//
//  HBApiParams.m
//  FlyChat1
//
//  Created by Liv on 2022/3/6.
//

#import "HBApiParams.h"
#import <sys/utsname.h>
#import <mach/mach.h>
#import "CommonCrypto/CommonDigest.h"
#import "NSString+AES.h"


@implementation HBApiParams

/**
 client:结构为获取的当前的终端信息，参考字面义
 clientVer:当前开发的前端（app、pc、h5）版本号，参与验签
 cont:请求包体内容内容为空时则直接接留空，参与验签
 timestamp:时间戳，毫秒值，参与验签
 clientType：请求终端，传值为：ios android h5 web;参与验签
 apiVer：调用接口版本，默认为1 ；参与验签
 
 验签key:使用sha1(终端类型)转hex值获取；
 
 以上验签字段使用key=value结构拼接；按照字段排序key即可；
 生成的验签串如下：
 apiVer=1&clientType=web&clientVer=1&cont=哈哈哈&timestamp=1572760249513&key=CA84D1343B96BAA8137C943ED1860E522CACB238
 
 再将验签串进行md5加密转hex获得sign的值如下：
 最终生成的签名内容为:A6218946715FF5272527BFEADE70D022
 
 ***/
+ (NSDictionary *)fetchPostParams:(id)info encryption:(BOOL)encryption{
    
    NSMutableDictionary * tempInfo = [NSMutableDictionary dictionary];
    [tempInfo addEntriesFromDictionary:@{@"client":[self fetchClient]}];
    [tempInfo addEntriesFromDictionary:@{@"clientVer":@"1"}];
    [tempInfo addEntriesFromDictionary:@{@"apiVer":[self fetchApiVer]}];
    [tempInfo addEntriesFromDictionary:@{@"clientType":[self fetchClientType]}];
    [tempInfo addEntriesFromDictionary:@{@"timestamp":[self fetchTimestamp]}];
    [tempInfo addEntriesFromDictionary:@{@"param":@"param"}];
    
    if (info) {
        NSError *error;
        NSString * infoJson = @"{}";
        NSData * jsonData = [NSJSONSerialization dataWithJSONObject:info options:0 error:&error];
        if (jsonData) {
            infoJson = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
        }
        if (encryption) {
            infoJson = [infoJson aci_encryptWithAES];
            [tempInfo addEntriesFromDictionary:@{@"cont":infoJson}];
        } else {
            [tempInfo setValue:info forKey:@"cont"];
        }
    } else {
        [tempInfo addEntriesFromDictionary:@{@"cont":@""}];
    }
    [tempInfo addEntriesFromDictionary:@{@"sign":[self fetchMD5Sha1Sign:tempInfo]}];
    
    if ([tempInfo[@"cont"] isKindOfClass:[NSString class]] && [tempInfo[@"cont"] isEqualToString:@""]) {
        [tempInfo removeObjectForKey:@"cont"];
    }
    return tempInfo;
}

+ (NSDictionary *)fetchClient{
    NSDictionary * clientDic =  @{@"deviceId": [self fetchCurrentDeviceModel],
                                  @"osType":@"iOS",
                                  @"deviceType":@"ios",
                                  @"osVersion":@"1.0",
                                  @"appVersion":[self fetchAppVersion]};
    return clientDic;
}
+ (NSString *)fetchCurrentDeviceModel{
    struct utsname systemInfo;
    uname(&systemInfo);
    
    NSString *deviceModel = [NSString stringWithCString:systemInfo.machine
                                               encoding:NSASCIIStringEncoding];
    
