refactor(indexers): extract test logic into search providers #490
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| /* | ||
| * Listenarr - Audiobook Management System | ||
| * Copyright (C) 2024-2025 Listenarr Contributors | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published | ||
| * by the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| using System.Text.Json; | ||
| using Listenarr.Api.Services; | ||
| using Listenarr.Domain.Models; | ||
|
|
||
| namespace Listenarr.Api.Services.Search.Providers | ||
| { | ||
| /// <summary> | ||
| /// Base class for indexer providers, providing shared constants, helpers, | ||
| /// and exception handling for connection tests. | ||
| /// </summary> | ||
| public abstract class IndexerProviderBase : IIndexerSearchProvider | ||
| { | ||
| protected readonly ILogger _logger; | ||
|
|
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| protected IndexerProviderBase(ILogger logger) | ||
| { | ||
| _logger = logger ?? throw new ArgumentNullException(nameof(logger)); | ||
| } | ||
|
|
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| public abstract string IndexerType { get; } | ||
|
|
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| /// <summary>Listenarr user-agent for standard indexer requests.</summary> | ||
| protected static string ListenarrUserAgent { get; } = | ||
| $"Listenarr/{typeof(IndexerProviderBase).Assembly.GetName().Version?.ToString() ?? "0.0.0"} (+https://github.com/listenarrs/listenarr)"; | ||
|
|
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| /// <summary>Browser-like user-agent for indexers that require it (e.g. MyAnonamouse).</summary> | ||
| protected const string BrowserUserAgent = | ||
| "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"; | ||
|
|
||
| /// <inheritdoc /> | ||
| public abstract Task<List<IndexerSearchResult>> SearchAsync( | ||
| Indexer indexer, | ||
| string query, | ||
| string? category = null, | ||
| Listenarr.Api.Models.SearchRequest? request = null); | ||
|
|
||
| /// <summary> | ||
| /// Implement the actual test logic. Exceptions are caught by <see cref="TestAsync"/>. | ||
| /// </summary> | ||
| protected abstract Task<IndexerTestResult> ExecuteTestAsync(Indexer indexer); | ||
|
|
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| /// <summary> | ||
| /// Wraps <see cref="ExecuteTestAsync"/> in shared exception handling | ||
| /// so individual providers only implement the happy path. | ||
| /// </summary> | ||
| public async Task<IndexerTestResult> TestAsync(Indexer indexer) | ||
| { | ||
| try | ||
| { | ||
| return await ExecuteTestAsync(indexer); | ||
| } | ||
| catch (Exception ex) when (ex is HttpRequestException | ||
| or TaskCanceledException | ||
| or JsonException | ||
| or UriFormatException | ||
| or System.Net.CookieException | ||
| or InvalidOperationException) | ||
| { | ||
| return LogAndFail(indexer, ex); | ||
| } | ||
| } | ||
|
|
||
| private IndexerTestResult LogAndFail(Indexer indexer, Exception ex) | ||
| { | ||
| _logger.LogWarning(ex, "{IndexerType} indexer '{Name}' test failed", | ||
| IndexerType, LogRedaction.SanitizeText(indexer.Name)); | ||
| return IndexerTestResult.Failed($"{IndexerType} test failed", ex.Message); | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| /* | ||
| * Listenarr - Audiobook Management System | ||
| * Copyright (C) 2024-2025 Listenarr Contributors | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published | ||
| * by the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| using System.Text.Json; | ||
| using Listenarr.Domain.Models; | ||
|
|
||
| namespace Listenarr.Api.Services.Search.Providers; | ||
|
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| public static class IndexerSettingsExtensions | ||
| { | ||
| /// <summary> | ||
| /// Try to parse a string value from the indexer's AdditionalSettings JSON. | ||
| /// </summary> | ||
| public static bool TryGetAdditionalSetting(this Indexer indexer, string key, out string? value) | ||
| { | ||
| value = null; | ||
|
|
||
| if (string.IsNullOrEmpty(indexer.AdditionalSettings)) | ||
| return false; | ||
|
|
||
| try | ||
| { | ||
| using var doc = JsonDocument.Parse(indexer.AdditionalSettings); | ||
| if (doc.RootElement.TryGetProperty(key, out var prop)) | ||
| { | ||
| value = prop.GetString(); | ||
| return true; | ||
| } | ||
| } | ||
| catch (JsonException) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* | ||
| * Listenarr - Audiobook Management System | ||
| * Copyright (C) 2024-2025 Listenarr Contributors | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published | ||
| * by the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| namespace Listenarr.Api.Services.Search.Providers | ||
| { | ||
| /// <summary> | ||
| /// Represents the outcome of an indexer connection test, including | ||
| /// whether the test succeeded and any diagnostic messages. | ||
| /// </summary> | ||
| public record IndexerTestResult | ||
| { | ||
| /// <summary>Whether the connection test passed.</summary> | ||
| public bool Success { get; init; } | ||
|
|
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| /// <summary>Human-readable summary shown to the user (e.g. "Indexer authentication successful").</summary> | ||
| public string? Message { get; init; } | ||
|
|
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| /// <summary>Error detail when <see cref="Success"/> is <c>false</c>; <c>null</c> on success.</summary> | ||
| public string? Error { get; init; } | ||
|
|
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| /// <summary>Create a successful test result.</summary> | ||
| public static IndexerTestResult Succeeded(string message) => | ||
| new() { Success = true, Message = message }; | ||
|
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| /// <summary>Create a failed test result.</summary> | ||
| public static IndexerTestResult Failed(string message, string error) => | ||
| new() { Success = false, Message = message, Error = error }; | ||
| } | ||
| } |
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This is so broad and could throw errors for unrelated bugs. What about propagate those to other handlers and use a dedicated exception type for provider validation failures?