#include "texture_manager.hpp"
#include "../logging/easylogging++.h"

std::shared_ptr<TextureManager> TextureManager::getInstance()
{
    if (TextureManager::singleton == nullptr)
    {
        TextureManager::singleton = std::make_shared<TextureManager>();
    }
    return TextureManager::singleton;
}

bool TextureManager::loadTexture(const std::string& textureName, const std::string& texturePath)
{
    if (this->doesTextureExist(textureName))
    {
        LOG(WARNING) << "Texture " << textureName << " already loaded";
        return false;
    }

    sf::Texture texture;
    if (!texture.loadFromFile(texturePath))
    {
        LOG(ERROR) << "Could not load texture " << textureName << " from " << texturePath;
        LOG(ERROR) << "Error: " << strerror(errno);
        return false;
    }

    LOG(INFO) << "Loaded texture " << textureName << " from " << texturePath;
    this->textures[textureName] = std::make_shared<sf::Texture>(texture);
    return true;
}

bool TextureManager::doesTextureExist(const std::string& textureName)
{
    return this->textures.find(textureName) != this->textures.end();
}

TextureManager::~TextureManager()
{
    // Unload all textures
    // Shared pointers will take care of the rest
    textures.clear();
}

std::shared_ptr<sf::Texture> TextureManager::getTexture(const std::string &textureName)
{
    if (!this->doesTextureExist(textureName))
    {
        return nullptr;
    }

    return this->textures[textureName];
}