    if ([deviceModel isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceModel isEqualToString:@"iPhone3,2"])    return @"iPhone 4";
    if ([deviceModel isEqualToString:@"iPhone3,3"])    return @"iPhone 4";
    if ([deviceModel isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceModel isEqualToString:@"iPhone5,1"])    return @"iPhone 5";
    if ([deviceModel isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
    if ([deviceModel isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
    if ([deviceModel isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceModel isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([deviceModel isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([deviceModel isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([deviceModel isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
    // 日行两款手机型号均为日本独占，可能使用索尼FeliCa支付方案而不是苹果支付
    if ([deviceModel isEqualToString:@"iPhone9,1"])    return @"iPhone 7";
    if ([deviceModel isEqualToString:@"iPhone9,2"])    return @"iPhone 7 Plus";
    if ([deviceModel isEqualToString:@"iPhone9,3"])    return @"iPhone 7";
    if ([deviceModel isEqualToString:@"iPhone9,4"])    return @"iPhone 7 Plus";
    if ([deviceModel isEqualToString:@"iPhone10,1"])   return @"iPhone_8";
    if ([deviceModel isEqualToString:@"iPhone10,4"])   return @"iPhone_8";
    if ([deviceModel isEqualToString:@"iPhone10,2"])   return @"iPhone_8_Plus";
    if ([deviceModel isEqualToString:@"iPhone10,5"])   return @"iPhone_8_Plus";
    if ([deviceModel isEqualToString:@"iPhone10,3"])   return @"iPhone X";
    if ([deviceModel isEqualToString:@"iPhone10,6"])   return @"iPhone X";
    if ([deviceModel isEqualToString:@"iPhone11,8"])   return @"iPhone XR";
    if ([deviceModel isEqualToString:@"iPhone11,2"])   return @"iPhone XS";
    if ([deviceModel isEqualToString:@"iPhone11,6"])   return @"iPhone XS Max";
    if ([deviceModel isEqualToString:@"iPhone11,4"])   return @"iPhone XS Max";
    if ([deviceModel isEqualToString:@"iPhone12,1"])   return @"iPhone 11";
    if ([deviceModel isEqualToString:@"iPhone12,3"])   return @"iPhone 11 Pro";
    if ([deviceModel isEqualToString:@"iPhone12,5"])   return @"iPhone 11 Pro Max";
    if ([deviceModel isEqualToString:@"iPhone12,8"])   return @"iPhone SE2";
    if ([deviceModel isEqualToString:@"iPhone13,1"])   return @"iPhone 12 mini";
    if ([deviceModel isEqualToString:@"iPhone13,2"])   return @"iPhone 12";
    if ([deviceModel isEqualToString:@"iPhone13,3"])   return @"iPhone 12 Pro";
    if ([deviceModel isEqualToString:@"iPhone13,4"])   return @"iPhone 12 Pro Max";
    if ([deviceModel isEqualToString:@"iPhone14,1"])   return @"iPhone 13 mini";
    if ([deviceModel isEqualToString:@"iPhone14,2"])   return @"iPhone 13";
    if ([deviceModel isEqualToString:@"iPhone14,3"])   return @"iPhone 13 Pro";
    if ([deviceModel isEqualToString:@"iPhone14,4"])   return @"iPhone 13 Pro Max";
    
    if ([deviceModel isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceModel isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceModel isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceModel isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceModel isEqualToString:@"iPod5,1"])      return @"iPod Touch (5 Gen)";
    if ([deviceModel isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceModel isEqualToString:@"iPad1,2"])      return @"iPad 3G";
    if ([deviceModel isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceModel isEqualToString:@"iPad2,2"])      return @"iPad 2";
    if ([deviceModel isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceModel isEqualToString:@"iPad2,4"])      return @"iPad 2";
    if ([deviceModel isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
    if ([deviceModel isEqualToString:@"iPad2,6"])      return @"iPad Mini";
    if ([deviceModel isEqualToString:@"iPad2,7"])      return @"iPad Mini (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([deviceModel isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPad3,3"])      return @"iPad 3";
    if ([deviceModel isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceModel isEqualToString:@"iPad3,5"])      return @"iPad 4";
    if ([deviceModel isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";
    if ([deviceModel isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
    if ([deviceModel isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
    if ([deviceModel isEqualToString:@"iPad4,4"])      return @"iPad Mini 2 (WiFi)";
    if ([deviceModel isEqualToString:@"iPad4,5"])      return @"iPad Mini 2 (Cellular)";
    if ([deviceModel isEqualToString:@"iPad4,6"])      return @"iPad Mini 2";
    if ([deviceModel isEqualToString:@"iPad4,7"])      return @"iPad Mini 3";
    if ([deviceModel isEqualToString:@"iPad4,8"])      return @"iPad Mini 3";
    if ([deviceModel isEqualToString:@"iPad4,9"])      return @"iPad Mini 3";
    if ([deviceModel isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
    if ([deviceModel isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (LTE)";
    if ([deviceModel isEqualToString:@"iPad5,3"])      return @"iPad Air 2";
    if ([deviceModel isEqualToString:@"iPad5,4"])      return @"iPad Air 2";
    if ([deviceModel isEqualToString:@"iPad6,3"])      return @"iPad Pro 9.7";
    if ([deviceModel isEqualToString:@"iPad6,4"])      return @"iPad Pro 9.7";
    if ([deviceModel isEqualToString:@"iPad6,7"])      return @"iPad Pro 12.9";
    if ([deviceModel isEqualToString:@"iPad6,8"])      return @"iPad Pro 12.9";
    
    if ([deviceModel isEqualToString:@"AppleTV2,1"])      return @"Apple TV 2";
    if ([deviceModel isEqualToString:@"AppleTV3,1"])      return @"Apple TV 3";
    if ([deviceModel isEqualToString:@"AppleTV3,2"])      return @"Apple TV 3";
    if ([deviceModel isEqualToString:@"AppleTV5,3"])      return @"Apple TV 4";
    
    if ([deviceModel isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceModel isEqualToString:@"x86_64"])       return @"Simulator";
    return deviceModel;
}

