postit and them also

src/PostIt/PostIt/Services/BlogApiClient.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using System.Text.Json;
+using System.Threading.Tasks;
+using PostIt.Models;
+
+namespace PostIt.Services;
+
+public sealed class BlogApiClient : IDisposable
+{
+    private readonly HttpClient _httpClient;
+    private readonly JsonSerializerOptions _serializerOptions;
+
+    public BlogApiClient(string baseUrl, string? bearerToken = null)
+        : this(CreateHttpClient(baseUrl, bearerToken))
+    {
+    }
+
+    public BlogApiClient(HttpClient httpClient)
+    {
+        _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
+        _serializerOptions = new JsonSerializerOptions(JsonSerializerDefaults.Web)
+        {
+            PropertyNameCaseInsensitive = true
+        };
+    }
+
+    private static HttpClient CreateHttpClient(string baseUrl, string? bearerToken)
+    {
+        var client = new HttpClient
+        {
+            BaseAddress = new Uri(baseUrl.TrimEnd('/') + "/")
+        };
+
+        if (!string.IsNullOrWhiteSpace(bearerToken))
+        {
+            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", bearerToken.Trim());
+        }
+
+        return client;
+    }
+
+    public async Task<List<BlogPost>> GetPostsAsync(int start = 0, int take = 25)
+    {
+        var result = await _httpClient.GetFromJsonAsync<List<BlogPost>>($"api/blog?start={start}&take={take}", _serializerOptions).ConfigureAwait(false);
+        return result ?? new List<BlogPost>();
+    }
+
+    public Task<BlogPost?> GetPostAsync(long id)
+        => _httpClient.GetFromJsonAsync<BlogPost>($"api/blog/{id}", _serializerOptions);
+
+    public async Task<BlogPost?> CreatePostAsync(BlogPost post)
+    {
+        var response = await _httpClient.PostAsJsonAsync("api/blog", post, _serializerOptions).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+        return await response.Content.ReadFromJsonAsync<BlogPost>(_serializerOptions).ConfigureAwait(false);
+    }
+
+    public async Task UpdatePostAsync(long id, BlogPost post)
+    {
+        var response = await _httpClient.PutAsJsonAsync($"api/blog/{id}", post, _serializerOptions).ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+    }
+
+    public async Task DeletePostAsync(long id)
+    {
+        var response = await _httpClient.DeleteAsync($"api/blog/{id}").ConfigureAwait(false);
+        response.EnsureSuccessStatusCode();
+    }
+
+    public void Dispose()
+    {
+        _httpClient.Dispose();
+    }
+}