Added backend skeleton, models and services

This commit is contained in:
Mguy13 2023-01-04 18:53:48 +01:00
parent f818b2d39e
commit 9e2565d110
8 changed files with 193 additions and 4 deletions

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@ -7,4 +7,9 @@
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="CsvHelper" Version="30.0.1" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
</ItemGroup>
</Project>

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@ -1,10 +1,29 @@
namespace OrderParser
using Configuration;
using DTO;
using static Configuration.DemoApplicationConfiguration;
namespace OrderParser
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(string.Join(" ", args));
try
{
var filesInfoConfig = DemoApplicationConfiguration.InitializeFrom(args);
var csvFileWriter = new CsvFileWriter(filesInfoConfig.OutputFile);
foreach (var jsonFile in filesInfoConfig.JsonFilesInfo)
{
var orderModel = new OrderModel(Newtonsoft.Json.JsonConvert.DeserializeObject<OrderDto>(File.ReadAllText(jsonFile.FullName)));
csvFileWriter.writeOutRow(orderModel);
}
}
catch (DemoApplicationConfigurationException e)
{
Console.WriteLine(e.Message);
}
}
}
}

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@ -6,13 +6,13 @@
"ProductId": "PID3",
"Description": "pid3 description",
"Amount": 1.5,
"price": 19.5
"price": 42.0
},
{
"ProductId": "PID4",
"Description": "pid4 description",
"Amount": 2.5,
"price": 12.1
"price": 169.0
}
]
}

34
data/dtos/order_dto.cs Normal file
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@ -0,0 +1,34 @@
namespace DTO
{
using Newtonsoft.Json;
public partial class OrderDto
{
[JsonProperty("OrderId")]
public virtual long OrderId { get; set; }
[JsonProperty("Description")]
public virtual string Description { get; set; }
[JsonProperty("customer ID")]
public virtual long CustomerId { get; set; }
[JsonProperty("products")]
public virtual Product[] Products { get; set; }
}
public partial class Product
{
[JsonProperty("ProductId")]
public virtual string ProductId { get; set; }
[JsonProperty("Description")]
public virtual string Description { get; set; }
[JsonProperty("Amount")]
public virtual double Amount { get; set; }
[JsonProperty("price")]
public virtual double Price { get; set; }
}
}

17
models/OrderModel.cs Normal file
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@ -0,0 +1,17 @@
using DTO;
public sealed class OrderModel {
public long OrderId { get; set; }
public string OrderDescription { get; set; }
public long CustomerId { get; set; }
public double TotalPrice { get; set; }
public OrderModel(OrderDto orderDTO) {
OrderId = orderDTO.OrderId;
OrderDescription = orderDTO.Description;
CustomerId = orderDTO.CustomerId;
TotalPrice = orderDTO.Products.Select(product => product.Price).Sum();
}
}

22
services/CsvWriter.cs Normal file
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@ -0,0 +1,22 @@
using System.Globalization;
using CsvHelper;
class CsvFileWriter
{
private TextWriter textWriter;
private CsvWriter csvWriter;
public CsvFileWriter(FileInfo fileInfo) {
textWriter = new StreamWriter(fileInfo.FullName);
csvWriter = new CsvWriter(textWriter, CultureInfo.InvariantCulture);
}
public void writeOutRow(OrderModel orderModel) {
csvWriter.WriteField(orderModel.OrderId);
csvWriter.WriteField(orderModel.OrderDescription);
csvWriter.WriteField(orderModel.CustomerId);
csvWriter.WriteField(orderModel.TotalPrice);
csvWriter.NextRecord();
}
}

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@ -0,0 +1,92 @@
namespace Configuration
{
public sealed class DemoApplicationConfiguration
{
private FileInfo[] jsonFiles;
public FileInfo[] JsonFilesInfo
{
get { return jsonFiles; }
private set
{
jsonFiles = value.Reverse().ToArray();
}
}
private FileInfo outputFile;
public FileInfo OutputFile{
get {return outputFile;}
private set
{
if (!canCreateFile(value.FullName))
throw new DemoApplicationConfigurationException($"Given output name '{value.FullName}' cannot be used");
outputFile = value;
}
}
public static DemoApplicationConfiguration InitializeFrom(string[] args)
{
if (args.Length < 3)
throw new DemoApplicationConfigurationException("Must have atleast: 1 flag, 1 path, 1 output filename");
var outputFileName = new FileInfo(args.Last());
// Remove last file-name arg, to get a more consistent array
args = args.SkipLast(1).ToArray();
string[] givenFlags = args.Where((value, index) => index % 2 == 0).ToArray();
string[] givenFilePaths = args.Where((value, index) => index % 2 != 0).ToArray();
try
{
if ( givenFlags.Length == 1 && givenFlags[0].Equals("-d") ) {
string[] filesInDirectory = Directory.GetFiles(givenFilePaths[0]);
return new DemoApplicationConfiguration {
OutputFile = outputFileName,
JsonFilesInfo = filesInDirectory.Select(name => new FileInfo(name)).ToArray(),
};
}
else if (givenFlags.All((string flag) => flag.Equals("-f"))) {
return new DemoApplicationConfiguration {
OutputFile = outputFileName,
JsonFilesInfo = givenFilePaths.Select(name => new FileInfo(name)).ToArray(),
};
}
else {
throw new DemoApplicationConfigurationException("Must have either 1 flag that is '-d', of all flags must be '-f");
}
}
catch (System.Exception e)
{
Console.WriteLine("Something else went wrong");
throw;
}
}
private static bool canCreateFile(string filename) {
try
{
using (File.Create(filename)) {
File.Delete(filename);
return true;
}
}
catch
{
return false;
}
}
[Serializable]
internal sealed class DemoApplicationConfigurationException : Exception
{
public DemoApplicationConfigurationException()
{
}
public DemoApplicationConfigurationException(string? message) : base(message)
{
}
}
}
}