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