111 lines
4.1 KiB
C#
111 lines
4.1 KiB
C#
using System;
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using System.Net.Http;
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using System.Net.Http.Headers;
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using System.Threading.Tasks;
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using PcgsInvUi.Models;
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using System.Text.Json;
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using ReactiveUI;
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namespace PcgsInvUi.Services;
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/// <summary>
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/// Provides an interface into the PCGS Public API.
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/// </summary>
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public class PcgsClient : ReactiveObject {
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public int NumApiRequests {
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get => _numApiRequests;
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set => this.RaiseAndSetIfChanged(ref _numApiRequests, value);
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}
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private string _apiUri = "https://api.pcgs.com/publicapi";
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private readonly string _apiKey;
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private int _numApiRequests;
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public PcgsClient(string apiKey) {
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// I'd like to be able to test the API key upon initialization.
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_apiKey =
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"E8xivTVN_k4Q8ubk8Xv_uU11U91WX0wDht4S4m4BAf2HPmKnGrZ0J2f9nccM7Ns1VkGoT1SXYR74I7aNaMKqXlJGEy3oobseKV0nGiqu1IKvFkOTVjhV37SWUVExSDFMC6FLzs7xJQIHwkcxr5JFOQNmc4ZytEh_-hmCN3NL-z0fEk98tzBmPJ_F7bq_xNru86QMD2A9yalu_dWe-lCysfyE2bCA2EDqwvWenRYf-0XnNtp6qlxxCMlCd-TDqqRKLC3qefCwpXSemwBiNSP5gbC9pwcKrZugkruuJ0nyxxThZymm";
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}
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public async Task<Coin> GetCoinFactsByGrade(int pcgsNumber, string grade, bool plusGrade = false) {
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Coin newCoin = null;
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using (HttpClient client = new HttpClient()) {
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var gradeParam = GetGradeFromString(grade);
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string requestUri =
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$"{_apiUri}/coindetail/GetCoinFactsByGrade/?PCGSNo={pcgsNumber}&GradeNo={gradeParam}&PlusGrade={plusGrade}";
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client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", _apiKey);
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Console.WriteLine($"Sending request to {requestUri}");
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HttpResponseMessage response = await client.GetAsync(requestUri);
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Console.WriteLine("Got response.");
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if (response.IsSuccessStatusCode) {
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// TODO Check for errors indicated by a successful response.
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string jsonResponse = await response.Content.ReadAsStringAsync();
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newCoin = ParseJsonResponse(jsonResponse);
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Console.WriteLine("Coin created.");
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}
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else {
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// TODO Throw HTTP exception.
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Console.WriteLine("Error getting coin.");
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}
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}
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return newCoin;
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}
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private int GetGradeFromString(string grade) {
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var actualGrade = int.Parse(grade.Substring(grade.Length - 2));
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Console.WriteLine($"Grade is {actualGrade}");
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return actualGrade;
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}
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// TODO Will eventually create the other methods that are included in the Public API.
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private Coin ParseJsonResponse(string json) {
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Console.WriteLine(json);
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Coin newCoin = JsonSerializer.Deserialize<Coin>(json);
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Console.WriteLine($"New Coin has pcgs number {newCoin.PCGSNo}");
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string test = JsonSerializer.Serialize(newCoin);
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Console.WriteLine(test);
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return newCoin;
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}
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}
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/// <summary>
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/// Thrown when the API response indicates that the request was invalid.
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/// Generally used when the request was formatted incorrectly.
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/// </summary>
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public class InvalidRequestException : Exception {
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public InvalidRequestException() { }
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public InvalidRequestException(string message) : base(message) { }
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public InvalidRequestException(string message, Exception inner) : base(message, inner) { }
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}
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/// <summary>
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/// Thrown when the API response indicates that the coin was not found.
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/// Generally used when the PCGS number and grade combo that was requested does not exist in the PCGS database.
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/// </summary>
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public class CoinNotFoundException : Exception {
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public CoinNotFoundException() { }
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public CoinNotFoundException(string message) : base(message) { }
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public CoinNotFoundException(string message, Exception inner) : base(message, inner) { }
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}
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/// <summary>
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/// Thrown when the API returns an HTTP error 401.
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/// Generally indicates that the API key is invalid.
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/// </summary>
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public class ApiAuthorizationException : Exception {
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public ApiAuthorizationException() { }
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public ApiAuthorizationException(string message) : base(message) { }
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public ApiAuthorizationException(string message, Exception inner) : base(message, inner) { }
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}
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public
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