#include "csv_loader.hpp"
#include <fstream>
#include <sstream>
#include <iostream>

std::vector<Record> load_csv(const std::string& filename) {
    std::vector<Record> data;
    std::ifstream file(filename);

    if (!file.is_open()) {
        throw std::runtime_error("Cannot open file: " + filename);
    }

    std::string line;

    // читаем первую строку (заголовок)
    std::getline(file, line);

    while (std::getline(file, line)) {
        std::stringstream ss(line);
        std::string item;

        Record row;

        std::getline(ss, item, ',');
        row.timestamp = std::stod(item);

        std::getline(ss, item, ',');
        row.open = std::stod(item);

        std::getline(ss, item, ',');
        row.high = std::stod(item);

        std::getline(ss, item, ',');
        row.low = std::stod(item);

        std::getline(ss, item, ',');
        row.close = std::stod(item);

        std::getline(ss, item, ',');
        row.volume = std::stod(item);

        data.push_back(row);
    }

    return data;
}