Implementação do endpoint /accounts.

Adição do fluxo de criação de contas bancárias e autenticação de usuários nas requisições.

src/main/java/br/com/maida/desafio/bankapi/controller/AccountController.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package br.com.maida.desafio.bankapi.controller;
+
+import br.com.maida.desafio.bankapi.model.Account;
+import br.com.maida.desafio.bankapi.model.AccountResponse;
+import br.com.maida.desafio.bankapi.model.User;
+import br.com.maida.desafio.bankapi.service.AccountService;
+import br.com.maida.desafio.bankapi.service.AuthService;
+import javax.validation.Valid;
+import org.json.JSONObject;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ *
+ * @author Gabriel Duarte
+ */
+@RestController
+@RequestMapping("/accounts")
+public class AccountController {
+
+    @Autowired
+    private AccountService accountService;
+
+    @Autowired
+    private AuthService authService;
+
+    @PostMapping
+    @ResponseBody
+    public ResponseEntity<Object> addAccount(@Valid @RequestBody Account jsonAccountString) {
+
+        final HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setContentType(MediaType.APPLICATION_JSON);
+
+        if (accountService.validateNumberExists(jsonAccountString.getNumber())) {
+            return ResponseEntity.status(HttpStatus.UNPROCESSABLE_ENTITY).headers(httpHeaders).body(
+                    new JSONObject()
+                            .put("erro", "Já existe uma conta com o número informado")
+                            .toString());
+        }
+
+        User tempUser = authService.getUserByEmail(SecurityContextHolder.getContext().getAuthentication().getName());
+        if (tempUser == null) {
+            return ResponseEntity.status(HttpStatus.UNPROCESSABLE_ENTITY).headers(httpHeaders).body(
+                    new JSONObject()
+                            .put("message", "Acesso negado.")
+                            .toString());
+        }
+
+        jsonAccountString.setUserEmail(tempUser.getEmail());
+        jsonAccountString.setUserName(tempUser.getName());
+
+        accountService.add(jsonAccountString);
+
+        AccountResponse accountResponse = new AccountResponse(
+                jsonAccountString.getNumber(),
+                jsonAccountString.getBalance(),
+                jsonAccountString.getUserEmail(),
+                jsonAccountString.getUserName());
+
+        JSONObject jsonAccountReturn = new JSONObject();
+        jsonAccountReturn.put("number", jsonAccountString.getNumber());
+        jsonAccountReturn.put("balance", jsonAccountString.getBalance());
+        jsonAccountReturn.put("user", accountResponse.getUser());
+
+        return ResponseEntity.status(HttpStatus.OK).headers(httpHeaders).body(jsonAccountReturn.toString());
+    }
+
+}

src/main/java/br/com/maida/desafio/bankapi/model/Account.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package br.com.maida.desafio.bankapi.model;
+
+import java.math.BigDecimal;
+import javax.validation.constraints.DecimalMin;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+/**
+ *
+ * @author Gabriel Duarte
+ */
+public class Account {
+
+    @NotNull(message = "Campo number ausente.")
+    @NotEmpty(message = "Campo number vazio.")
+    private String number;
+
+    @NotNull(message = "Campo balance ausente.")
+    @DecimalMin(value = "0.0", inclusive = true, message = "Saldo deve ser maior ou igual a zero.")
+    private BigDecimal balance;
+
+    private String userEmail;
+
+    private String userName;
+
+    public Account() {
+
+    }
+
+    public Account(String number, BigDecimal balance, String userEmail, String userName) {
+        this.number = number;
+        this.balance = balance;
+        this.userEmail = userEmail;
+        this.userName = userName;
+    }
+
+    public String getNumber() {
+        return number;
+    }
+
+    public void setNumber(String number) {
+        this.number = number;
+    }
+
+    public BigDecimal getBalance() {
+        return balance;
+    }
+
+    public void setBalance(BigDecimal balance) {
+        this.balance = balance;
+    }
+
+    public String getUserEmail() {
+        return userEmail;
+    }
+
+    public void setUserEmail(String userEmail) {
+        this.userEmail = userEmail;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+}

src/main/java/br/com/maida/desafio/bankapi/model/AccountResponse.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package br.com.maida.desafio.bankapi.model;
+
+import java.math.BigDecimal;
+import org.json.JSONObject;
+
+/**
+ *
+ * @author Gabriel Duarte
+ */
+public class AccountResponse {
+
+    private String number;
+    private BigDecimal balance;
+    private JSONObject user;
+
+    public AccountResponse(String number, BigDecimal balance, String email, String name) {
+        this.number = number;
+        this.balance = balance;
+
+        JSONObject jsonUserAccount = new JSONObject();
+
+        jsonUserAccount.put("email", email);
+        jsonUserAccount.put("name", name);
+
+        this.user = jsonUserAccount;
+    }
+
+    public String getNumber() {
+        return number;
+    }
+
+    public BigDecimal getBalance() {
+        return balance;
+    }
+
+    public JSONObject getUser() {
+        return user;
+    }
+
+}

src/main/java/br/com/maida/desafio/bankapi/service/AccountService.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package br.com.maida.desafio.bankapi.service;
+
+import br.com.maida.desafio.bankapi.model.Account;
+import java.util.ArrayList;
+import java.util.List;
+import org.springframework.stereotype.Service;
+
+/**
+ *
+ * @author Gabriel Duarte
+ */
+@Service
+public class AccountService {
+
+    private List<Account> accounts;
+
+//    Cria a lista de contas bancárias caso ainda não tenha sido criada
+    public void createAccountList() {
+        if (accounts == null) {
+            accounts = new ArrayList<>();
+        }
+    }
+
+//    Valida se o número de conta enviado para cadastro já existe entre as contas.
+    public boolean validateNumberExists(String number) {
+        if (accounts != null) {
+            for (Account account : accounts) {
+                if (account.getNumber().equals(number)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+//    Valida se a conta é do usuário.
+    public boolean validateAccountEmail(String number, String email) {
+        if (accounts != null) {
+            for (Account account : accounts) {
+                if (account.getNumber().equals(number)) {
+                    return account.getUserEmail().equals(email);
+                }
+            }
+        }
+        return false;
+    }
+
+//    Adição do objeto Account na list de contas cadastradas.
+    public void add(Account account) {
+        createAccountList();
+        accounts.add(account);
+    }
+
+//    Retorna o objeto Account buscado pelo número
+    public Account getAccountByNumber(String number) {
+        if (accounts == null) {
+            return null;
+        }
+
+        for (Account account : accounts) {
+            if (account.getNumber().equals(number)) {
+                return account;
+            }
+        }
+        return null;
+    }
+
+}