#include <span>
#include <expected>

#include "aoc.hpp"
#include "ctre.hpp"

namespace aoc24 {
auto entry([[maybe_unused]]std::span<char const*> const& args) -> std::expected<void, aoc::error> {
    using namespace aoc::types;

    u32 day = 1;
    if (args.size() > 1) {
        if (ctre::match<"^[0-9]+$">(args[1]))
            day = std::stoul(args[1]);
        else
            fmt::print(stderr, "arg: {} is not a number\n", args[1]);
    }

    switch (day) {
    case 1: return day01(args);
    case 2: return day02(args);
    case 3: return day03(args);
    case 4: return day04(args);
    case 5: return day05(args);
    case 6: return day06(args);
    case 7: return day07(args);
    case 8: return day08(args);
    default:
        return aoc::make_error(fmt::format("day {}", day), std::errc::not_supported);
    }

    return {};
}
}