package com.game.optimizer;

import registry.GameRegistry;
import java.io.*;
import java.nio.file.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;

public class IntelligentGameOptimizer {
    // 设备信息（示例值，实际使用需填写真实数据）
    private static class DeviceSpec {
        String model = "Xiaomi 14 Pro";
        String cpu = "Snapdragon 8 Gen 3";
        String gpu = "Adreno 750";
        int ramGB = 12;
        int androidVersion = 15;
    }

    // 运行时组件
    private final DeviceSpec device = new DeviceSpec();
    private final ExecutorService executor = Executors.newFixedThreadPool(4);
    private final AtomicBoolean isRunning = new AtomicBoolean(false);
    private final Map<String, GameOptimization> optimizations = new ConcurrentHashMap<>();

    // 主入口
    public void startOptimization() {
        if (isRunning.getAndSet(true)) {
            System.out.println("优化器已在运行中");
            return;
        }

        System.out.println("=== 游戏优化系统启动 ===");
        printDeviceInfo();
        validateGameRegistry();
        
        // 分阶段执行优化
        executor.execute(this::scanAndOptimizeGames);
        executor.execute(this::startMonitoring);
    }

    private void printDeviceInfo() {
        System.out.printf("设备: %s\nCPU: %s\nGPU: %s\n内存: %dGB\n安卓版本: %d\n",
            device.model, device.cpu, device.gpu, device.ramGB, device.androidVersion);
    }

    private void validateGameRegistry() {
        GameRegistry.games.forEach(game -> {
            if (game.iniPath.contains("请填写") || game.jsonPath.contains("请填写")) {
                System.err.println("游戏配置路径未填写: " + game.name);
            }
        });
    }

    private void scanAndOptimizeGames() {
        GameRegistry.games.forEach(game -> {
            try {
                // 阶段1：扫描配置文件
                GameConfig config = scanGameConfig(game);
                
                // 阶段2：生成优化配置
                GameConfig optimized = optimizeGameConfig(game, config);
                
                // 阶段3：应用优化
                applyOptimization(game, optimized);
                
                optimizations.put(game.id, new GameOptimization(game, config, optimized));
                
                System.out.printf("%s 优化完成 [FPS:%d 画质:%d]\n",
                    game.name, optimized.targetFps, optimized.gfxLevel);
                
            } catch (Exception e) {
                System.err.println("优化失败: " + game.name + " - " + e.getMessage());
            }
        });
    }

    private GameConfig scanGameConfig(GameRegistry.Game game) throws IOException {
        GameConfig config = new GameConfig();
        
        // 扫描INI配置
        if (Files.exists(Paths.get(game.iniPath))) {
            config.iniFiles = Files.list(Paths.get(game.iniPath))
                .filter(p -> p.toString().endsWith(".ini"))
                .map(Path::toFile)
                .collect(Collectors.toList());
        }
        
        // 扫描JSON配置
        if (Files.exists(Paths.get(game.jsonPath))) {
            config.jsonFiles = Files.list(Paths.get(game.jsonPath))
                .filter(p -> p.toString().endsWith(".json"))
                .map(Path::toFile)
                .collect(Collectors.toList());
        }
        
        return config;
    }

    private GameConfig optimizeGameConfig(GameRegistry.Game game, GameConfig original) {
        GameConfig optimized = new GameConfig();
        
        // 设备性能适配
        optimized.targetFps = calculateOptimalFps(game.targetFps);
        optimized.gfxLevel = calculateOptimalGfxLevel(game.gfxLevel);
        
        // 安卓版本优化
        if (device.androidVersion >= 15) {
            optimized.settings.put("Android15_Optimized", "true");
            optimized.settings.put("GraphicsAPI", "Vulkan");
        } else if (device.androidVersion >= 14) {
            optimized.settings.put("Android14_Optimized", "true");
        }
        
        // 游戏特定优化
        applyGameSpecificOptimizations(game.id, optimized);
        
        return optimized;
    }

    private int calculateOptimalFps(int baseFps) {
        if (device.ramGB >= 12 && device.androidVersion >= 14) {
            return Math.min(baseFps + 15, 120); // 高端设备可提升帧率
        }
        return baseFps;
    }

    private int calculateOptimalGfxLevel(int baseLevel) {
        if (device.ramGB >= 10) {
            return Math.min(baseLevel + 1, 5); // 高端设备提升画质
        } else if (device.ramGB <= 6) {
            return Math.max(baseLevel - 1, 2); // 低端设备降画质
        }
        return baseLevel;
    }

    private void applyGameSpecificOptimizations(String gameId, GameConfig config) {
        // 和平精英优化
        if (gameId.contains("pubg")) {
            config.settings.put("MobileContentScaleFactor", "0");
            config.settings.put("EnableGPUCrashDebugging", "false");
            
            if (device.androidVersion >= 14) {
                config.settings.put("r.PUBG.Android14.Optimization", "1");
            }
        }
        // 其他游戏优化规则...
    }

    private void applyOptimization(GameRegistry.Game game, GameConfig config) throws IOException {
        // 备份原始配置
        backupOriginalConfigs(game);
        
