#include"Syncers/Download.h"

#include<exception>
#include<iostream>
#include<fstream>

#include<cpr/cpr.h>

using std::cout;
using std::endl;
using std::exception;
using std::ofstream;
using std::string;

using Models::API;
using Models::Song;
using Models::Token;

namespace Syncers
{
    #pragma
    Download::Download() { }
    Download::Download(API api)
    {
        this->api = api;
        this->api.endpoint = "song/data";
    }
    Download::Download(string filePath)
    {
        downloadFilePath = filePath;
    }
    #pragma Constructors


    #pragma
    void Download::downloadSong(const Token token, Song song)
    {
        try
        {
            string url = retrieveUrl(song);
            song.songPath.append("track.mp3");
            cout<<"song path "<<song.songPath<<endl;
            string auth{token.tokenType};
            auth.append(" " + token.accessToken);
            
            auto r = cpr::Get(cpr::Url(url),
                    cpr::Header{{"Content-type", "audio/mpeg"},
                                {"Authorization", auth}});
                

            int statusCode = r.status_code;

            if (statusCode == OK) {
                song.data = r.text;
                saveSong(song);
            }


            cout<<"finsihed with status code "<<statusCode<<endl;
        }
        catch (exception e)
        {
            auto msg = e.what();
            cout<<msg<<endl;
        }
    }

    string Download::retrieveUrl(Song song)
    {
        string url{api.url + "api/" + api.version + "/" + 
            api.endpoint + "/"};

        url.append(std::to_string(song.id));
        cout<<"url "<<url<<endl;

        return url;
    }

    void Download::saveSong(Song& song)
    {
        cout<<"\nSaving song to: "<<song.songPath<<endl;
        int bufferLength = song.data.length();
        const char *data = song.data.c_str();
        cout<<"buff length  "<<bufferLength<<endl;

        ofstream saveSong{song.songPath, std::ios::binary};
        saveSong.write(data, bufferLength);
        saveSong.close();
    }
    #pragma Functions
}