feat: implemented available resumes on Back-end

JOBot.Backend/Services/HeadHunterService.cs

@@ -1,7 +1,8 @@
 using System.Text;
 using System.Text.Json;
 using JOBot.Backend.DAL.Context;
-using JOBot.Backend.DTOs.HeadHunterHook;
+using JOBot.Backend.DAL.Models;
+using JOBot.Backend.DTOs.HeadHunterApi;
 using JOBot.Backend.Infrastructure.Config;
 using JOBot.Infrastructure.Config;
 using Microsoft.EntityFrameworkCore;
@@ -38,6 +39,13 @@ public class HeadHunterService(
         return string.Format(_config.Links.AuthLink, [_config.ClientId, GetRedirectUrl(userId)]);
     }
 
+    /// <summary>
+    ///     Auth user on HeadHunter API
+    /// </summary>
+    /// <param name="userId"></param>
+    /// <param name="authorizationCode"></param>
+    /// <param name="error"></param>
+    /// <returns></returns>
     public async Task<Status> AuthUser(int userId, string authorizationCode, string? error) //TODO: Разбить этот метод
     {
         logger.LogInformation($"Authorization for user {userId} in process...");
@@ -123,6 +131,49 @@ public class HeadHunterService(
         return Status.Success;
     }
 
+    public async Task<Status> UpdateUserAccessToken(User user)
+    {
+        if(user.RefreshToken == null)
+            return Status.UserAuthRejectedError;
+        
+        using var client = new HttpClient(); //TODO: Написать wrapper для работы с HH API
+        var form = new Dictionary<string, string>
+        {
+            { "refresh_token", user.RefreshToken },
+            { "grant_type", "refresh_token" }
+        };
+        client.BaseAddress = new UriBuilder(_config.Links.HeadHunterApiDomain)
+        {
+            Port = -1,
+            Scheme = "https"
+        }.Uri;
+        client.DefaultRequestHeaders.UserAgent.ParseAdd("Jobot BackEnd Service");
+
+        using var res = await client.SendAsync(
+            new HttpRequestMessage(
+                HttpMethod.Post,
+                _config.Links.HeadHunterTokenRoute)
+            {
+                Content = new FormUrlEncodedContent(form)
+            });
+        
+        var responseDto =
+            JsonSerializer.Deserialize<HeadHunterTokenResponseDto>(await res.Content.ReadAsStringAsync());
+
+        if (responseDto == null)
+        {
+            logger.LogWarning($"User {user.UserId} access token accept completed with error " +
+                              $"{nameof(Status.HeadHunterResponseDeserializationFailedError)}");
+            return Status.HeadHunterResponseDeserializationFailedError;
+        }
+        
+        user.RefreshToken = responseDto.RefreshToken;
+        user.AccessToken = responseDto.AccessToken;
+        await dbContext.SaveChangesAsync();
+        
+        return Status.Success;
+    }
+    
     private string GetRedirectUrl(long userId)
     {
         return new UriBuilder(_config.Links.HookDomain)