Implement remaining GraphQL operations for bank accounts. Resolves #67

src/server/RobinTTY.PersonalFinanceDashboard.API/Resolvers/Mutations/BankAccountMutations.cs

@@ -0,0 +1,44 @@
+using HotChocolate.Types;
+using RobinTTY.PersonalFinanceDashboard.Core.Models;
+using RobinTTY.PersonalFinanceDashboard.Infrastructure.Repositories;
+
+namespace RobinTTY.PersonalFinanceDashboard.Api.Resolvers.Mutations;
+
+/// <summary>
+/// <see cref="BankAccount"/> related mutation resolvers.
+/// </summary>
+[MutationType]
+public class BankAccountMutations
+{
+    /// <summary>
+    /// Create a new banking account.
+    /// </summary>
+    /// <param name="repository">The injected repository to use for data retrieval.</param>
+    /// <param name="bankAccount">The banking account to create.</param>
+    public async Task<BankAccount> CreateBankAccount(BankAccountRepository repository, BankAccount bankAccount)
+    {
+        return await repository.AddBankAccount(bankAccount);
+    }
+
+    /// <summary>
+    /// Update an existing banking account.
+    /// </summary>
+    /// <param name="repository">The injected repository to use for data retrieval.</param>
+    /// <param name="bankAccount">The banking account to update.</param>
+    /// <returns></returns>
+    public async Task<BankAccount> UpdateBankAccount(BankAccountRepository repository, BankAccount bankAccount)
+    {
+        return await repository.UpdateBankAccount(bankAccount);
+    }
+
+    /// <summary>
+    /// Delete an existing bank account.
+    /// </summary>
+    /// <param name="repository">The injected repository to use for data retrieval.</param>
+    /// <param name="bankAccountId">The id of the bank account to delete.</param>
+    public async Task<bool> DeleteBankAccount(BankAccountRepository repository,
+        Guid bankAccountId)
+    {
+        return await repository.DeleteBankAccount(bankAccountId);
+    }
+}

src/server/RobinTTY.PersonalFinanceDashboard.API/Resolvers/Queries/BankAccountQueryResolvers.cs

@@ -15,17 +15,18 @@ public sealed class BankAccountQueryResolvers
     /// </summary>
     /// <param name="repository">The repository to use for data retrieval.</param>
     /// <param name="accountId">The id of the account to lookup.</param>
-    public async Task<BankAccount?> GetAccount(BankAccountRepository repository, Guid accountId)
+    public async Task<BankAccount?> GetBankAccount(BankAccountRepository repository, Guid accountId)
     {
         return await repository.GetBankAccount(accountId);
     }
 
+    // TODO: there is no input here like the comment indicates
     /// <summary>
     /// Look up accounts by a list of ids.
     /// </summary>
     /// <param name="repository">The injected repository to use for data retrieval.</param>
     [UsePaging]
-    public async Task<IEnumerable<BankAccount>> GetAccounts(BankAccountRepository repository)
+    public async Task<IEnumerable<BankAccount>> GetBankAccounts(BankAccountRepository repository)
     {
         return await repository.GetBankAccounts();
     }

src/server/RobinTTY.PersonalFinanceDashboard.Core/Models/BankAccount.cs

@@ -29,7 +29,7 @@ public class BankAccount : Account
     /// <summary>
     /// The banking institution this account belongs to.
     /// </summary>
-    public BankingInstitution AssociatedInstitution { get; set; }
+    public BankingInstitution? AssociatedInstitution { get; set; }
 
     /// <summary>
     /// Creates a new instance of <see cref="BankAccount"/>.
@@ -49,7 +49,7 @@ public class BankAccount : Account
     /// <param name="accountType">Specifies the nature, or use, of the account.</param>
     /// <param name="associatedInstitution">The banking institution this account belongs to.</param>
     public BankAccount(Guid id, string? name, string? description, decimal? balance, string? currency, List<Transaction> transactions,
-        string? iban, string? bic, string? bban, string? ownerName, string? accountType, BankingInstitution associatedInstitution)
+        string? iban, string? bic, string? bban, string? ownerName, string? accountType, BankingInstitution? associatedInstitution)
         : base(id, name, description, balance, currency, transactions)
     {
         Iban = iban;

src/server/RobinTTY.PersonalFinanceDashboard.Infrastructure/Repositories/BankAccountRepository.cs

@@ -45,4 +45,42 @@ public async Task<List<BankAccount>> GetBankAccounts()
         var accountEntities = await _dbContext.BankAccounts.ToListAsync();
         return accountEntities.Select(_bankAccountMapper.EntityToModel).ToList();
     }
+
+    /// <summary>
+    /// Adds a new <see cref="BankAccount"/>.
+    /// </summary>
+    /// <param name="bankAccount">The <see cref="BankAccount"/>s to add.</param>
+    public async Task<BankAccount> AddBankAccount(BankAccount bankAccount)
+    {
+        var bankAccountEntity = _bankAccountMapper.ModelToEntity(bankAccount);
+        var entityEntry = _dbContext.BankAccounts.Add(bankAccountEntity);
+        await _dbContext.SaveChangesAsync();
+
+        return _bankAccountMapper.EntityToModel(entityEntry.Entity);
+    }
+
+    /// <summary>
+    /// Updates an existing <see cref="BankAccount"/>.
+    /// </summary>
+    /// <param name="bankAccount">The bank account to update.</param>
+    /// <returns>The updated <see cref="BankAccount"/>.</returns>
+    public async Task<BankAccount> UpdateBankAccount(BankAccount bankAccount)
+    {
+        var accountEntity = _bankAccountMapper.ModelToEntity(bankAccount);
+        var entityEntry = _dbContext.BankAccounts.Update(accountEntity);
+        await _dbContext.SaveChangesAsync();
+
+        return _bankAccountMapper.EntityToModel(entityEntry.Entity);
+    }
+
+    /// <summary>
+    /// Deletes an existing <see cref="BankAccount"/>.
+    /// </summary>
+    /// <param name="bankAccountId">The id of the <see cref="BankAccount"/> to delete.</param>
+    /// <returns>Boolean value indicating whether the operation was successful.</returns>
+    public async Task<bool> DeleteBankAccount(Guid bankAccountId)
+    {
+        var result = await _dbContext.BankAccounts.Where(t => t.Id == bankAccountId).ExecuteDeleteAsync();
+        return Convert.ToBoolean(result);
+    }
 }