//
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// HMEmoticonManager.m
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// 表情键盘
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//
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// Created by 刘凡 on 16/3/3.
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// Copyright © 2016年 itcast. All rights reserved.
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//
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#import "HMEmoticonManager.h"
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#import "NSBundle+HMEmoticon.h"
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#import "HMEmoticonAttachment.h"
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/// 每页显示的表情数量
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static NSInteger kEmoticonsCountOfPage = 20;
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/// 命名空间常量
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NSString *const HMEmoticonNamespace = @"cn.itcast";
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/// 默认用户标识符
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NSString *const HMEmoticonDefaultUserIdentifier = @"DefaultUser";
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/// 表情文件名
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NSString *const HMEmoticonFileName = @".emoticons.json";
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@implementation HMEmoticonManager {
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NSMutableArray <HMEmoticon *> *_recentEmoticonList;
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}
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#pragma mark - 单例 & 构造函数
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+ (instancetype)sharedManager {
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static id instance;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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instance = [[self alloc] init];
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});
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return instance;
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}
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- (instancetype)init {
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self = [super init];
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if (self) {
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_packages = [NSMutableArray array];
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[self loadPackages];
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}
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return self;
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}
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#pragma mark - 字符串转换
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- (NSAttributedString *)emoticonStringWithString:(NSString *)string font:(UIFont *)font textColor:(UIColor *)textColor {
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NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]
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initWithString:string
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attributes:@{NSFontAttributeName: font,
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NSForegroundColorAttributeName: textColor}];
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NSString *pattern = @"\\[.*?\\]";
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NSRegularExpression *regx = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:NULL];
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NSArray *matches = [regx matchesInString:string options:0 range:NSMakeRange(0, string.length)];
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for (NSTextCheckingResult *result in matches.reverseObjectEnumerator) {
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NSRange range = [result rangeAtIndex:0];
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NSString *str = [string substringWithRange:range];
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HMEmoticon *emoticon = [self emoticonWithString:str];
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if (emoticon != nil) {
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NSAttributedString *emoticonString = [HMEmoticonAttachment emoticonStringWithEmoticon:emoticon font:font textColor:textColor];
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[attributedString replaceCharactersInRange:range withAttributedString:emoticonString];
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}
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}
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return attributedString.copy;
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}
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- (HMEmoticon *)emoticonWithString:(NSString *)string {
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NSPredicate *predicate = [NSPredicate predicateWithFormat:@"chs == %@", string];
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HMEmoticon *emoticon = nil;
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for (NSInteger i = 1; i < _packages.count; i++) {
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HMEmoticonPackage *package = _packages[i];
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NSArray *filter = [package.emoticonsList filteredArrayUsingPredicate:predicate];
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if (filter.count == 1) {
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emoticon = filter[0];
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break;
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}
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}
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return emoticon;
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}
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#pragma mark - 数据源方法
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- (NSInteger)numberOfPagesInSection:(NSInteger)section {
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HMEmoticonPackage *package = _packages[section];
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return ((NSInteger)package.emoticonsList.count - 1) / kEmoticonsCountOfPage + 1;
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}
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- (NSArray *)emoticonsWithIndexPath:(NSIndexPath *)indexPath {
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HMEmoticonPackage *package = self.packages[indexPath.section];
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NSInteger location = indexPath.item * kEmoticonsCountOfPage;
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NSInteger length = kEmoticonsCountOfPage;
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// 判断是否越界
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if ((location + length) > package.emoticonsList.count) {
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length = package.emoticonsList.count - location;
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}
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NSRange range = NSMakeRange(location, length);
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return [package.emoticonsList subarrayWithRange:range];
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}
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#pragma mark - 最近使用表情