        // 写入优化后的INI配置
        for (File iniFile : config.iniFiles) {
            Properties props = new Properties();
            config.settings.forEach(props::setProperty);
            props.store(new FileOutputStream(iniFile), "Optimized by IntelligentGameOptimizer");
        }
        
        // 写入优化后的JSON配置
        for (File jsonFile : config.jsonFiles) {
            String json = config.settings.entrySet().stream()
                .map(e -> String.format("\"%s\":\"%s\"", e.getKey(), e.getValue()))
                .collect(Collectors.joining(",", "{", "}"));
            Files.write(jsonFile.toPath(), json.getBytes());
        }
    }

    private void backupOriginalConfigs(GameRegistry.Game game) throws IOException {
        Path backupDir = Paths.get("/sdcard/GameConfigBackups/" + game.id);
        Files.createDirectories(backupDir);
        
        // 备份INI文件
        if (Files.exists(Paths.get(game.iniPath))) {
            Files.list(Paths.get(game.iniPath))
                .filter(p -> p.toString().endsWith(".ini"))
                .forEach(p -> {
                    try {
                        Files.copy(p, backupDir.resolve(p.getFileName() + ".bak"));
                    } catch (IOException e) {
                        System.err.println("备份失败: " + p);
                    }
                });
        }
        
        // 备份JSON文件
        if (Files.exists(Paths.get(game.jsonPath))) {
            Files.list(Paths.get(game.jsonPath))
                .filter(p -> p.toString().endsWith(".json"))
                .forEach(p -> {
                    try {
                        Files.copy(p, backupDir.resolve(p.getFileName() + ".bak"));
                    } catch (IOException e) {
                        System.err.println("备份失败: " + p);
                    }
                });
        }
    }

    private void startMonitoring() {
        ScheduledExecutorService monitor = Executors.newSingleThreadScheduledExecutor();
        monitor.scheduleAtFixedRate(() -> {
            optimizations.values().forEach(opt -> {
                try {
                    checkAndReoptimize(opt);
                } catch (Exception e) {
                    System.err.println("监控异常: " + opt.game.name);
                }
            });
        }, 5, 5, TimeUnit.MINUTES); // 每5分钟检查一次
    }

    private void checkAndReoptimize(GameOptimization opt) throws IOException {
        // 模拟性能检测
        boolean needsReoptimize = new Random().nextDouble() > 0.7;
        
        if (needsReoptimize) {
            System.out.println("检测到性能变化，重新优化: " + opt.game.name);
            GameConfig newConfig = optimizeGameConfig(opt.game, opt.originalConfig);
            applyOptimization(opt.game, newConfig);
            opt.optimizedConfig = newConfig;
        }
    }

    public void stop() {
        if (isRunning.getAndSet(false)) {
            executor.shutdown();
            System.out.println("优化系统已停止");
        }
    }

    // 配置数据结构
    private static class GameConfig {
        List<File> iniFiles = new ArrayList<>();
        List<File> jsonFiles = new ArrayList<>();
        Map<String, String> settings = new HashMap<>();
        int targetFps;
        int gfxLevel;
    }

    // 优化记录
    private static class GameOptimization {
        final GameRegistry.Game game;
        final GameConfig originalConfig;
        GameConfig optimizedConfig;
        Date lastOptimized;

        GameOptimization(GameRegistry.Game game, GameConfig original, GameConfig optimized) {
            this.game = game;
            this.originalConfig = original;
            this.optimizedConfig = optimized;
            this.lastOptimized = new Date();
        }
    }

    // 使用示例
    public static void main(String[] args) {
        IntelligentGameOptimizer optimizer = new IntelligentGameOptimizer();
        
        // 启动优化系统
        optimizer.startOptimization();
        
        // 模拟运行1小时后停止
        try {
            TimeUnit.HOURS.sleep(1);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        } finally {
            optimizer.stop();
        }
    }
}
