#include <filesystem>
#include <kubecontrol/KubePod.hpp>
#include <map>
#include <vector>

namespace kubecontrol 
{

    KubePod::KubePod(std::string Label, std::string Uuid, std::string ContainerImage):Label_(Label),Uuid_(Uuid),
    ContainerImage_(ContainerImage),EnvirmonentVars_()
    {
        ContainerRegistry_ = "kmaster.ti.unibw-hamburg.de:30808";
        EnvirmonentVars_ = std::map<std::string, std::string>();
        
        this->PathToYaml_ = "config/pods/" + this->Label_ + ".yaml";

        std::filesystem::directory_entry entry("config/pods");
        if(entry.exists() != true) 
        {
            std::filesystem::create_directory("config/pods");
        }


    }

    std::string KubePod::getUUID()
    {
        return this->Uuid_;
    }

    std::string KubePod::getLabel()
    {
        return this->Label_;
    }

    void  KubePod::setEnvironmentVar(std::string key, std::string val)
    {
        EnvirmonentVars_.emplace(key,val);
    }

    std::map<std::string, std::string> KubePod::GetEnvironmentVars()
    {
        return EnvirmonentVars_;
    }

    std::string* KubePod::GetEnvironmentVar(std::string key)
    {
         if(EnvirmonentVars_.contains(key)) {
            return &EnvirmonentVars_[key];
        } else {
            return nullptr;
        }
    }

    std::string  KubePod::createYAML()
    {
        YAML::Node node;

        node["apiVersion"] = "v1";
        node["kind"] = "Pod";
        node["metadata"]["name"] = this->Uuid_;
        node["metadata"]["labels"]["app.kubernetes.io/name"] = this->Label_;

        node["spec"]["containers"][0]["name"] = this->Label_+"-container";
        node["spec"]["containers"][0]["image"] = this->ContainerRegistry_ + "/" + this->ContainerImage_;

        int i = 0;
        for (auto item :EnvirmonentVars_) {
            node["spec"]["containers"][0]["env"][i]["name"] = item.first;
            node["spec"]["containers"][0]["env"][i]["value"] = R"(item.second)";

        }

  
        node["spec"]["restartPolicy"] = "Never";

        std::ofstream fout(this->PathToYaml_);
        fout << node;
        fout.close();
        
        return this->PathToYaml_;

    }

    nlohmann::json  KubePod::start(std::string apiAddress,std::string token)
    {
        std::string curlURL = apiAddress;
        std::string AuthString = "Authorization: Bearer " + token;

        std::list<std::string> headers;
        headers.push_back(AuthString);
        headers.push_back("Content-Type: application/yaml");


        curlpp::Cleanup cleaner;
        curlpp::Easy request;

        WriterMemoryClass mWriterChunk;  
        curlpp::types::WriteFunctionFunctor functor = std::bind(&WriterMemoryClass::WriteMemoryCallback, &mWriterChunk, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
        curlpp::options::WriteFunction *test = new curlpp::options::WriteFunction(functor);
        request.setOpt(test);
        
        request.setOpt(new curlpp::options::HttpHeader(headers));

        request.setOpt(new curlpp::options::Url(curlURL));

        request.setOpt(new curlpp::options::SslVerifyPeer(false));

        request.setOpt(new curlpp::options::Post(true));


        if(std::filesystem::exists(this->PathToYaml_) != true) 
        {
            this->createYAML();
        }
            std::ifstream is;
            is.open (this->PathToYaml_, std::ios::binary );
            is.seekg (0, std::ios::end);
            long length = is.tellg();
            is.seekg (0, std::ios::beg);
            char *buffer = new char [length];
            is.read (buffer,length);



        request.setOpt(new curlpp::options::PostFields(buffer));

        request.perform();
        auto response = mWriterChunk.getResponse();
        return  nlohmann::json::parse(response);
    }

    nlohmann::json  KubePod::stop(std::string apiAddress,std::string token)
    {
        std::string curlURL = apiAddress+ this->Uuid_;
        std::string AuthString = "Authorization: Bearer " + token;

        std::list<std::string> headers;
        headers.push_back(AuthString);


        curlpp::Cleanup cleaner;
        curlpp::Easy request;

        WriterMemoryClass mWriterChunk;  
        curlpp::types::WriteFunctionFunctor functor = std::bind(&WriterMemoryClass::WriteMemoryCallback, &mWriterChunk, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
        curlpp::options::WriteFunction *writefunction = new curlpp::options::WriteFunction(functor);
        request.setOpt(writefunction);

        request.setOpt(new curlpp::options::HttpHeader(headers));
        request.setOpt(new curlpp::options::Url(curlURL));

        
        request.setOpt(new curlpp::options::SslVerifyPeer(false));


        request.setOpt(new curlpp::options::CustomRequest("DELETE"));
        // request.setOpt(new curlpp::options::Verbose(true));


        request.perform();
        auto response = mWriterChunk.getResponse();
        return  nlohmann::json::parse(response);
    }

    nlohmann::json  KubePod::getInfo(std::string apiAddress,std::string token)
    {
        std::string curlURL = apiAddress;
        std::string AuthString = "Authorization: Bearer " + token;

        std::list<std::string> headers;
        headers.push_back(AuthString);


        curlpp::Cleanup cleaner;
        curlpp::Easy request;

        WriterMemoryClass mWriterChunk;  

        curlpp::types::WriteFunctionFunctor functor = std::bind(&WriterMemoryClass::WriteMemoryCallback, &mWriterChunk, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
        
        curlpp::options::WriteFunction *test = new curlpp::options::WriteFunction(functor);
        request.setOpt(test);
        
        request.setOpt(new curlpp::options::HttpHeader(headers));

        request.setOpt(new curlpp::options::Url(curlURL));
     
        request.setOpt(new curlpp::options::SslVerifyPeer(false));


        request.perform();
        auto response = mWriterChunk.getResponse();
        return nlohmann::json::parse(response);
    }

}