuthenticationPrincipal User user) {
+		model.addAttribute("exchange", exchangeService.getData(exchangeId, user));
+		return "exchange/exchange";
+	}
+
+	@GetMapping(path = "/{exchangeId}/accounts")
 	public String getAccountsPage(Model model, @PathVariable long exchangeId, @AuthenticationPrincipal User user) {
 		model.addAttribute("accounts", exchangeService.getAccounts(exchangeId, user));
 		return "exchange/accounts";
 	}
 
-	@GetMapping(path = "/addAccount")
+	@GetMapping(path = "/{exchangeId}/addAccount")
 	public String getAddAccountPage(@PathVariable long exchangeId, @AuthenticationPrincipal User user) {
 		exchangeService.ensureAdminAccount(exchangeId, user);
 		return "exchange/addAccount";
 	}
 
-	@PostMapping(path = "/addAccount")
+	@PostMapping(path = "/{exchangeId}/addAccount")
 	public String postAddAcount(@PathVariable long exchangeId, @AuthenticationPrincipal User user, @ModelAttribute AddAccountPayload payload) {
 		long accountId = exchangeService.addAccount(exchangeId, user, payload);
 		return "redirect:/accounts/" + accountId;
 	}
 
-	@GetMapping(path = "/removeAccount/{accountId}")
+	@GetMapping(path = "/{exchangeId}/removeAccount/{accountId}")
 	public String getRemoveAccountPage(@PathVariable long exchangeId, @PathVariable long accountId, @AuthenticationPrincipal User user) {
 		exchangeService.ensureAdminAccount(exchangeId, user);
 		return "exchange/removeAccount";
 	}
 
-	@PostMapping(path = "/removeAccount/{accountId}")
+	@PostMapping(path = "/{exchangeId}/removeAccount/{accountId}")
 	public String postRemoveAccount(@PathVariable long exchangeId, @PathVariable long accountId, @AuthenticationPrincipal User user) {
 		exchangeService.removeAccount(exchangeId, accountId, user);
 		return "redirect:/exchanges/" + exchangeId + "/accounts";

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

@@ -1,14 +0,0 @@
-package nl.andrewl.coyotecredit.ctl;
-
-import org.springframework.stereotype.Controller;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-
-@Controller
-@RequestMapping(path = "/login")
-public class LoginPage {
-	@GetMapping
-	public String get() {
-		return "login";
-	}
-}

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

@@ -0,0 +1,38 @@
+package nl.andrewl.coyotecredit.ctl;
+
+import lombok.RequiredArgsConstructor;
+import nl.andrewl.coyotecredit.ctl.dto.RegisterPayload;
+import nl.andrewl.coyotecredit.service.UserService;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+@Controller
+@RequiredArgsConstructor
+public class PublicPageController {
+	private final UserService userService;
+
+	@GetMapping(path = "/login")
+	public String getLoginPage() {
+		return "public/login";
+	}
+
+	@GetMapping(path = "/register")
+	public String getRegisterPage() {
+		return "public/register";
+	}
+
+	@PostMapping(path = "/register")
+	public String postRegister(@ModelAttribute RegisterPayload payload) {
+		userService.registerUser(payload);
+		return "redirect:/login";
+	}
+
+	@GetMapping(path = "/activate")
+	public String activateAccount(@RequestParam(name = "token") String token) {
+		userService.activateUser(token);
+		return "redirect:/login";
+	}
+}

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

@@ -2,6 +2,7 @@ package nl.andrewl.coyotecredit.ctl.dto;
 
 public record AddAccountPayload(
 		String name,
+		String email,
 		String username,
 		String password
 ) {}

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

@@ -3,5 +3,6 @@ package nl.andrewl.coyotecredit.ctl.dto;
 public record BalanceData(
 	long id,
 	String symbol,
+	String type,
 	String amount
 ) {}

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

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

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

@@ -10,7 +10,7 @@ public record FullExchangeData (
 		String name,
 		TradeableData primaryTradeable,
 		List<TradeableData> supportedTradeables,
-		// Account info
-		boolean accountAdmin
-) {
-}
+		// Account info that's needed for determining if it's possible to do some actions.
+		boolean accountAdmin,
+		long accountId
+) {}

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

@@ -0,0 +1,7 @@
+package nl.andrewl.coyotecredit.ctl.dto;
+
+public record RegisterPayload (
+		String username,
+		String email,
+		String password
+) {}

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

@@ -2,20 +2,26 @@ package nl.andrewl.coyotecredit.ctl.dto;
 
 import nl.andrewl.coyotecredit.model.Tradeable;
 
+import java.text.DecimalFormat;
+
 public record TradeableData(
 		long id,
 		String symbol,
 		String type,
 		String marketPriceUsd,
+		String formattedPriceUsd,
 		String name,
 		String description
 ) {
+	public static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("#,##0.00");
+
 	public TradeableData(Tradeable t) {
 		this(
 				t.getId(),
 				t.getSymbol(),
 				t.getType().name(),
 				t.getMarketPriceUsd().toPlainString(),
+				DECIMAL_FORMAT.format(t.getMarketPriceUsd()),
 				t.getName(),
 				t.getDescription()
 		);

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

@@ -0,0 +1,8 @@
+package nl.andrewl.coyotecredit.ctl.dto;
+
+public record TransferPayload (
+		String recipientNumber,
+		String amount,
+		long tradeableId,
+		String message
+) {}

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

@@ -2,5 +2,6 @@ package nl.andrewl.coyotecredit.ctl.dto;
 
 public record UserData (
 		long id,
-		String username
+		String username,
+		String email
 ) {}

