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postgres backend for vehicle.

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DESKTOP-GENO133\IvanPlex 2024-02-06 20:24:05 -07:00
parent 6cdfba420f
commit 9c225ff7a0
3 changed files with 105 additions and 1 deletions
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1
CarCareTracker.csproj
View File

@ -13,6 +13,7 @@
<ItemGroup>
<PackageReference Include="CsvHelper" Version="30.0.1" />
<PackageReference Include="LiteDB" Version="5.0.17" />
<PackageReference Include="Npgsql" Version="8.0.1" />
</ItemGroup>
</Project>

97
External/Implementations/Postgres/VehicleDataAccess.cs vendored Normal file
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@ -0,0 +1,97 @@
using CarCareTracker.External.Interfaces;
using CarCareTracker.Models;
using Npgsql;
using System.Reflection.Metadata.Ecma335;
using System.Text.Json;
namespace CarCareTracker.External.Implementations
{
public class PGVehicleDataAccess: IVehicleDataAccess
{
private NpgsqlConnection pgDataSource;
public PGVehicleDataAccess(IConfiguration config)
{
pgDataSource = new NpgsqlConnection(config["POSTGRES_CONNECTION"]);
pgDataSource.Open();
//create table if not exist.
string initCMD = $"CREATE TABLE IF NOT EXISTS app.{tableName} (id INT GENERATED ALWAYS AS IDENTITY primary key, data jsonb not null)";
using (var ctext = new NpgsqlCommand(initCMD, pgDataSource))
{
ctext.ExecuteNonQuery();
}
}
private static string tableName = "vehicles";
public bool SaveVehicle(Vehicle vehicle)
{
var serializedData = JsonSerializer.Serialize(vehicle);
if (vehicle.Id == default)
{
string cmd = $"INSERT INTO app.{tableName} (data) VALUES(CAST(@data AS jsonb)) RETURNING id";
using (var ctext = new NpgsqlCommand(cmd, pgDataSource))
{
ctext.Parameters.AddWithValue("data", serializedData);
vehicle.Id = Convert.ToInt32(ctext.ExecuteScalar());
return vehicle.Id != default;
}
} else
{
string cmd = $"UPDATE app.{tableName} SET data = CAST(@data AS jsonb) WHERE id = @id";
using (var ctext = new NpgsqlCommand(cmd, pgDataSource))
{
ctext.Parameters.AddWithValue("id", vehicle.Id);
ctext.Parameters.AddWithValue("data", serializedData);
return ctext.ExecuteNonQuery() > 0;
}
}
}
public bool DeleteVehicle(int vehicleId)
{
string cmd = $"DELETE FROM app.{tableName} WHERE id = @id";
using (var ctext = new NpgsqlCommand(cmd, pgDataSource))
{
ctext.Parameters.AddWithValue("id", vehicleId);
return ctext.ExecuteNonQuery() > 0;
}
}
public List<Vehicle> GetVehicles()
{
string cmd = $"SELECT id, data FROM app.{tableName} ORDER BY id ASC";
var results = new List<Vehicle>();
using (var ctext = new NpgsqlCommand(cmd, pgDataSource))
{
using (NpgsqlDataReader reader = ctext.ExecuteReader())
while (reader.Read())
{
Vehicle vehicle = JsonSerializer.Deserialize<Vehicle>(reader["data"] as string);
vehicle.Id = Convert.ToInt32(reader["id"]);
if (string.IsNullOrWhiteSpace(vehicle.ImageLocation))
{
vehicle.ImageLocation = "/defaults/noimage.png";
}
results.Add(vehicle);
}
}
return results;
}
public Vehicle GetVehicleById(int vehicleId)
{
string cmd = $"SELECT id, data FROM app.{tableName} WHERE id = @id";
Vehicle vehicle = new Vehicle();
using (var ctext = new NpgsqlCommand(cmd, pgDataSource))
{
ctext.Parameters.AddWithValue("id", vehicleId);
using (NpgsqlDataReader reader = ctext.ExecuteReader())
while (reader.Read())
{
vehicle = JsonSerializer.Deserialize<Vehicle>(reader["data"] as string);
vehicle.Id = Convert.ToInt32(reader["id"]);
if (string.IsNullOrWhiteSpace(vehicle.ImageLocation))
{
vehicle.ImageLocation = "/defaults/noimage.png";
}
}
}
return vehicle;
}
}
}

8
Program.cs
View File

@ -12,7 +12,13 @@ var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddSingleton<IVehicleDataAccess, VehicleDataAccess>();
//data access method
if (!string.IsNullOrWhiteSpace(builder.Configuration["POSTGRES_CONNECTION"])){
builder.Services.AddSingleton<IVehicleDataAccess, PGVehicleDataAccess>();
} else
{
builder.Services.AddSingleton<IVehicleDataAccess, VehicleDataAccess>();
}
builder.Services.AddSingleton<INoteDataAccess, NoteDataAccess>();
builder.Services.AddSingleton<IServiceRecordDataAccess, ServiceRecordDataAccess>();
builder.Services.AddSingleton<IGasRecordDataAccess, GasRecordDataAccess>();