// ==UserScript==
// @name         修改网页颜色
// @namespace    http://tampermonkey.net/
// @version      0.1.2
// @author       yhu
// @description  点击文字修改颜色
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function hsvToRgb(h, s, v) {
        let r, g, b;
        const i = Math.floor(h * 6);
        const f = h * 6 - i;
        const p = v * (1 - s);
        const q = v * (1 - f * s);
        const t = v * (1 - (1 - f) * s);
        switch (i % 6) {
            case 0: r = v; g = t; b = p; break;
            case 1: r = q; g = v; b = p; break;
            case 2: r = p; g = v; b = t; break;
            case 3: r = p; g = q; b = v; break;
            case 4: r = t; g = p; b = v; break;
            default: r = v; g = p; b = q;
        }
        return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
    }

    document.body.addEventListener('click', function(e) {
        let target = e.target;
        if (target.nodeType === 3) {
            target = target.parentNode;
        }
        if (target.tagName && target.tagName.toLowerCase() === 'input') {
            return;
        }
        e.preventDefault();
        e.stopPropagation();
        const input = prompt('输入RGB或HSV', '255 255 255');
        if (input) {
            const parts = input.trim().split(/\s+/);
            if (parts.length === 3) {
                const a = parseFloat(parts[0]);
                const b = parseFloat(parts[1]);
                const c = parseFloat(parts[2]);
                if (!isNaN(a) && !isNaN(b) && !isNaN(c)) {
                    let r, g, bl;
                    if (a <= 1 && b <= 1 && c <= 1) {
                        const rgb = hsvToRgb(a, b, c);
                        r = rgb[0]; g = rgb[1]; bl = rgb[2];
                    } else {
                        r = parseInt(parts[0]);
                        g = parseInt(parts[1]);
                        bl = parseInt(parts[2]);
                    }
                    if (!isNaN(r) && !isNaN(g) && !isNaN(bl)) {
                        target.style.color = `rgb(${r}, ${g}, ${bl})`;
                    } else {
                        alert('无效');
                    }
                } else {
                    alert('请输入数字');
                }
            } else {
                alert('请输入三个数字(空格分离)');
            }
        }
    }, true);
})();