//
//  CrashHandler.m
//  SellyCloudSDK_Example
//
//  Created by Caleb on 24/10/25.
//  Copyright © 2025 Caleb. All rights reserved.
//

#import "CrashHandler.h"
#include <libkern/OSAtomic.h>
#include <execinfo.h>
#include <signal.h>
#import <CocoaLumberjack/CocoaLumberjack.h>

@interface CrashHandler ()

@end

void HandleException(NSException *exception);
void SignalHandler(int signal);

@implementation CrashHandler

+ (void)load {
    [self installCrashHandler];
}

+ (void)installCrashHandler {
    // 1. 捕获 Objective-C 异常
    NSSetUncaughtExceptionHandler(&HandleException);
    
    // 2. 捕获 Unix 信号
    signal(SIGABRT, SignalHandler);
    signal(SIGILL, SignalHandler);
    signal(SIGSEGV, SignalHandler);
    signal(SIGFPE, SignalHandler);
    signal(SIGBUS, SignalHandler);
    signal(SIGPIPE, SignalHandler);
}

+ (NSString *)crashLogPath {
    NSString *doc = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
    return [doc stringByAppendingPathComponent:@"crash.log"];
}

+ (void)saveCrashToLocal:(NSString *)txt {
//    DDLogInfo(@"####crashed:");
    NSFileManager* fileManager = [NSFileManager defaultManager];
    BOOL isDir = NO;
    BOOL dataIsDir = NO;
    // fileExistsAtPath 判断一个文件或目录是否有效，isDirectory判断是否一个目录
    NSString* dirPath = [applicationDocumentsDirectory() stringByAppendingPathComponent:@"ErrorLog"];
    NSString* filePath = [dirPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.txt", CarshDate()]];
    BOOL existed = [fileManager fileExistsAtPath:dirPath isDirectory:&isDir];
    BOOL dataExisted = [fileManager fileExistsAtPath:filePath isDirectory:&dataIsDir];
    if (!(isDir == YES && existed == YES)) { //如果文件夹不存在
        [fileManager createDirectoryAtPath:dirPath withIntermediateDirectories:YES attributes:nil error:nil];
    }
    if (!(dataIsDir == YES && dataExisted == YES)) {
        [txt writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil];
    }
}

// 沙盒地址
NSString* applicationDocumentsDirectory(void)
{
    return [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
}

NSString* CarshDate(void)
{
    NSDateFormatter* formatter = [NSDateFormatter new];
    [formatter setDateFormat:@"yyyy-MM-dd_HHmmss"];

    return [formatter stringFromDate:[NSDate date]];
}

@end

// 崩溃时的回调函数
void HandleException(NSException* exception)
{
    NSArray* arr = [exception callStackSymbols];
    // 崩溃的原因  可以有崩溃的原因(数组越界,字典nil,调用未知方法...) 崩溃的控制器以及方法
    NSString* reason = [exception reason];
    NSString* name = [exception name];
    NSDictionary* userInfo = [exception userInfo];
    NSDictionary* infoDictionary = [[NSBundle mainBundle] infoDictionary];
    // app名称
    NSString* app_Name = [infoDictionary objectForKey:@"CFBundleDisplayName"];
    // app版本
    NSString* app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
    // app build版本
    NSString* app_build = [infoDictionary objectForKey:@"CFBundleVersion"];
    //手机型号
    NSString* phoneModel = [[UIDevice currentDevice] model];
    //手机系统版本
    NSString* phoneVersion = [[UIDevice currentDevice] systemVersion];

    NSString* txt = [NSString stringWithFormat:@"========异常错误报告========\n\n"
                     @"手机型号：%@    版本：%@\n"
                     @"App名称：%@    版本：%@（%@）\n\n"
                     @"name:%@\n"
                     @"userInfo:%@\n\n"
                     @"reason:\n%@\n\n"
                     @"callStackSymbols:\n%@",
                     phoneModel, phoneVersion,
                     app_Name, app_Version, app_build,
                     name, userInfo, reason,
                     [arr componentsJoinedByString:@"\n"]];

    [CrashHandler saveCrashToLocal:txt];
}


void SignalHandler(int signal) {
    // 获取调用栈
    void *callstack[128];
    int frames = backtrace(callstack, 128);
    char **strs = backtrace_symbols(callstack, frames);

    NSMutableString *stackStr = [NSMutableString string];
    for (int i = 0; i < frames; i++) {
        [stackStr appendFormat:@"%s\n", strs[i]];
    }

    NSString *content = [NSString stringWithFormat:@"Signal %d was raised.\nStack:\n%@", signal, stackStr];
    NSString *path = [CrashHandler crashLogPath];
    [content writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];

    free(strs);
}