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

@@ -4,6 +4,9 @@ import nl.andrewl.coyotecredit.model.Tradeable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
+
 @Repository
 public interface TradeableRepository extends JpaRepository<Tradeable, Long> {
+	List<Tradeable> findAllByExchangeNull();
 }

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

@@ -0,0 +1,18 @@
+package nl.andrewl.coyotecredit.dao;
+
+import nl.andrewl.coyotecredit.model.Transfer;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface TransferRepository extends JpaRepository<Transfer, Long> {
+	@Query(
+			"SELECT t FROM Transfer t " +
+			"WHERE t.senderNumber = :accountNumber OR t.recipientNumber = :accountNumber " +
+			"ORDER BY t.timestamp DESC"
+	)
+	Page<Transfer> findAllForAccount(String accountNumber, Pageable pageable);
+}

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

@@ -0,0 +1,12 @@
+package nl.andrewl.coyotecredit.dao;
+
+import nl.andrewl.coyotecredit.model.UserActivationToken;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDateTime;
+
+@Repository
+public interface UserActivationTokenRepository extends JpaRepository<UserActivationToken, String> {
+	void deleteAllByExpiresAtBefore(LocalDateTime time);
+}

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

@@ -9,4 +9,5 @@ import java.util.Optional;
 @Repository
 public interface UserRepository extends JpaRepository<User, Long> {
 	Optional<User> findByUsername(String username);
+	boolean existsByUsername(String username);
 }

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

@@ -1,20 +0,0 @@
-package nl.andrewl.coyotecredit.model;
-
-import lombok.AccessLevel;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-
-import javax.persistence.Entity;
-import javax.persistence.FetchType;
-import javax.persistence.ManyToOne;
-
-@Entity
-@NoArgsConstructor(access = AccessLevel.PROTECTED)
-@Getter
-public class CustomTradeable extends Tradeable {
-	/**
-	 * The exchange that the tradeable belongs to.
-	 */
-	@ManyToOne(optional = false, fetch = FetchType.LAZY)
-	private Exchange exchange;
-}

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

@@ -47,7 +47,7 @@ public class Exchange {
 	 * The set of custom tradeables created specifically for use in this exchange.
 	 */
 	@OneToMany(mappedBy = "exchange", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
-	private Set<CustomTradeable> customTradeables;
+	private Set<Tradeable> customTradeables;
 
 	/**
 	 * The set of accounts that are registered with this exchange.

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

@@ -3,6 +3,7 @@ package nl.andrewl.coyotecredit.model;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import lombok.Setter;
 
 import javax.persistence.*;
 import java.math.BigDecimal;
@@ -29,6 +30,7 @@ public class Tradeable {
 	private TradeableType type;
 
 	@Column(nullable = false, precision = 24, scale = 10)
+	@Setter
 	private BigDecimal marketPriceUsd = new BigDecimal(1);
 
 	@Column(nullable = false)
@@ -37,12 +39,19 @@ public class Tradeable {
 	@Column
 	private String description;
 
-	public Tradeable(String symbol, TradeableType type, String name, String description, BigDecimal marketPriceUsd) {
+	/**
+	 * The exchange that this tradeable belongs to, if any.
+	 */
+	@ManyToOne(fetch = FetchType.LAZY)
+	private Exchange exchange;
+
+	public Tradeable(String symbol, TradeableType type, String name, String description, BigDecimal marketPriceUsd, Exchange exchange) {
 		this.symbol = symbol;
 		this.type = type;
 		this.name = name;
 		this.description = description;
 		this.marketPriceUsd = marketPriceUsd;
+		this.exchange = exchange;
 	}
 
 	@Override

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

@@ -0,0 +1,49 @@
+package nl.andrewl.coyotecredit.model;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+
+/**
+ * Represents a transfer of funds from one account to another.
+ */
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class Transfer {
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+
+	@Column(nullable = false, updatable = false)
+	private LocalDateTime timestamp;
+
+	@Column(nullable = false)
+	private String senderNumber;
+
+	@Column(nullable = false)
+	private String recipientNumber;
+
+	@ManyToOne(optional = false, fetch = FetchType.EAGER)
+	private Tradeable tradeable;
+
+	@Column(nullable = false, precision = 24, scale = 10)
+	private BigDecimal amount;
+
+	@Column(length = 1024)
+	private String message;
+
+	public Transfer(String sender, String recipient, Tradeable tradeable, BigDecimal amount, String message) {
+		this.senderNumber = sender;
+		this.recipientNumber = recipient;
+		this.tradeable = tradeable;
+		this.amount = amount;
+		this.message = message;
+		this.timestamp = LocalDateTime.now(ZoneOffset.UTC);
+	}
+}

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

@@ -3,10 +3,13 @@ package nl.andrewl.coyotecredit.model;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import lombok.Setter;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
 
 import javax.persistence.*;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashSet;
@@ -29,15 +32,27 @@ public class User implements UserDetails {
 	@Column(nullable = false)
 	private String passwordHash;
 
+	@Column(nullable = false)
+	private String email;
+
+	@Column(nullable = false)
+	@Setter
+	private boolean activated = false;
+
+	@Column(nullable = false, updatable = false)
+	private LocalDateTime createdAt;
+
 	/**
 	 * The set of accounts this user has.
 	 */
 	@OneToMany(fetch = FetchType.LAZY, mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
 	private Set<Account> accounts;
 
-	public User(String username, String passwordHash) {
+	public User(String username, String passwordHash, String email) {
 		this.username = username;
 		this.passwordHash = passwordHash;
+		this.email = email;
+		this.createdAt = LocalDateTime.now(ZoneOffset.UTC);
 		this.accounts = new HashSet<>();
 	}
 
