111111

2026-09-21 16:52:27 +08:00
parent 54d5c4fda3
commit 8c922a3c7f
8 changed files with 496 additions and 0 deletions
@@ -0,0 +1,63 @@
+using Microsoft.Extensions.Options;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using System.Text.Json;
+
+namespace Evergreen.Health.Application.Health.Integrations.HomeAssistant;
+
+public sealed class HomeAssistantClient
+{
+    private readonly HttpClient _httpClient;
+    private readonly HomeAssistantOptions _options;
+
+    public HomeAssistantClient(HttpClient httpClient, IOptions<HomeAssistantOptions> options)
+    {
+        _httpClient = httpClient;
+        _options = options.Value;
+        _httpClient.Timeout = TimeSpan.FromSeconds(Math.Clamp(_options.TimeoutSeconds, 3, 60));
+    }
+
+    public async Task<IReadOnlyList<HomeAssistantState>> GetStatesAsync(CancellationToken cancellationToken = default)
+    {
+        using var request = CreateRequest(HttpMethod.Get, "api/states");
+        using var response = await _httpClient.SendAsync(request, cancellationToken);
+        await EnsureSuccessAsync(response, cancellationToken);
+        return await response.Content.ReadFromJsonAsync<List<HomeAssistantState>>(cancellationToken: cancellationToken) ?? [];
+    }
+
+    public async Task CallServiceAsync(
+        string domain,
+        string service,
+        IReadOnlyDictionary<string, object?> data,
+        CancellationToken cancellationToken = default)
+    {
+        using var request = CreateRequest(HttpMethod.Post, $"api/services/{domain}/{service}");
+        request.Content = JsonContent.Create(data);
+        using var response = await _httpClient.SendAsync(request, cancellationToken);
+        await EnsureSuccessAsync(response, cancellationToken);
+    }
+
+    private HttpRequestMessage CreateRequest(HttpMethod method, string path)
+    {
+        if (!_options.Enabled)
+            throw new InvalidOperationException("Home Assistant 接入未启用");
+        if (string.IsNullOrWhiteSpace(_options.BaseUrl))
+            throw new InvalidOperationException("Home Assistant 地址未配置");
+        if (string.IsNullOrWhiteSpace(_options.AccessToken))
+            throw new InvalidOperationException("Home Assistant 访问令牌未配置");
+
+        var baseUrl = _options.BaseUrl.TrimEnd('/') + "/";
+        var request = new HttpRequestMessage(method, new Uri(new Uri(baseUrl), path));
+        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", _options.AccessToken);
+        request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+        return request;
+    }
+
+    private static async Task EnsureSuccessAsync(HttpResponseMessage response, CancellationToken cancellationToken)
+    {
+        if (response.IsSuccessStatusCode) return;
+        var body = await response.Content.ReadAsStringAsync(cancellationToken);
+        var message = body.Length > 300 ? body[..300] : body;
+        throw new HttpRequestException($"Home Assistant 返回 {(int)response.StatusCode}: {message}");
+    }
+}