Interview

Welcome

Thanks for cloning this project. This project is mean for conducting a technical interview for C# developers.
Good luck 🤞

How to submit

There are a few ways you can submit your answers:

1. Zip and send the code back to the contacting HR.
2. Just post your forked project link to HR.

Backgrounds

Pricing

You are provided （you dont need to implement） a .net standard library that mock a pricing system. The api simulated getting prices from external services.
See the diagram below:

The library has a class named “TradingApi” which implement interface:

public interface ITradingApi
{
    /// <summary>
    /// Get full list of symbol definitions, only two symbols are supported: “AUDUSD” and “CL-OIL”.
    /// </summary>
    /// <returns>Symbols</returns>
    IEnumerable<Symbol> GetSymbols();

    /// <summary>
    /// If there is an in-coming price and the symbol of the price is subscribed by SubscribeSymbol <see cref="SubscribeSymbol"/> an event will fire, the pricing data is passed as event data.
    /// </summary>
    event EventHandler<Price> OnPricing;

    /// <summary>
    /// Subscribe a symbol to receive prices though OnPricing event handler
    /// </summary>
    /// <param name="symbolName">name of a symbol</param>
    void SubscribeSymbol(string symbolName);
}

public struct Price
{
    public string Symbol { get; }
    public decimal Bid { get; }
    public decimal Ask { get; }
    public DateTime Time { get; }
}

public class Symbol
{
    public string Name { get; set; }
    public string BaseCurrency { get; set; }
    public int Digits { get; set; }
}

public class PriceStats
{
    public decimal Open { get; set; }
    public decimal Close { get; set; }
    public decimal Min { get; set; }
    public decimal Max { get; set; }
}

Tasks

You tasks are to complete these controllers and services to full fill the following requirements. The controllers and services are already created created,

1. GET /api/symbols • Return a list of all symbols

2. GET /api/symbols/{name} • Return a single Symbol object with the {name}

3. GET /api/price/{symbol} • Return the latest Price of a {symbol}

4. Get /api/price/{symbol}/stats • Return the PriceStats that contains Open, Close, Min and Max, for the current Minute, for a given symbol. (hint) An extension method could help you with the time

   a. Open - The first Bid price in the minute
   b. Close – the last Bid price in the minute
   c. Min – the lowest Bid price in the minute
   d. Max – the highest Bid price in the minute