@@ -75,6 +90,6 @@ public class User implements UserDetails {
 
 	@Override
 	public boolean isEnabled() {
-		return true;
+		return this.activated;
 	}
 }

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

@@ -0,0 +1,32 @@
+package nl.andrewl.coyotecredit.model;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.time.LocalDateTime;
+
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class UserActivationToken {
+	@Id
+	@Column(nullable = false, unique = true, updatable = false)
+	private String token;
+
+	@ManyToOne(optional = false, fetch = FetchType.EAGER)
+	private User user;
+
+	/**
+	 * The time at which this token expires, in UTC.
+	 */
+	@Column(nullable = false)
+	private LocalDateTime expiresAt;
+
+	public UserActivationToken(String token, User user, LocalDateTime expiresAt) {
+		this.token = token;
+		this.user = user;
+		this.expiresAt = expiresAt;
+	}
+}

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

@@ -1,17 +1,12 @@
 package nl.andrewl.coyotecredit.service;
 
 import lombok.RequiredArgsConstructor;
-import nl.andrewl.coyotecredit.ctl.dto.BalanceData;
-import nl.andrewl.coyotecredit.ctl.dto.ExchangeData;
-import nl.andrewl.coyotecredit.ctl.dto.FullAccountData;
-import nl.andrewl.coyotecredit.ctl.dto.TransactionData;
+import nl.andrewl.coyotecredit.ctl.dto.*;
 import nl.andrewl.coyotecredit.dao.AccountRepository;
 import nl.andrewl.coyotecredit.dao.TradeableRepository;
 import nl.andrewl.coyotecredit.dao.TransactionRepository;
-import nl.andrewl.coyotecredit.model.Account;
-import nl.andrewl.coyotecredit.model.Balance;
-import nl.andrewl.coyotecredit.model.Tradeable;
-import nl.andrewl.coyotecredit.model.User;
+import nl.andrewl.coyotecredit.dao.TransferRepository;
+import nl.andrewl.coyotecredit.model.*;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
@@ -29,6 +24,61 @@ public class AccountService {
 	private final AccountRepository accountRepository;
 	private final TransactionRepository transactionRepository;
 	private final TradeableRepository tradeableRepository;
+	private final TransferRepository transferRepository;
+
+	@Transactional(readOnly = true)
+	public List<BalanceData> getTransferData(long accountId, User user) {
+		Account account = accountRepository.findById(accountId)
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+		if (!account.getUser().getId().equals(user.getId())) {
+			throw new ResponseStatusException(HttpStatus.NOT_FOUND);
+		}
+		return account.getBalances().stream()
+				.filter(b -> b.getAmount().compareTo(BigDecimal.ZERO) > 0)
+				.map(b -> new BalanceData(
+						b.getTradeable().getId(),
+						b.getTradeable().getSymbol(),
+						b.getTradeable().getType().name(),
+						b.getAmount().toPlainString()
+				))
+				.sorted(Comparator.comparing(BalanceData::symbol))
+				.toList();
+	}
+
+	@Transactional
+	public void transfer(long accountId, User user, TransferPayload payload) {
+		Account sender = accountRepository.findById(accountId)
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+		if (!sender.getUser().getId().equals(user.getId())) {
+			throw new ResponseStatusException(HttpStatus.NOT_FOUND);
+		}
+		Account recipient = accountRepository.findByNumber(payload.recipientNumber())
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.BAD_REQUEST, "Unknown recipient."));
+		Tradeable tradeable = tradeableRepository.findById(payload.tradeableId())
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.BAD_REQUEST, "Unknown tradeable asset."));
+		BigDecimal amount = new BigDecimal(payload.amount());
+		if (amount.compareTo(BigDecimal.ZERO) <= 0) throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Invalid amount. Should be positive.");
+		Balance senderBalance = sender.getBalanceForTradeable(tradeable);
+		if (senderBalance == null || senderBalance.getAmount().compareTo(amount) < 0) {
+			throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Not enough funds to transfer.");
+		}
+		Balance recipientBalance = recipient.getBalanceForTradeable(tradeable);
+		if (recipientBalance == null) {
+			recipientBalance = new Balance(recipient, tradeable, BigDecimal.ZERO);
+			recipient.getBalances().add(recipientBalance);
+		}
+		senderBalance.setAmount(senderBalance.getAmount().subtract(amount));
+		recipientBalance.setAmount(recipientBalance.getAmount().add(amount));
+		accountRepository.save(sender);
+		accountRepository.save(recipient);
+		transferRepository.save(new Transfer(
+				sender.getNumber(),
+				recipient.getNumber(),
+				tradeable,
+				amount,
+				payload.message()
+		));
+	}
 
 	public static record AccountData (
 			long id,
@@ -71,10 +121,15 @@ public class AccountService {
 						account.getExchange().getPrimaryTradeable().getSymbol()
 				),
 				account.getBalances().stream()
-						.map(b -> new BalanceData(b.getTradeable().getId(), b.getTradeable().getSymbol(), b.getAmount().toPlainString()))
+						.map(b -> new BalanceData(
+								b.getTradeable().getId(),
+								b.getTradeable().getSymbol(),
+								b.getTradeable().getType().name(),
+								b.getAmount().toPlainString()
+						))
 						.sorted(Comparator.comparing(BalanceData::symbol))
 						.toList(),
-				account.getTotalBalance().toPlainString(),
+				TradeableData.DECIMAL_FORMAT.format(account.getTotalBalance()),
 				transactionData
 		);
 	}