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- (void)addRecentEmoticon:(HMEmoticon *)emoticon {
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// 0. 表情计数 ++
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emoticon.times++;
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// 1. 判断表情是否已经存在
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if (![_recentEmoticonList containsObject:emoticon]) {
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[_recentEmoticonList addObject:emoticon];
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}
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// 2. 排序
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[_recentEmoticonList sortUsingComparator:^NSComparisonResult(HMEmoticon *obj1, HMEmoticon *obj2) {
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return obj1.times < obj2.times;
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}];
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// 3. 更新最近表情包
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[self updateRecentPackage];
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// 4. 保存表情包
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[self saveRecentEmoticonList];
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}
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/// 更新最近表情包数组
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- (void)updateRecentPackage {
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NSInteger length = _recentEmoticonList.count < kEmoticonsCountOfPage ? _recentEmoticonList.count : kEmoticonsCountOfPage;
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_packages[0].emoticonsList = [_recentEmoticonList subarrayWithRange:NSMakeRange(0, length)].mutableCopy;
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}
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/// 保存最近表情数组
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- (void)saveRecentEmoticonList {
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NSMutableArray *jsonDict = [NSMutableArray array];
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for (HMEmoticon *emoticon in _recentEmoticonList) {
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[jsonDict addObject:[emoticon dictionary]];
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}
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NSData *data = [NSJSONSerialization dataWithJSONObject:jsonDict options:NSJSONWritingPrettyPrinted error:NULL];
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[data writeToFile:[self filePathForRecentEmoticon] atomically:YES];
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}
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/// 加载最近表情数组
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///
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/// @return 最近表情数组
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- (NSMutableArray <HMEmoticon *>*)loadRecentEmoticonList {
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NSMutableArray *arrayM = [NSMutableArray array];
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NSData *data = [NSData dataWithContentsOfFile:[self filePathForRecentEmoticon]];
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if (data == nil) {
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return arrayM;
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}
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NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL];
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for (NSDictionary *dict in array) {
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NSPredicate *predicate = [NSPredicate predicateWithFormat:@"chs CONTAINS %@ || code CONTAINS %@", dict[@"chs"], dict[@"code"]];
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for (NSInteger i = 1; i < _packages.count; i++) {
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HMEmoticonPackage *package = _packages[i];
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NSArray *filter = [package.emoticonsList filteredArrayUsingPredicate:predicate];
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if (filter.count == 1) {
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[arrayM addObject:filter[0]];
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break;
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}
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}
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}
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return arrayM;
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}
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/// 最近表情文件路径
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- (NSString *)filePathForRecentEmoticon {
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NSString *dir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).lastObject;
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return [[dir stringByAppendingPathComponent:self.userIdentifier] stringByAppendingString:HMEmoticonFileName];
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}
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#pragma mark - 加载表情包数据
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- (void)loadPackages {
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// 1. 读取 emoticons.plist
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NSString *path = [[NSBundle hm_emoticonBundle] pathForResource:@"emoticons.plist" ofType:nil];
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NSArray *array = [NSArray arrayWithContentsOfFile:path];
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// 2. 遍历数组，生成 packages 模型
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for (NSDictionary *dict in array) {
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[_packages addObject:[HMEmoticonPackage packageWithDict:dict]];
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}
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// 3. 加载最近使用表情列表
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_recentEmoticonList = [self loadRecentEmoticonList];
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// 4. 更新最近表情包
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[self updateRecentPackage];
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}
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#pragma mark - 用户标识符
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@synthesize userIdentifier = _userIdentifier;
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- (void)setUserIdentifier:(NSString *)userIdentifier {
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_userIdentifier = userIdentifier.copy;
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_recentEmoticonList = [self loadRecentEmoticonList];
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[self updateRecentPackage];
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}
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- (NSString *)userIdentifier {
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if (_userIdentifier == nil) {
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_userIdentifier = HMEmoticonDefaultUserIdentifier;
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}
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return [NSString stringWithFormat:@"%@.%@", HMEmoticonNamespace, _userIdentifier];;
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}
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@end
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