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

    File: auStringUtils.hpp
    Date: 2022-2-1
    File: AuroraUtils.hpp
    File: auROXTLUtils.hpp
    Date: 2021-6-9
    Author: Reece
***/
#pragma once

static auline bool AuStringContains(const AuString &value, const AuString &subpattern)
{
    return value.find(subpattern) != AuString::npos;
}

static auline bool AuEndsWith(AuString const &value, AuString const &ending)
{
    if (ending.size() > value.size()) return false;
    return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
}

static auline bool AuStartsWith(AuString const &value, AuString const &starting)
{
#if defined(AU_STRING_IS_TINYUTF_EXPERIMENT)
    return value.starts_with(starting);
#else
    return value.rfind(starting, 0) == 0;
#endif
}

#if defined(AU_STRING_IS_TINYUTF_EXPERIMENT)

static AuString AuStringTransform(const AuString &in, const AuSupplierConsumer<AuUInt32, AuUInt32> &out)
{
    AuString cpy = in;
    for (int i = 0; i < cpy.length(); i++)
    {
        cpy[i] = out(cpy[i]);
    }
    return cpy;
}

static auline AuString AuToUpper(const AuString &in)
{
    return AuStringTransform(in, std::toupper);
}


static auline AuString AuToLower(const AuString &in)
{
    return AuStringTransform(in, std::toupper);
}

#else

template <class T>
static auline AuString AuToStringASCIIOp(T op, const AuString &in)
{
    AuString ret;
    ret.resize(in.size());
    std::transform(in.begin(), in.end(), ret.begin(), [=](const char &c)
    {
        return op(c);
    });
    return ret;
}

static auline AuString AuToLower(const AuString &in)
{
    return AuToStringASCIIOp<int(*)(int)>(std::tolower, in);
}

static auline AuString AuToUpper(const AuString &in)
{
    return AuToStringASCIIOp<int(*)(int)>(std::toupper, in);
}
#endif

static auline AuString &AuReplaceAll(AuString &str, const AuString &from, const AuString &to)
{
    size_t start_pos = 0;
    while ((start_pos = str.find(from, start_pos)) != std::string::npos)
    {
        str.replace(start_pos, from.length(), to);
        start_pos += to.length(); // Handles case where 'to' is a substring of 'from'
    }
    return str;
}

// i told myself not to copy this, required a split function twice, now here we are :D
static auline AuList<AuString> AuSplitString(const AuString &str, const AuString &delim, bool ignoreEmpty = true)
{
    AuList<AuString> tokens;
    AuUInt prev = 0, pos = 0;
    tokens.reserve(str.size() / 16);
    do
    {
        pos = str.find(delim, prev);
        if (pos == AuString::npos) pos = str.length();
        auto token = str.substr(prev, pos - prev);
        if ((!token.empty()) && ignoreEmpty) tokens.push_back(token);
        prev = pos + delim.length();
    }
    while (pos < str.length() && prev < str.length());
    return tokens;
}

#if !defined(AURORA_RUNTIME_TO_STRING)
    #define AURORA_RUNTIME_TO_STRING std::to_string
#endif

template <class T>
static auline AuString AuToString(const T &obj)
{
#if defined(_AUHAS_FMT)
    // locale independent and better optimized!
    return fmt::format("{}", obj);
#else
    // TODO: to_chars (locale independent)
    return AURORA_RUNTIME_TO_STRING(obj);
#endif
}