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

@@ -45,7 +45,8 @@ public class ExchangeService {
 						.map(TradeableData::new)
 						.sorted(Comparator.comparing(TradeableData::symbol))
 						.toList(),
-				account.isAdmin()
+				account.isAdmin(),
+				account.getId()
 		);
 	}
 
@@ -91,7 +92,7 @@ public class ExchangeService {
 		if (!account.isAdmin()) {
 			throw new ResponseStatusException(HttpStatus.NOT_FOUND);
 		}
-		User u = userRepository.save(new User(payload.username(), passwordEncoder.encode(payload.password())));
+		User u = userRepository.save(new User(payload.username(), passwordEncoder.encode(payload.password()), payload.email()));
 		Account a = accountRepository.save(new Account(
 				AccountNumberUtils.generate(),
 				u,
@@ -188,4 +189,15 @@ public class ExchangeService {
 		Transaction tx = new Transaction(account.getNumber(), exchange, from, fromValue, to, toValue, LocalDateTime.now(ZoneOffset.UTC));
 		transactionRepository.save(tx);
 	}
+
+	@Transactional(readOnly = true)
+	public List<ExchangeAccountData> getExchanges(User user) {
+		return accountRepository.findAllByUser(user).stream()
+				.map(a -> new ExchangeAccountData(
+						new ExchangeData(a.getExchange().getId(), a.getExchange().getName(), a.getExchange().getPrimaryTradeable().getSymbol()),
+						new SimpleAccountData(a.getId(), a.getNumber(), a.getName(), a.isAdmin(), TradeableData.DECIMAL_FORMAT.format(a.getTotalBalance()))
+				))
+				.sorted(Comparator.comparing(d -> d.exchange().name()))
+				.toList();
+	}
 }

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

@@ -0,0 +1,155 @@
+package nl.andrewl.coyotecredit.service;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import nl.andrewl.coyotecredit.dao.TradeableRepository;
+import nl.andrewl.coyotecredit.model.Tradeable;
+import nl.andrewl.coyotecredit.model.TradeableType;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.LocalDate;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class TradeableUpdateService {
+	private final TradeableRepository tradeableRepository;
+
+	private final HttpClient httpClient = HttpClient.newHttpClient();
+	private final ObjectMapper objectMapper = new ObjectMapper();
+	private final ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
+
+	@Value("${coyote-credit.polygon.api-key}")
+	private String polygonApiKey;
+	private static final int POLYGON_API_TIMEOUT = 15;
+
+	@Scheduled(cron = "@midnight")
+	public void updatePublicTradeables() {
+		List<Tradeable> publicTradeables = tradeableRepository.findAllByExchangeNull();
+		long delay = 5;
+		for (var tradeable : publicTradeables) {
+			// Special case of ignoring USD as the universal transfer currency.
+			if (tradeable.getSymbol().equals("USD")) continue;
+			executorService.schedule(() -> updateTradeable(tradeable), delay, TimeUnit.SECONDS);
+			delay += POLYGON_API_TIMEOUT;
+		}
+	}
+
+	private void updateTradeable(Tradeable tradeable) {
+		BigDecimal updatedValue = null;
+		if (tradeable.getType().equals(TradeableType.STOCK)) {
+			updatedValue = fetchStockClosePrice(tradeable.getSymbol());
+		} else if (tradeable.getType().equals(TradeableType.CRYPTO)) {
+			updatedValue = fetchCryptoClosePrice(tradeable.getSymbol());
+		} else if (tradeable.getType().equals(TradeableType.FIAT)) {
+			updatedValue = fetchForexClosePrice(tradeable.getSymbol());
+		}
+		if (updatedValue != null) {
+			log.info(
+					"Updating market price for tradeable {} ({}, {}) from {} to {}.",
+					tradeable.getId(),
+					tradeable.getSymbol(),
+					tradeable.getName(),
+					tradeable.getMarketPriceUsd().toPlainString(),
+					updatedValue.toPlainString()
+			);
+			tradeable.setMarketPriceUsd(updatedValue);
+			tradeableRepository.save(tradeable);
+		}
+	}
+
+	private BigDecimal fetchStockClosePrice(String symbol) {
+		String url = String.format("https://api.polygon.io/v2/aggs/ticker/%s/prev?adjusted=true", symbol);
+		HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+				.GET()
+				.header("Authorization", "Bearer " + polygonApiKey)
+				.build();
+		try {
+			HttpResponse<byte[]> response = httpClient.send(request, HttpResponse.BodyHandlers.ofByteArray());
+			if (response.statusCode() == 200) {
+				ObjectNode data = objectMapper.readValue(response.body(), ObjectNode.class);
+				JsonNode resultsCount = data.get("resultsCount");
+				if (resultsCount != null && resultsCount.isIntegralNumber() && resultsCount.asInt() > 0) {
+					String closePriceText = data.withArray("results").get(0).get("c").asText();
+					return new BigDecimal(closePriceText);
+				} else {
+					throw new IOException("No results were returned.");
+				}
+			} else {
+				throw new IOException("Request returned a non-200 status: " + response.statusCode());
+			}
+		} catch (IOException | InterruptedException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	private BigDecimal fetchCryptoClosePrice(String symbol) {
+		String date = LocalDate.now(ZoneOffset.UTC).minusDays(1).format(DateTimeFormatter.ISO_LOCAL_DATE);
+		String url = String.format("https://api.polygon.io/v1/open-close/crypto/%s/USD/%s?adjusted=true", symbol, date);
+		HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+				.GET()
+				.header("Authorization", "Bearer " + polygonApiKey)
+				.build();
+		try {
+			HttpResponse<byte[]> response = httpClient.send(request, HttpResponse.BodyHandlers.ofByteArray());
+			if (response.statusCode() == 200) {
+				ObjectNode data = objectMapper.readValue(response.body(), ObjectNode.class);
+				JsonNode close = data.get("close");
+				if (close != null && close.isNumber()) {
+					return new BigDecimal(close.asText());
+				} else {
+					throw new IOException("No data available.");
+				}
+			} else {
+				throw new IOException("Request returned a non-200 status: " + response.statusCode());
+			}
+		} catch (IOException | InterruptedException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	private BigDecimal fetchForexClosePrice(String symbol) {
+		String url = String.format("https://api.polygon.io/v2/aggs/ticker/C:%sUSD/prev?adjusted=true", symbol);
+		HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+				.GET()
+				.header("Authorization", "Bearer " + polygonApiKey)
+				.build();
+		try {
+			HttpResponse<byte[]> response = httpClient.send(request, HttpResponse.BodyHandlers.ofByteArray());
+			if (response.statusCode() == 200) {
+				ObjectNode data = objectMapper.readValue(response.body(), ObjectNode.class);
+				JsonNode resultsCount = data.get("resultsCount");
+				if (resultsCount != null && resultsCount.isIntegralNumber() && resultsCount.asInt() > 0) {
+					String closePriceText = data.withArray("results").get(0).get("c").asText();
+					return new BigDecimal(closePriceText);
+				} else {
+					throw new IOException("No results were returned.");
+				}
+			} else {
+				throw new IOException("Request returned a non-200 status: " + response.statusCode());
+			}
+		} catch (IOException | InterruptedException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+}