+ (NSString *)fetchTimestamp{
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:0]; // 获取当前时间0秒后的时间
    NSTimeInterval time = [date timeIntervalSince1970]*1000;// *1000 是精确到毫秒(13位),不乘就是精确到秒(10位)
    return [NSString stringWithFormat:@"%.0f", time];
}

+ (NSString *)fetchAppVersion {
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
    NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
    return app_Version;
}

+ (NSString *)fetchApiVer{
    NSString * apiVer = @"1";
    return apiVer;
}

+ (NSString *)fetchClientType{
    NSString * clientType = @"iOS";
    return clientType;
}

+ (NSString *)fetchMD5Sha1Sign:(NSDictionary *)info {
    NSString * signStr = [self fetchSignStr:info];
    NSString * key = [[self sha1WithString:[self fetchClientType]] uppercaseString];
    signStr = [signStr stringByAppendingFormat:@"&key=%@",key];
    NSString * signComp = [ [self MD5String:signStr] uppercaseString] ;
    return signComp;
}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ (NSString *)MD5String:(NSString *)signStr {
    const char *cstr = [signStr UTF8String];
    unsigned char result[16];
    CC_MD5(cstr, (CC_LONG)strlen(cstr), result);
    return [NSString stringWithFormat:
                @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
            result[0], result[1], result[2], result[3],
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
    ];
}
#pragma clang diagnostic pop


+ (NSString *)sha1WithString:(NSString *)string {
    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
    return [self sha1WithData:data];
}

+ (NSString *)sha1WithData:(NSData *)data {
    unsigned char *digest = NULL;
    
    // Malloc a buffer to hold hash.
    digest = malloc(CC_SHA1_DIGEST_LENGTH * sizeof(unsigned char));
    memset(digest, 0x0, CC_SHA1_DIGEST_LENGTH);
    CC_SHA1(data.bytes, (CC_LONG)data.length, digest);
    
    NSString *result = [self sha1WithDigest:digest];
    if (digest) {
        free(digest);
    }
    
    return result;
}
+ (NSString *)sha1WithDigest:(const unsigned char *)digest {
    if (!digest) {
        return nil;
    }
    NSMutableString *result = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * sizeof(unsigned char)];
    for (int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++) {
        [result appendFormat:@"%02x",digest[i]];
    }
    return result;
}

+ (NSString *)fetchSignStr:(NSDictionary *)info {
    NSString * signStr = @"";
    NSArray*sortedKeys=[[info allKeys]sortedArrayUsingSelector:@selector(compare:)];
    
    for(NSString * key in sortedKeys){
        if ([key isEqualToString:@"client"]) {
            continue;
        }
        
        id value = [info objectForKey:key] ;
        if ([key isEqualToString:@"cont"] && [value isKindOfClass:[NSString class]] && [value length] == 0) {
            continue;
        }
        NSString * valueStr = @"";
        if ([value isKindOfClass:[NSArray  class]] ) {
            valueStr = [self stringWithArray:value];
            valueStr = [valueStr stringByAppendingString:@"}"];
        }else if ([value isKindOfClass:[NSDictionary class]]){
            valueStr =  [NSString stringWithFormat:@"%@}",[self stringWithDict:value]];
        }else if ([value isKindOfClass:[NSString class]]){
            valueStr = value;
        }
        NSString * tempKeyV =  [NSString stringWithFormat:@"%@=%@&",key,valueStr];
        signStr = [signStr stringByAppendingFormat:@"%@",tempKeyV];
    }
    if (signStr.length >0) {
        signStr = [signStr substringToIndex:signStr.length-1];
    }
    return signStr;
}

+ (NSString*)stringWithArray:(NSArray*)array {
    NSString*str =@"[";
    for(id obj in array) {
        if([obj isKindOfClass:[NSDictionary class]]) {
            str = [self stringWithDict:obj];
            str = [str stringByAppendingFormat:@"}"];
        }else if([obj isKindOfClass:[NSArray class]]) {
            str = [self stringWithArray:obj];
            str = [str stringByAppendingFormat:@"]"];
        }
        
        if([str length] !=1) {
            str = [str stringByAppendingString:@","];
        }
    }
    return str;
}

+ (NSString*)stringWithDict:(NSDictionary*)dict{
    NSArray*keys = [dict allKeys];
    NSArray*sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1,id obj2) {
        return[obj1 compare:obj2 options:NSNumericSearch];
    }];
    
    NSString*str =@"{";
    for(NSString*categoryId in sortedArray) {
        id value = [dict objectForKey:categoryId];
        if([value isKindOfClass:[NSDictionary class]]) {
            value = [self stringWithDict:value];
            value = [NSString stringWithFormat:@"%@}",value];
        }
        if([str length] !=1) {
            str = [str stringByAppendingString:@","];
        }
        str = [str stringByAppendingFormat:@"\"%@\":\"%@\"",categoryId,value];
    }
    return str;
}
@end