package org.saturnclient.ui;

import org.saturnclient.common.provider.GLFWProvider;

public class Utils {
    public static boolean isHovering(int mouseX, int mouseY, int elementWidth, int elementHeight, float elementScale) {
        return mouseX >= 0 &&
                mouseX <= (elementWidth * elementScale) &&
                mouseY >= 0 &&
                mouseY <= (elementHeight * elementScale);
    }

    public static char getCharFromKey(int keyCode, int modifiers) {
        boolean shift = (modifiers & GLFWProvider.GLFW_MOD_SHIFT) != 0;

        // A-Z
        if (keyCode >= GLFWProvider.GLFW_KEY_A && keyCode <= GLFWProvider.GLFW_KEY_Z) {
            return (char) (shift
                    ? 'A' + (keyCode - GLFWProvider.GLFW_KEY_A)
                    : 'a' + (keyCode - GLFWProvider.GLFW_KEY_A));
        }

        // 0-9
        if (keyCode >= GLFWProvider.GLFW_KEY_0 && keyCode <= GLFWProvider.GLFW_KEY_9) {
            return shift
                    ? ")!@#$%^&*(".charAt(keyCode - GLFWProvider.GLFW_KEY_0)
                    : (char) ('0' + (keyCode - GLFWProvider.GLFW_KEY_0));
        }

        // Special characters
        return switch (keyCode) {
            case GLFWProvider.GLFW_KEY_SPACE -> ' ';
            case GLFWProvider.GLFW_KEY_PERIOD -> shift ? '>' : '.';
            case GLFWProvider.GLFW_KEY_COMMA -> shift ? '<' : ',';
            case GLFWProvider.GLFW_KEY_MINUS -> shift ? '_' : '-';
            case GLFWProvider.GLFW_KEY_EQUAL -> shift ? '+' : '=';
            case GLFWProvider.GLFW_KEY_SEMICOLON -> shift ? ':' : ';';
            case GLFWProvider.GLFW_KEY_APOSTROPHE -> shift ? '"' : '\'';
            case GLFWProvider.GLFW_KEY_SLASH -> shift ? '?' : '/';
            case GLFWProvider.GLFW_KEY_BACKSLASH -> shift ? '|' : '\\';
            case GLFWProvider.GLFW_KEY_LEFT_BRACKET -> shift ? '{' : '[';
            case GLFWProvider.GLFW_KEY_RIGHT_BRACKET -> shift ? '}' : ']';
            case GLFWProvider.GLFW_KEY_GRAVE_ACCENT -> shift ? '~' : '`';
            default -> '\0';
        };
    }

    /**
     * A display name from an id: each underscore-separated word capitalized, so
     * "black_hole_white" becomes "Black Hole White".
     */
    public static String nameFromId(String id) {
        StringBuilder builder = new StringBuilder();
        for (String word : id.split("_")) {
            if (word.isEmpty()) {
                continue;
            }
            if (!builder.isEmpty()) {
                builder.append(' ');
            }
            builder.append(Character.toUpperCase(word.charAt(0))).append(word.substring(1));
        }
        return builder.toString();
    }
}