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

@@ -1,20 +1,40 @@
 package nl.andrewl.coyotecredit.service;
 
 import lombok.RequiredArgsConstructor;
+import nl.andrewl.coyotecredit.ctl.dto.RegisterPayload;
 import nl.andrewl.coyotecredit.ctl.dto.UserData;
+import nl.andrewl.coyotecredit.dao.UserActivationTokenRepository;
 import nl.andrewl.coyotecredit.dao.UserRepository;
 import nl.andrewl.coyotecredit.model.User;
+import nl.andrewl.coyotecredit.model.UserActivationToken;
+import nl.andrewl.coyotecredit.util.StringUtils;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.server.ResponseStatusException;
 
+import javax.mail.MessagingException;
+import javax.mail.internet.MimeMessage;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+
 @Service
 @RequiredArgsConstructor
 public class UserService {
 	private final UserRepository userRepository;
+	private final UserActivationTokenRepository activationTokenRepository;
+	private final JavaMailSender mailSender;
+	private final PasswordEncoder passwordEncoder;
 
-	@Transactional
+	@Value("${coyote-credit.base-url}")
+	private String baseUrl;
+
+	@Transactional(readOnly = true)
 	public UserData getUser(long userId, User requestingUser) {
 		User user;
 		if (requestingUser.getId().equals(userId)) {
@@ -22,6 +42,62 @@ public class UserService {
 		} else {
 			user = userRepository.findById(userId).orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
 		}
-		return new UserData(user.getId(), user.getUsername());
+		return new UserData(user.getId(), user.getUsername(), user.getEmail());
+	}
+
+	@Transactional
+	public void registerUser(RegisterPayload payload) {
+		if (userRepository.existsByUsername(payload.username())) {
+			throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Username is already taken.");
+		}
+		User user = new User(payload.username(), passwordEncoder.encode(payload.password()), payload.email());
+		user = userRepository.save(user);
+		String token = StringUtils.random(64);
+		LocalDateTime expiresAt = LocalDateTime.now(ZoneOffset.UTC).plusHours(24);
+		UserActivationToken activationToken = new UserActivationToken(token, user, expiresAt);
+		activationTokenRepository.save(activationToken);
+		try {
+			sendActivationEmail(activationToken);
+		} catch (MessagingException e) {
+			throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, "Could not send activation email.");
+		}
+	}
+
+	@Transactional
+	public void activateUser(String tokenString) {
+		UserActivationToken token = activationTokenRepository.findById(tokenString)
+				.orElseThrow(() -> new ResponseStatusException(HttpStatus.BAD_REQUEST, "Invalid activation code."));
+		if (token.getExpiresAt().isBefore(LocalDateTime.now(ZoneOffset.UTC))) {
+			throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Activation code is expired.");
+		}
+		token.getUser().setActivated(true);
+		activationTokenRepository.delete(token);
+		userRepository.save(token.getUser());
+	}
+
+	private void sendActivationEmail(UserActivationToken token) throws MessagingException {
+		MimeMessage msg = mailSender.createMimeMessage();
+		MimeMessageHelper helper = new MimeMessageHelper(msg);
+		helper.setFrom("Coyote Credit <noreply@coyote-credit.com>");
+		helper.setTo(token.getUser().getEmail());
+		helper.setSubject("Activate Your Account");
+		String activationUrl = baseUrl + "/activate?token=" + token.getToken();
+		helper.setText(String.format(
+				"""
+				<p>In order to complete your account registration for Coyote Credit,
+				please follow this link:</p>
+				<a href="%s">%s</a>.
+				<p>Note that this link will expire in 24 hours.</p>
+				<p>If you did not register for an account, or you are unaware of
+				someone registering on your behalf, you may safely ignore this
+				email.</p>""",
+				activationUrl, activationUrl
+		), true);
+		mailSender.send(msg);
+	}
+
+	@Scheduled(cron = "@midnight")
+	public void removeExpiredActivationTokens() {
+		activationTokenRepository.deleteAllByExpiresAtBefore(LocalDateTime.now(ZoneOffset.UTC));
 	}
 }

