Files
timelog/backendCs/Getall.cs
T
2024-11-29 19:35:10 +02:00

103 lines
4.0 KiB
C#

using System.Net;
using System.Text;
using MySql.Data.MySqlClient;
using Newtonsoft.Json;
namespace Server
{
// there should be a better way to deal with data comming from sql
public class Log
{
public object? f_name { get; set; }
public object? l_name { get; set; }
public object? mail { get; set; }
public object? name { get; set; }
public object? time { get; set; }
public object? date { get; set; }
public object? user { get; set; }
}
public class Getall
{
public static void run(MySqlConnection conn, HttpListenerRequest request, HttpListenerResponse response)
{
try
{
// open connection
conn.Open();
// prepare SQL query
MySqlCommand cmd = new MySqlCommand();
cmd.Connection = conn;
// get url params
var queryString = request.QueryString;
string? from = queryString["from"];
string? to = queryString["to"];
string? sortby = queryString["sortby"];
string? offset = queryString["offset"];
string? order = queryString["order"];
order = order == "true" ? "ASC" : "DESC";
// this shenanigan is needed to remove the "" around group by
string sqlQ = @"SELECT u.f_name,u.l_name,u.mail,p.name,t.time,t.date,t.user
FROM Timelog t
INNER JOIN Project p ON p.id=t.project
INNER JOIN User u ON u.id=t.user ";
string offsetQ = " LIMIT 10 OFFSET " + offset + ";";
// depending on the incoming parameters construct a Query
if (!string.IsNullOrEmpty(to) && !string.IsNullOrEmpty(from))
{
string whereQ = " WHERE t.date BETWEEN @from AND @to ";
sqlQ = sqlQ + whereQ;
}
if (!string.IsNullOrEmpty(sortby))
{
string orderQ = " ORDER BY " + sortby + " " + order;
sqlQ = sqlQ + orderQ;
}
// add the final line to the query
cmd.CommandText = sqlQ + offsetQ;
// those don't produce error if they don't find their variables
cmd.Parameters.AddWithValue("@from", from);
cmd.Parameters.AddWithValue("@to", to);
// execute query and read results
MySqlDataReader reader = cmd.ExecuteReader();
List<Log> entries = new List<Log>();
while (reader.Read())
{
entries.Add(new Log
{
f_name = reader["f_name"],
l_name = reader["l_name"],
user = reader["user"],
date = reader["date"],
name = reader["name"],
time = reader["time"],
mail = reader["mail"],
});
}
// serialize JSON
string jsonResponse = JsonConvert.SerializeObject(entries);
// prepare response
byte[] buffer = Encoding.UTF8.GetBytes(jsonResponse);
response.ContentType = "application/json";
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
catch (Exception ex)
{
string errorMessage = $"Error: {ex.Message}";
byte[] buffer = Encoding.UTF8.GetBytes(errorMessage);
response.ContentType = "text/plain";
response.ContentLength64 = buffer.Length;
response.OutputStream.Write(buffer, 0, buffer.Length);
}
finally
{
conn.Close();
}
}
}
}