constexpr auto SEARCH_EMPTY = "* SEARCH\r\n";
constexpr auto USERNAME = "XXXXXXXXXXXXXXXXXXXXXXX";
constexpr auto PASSWORD = "XXXXXXXXXXXXXXXXXXXXXX ";
#include <curl/curl.h>
#include <windows.h>
#include <algorithm>
#include <iostream>
#include <string.h>
#include <stdio.h>
#include <sstream>
#include <queue>
#include <string>
using namespace std;

string buffer;
string curslave("0");
string curdir;
bool optcekaj = 0, cekaj = 1;

struct MemoryStruct {
    char *memory;
    size_t size;
};

static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp) {
    size_t realsize = size * nmemb;
    struct MemoryStruct *mem = (struct MemoryStruct *)userp;
    char *ptr = (char *)realloc(mem->memory, mem->size + realsize + 1);
    if (ptr == NULL)
        return 0;
    mem->memory = ptr;
    memcpy(&(mem->memory[mem->size]), contents, realsize);
    mem->size += realsize;
    mem->memory[mem->size] = 0;
    return realsize;
}

int main(void) {
    CURL *curl;
    CURLcode res = CURLE_OK;
    struct curl_slist *recipients = NULL;
    struct MemoryStruct retr;
    FILE *f;
    fopen_s(&f, "test.txt", "w");

    do {
        do {
            curl = curl_easy_init();
        } while (!curl);
        retr.memory = (char *)malloc(1);
        retr.size = 0;
        curl_easy_setopt(curl, CURLOPT_USERNAME, USERNAME);
        curl_easy_setopt(curl, CURLOPT_PASSWORD, PASSWORD);
        curl_easy_setopt(curl, CURLOPT_URL, "imaps://imap.gmail.com:993/INBOX");
        curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "SEARCH UNSEEN");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&retr);
        res = curl_easy_perform(curl);
        if (retr.memory != NULL && retr.size > 0)
            buffer = retr.memory;
        free(retr.memory);
        curl_easy_cleanup(curl);
    } while (res != CURLE_OK);

    buffer.erase(remove_if(buffer.begin(), buffer.end(), [](char c) -> bool {return !isdigit(c) && c != ' '; }), buffer.end());

    stringstream ss(buffer);
    queue<int> lista;
    int tmp;
    while (ss >> tmp)
        lista.push(tmp);

    while (!lista.empty()) {
        FILE *file;
        fopen_s(&file, "test.txt", "w,ccs=UTF-8");
        do {
            do {
                curl = curl_easy_init();
            } while (!curl);
            curl_easy_setopt(curl, CURLOPT_USERNAME, USERNAME);
            curl_easy_setopt(curl, CURLOPT_PASSWORD, PASSWORD);
            curl_easy_setopt(curl, CURLOPT_URL, ("imaps://imap.gmail.com:993/INBOX/;MAILINDEX=" + to_string(lista.front())).c_str());
            curl_easy_setopt(curl, CURLOPT_WRITEDATA, file);
            res = curl_easy_perform(curl);

            curl_easy_cleanup(curl);
        } while (res != CURLE_OK);
        lista.pop();
        fclose(file);
    }

    return 0;
}