src/main/java/nl/andrewl/coyotecredit/util/StringUtils.java

@@ -0,0 +1,17 @@
+package nl.andrewl.coyotecredit.util;
+
+import java.security.SecureRandom;
+import java.util.Random;
+
+public class StringUtils {
+	private static final String ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";
+
+	public static String random(int length) {
+		StringBuilder sb = new StringBuilder(length);
+		Random rand = new SecureRandom();
+		for (int i = 0; i < length; i++) {
+			sb.append(ALPHABET.charAt(rand.nextInt(ALPHABET.length())));
+		}
+		return sb.toString();
+	}
+}

src/main/resources/application-development.properties

@@ -4,3 +4,8 @@ spring.datasource.password=tester
 
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.open-in-view=false
+
+spring.mail.host=127.0.0.1
+spring.mail.port=1025
+
+coyote-credit.base-url=http://localhost:8080

src/main/resources/static/css/style.css

@@ -0,0 +1,31 @@
+@font-face {
+    font-family: SpaceMono;
+    src: url("/static/font/SpaceMono-Regular.ttf");
+    font-style: normal;
+    font-weight: normal;
+}
+
+@font-face {
+    font-family: SpaceMono;
+    src: url("/static/font/SpaceMono-Italic.ttf");
+    font-style: italic;
+    font-weight: normal;
+}
+
+@font-face {
+    font-family: SpaceMono;
+    src: url("/static/font/SpaceMono-Bold.ttf");
+    font-style: normal;
+    font-weight: bold;
+}
+
+@font-face {
+    font-family: SpaceMono;
+    src: url("/static/font/SpaceMono-BoldItalic.ttf");
+    font-style: italic;
+    font-weight: bold;
+}
+
+.currency {
+    font-family: SpaceMono, monospace;
+}

src/main/resources/templates/account.html

@@ -8,28 +8,35 @@
 <div id="content" class="container">
     <h1>Account <span th:text="${account.number()}"></span></h1>
     <p>In <a th:href="@{/exchanges/{id}(id=${account.exchange().id()})}" th:text="${account.exchange().name()}"></a></p>
-    <p>Total value of <span th:text="${account.totalBalance() + ' ' + account.exchange().primaryTradeable()}"></span></p>
+    <p>Total value of <span class="currency" th:text="${account.totalBalance()}"></span>&nbsp;<span th:text="${account.exchange().primaryTradeable()}"></span></p>
 
     <h3>Overview</h3>
 
     <table class="table">
         <thead>
             <tr>
-                <th>Currency</th>
+                <th>Asset</th>
+                <th>Type</th>
                 <th>Balance</th>
             </tr>
         </thead>
         <tbody>
             <tr th:each="bal : ${account.balances()}">
                 <td th:text="${bal.symbol()}"></td>
-                <td th:text="${bal.amount()}"></td>
+                <td th:text="${bal.type()}"></td>
+                <td class="currency" th:text="${bal.amount()}"></td>
             </tr>
         </tbody>
     </table>
 
-    <h3>Recent Transactions</h3>
-    <table class="table">
-        <thead>
+    <a class="btn btn-success" th:href="@{/trade/{account}(account=${account.id()})}">Trade</a>
+    <a class="btn btn-success" th:href="@{/accounts/{aId}/transfer(aId=${account.id()})}">Transfer</a>
+    <a class="btn btn-primary" th:if="${account.userAdmin()}" th:href="@{/accounts/{aId}/editBalances(aId=${account.id()})}">Edit Balances</a>
+
+    <div th:if="${!account.recentTransactions().isEmpty()}">
+        <h3>Recent Transactions</h3>
+        <table class="table">
+            <thead>
             <tr>
                 <th>From</th>
                 <th>Amount From</th>
@@ -37,18 +44,16 @@
                 <th>Amount To</th>
                 <th>Timestamp</th>
             </tr>
-        </thead>
-        <tbody>
+            </thead>
+            <tbody>
             <tr th:each="tx : ${account.recentTransactions()}">
                 <td th:text="${tx.from().name()}"></td>
-                <td th:text="${tx.fromAmount()}"></td>
+                <td class="currency" th:text="${tx.fromAmount()}"></td>
                 <td th:text="${tx.to().name()}"></td>
-                <td th:text="${tx.toAmount()}"></td>
+                <td class="currency" th:text="${tx.toAmount()}"></td>
                 <td th:text="${tx.timestamp()}"></td>
             </tr>
-        </tbody>
-    </table>
-
-    <a class="btn btn-success" th:href="@{/trade/{account}(account=${account.id()})}">Trade</a>
-    <a class="btn btn-primary" th:if="${account.userAdmin()}" th:href="@{/accounts/{aId}/editBalances(aId=${account.id()})}">Edit Balances</a>
+            </tbody>
+        </table>
+    </div>
 </div>

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

@@ -10,7 +10,7 @@
     <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="${'tradeable-' + bal.id()}" class="form-control"/>
+            <input type="number" min="0" th:value="${bal.amount()}" th:name="${'tradeable-' + bal.id()}" class="form-control" required/>
         </div>
         <button type="submit" class="btn btn-success">Submit</button>
     </form>

