#include "postgresHandler.h"
#include <iostream>
#include <regex>
#include <stdexcept>

#define INT_INDEX 2
#define STRING_INDEX 3
#define LIST_OF_INT_INDEX 4
#define NULL_INDEX 5

const pqxx::result execute_query(pqxx::work &t_transaction,
                                 std::string_view t_query) {
    return t_transaction.exec(t_query);
}

void display_query_result(const pqxx::result &t_r) {
    const int nb_columns = t_r.columns();
    for (const auto &row : t_r) {
        for (int i = 0; i < nb_columns; i++) {
            std::cout << row[i].c_str() << " | ";
        }
        std::cout << std::endl;
    }
}

static const unsigned int
get_type_of_regex_iterator(std::sregex_iterator t_sregex_it) {
    std::array<int, 4> types{INT_INDEX, STRING_INDEX, LIST_OF_INT_INDEX,
                             NULL_INDEX};
    for (const int &type : types) {
        if ((*t_sregex_it)[type] != "") {
            return type;
        }
    }
    throw std::invalid_argument("regex iterator input is invalid");
}

void add_cards_to_database(const std::string &t_cards, pqxx::work &t_tx) {
    // TODO: to complete
    std::regex key_regex(
        "\"[^\"?]+\":(([0-9]+)|(\"[^\"?]*\")|(\\[[0-9,]*\\])|(null))");

    auto words_begin =
        std::sregex_iterator(t_cards.begin(), t_cards.end(), key_regex);
    auto words_end = std::sregex_iterator();
    std::string insert_query; // TODO: complete: add base first "insert into..."
    for (auto it = words_begin; it != words_end; ++it) {
        const unsigned int type_index = get_type_of_regex_iterator(it);
        // TODO: format info depending on type_index then add it to insert_query
        std::cout << (*it)[type_index].str() << std::endl;
    }
}