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Restructure data access layer/data layer

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This commit is contained in:
Aaron Po
2026-01-11 23:36:26 -05:00
parent 8d6b903aa7
commit 372aac897a
17 changed files with 457 additions and 256 deletions
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55
DataAccessLayer/Sql/DatabaseHelper.cs Normal file
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using System;
using System.Data;
using Microsoft.Data.SqlClient;
namespace DataAccessLayer.Sql
{
public class DatabaseHelper
{
private readonly string _connectionString;
public DatabaseHelper(string connectionString)
{
_connectionString = connectionString;
}
public void ExecuteRawSql(string query)
{
try
{
using (
SqlConnection connection = new SqlConnection(
_connectionString
)
)
{
connection.Open();
using (
SqlCommand command = new SqlCommand(query, connection)
)
{
command.CommandType = CommandType.Text;
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
for (int i = 0; i < reader.FieldCount; i++)
{
Console.WriteLine(
$"{reader.GetName(i)}: {reader.GetValue(i)}"
);
}
}
}
}
}
}
catch (Exception ex)
{
Console.WriteLine($"An error occurred: {ex.Message}");
}
}
}
}

187
DataAccessLayer/Sql/crud/UserAccount.sql Normal file
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USE Biergarten;
GO
CREATE OR ALTER PROCEDURE usp_CreateUserAccount
(
@UserAccountId UNIQUEIDENTIFIER = NULL,
@Username VARCHAR(64),
@FirstName NVARCHAR(128),
@LastName NVARCHAR(128),
@DateOfBirth DATETIME,
@Email VARCHAR(128)
)
AS
BEGIN
SET NOCOUNT ON
SET XACT_ABORT ON
BEGIN TRANSACTION
INSERT INTO UserAccount
(
UserAccountID,
Username,
FirstName,
LastName,
DateOfBirth,
Email
)
VALUES
(
COALESCE(@UserAccountId, NEWID()),
@Username,
@FirstName,
@LastName,
@DateOfBirth,
@Email
);
COMMIT TRANSACTION
END;
GO
CREATE OR ALTER PROCEDURE usp_DeleteUserAccount
(
@UserAccountId UNIQUEIDENTIFIER
)
AS
BEGIN
SET NOCOUNT ON
SET XACT_ABORT ON
BEGIN TRANSACTION
IF NOT EXISTS (SELECT 1 FROM UserAccount WHERE UserAccountId = @UserAccountId)
BEGIN
RAISERROR('UserAccount with the specified ID does not exist.', 16,
1);
ROLLBACK TRANSACTION
RETURN
END
DELETE FROM UserAccount
WHERE UserAccountId = @UserAccountId;
COMMIT TRANSACTION
END;
GO
CREATE OR ALTER PROCEDURE usp_UpdateUserAccount
(
@Username VARCHAR(64),
@FirstName NVARCHAR(128),
@LastName NVARCHAR(128),
@DateOfBirth DATETIME,
@Email VARCHAR(128),
@UserAccountId UNIQUEIDENTIFIER
)
AS
BEGIN
SET NOCOUNT ON
SET XACT_ABORT ON
BEGIN TRANSACTION
IF NOT EXISTS (SELECT 1 FROM UserAccount WHERE UserAccountId = @UserAccountId)
BEGIN
RAISERROR('UserAccount with the specified ID does not exist.', 16,
1);
ROLLBACK TRANSACTION
RETURN
END
UPDATE UserAccount
SET
Username = @Username,
FirstName = @FirstName,
LastName = @LastName,
DateOfBirth = @DateOfBirth,
Email = @Email
WHERE UserAccountId = @UserAccountId;
COMMIT TRANSACTION
END;
GO
CREATE OR ALTER PROCEDURE usp_GetUserAccountById
(
@UserAccountId UNIQUEIDENTIFIER
)
AS
BEGIN
SET NOCOUNT ON;
SELECT UserAccountID,
Username,
FirstName,
LastName,
Email,
CreatedAt,
UpdatedAt,
DateOfBirth,
Timer
FROM dbo.UserAccount
WHERE UserAccountID = @UserAccountId;
END;
GO
CREATE OR ALTER PROCEDURE usp_GetAllUserAccounts
AS
BEGIN
SET NOCOUNT ON;
SELECT UserAccountID,
Username,
FirstName,
LastName,
Email,
CreatedAt,
UpdatedAt,
DateOfBirth,
Timer
FROM dbo.UserAccount;
END;
GO
CREATE OR ALTER PROCEDURE usp_GetUserAccountByUsername
(
@Username VARCHAR(64)
)
AS
BEGIN
SET NOCOUNT ON;
SELECT UserAccountID,
Username,
FirstName,
LastName,
Email,
CreatedAt,
UpdatedAt,
DateOfBirth,
Timer
FROM dbo.UserAccount
WHERE Username = @Username;
END;
GO
CREATE OR ALTER PROCEDURE usp_GetUserAccountByEmail
(
@Email VARCHAR(128)
)
AS
BEGIN
SET NOCOUNT ON;
SELECT UserAccountID,
Username,
FirstName,
LastName,
Email,
CreatedAt,
UpdatedAt,
DateOfBirth,
Timer
FROM dbo.UserAccount
WHERE Email = @Email;
END;
GO