#include "pch.h"
#include "log.h"
#include "asset.h"

#ifdef __IOS__
#include <Foundation/Foundation.h>
#endif

#ifdef __ANDROID__
AAssetManager* Asset::m_am;
#endif

bool Asset::open(const char* path)
{
    LOG("Asset::open %s", path);
    m_current_path = path;
    std::string file_path = path;
#ifdef __ANDROID__
    if (!(m_asset = AAssetManager_open(m_am, path, AASSET_MODE_RANDOM)))
    {
        LOG("AAssetManager_open failed");
        return false;
    }
    m_len = (int)AAsset_getLength(m_asset);
    m_data = (uint8_t*)AAsset_getBuffer(m_asset);
#else
#ifdef __IOS__
    NSString* bundle_path = [[NSBundle mainBundle] bundlePath];
    std::string base = [bundle_path cStringUsingEncoding:1];
    file_path = base + "/" + path;
#endif
    if (!(m_fp = fopen(file_path.c_str(), "rb")))
    {
        LOG("errno = %d", errno);
        return false;
    }
    fseek(m_fp, 0, SEEK_END);
    m_len = (int)ftell(m_fp);
    fseek(m_fp, 0, SEEK_SET);
#endif
    return true;
}

glm::uint8_t* Asset::read_all()
{
#ifdef __ANDROID__
    return m_data;
#else
    if (!m_data)
    {
        m_data = new uint8_t[m_len];
        if (m_len != fread(m_data, 1, m_len, m_fp))
        {
            LOG("ASSET READ FAILED for %s", m_current_path.c_str());
            delete m_data;
            m_data = nullptr;
        }
    }
    return m_data;
#endif
}

void Asset::close()
{
#ifdef __ANDROID__
    AAsset_close(m_asset);
#else
    if (m_fp)
        fclose(m_fp);
    if (m_data)
        delete m_data;
    m_data = nullptr;
#endif
}