Novel/XiaoShuoHui/TFReader/Classes/Other/Lib/TFLanguageManager/TFLanguageManager.m

//
//  TFLanguageManager.m
//  WXReader
//
//  Created by 谢腾飞 on 2020/11/20.
//  Copyright © 2020 xtfei_2011@126.com. All rights reserved.
//

#import "TFLanguageManager.h"
#import "WXYZ_TouchAssistantView.h"

static NSString *kUserLanguage = @"kUserLanguage";
@interface TFLanguageManager ()
// 语言包 Bundle
@property (nonatomic ,strong ,class) NSBundle *languageBundle;
// 本地语言名称
@property (nonatomic ,strong ,class) NSString *userLanguageName;
@end

@implementation TFLanguageManager
@dynamic languageBundle;
@dynamic userLanguageName;

static NSBundle *_languageBundle = nil;

+ (NSString *)stringWithKey:(NSString *)key
{
    if (self.languageBundle) {
        return [self.languageBundle localizedStringForKey:key value:nil table:@"InfoPlist"] ?: key;
    } else {
        return NSLocalizedString(key, nil);
    }
}

+ (void)setLanguageType:(TFLanguageType)type
{
    [[NSUserDefaults standardUserDefaults] setValue:type == TFLanguageTypeDefault ? nil : NSStringFromLocalizedLanguage(type) forKey:kUserLanguage];
    
    _languageBundle = nil;
    
    [[WXYZ_TouchAssistantView sharedManager] closeButtonClick];
    [[NSNotificationCenter defaultCenter] postNotificationName:Notification_Switch_Language object:nil];
}

+ (NSString *)stringWithKey:(NSString *)key languageType:(TFLanguageType)type
{
    if (type == TFLanguageTypeDefault) {
        return TFLocalizedString(key);
    }
    
    NSString *t_language = NSStringFromLocalizedLanguage(type);
    NSString *path = [[NSBundle mainBundle] pathForResource:t_language ofType:@"lproj"];
    NSBundle *languageBundle = [NSBundle bundleWithPath:path];
    
    if (languageBundle) {
        return [languageBundle localizedStringForKey:key value:nil table:@"InfoPlist"] ? : key;
    } else {
        return NSLocalizedString(key, nil);
    }
}

+ (TFLanguageType)userLanguage
{
    return TFLanguageTypeFromNSString([[NSUserDefaults standardUserDefaults] valueForKey:kUserLanguage]);
}

+ (TFLanguageType)localizedLanguage
{
    TFLanguageType language = TFLanguageTypeFromNSString([[NSUserDefaults standardUserDefaults] valueForKey:kUserLanguage]);
    NSString *t_launguage = NSStringFromLocalizedLanguage(language);
    return TFLanguageTypeFromNSString(t_launguage);
}

+ (NSString *)serverLocalized
{
    return [self serverLanguageType:[self localizedLanguage]];
}

+ (NSString *)serverLanguageType:(TFLanguageType)type
{
    switch (type) {
        case TFLanguageTypeSimplifiedChinese:
            return @"zh";
            
        case TFLanguageTypeTraditionalChinese:
            return @"tw";
            
        case TFLanguageTypeEnglish:
            return @"en";
            
        case TFLanguageTypeTail:
            return @"th";
            
        case TFLanguageTypeDefault: {
            NSString *t_str = NSStringFromLocalizedLanguage(type);
            TFLanguageType t_language = TFLanguageTypeFromNSString(t_str);
            return [self serverLanguageType:t_language];
        }
    }
}

// 根据语言名称字符串获取指定语言枚举类型
TFLanguageType TFLanguageTypeFromNSString(NSString *language) {
    if ([language hasPrefix:@"en"]) {           // 英文
        return TFLanguageTypeEnglish;
    }

    if ([language hasPrefix:@"zh-Hans"]) {      // 简体中文
        return TFLanguageTypeSimplifiedChinese;
    }
    
    if ([language hasPrefix:@"zh-Hant"]) {      // 繁体中文
        return TFLanguageTypeTraditionalChinese;
    }
    
    if ([language hasPrefix:@"th"]) {           // 泰语
        return TFLanguageTypeTail;
    }
    
    return TFLanguageTypeDefault;
}

// 根据语言枚举类型获取指定语言名称(如果匹配不到则会返回默认语言)
NSString * NSStringFromLocalizedLanguage(TFLanguageType language) {
    switch (language) {
        case TFLanguageTypeEnglish:
            return @"en";
            
        case TFLanguageTypeSimplifiedChinese:
            return @"zh-Hans";
            
        case TFLanguageTypeTraditionalChinese:
            return @"zh-Hant";
            
        case TFLanguageTypeTail:
            return @"th";
            
        case TFLanguageTypeDefault: {
            NSArray *languages = [NSLocale preferredLanguages];
            TFLanguageType t_language = TFLanguageTypeFromNSString(languages.firstObject);
            if (t_language == TFLanguageTypeDefault) return TF_Default_Language;
            return NSStringFromLocalizedLanguage(t_language);
        }
    }
}

+ (NSBundle *)languageBundle
{
    if (!_languageBundle) {
        NSString *path = [[NSBundle mainBundle] pathForResource:self.userLanguageName ofType:@"lproj"];
        _languageBundle = [NSBundle bundleWithPath:path];
    }
    return _languageBundle;
}

+ (NSString *)userLanguageName
{
    NSString *userLanguage = [[NSUserDefaults standardUserDefaults] valueForKey:kUserLanguage];
    if (userLanguage) return userLanguage;
    return NSStringFromLocalizedLanguage(TFLanguageTypeDefault);
}
@end