#include <span>
#include <algorithm>
#include <ranges>
#include <string>
#include <string_view>
#include <utility>
#include <vector>

#include "fmt/std.h"

#include "aoc/types.hpp"
#include "aoc/utils.hpp"

using namespace std::string_view_literals;
using namespace aoc::types;

// starts at 50
[[maybe_unused]]constexpr auto raw_str = R"(
987654321111111
811111111111119
234234234234278
818181911112111
)";

static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
    // std::string str{raw_str};
    auto str = aoc::read_text("./input.txt").value_or("");
    str = aoc::trim(str);

    fmt::print("INPUT\n");
    fmt::print("⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼⎽⎼⎻⎺⎻⎼\n");
    fmt::print("{}\n", str);
    fmt::print("{}\n", std::string(80, '-'));

    auto jolts_str = str | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
        return aoc::trim(std::string{std::begin(str), std::end(str)});
    }) | std::ranges::to<std::vector>();


    std::vector<u64> jolts{};
    jolts.reserve(jolts_str.size());
    for (auto const& jolt : jolts_str) {
        u64 largest = 0;
        for (usize i = 0; i < jolt.size(); ++i) {
            for (usize j = i + 1; j < jolt.size(); ++j) {
                auto const value = std::stoull(fmt::format("{}{}", jolt[i], jolt[j]));
                if (value > largest) largest = value;
            }
        }

        jolts.push_back(largest);
    }

    for (auto const& jolt : jolts) {
        fmt::print("{}\n", jolt);
    }

    auto sum = std::ranges::fold_left(jolts, u64(0), [&](auto a, auto v) {
        return a + v;
    });

    fmt::print("res: {}\n", sum);
}

auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
    try {
        entry({argv, std::next(argv, argc)});
    } catch (std::exception const& e) {
        fmt::print(stderr, "{}\n", e.what());
        return 1;
    }
    return 0;
}