#pragma once

#include <algorithm>
#include <array>
#include <cmath>

namespace mt_host {

struct TouchCircle { float x, y, radius; };

struct TouchLayout {
    // Attack, six skills, auto hunt, two bottom item quick slots.
    std::array<TouchCircle, 10> buttons;
    float scale;
};

inline TouchLayout make_touch_layout(float width, float height, float safe_inset, float minimum_target) {
    TouchLayout layout{};
    layout.scale = std::max(minimum_target / 52.0f,
        std::clamp(std::min(height / 600.0f, (width - 2 * safe_inset) / 800.0f), 0.65f, 1.35f));
    const float s = layout.scale;
    const float ax = width - safe_inset - 78 * s;
    // Leave the original status/menu strip clear below the lowest skill.
    const float ay = height - 136 * s;
    layout.buttons[0] = {ax, ay, 44 * s};
    // PORT: D2R Mobile's main-button + single skill arc arrangement, extended to six slots.
    // 24-degree spacing at radius 176 keeps even the expanded (1.25x) hit circles separate.
    for (int slot = 0; slot < 6; ++slot) {
        const float angle = (160.0f + 24.0f * slot) * 3.14159265f / 180.0f;
        layout.buttons[slot + 1] = {ax + std::cos(angle) * 176 * s,
                                  ay + std::sin(angle) * 176 * s, 28 * s};
    }
    // Keep the settings/toggle action outside the arc, away from repeated attack taps.
    layout.buttons[7] = {ax - 246 * s, ay - 84 * s, 26 * s};
    const float item_center = std::min(width / 2, layout.buttons[1].x - 114 * s);
    layout.buttons[8] = {item_center - 36 * s, height - 38 * s, 28 * s};
    layout.buttons[9] = {item_center + 36 * s, height - 38 * s, 28 * s};
    return layout;
}

} // namespace mt_host