return {
chords: chordProgression,
melody: melody,
rhythm: rhythm,
emotions: emotions,
style: style
};
}

// 智能和弦生成
generateChordProgression(emotions, style) {
const emotionWeights = this.calculateEmotionWeights(emotions);
const stylePatterns = this.getStylePatterns(style);

return this.selectOptimalProgression(emotionWeights, stylePatterns);
}

// 智能旋律生成
generateMelody(emotions, chords) {
const emotionProfile = this.createEmotionProfile(emotions);
const melodicContour = this.designMelodicContour(emotionProfile);

return this.generateNotesFromContour(melodicContour, chords);
}

// 遗传算法优化
optimizeMusic(musicData) {
const population = this.createInitialPopulation(musicData);

for (let generation = 0; generation < 10; generation++) {
const fitnessScores = population.map(individual =>
this.calculateFitness(individual, musicData.emotions)
);

const selected = this.selectByFitness(population, fitnessScores);
const newPopulation = this.crossoverAndMutate(selected);

population.splice(0, population.length, ...newPopulation);
}

return this.selectBestIndividual(population, musicData.emotions);
}
}

// 🚀 性能优化算法
class IntelligentMemoryManager {
constructor() {
this.cache = new Map();
this.usageStats = new Map();
this.cleanupInterval = null;
}

start() {
this.cleanupInterval = setInterval(() => {
this.performIntelligentCleanup();
}, 30000); // 每30秒清理一次
}

// 智能内存清理
performIntelligentCleanup() {
const now = Date.now();
const maxAge = 5 * 60 * 1000; // 5分钟

for (let [key, value] of this.cache) {
if (now - value.lastAccessed > maxAge) {
this.safeDelete(key, value);
}
}

// 压缩缓存
this.compressCache();
}

// 安全删除
safeDelete(key, value) {
try {
if (value.audioBuffer) {
value.audioBuffer.dispose?.();
}
this.cache.delete(key);
} catch (error) {
console.warn('清理缓存时出错:', error);
}
}

// 缓存压缩
compressCache() {
if (this.cache.size > 100) {
// 保留最近使用的50个项目
const entries = Array.from(this.cache.entries())
.sort((a, b) => b[1].lastAccessed - a[1].lastAccessed)
.slice(0, 50);

this.cache.clear();
entries.forEach(([key, value]) => this.cache.set(key, value));
}
}
}

class ComputationOptimizer {
constructor() {
this.workerPool = [];
this.taskQueue = [];
this.maxWorkers = navigator.hardwareConcurrency || 4;
}

// 并行计算优化
async parallelCompute(tasks) {
if (tasks.length === 0) return [];

const chunkSize = Math.ceil(tasks.length / this.maxWorkers);
const chunks = [];

for (let i = 0; i < tasks.length; i += chunkSize) {
chunks.push(tasks.slice(i, i + chunkSize));
}

const workers = chunks.map(chunk =>
this.createWorker().then(worker =>
worker.compute(chunk).finally(() => worker.terminate())
)
);

return Promise.all(workers).then(results =>
results.flat()
);
}

// 懒加载计算
createLazyComputer(computeFn) {
let cachedResult = null;
let isComputing = false;

return async () => {
if (cachedResult) return cachedResult;
if (isComputing) await this.waitForCompletion();

isComputing = true;
cachedResult = await computeFn();
isComputing = false;

return cachedResult;
};
}

// 增量计算
createIncrementalComputer(initialState, updateFn) {
let state = initialState;
let isUpdating = false;

return {
getState: () => state,
update: async (delta) => {
if (isUpdating) return;

isUpdating = true;
state = await updateFn(state, delta);
isUpdating = false;

return state;
}
};
}
}

// 📊 智能监控系统
startIntelligentMonitoring() {
// 性能监控
this.startPerformanceTracking();

// AI学习监控
this.startAILearningMonitor();

// 用户行为分析
this.startUserBehaviorAnalysis();

// 系统健康检查
this.startSystemHealthCheck();
}

startPerformanceTracking() {
let frameCount = 0;
let lastTime = performance.now();

const trackPerformance = () => {
frameCount++;
const currentTime = performance.now();

if (currentTime - lastTime >= 1000) {
this.systemState.performance.fps = Math.round(
(frameCount * 1000) / (currentTime - lastTime)
);

frameCount = 0;
lastTime = currentTime;

// 更新UI
this.updatePerformanceUI();
}