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

@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html
+        lang="en"
+        xmlns:th="http://www.thymeleaf.org"
+        th:replace="~{layout/basic_page :: layout (title='Add Account', content=~{::#content})}"
+>
+<div id="content" class="container">
+    <form th:action="@{/accounts/{aId}/transfer(aId=${accountId})}" th:method="post">
+        <div class="mb-3">
+            <label for="recipientNumberInput" class="form-label">Recipient Account Number</label>
+            <input type="text" name="recipientNumber" class="form-control" id="recipientNumberInput" required/>
+        </div>
+        <div class="mb-3">
+            <label for="tradeableSelect" class="form-label">Asset</label>
+            <select class="form-select" id="tradeableSelect" name="tradeableId" required>
+                <option
+                        th:each="b : ${balances}"
+                        th:text="${b.symbol() + ' - Balance ' + b.amount()}"
+                        th:value="${b.id()}"
+                ></option>
+            </select>
+        </div>
+        <div class="mb-3">
+            <label for="amountInput" class="form-label">Amount</label>
+            <input type="number" min="0" name="amount" class="form-control" id="amountInput" required/>
+        </div>
+        <div class="mb-3">
+            <label for="messageTextArea" class="form-label">Message</label>
+            <textarea class="form-control" name="message" rows="3" id="messageTextArea"></textarea>
+        </div>
+        <button type="submit" class="btn btn-success">Submit</button>
+    </form>
+</div>

src/main/resources/templates/exchange/accounts.html

@@ -7,8 +7,6 @@
 <div id="content" class="container">
     <h1>Accounts</h1>
 
-    <a class="btn btn-primary" th:href="@{/exchanges/{eId}/addAccount(eId=${exchangeId})}">Add Account</a>
-
     <table class="table">
         <thead>
             <tr>
@@ -23,9 +21,11 @@
                 <td><a th:href="@{/accounts/{id}(id=${account.id()})}" th:text="${account.number()}"></a></td>
                 <td th:text="${account.name()}"></td>
                 <td th:text="${account.admin()}"></td>
-                <td th:text="${account.totalBalance()}"></td>
+                <td class="currency" th:text="${account.totalBalance()}"></td>
                 <td><a th:href="@{/exchanges/{eId}/removeAccount/{aId}(eId=${exchangeId}, aId=${account.id()})}">Remove</a></td>
             </tr>
         </tbody>
     </table>
+
+    <a class="btn btn-primary" th:href="@{/exchanges/{eId}/addAccount(eId=${exchangeId})}">Add Account</a>
 </div>

src/main/resources/templates/exchange/addAccount.html

@@ -13,15 +13,19 @@
     <form th:href="@{/exchanges/{eId}/addAccount(eId=${exchangeId})}" th:method="post">
         <div class="mb-3">
             <label for="nameInput" class="form-label">Name</label>
-            <input id="nameInput" type="text" class="form-control" name="name"/>
+            <input id="nameInput" type="text" class="form-control" name="name" required/>
         </div>
         <div class="mb-3">
             <label for="usernameInput" class="form-label">Username</label>
-            <input id="usernameInput" type="text" class="form-control" name="username"/>
+            <input id="usernameInput" type="text" class="form-control" name="username" required/>
+        </div>
+        <div class="mb-3">
+            <label for="emailInput" class="form-label">Email</label>
+            <input id="emailInput" type="email" class="form-control" name="email" required/>
         </div>
         <div class="mb-3">
             <label for="passwordInput" class="form-label">Password</label>
-            <input id="passwordInput" type="password" class="form-control" name="password"/>
+            <input id="passwordInput" type="password" class="form-control" name="password" required/>
         </div>
         <input type="hidden" name="_csrf" th:value="${_csrf.getToken()}"/>
         <button type="submit" class="btn btn-primary">Submit</button>

src/main/resources/templates/exchange/exchange.html

@@ -8,16 +8,16 @@
     <h1 th:text="${exchange.name()}"></h1>
 
     <p>
-        Primary tradeable: <span th:text="${exchange.primaryTradeable().name()}"></span>
+        Primary asset: <span th:text="${exchange.primaryTradeable().name()}"></span>
     </p>
 
-    <h3>Supported Tradeable Currencies / Stocks</h3>
+    <h3>Tradeable Assets</h3>
     <table class="table">
         <thead>
             <tr>
                 <th>Symbol</th>
                 <th>Type</th>
-                <th>Price ($)</th>
+                <th>Price (in USD)</th>
                 <th>Name</th>
             </tr>
         </thead>
@@ -25,15 +25,14 @@
             <tr th:each="tradeable : ${exchange.supportedTradeables()}">
                 <td th:text="${tradeable.symbol()}"></td>
                 <td th:text="${tradeable.type()}"></td>
-                <td th:text="${tradeable.marketPriceUsd()}"></td>
+                <td class="currency" th:text="${tradeable.formattedPriceUsd()}"></td>
                 <td th:text="${tradeable.name()}"></td>
             </tr>
         </tbody>
     </table>
 
-    <div th:if="${exchange.accountAdmin()}">
-        <div>
-            <a class="btn btn-primary" th:href="@{/exchanges/{eId}/accounts(eId=${exchange.id()})}">View Accounts</a>
-        </div>
+    <div>
+        <a class="btn btn-primary" th:href="@{/accounts/{aId}(aId=${exchange.accountId()})}">My Account</a>
+        <a class="btn btn-primary" th:if="${exchange.accountAdmin()}" th:href="@{/exchanges/{eId}/accounts(eId=${exchange.id()})}">All Accounts</a>
     </div>
 </div>

