145 lines
4.5 KiB
C#
145 lines
4.5 KiB
C#
using DramaLing.Api.Services.AI.Gemini;
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using System.Text.Json;
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namespace DramaLing.Api.Tests.Integration.Mocks;
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/// <summary>
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/// 測試用的 Mock Gemini Client
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/// 提供穩定可預測的 AI 服務回應，不依賴外部 API
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/// </summary>
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public class MockGeminiClient : IGeminiClient
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{
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/// <summary>
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/// 模擬 Gemini API 調用
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/// 根據 prompt 內容返回預定義的測試回應
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/// </summary>
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public async Task<string> CallGeminiAPIAsync(string prompt)
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{
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await Task.Delay(50); // 模擬 API 延遲
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// 根據 prompt 類型返回不同的 mock 回應
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if (prompt.Contains("generate distractors") || prompt.Contains("混淆選項"))
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{
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return GenerateDistractorsMockResponse(prompt);
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}
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if (prompt.Contains("analyze sentence") || prompt.Contains("句子分析"))
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{
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return GenerateSentenceAnalysisMockResponse(prompt);
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}
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if (prompt.Contains("synonyms") || prompt.Contains("同義詞"))
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{
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return GenerateSynonymsMockResponse(prompt);
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}
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// 預設回應
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return JsonSerializer.Serialize(new
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{
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response = "Mock response from Gemini API",
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timestamp = DateTime.UtcNow,
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prompt_length = prompt.Length
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});
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}
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/// <summary>
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/// 測試連線 - 在測試環境中永遠回傳成功
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/// </summary>
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public async Task<bool> TestConnectionAsync()
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{
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await Task.Delay(10);
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return true;
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}
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private string GenerateDistractorsMockResponse(string prompt)
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{
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// 從 prompt 中提取目標詞彙 (簡化邏輯)
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var targetWord = ExtractTargetWord(prompt);
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var distractors = targetWord.ToLower() switch
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{
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"hello" => new[] { "goodbye", "welcome", "thanks" },
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"beautiful" => new[] { "ugly", "plain", "ordinary" },
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"sophisticated" => new[] { "simple", "basic", "crude" },
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_ => new[] { "option1", "option2", "option3" }
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};
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return JsonSerializer.Serialize(new
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{
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distractors = distractors,
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target_word = targetWord,
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generated_at = DateTime.UtcNow
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});
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}
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private string GenerateSentenceAnalysisMockResponse(string prompt)
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{
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return JsonSerializer.Serialize(new
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{
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analysis = new
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{
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difficulty = "A2",
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grammar_points = new[] { "present simple", "adjectives" },
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vocabulary = new[] { "basic", "intermediate" },
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suggestions = new[] { "Good sentence structure", "Clear meaning" }
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},
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words = new[]
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{
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new
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{
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word = "example",
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translation = "範例",
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part_of_speech = "noun",
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difficulty = "A2",
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synonyms = new[] { "sample", "instance" }
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}
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},
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generated_at = DateTime.UtcNow
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});
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}
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private string GenerateSynonymsMockResponse(string prompt)
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{
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var targetWord = ExtractTargetWord(prompt);
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var synonyms = targetWord.ToLower() switch
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{
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"hello" => new[] { "hi", "greetings", "salutations" },
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"beautiful" => new[] { "gorgeous", "stunning", "lovely" },
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"sophisticated" => new[] { "refined", "elegant", "cultured" },
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_ => new[] { "synonym1", "synonym2", "synonym3" }
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};
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return JsonSerializer.Serialize(synonyms);
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}
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private string ExtractTargetWord(string prompt)
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{
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// 簡化的詞彙提取邏輯
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// 實際實作中可能會更複雜
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var words = prompt.Split(' ');
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// 尋找可能的目標詞彙
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foreach (var word in words)
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{
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var cleanWord = word.Trim('"', '\'', ',', '.', '!', '?').ToLower();
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if (cleanWord.Length > 2 && !IsCommonWord(cleanWord))
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{
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return cleanWord;
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}
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}
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return "unknown";
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}
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private bool IsCommonWord(string word)
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{
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var commonWords = new HashSet<string>
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{
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"the", "and", "or", "but", "for", "with", "from", "to", "of", "in", "on", "at",
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"generate", "create", "make", "find", "get", "give", "word", "words", "options"
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};
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return commonWords.Contains(word);
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}
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} |