//
//  JXCacheManager.m
//  AICity
//
//  Created by TogetherWatch on 2025-10-13.
//

#import "JXCacheManager.h"

@interface JXCacheManager ()

@property (nonatomic, strong) NSCache *memoryCache;
@property (nonatomic, strong) NSString *cacheDirectory;

@end

@implementation JXCacheManager

+ (instancetype)sharedManager {
    static JXCacheManager *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[self alloc] init];
    });
    return instance;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        _memoryCache = [[NSCache alloc] init];
        _memoryCache.countLimit = 100; // 最多缓存100个对象
        
        // 创建缓存目录
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
        NSString *cachesDirectory = [paths firstObject];
        _cacheDirectory = [cachesDirectory stringByAppendingPathComponent:@"JuXing"];
        
        NSFileManager *fileManager = [NSFileManager defaultManager];
        if (![fileManager fileExistsAtPath:_cacheDirectory]) {
            [fileManager createDirectoryAtPath:_cacheDirectory
                   withIntermediateDirectories:YES
                                    attributes:nil
                                         error:nil];
        }
    }
    return self;
}

#pragma mark - 分类缓存

- (void)saveCategoryList:(NSArray *)categories {
    if (!categories) return;
    
    // 内存缓存
    [self.memoryCache setObject:categories forKey:@"category_list"];
    
    // 磁盘缓存
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:@"categories.plist"];
    [NSKeyedArchiver archiveRootObject:categories toFile:filePath];
}

- (NSArray *)getCategoryList {
    // 先从内存缓存获取
    NSArray *cached = [self.memoryCache objectForKey:@"category_list"];
    if (cached) {
        return cached;
    }
    
    // 从磁盘缓存获取
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:@"categories.plist"];
    NSArray *diskCached = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    if (diskCached) {
        [self.memoryCache setObject:diskCached forKey:@"category_list"];
        return diskCached;
    }
    
    return nil;
}

#pragma mark - 短剧列表缓存

- (void)saveDramaList:(NSArray *)dramas
          forCategory:(NSString *)categoryId
                 page:(NSInteger)page {
    if (!dramas) return;
    
    NSString *key = [NSString stringWithFormat:@"drama_list_%@_%ld", categoryId ?: @"all", (long)page];
    
    // 内存缓存
    [self.memoryCache setObject:dramas forKey:key];
    
    // 磁盘缓存
    NSString *fileName = [NSString stringWithFormat:@"dramas_%@_p%ld.plist", categoryId ?: @"all", (long)page];
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:fileName];
    [NSKeyedArchiver archiveRootObject:dramas toFile:filePath];
}

- (NSArray *)getDramaListForCategory:(NSString *)categoryId
                                page:(NSInteger)page {
    NSString *key = [NSString stringWithFormat:@"drama_list_%@_%ld", categoryId ?: @"all", (long)page];
    
    // 先从内存缓存获取
    NSArray *cached = [self.memoryCache objectForKey:key];
    if (cached) {
        return cached;
    }
    
    // 从磁盘缓存获取
    NSString *fileName = [NSString stringWithFormat:@"dramas_%@_p%ld.plist", categoryId ?: @"all", (long)page];
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:fileName];
    NSArray *diskCached = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    if (diskCached) {
        [self.memoryCache setObject:diskCached forKey:key];
        return diskCached;
    }
    
    return nil;
}

#pragma mark - 短剧详情缓存

- (void)saveDramaDetail:(NSDictionary *)detail
              forDramaId:(NSString *)dramaId {
    if (!detail || !dramaId) return;
    
    NSString *key = [NSString stringWithFormat:@"drama_detail_%@", dramaId];
    
    // 内存缓存
    [self.memoryCache setObject:detail forKey:key];
    
    // 磁盘缓存
    NSString *fileName = [NSString stringWithFormat:@"drama_%@.plist", dramaId];
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:fileName];
    [NSKeyedArchiver archiveRootObject:detail toFile:filePath];
}

- (NSDictionary *)getDramaDetailForDramaId:(NSString *)dramaId {
    if (!dramaId) return nil;
    
    NSString *key = [NSString stringWithFormat:@"drama_detail_%@", dramaId];
    
    // 先从内存缓存获取
    NSDictionary *cached = [self.memoryCache objectForKey:key];
    if (cached) {
        return cached;
    }
    
    // 从磁盘缓存获取
    NSString *fileName = [NSString stringWithFormat:@"drama_%@.plist", dramaId];
    NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:fileName];
    NSDictionary *diskCached = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    if (diskCached) {
        [self.memoryCache setObject:diskCached forKey:key];
        return diskCached;
    }
    
    return nil;
}

#pragma mark - 缓存清理

- (void)clearAllCache {
    // 清除内存缓存
    [self.memoryCache removeAllObjects];
    
    // 清除磁盘缓存
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *files = [fileManager contentsOfDirectoryAtPath:self.cacheDirectory error:nil];
    for (NSString *file in files) {
        NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:file];
        [fileManager removeItemAtPath:filePath error:nil];
    }
    
    NSLog(@"剧星缓存已清除");
}

- (void)clearExpiredCache {
    // 简化实现：清除超过1天的缓存文件
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *files = [fileManager contentsOfDirectoryAtPath:self.cacheDirectory error:nil];
    NSDate *now = [NSDate date];
    
    for (NSString *file in files) {
        NSString *filePath = [self.cacheDirectory stringByAppendingPathComponent:file];
        NSDictionary *attributes = [fileManager attributesOfItemAtPath:filePath error:nil];
        NSDate *modificationDate = attributes[NSFileModificationDate];
        
        if (modificationDate) {
            NSTimeInterval interval = [now timeIntervalSinceDate:modificationDate];
            if (interval > 86400) { // 超过1天
                [fileManager removeItemAtPath:filePath error:nil];
            }
        }
    }
    
    NSLog(@"过期缓存已清除");
}

@end