src/main/resources/templates/exchange/exchanges.html

@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html
+        lang="en"
+        xmlns:th="http://www.thymeleaf.org"
+        th:replace="~{layout/basic_page :: layout (title='Exchanges', content=~{::#content})}"
+>
+<div id="content" class="container">
+    <h1>Exchanges</h1>
+    <table class="table">
+        <thead>
+            <tr>
+                <th>Name</th>
+                <th>Primary Asset</th>
+                <th>Account</th>
+                <th>Estimated Balance</th>
+            </tr>
+        </thead>
+        <tbody>
+            <tr th:each="ed : ${exchangeData}">
+                <td>
+                    <a th:text="${ed.exchange().name()}" th:href="@{/exchanges/{eId}(eId=${ed.exchange().id()})}"></a>
+                </td>
+                <td th:text="${ed.exchange().primaryTradeable()}"></td>
+                <td>
+                    <a th:text="${ed.account().number()}" th:href="@{/accounts/{aId}(aId=${ed.account().id()})}"></a>
+                </td>
+                <td class="currency" th:text="${ed.account().totalBalance()}"></td>
+            </tr>
+        </tbody>
+    </table>
+    <p>
+        Use this page to view a list of all exchanges you're participating in. Click on the <strong>name</strong> of the exchange to view its page, and click on your <strong>account</strong> number to view your account information for a given exchange. The <strong>estimated balance</strong> shown in this overview may not be completely accurate. Navigate to your account page for a complete overview of your current account balances for stocks, fiat currencies, and more.
+    </p>
+</div>

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

@@ -21,6 +21,9 @@
                 <li class="nav-item">
                     <a class="nav-link" th:href="@{/}">Home</a>
                 </li>
+                <li class="nav-item">
+                    <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>
                 </li>

src/main/resources/templates/home.html

@@ -6,15 +6,19 @@
 >
 
 <div id="content" class="container">
-    <h1>Welcome!</h1>
+    <div class="row justify-content-center">
+        <div class="col-lg-6">
+            <h1 class="display-4">Welcome to Coyote Credit</h1>
 
-    <h3>Your Accounts:</h3>
-    <ul>
-        <li th:each="account : ${accounts}">
-            <a th:href="@{/accounts/{id}(id=${account.id()})}">
-                <span th:text="${account.accountNumber()}"></span> @
-                <span th:text="${account.exchangeName()}"></span>
-            </a>
-        </li>
-    </ul>
+            <p class="lead">
+                A simulated asset trading platform developed for building a stronger understanding of investment and wealth management.
+            </p>
+
+            <hr>
+
+            <p>
+                You can visit the <a th:href="@{/exchanges}">Exchanges</a> page to view a list of exchanges that you're participating in.
+            </p>
+        </div>
+    </div>
 </div>

src/main/resources/templates/login.html

@@ -1,23 +0,0 @@
-<!DOCTYPE html>
-<html
-        lang="en"
-        xmlns:th="http://www.thymeleaf.org"
->
-<head>
-    <meta charset="UTF-8">
-    <title>CC - Login</title>
-</head>
-<body>
-
-<form th:action="@{/login/processing}" th:method="post">
-    <label for="usernameInput">Username</label>
-    <input name="username" type="text" id="usernameInput">
-
-    <label for="passwordInput">Password</label>
-    <input name="password" type="password" id="passwordInput">
-
-    <input type="submit" value="Login">
-</form>
-
-</body>
-</html>

src/main/resources/templates/public/login.html

@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html
+        lang="en"
+        xmlns:th="http://www.thymeleaf.org"
+        th:replace="~{layout/basic_page :: layout (title='Login', content=~{::#content})}"
+>
+<div id="content" class="container">
+    <div class="row justify-content-center">
+        <div class="col-lg-4">
+
+
+            <h1>Login</h1>
+            <form th:action="@{/login/processing}" th:method="post">
+                <div class="mb-3">
+                    <label for="usernameInput" class="form-label">Username</label>
+                    <input name="username" class="form-control" type="text" id="usernameInput" required>
+                </div>
+
+                <div class="mb-3">
+                    <label for="passwordInput" class="form-label">Password</label>
+                    <input name="password" class="form-control" type="password" id="passwordInput" required>
+                </div>
+
+                <input type="submit" class="btn btn-primary" value="Login">
+                <a class="btn btn-secondary" th:href="@{/register}">Register</a>
+            </form>
+        </div>
+    </div>
+</div>

src/main/resources/templates/public/register.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html
+        lang="en"
+        xmlns:th="http://www.thymeleaf.org"
+        th:replace="~{layout/basic_page :: layout (title='Register', content=~{::#content})}"
+>
+<div id="content" class="container">
+    <div class="row justify-content-center">
+        <div class="col-lg-4">
+            <h1>Register</h1>
+            <form th:action="@{/register}" th:method="post">
+                <div class="mb-3">
+                    <label for="usernameInput" class="form-label">Username</label>
+                    <input name="username" id="usernameInput" class="form-control" type="text" required/>
+                </div>
+
+                <div class="mb-3">
+                    <label for="emailInput" class="form-label">Email</label>
+                    <input name="email" id="emailInput" class="form-control" type="email" required/>
+                </div>
+
+                <div class="mb-3">
+                    <label for="passwordInput" class="form-label">Password</label>
+                    <input name="password" id="passwordInput" class="form-control" type="password" required/>
+                </div>
+
+                <input type="submit" class="btn btn-primary" value="Register">
+            </form>
+        </div>
+    </div>
+
+</div>

src/main/resources/templates/user.html

@@ -13,6 +13,10 @@
                 <th scope="row">Username</th>
                 <td th:text="${user.username()}"></td>
             </tr>
+            <tr>
+                <th scope="row">Email</th>
+                <td th:text="${user.email()}"></td>
+            </tr>
         </tbody>
     </table>
 </div>