83 lines
2.5 KiB
C#
83 lines
2.5 KiB
C#
namespace DramaLing.Api.Services;
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/// <summary>
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/// 測驗模式選擇服務介面
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/// </summary>
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public interface IReviewModeSelector
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{
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List<string> GetPlannedTests(string userCEFRLevel, string wordCEFRLevel);
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string GetNextTestType(List<string> plannedTests, List<string> completedTestTypes);
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}
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/// <summary>
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/// 測驗模式選擇服務實現
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/// </summary>
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public class ReviewModeSelector : IReviewModeSelector
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{
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private readonly ILogger<ReviewModeSelector> _logger;
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public ReviewModeSelector(ILogger<ReviewModeSelector> logger)
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{
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_logger = logger;
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}
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/// <summary>
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/// 根據CEFR等級獲取預定的測驗類型列表
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/// </summary>
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public List<string> GetPlannedTests(string userCEFRLevel, string wordCEFRLevel)
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{
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var userLevel = GetCEFRLevel(userCEFRLevel);
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var wordLevel = GetCEFRLevel(wordCEFRLevel);
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var difficulty = wordLevel - userLevel;
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_logger.LogDebug("Planning tests for user {UserCEFR} vs word {WordCEFR}, difficulty: {Difficulty}",
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userCEFRLevel, wordCEFRLevel, difficulty);
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if (userCEFRLevel == "A1")
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{
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// A1學習者：基礎保護機制
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return new List<string> { "flip-memory", "vocab-choice", "vocab-listening" };
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}
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else if (difficulty < -10)
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{
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// 簡單詞彙：應用練習
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return new List<string> { "sentence-fill", "sentence-reorder" };
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}
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else if (difficulty >= -10 && difficulty <= 10)
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{
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// 適中詞彙：全方位練習
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return new List<string> { "sentence-fill", "sentence-reorder", "sentence-speaking" };
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}
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else
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{
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// 困難詞彙：基礎重建
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return new List<string> { "flip-memory", "vocab-choice" };
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}
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}
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/// <summary>
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/// 獲取下一個測驗類型
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/// </summary>
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public string GetNextTestType(List<string> plannedTests, List<string> completedTestTypes)
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{
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var nextTest = plannedTests.FirstOrDefault(test => !completedTestTypes.Contains(test));
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return nextTest ?? string.Empty;
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}
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/// <summary>
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/// CEFR等級轉換為數值
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/// </summary>
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private int GetCEFRLevel(string cefrLevel)
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{
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return cefrLevel switch
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{
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"A1" => 20,
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"A2" => 35,
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"B1" => 50,
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"B2" => 65,
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"C1" => 80,
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"C2" => 95,
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_ => 50 // 預設B1
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};
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}
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} |