/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: ErrorStack.hpp
    Date: 2022-11-29
    Author: Reece
***/
#pragma once

namespace Aurora::Debug
{
    struct ErrorStack;

    struct ErrorStackAccessor;

    struct ThreadMessage
    {
        AuSPtr<ThreadMessage> pNextThreadMesage;

        AuSPtr<AuString> pStringMessage;
        AuOptional<EFailureCategory> eFailureCategory;
        AuOptional<StackTrace> optStackTrace;
        AuOptional<AuUInt> optOsErrorCode;
        AuUInt16 uDebugBuildSourceLineHint {};

        AUKN_SYM AuString ToString();
    };

    struct ErrorStack
    {
        AUKN_SYM ErrorStack();
        AUKN_SYM ~ErrorStack();

        inline bool HasCaptured()
        {
            CheckErrors();
            return bool(this->pHead);
        }

        inline bool HasMultipleOccurred()
        {
            return this->HasCaptured() && bool(this->pHead->pNextThreadMesage);
        }

        inline StackTrace *ToStackTrace()
        {
            if (!this->HasCaptured())
            {
                return {};
            }

            if (!this->pHead->optStackTrace)
            {
                return {};
            }

            return &this->pHead->optStackTrace.value();
        }

        inline AuOptional<AuString> ToString()
        {
            return this->HasCaptured() ? this->pHead->ToString() : AuString {};
        }

        inline AuSPtr<ThreadMessage> FirstMessage()
        {
            return this->pHead;
        }
        
    protected:
        AuSPtr<ThreadMessage> pHead;
        ErrorStack *pNext {};
        friend ErrorStackAccessor;
    };
}

using AuErrorStack = Aurora::Debug::ErrorStack;