8chan keyboard shortcuts

// ==UserScript==
// @name         8chan Keybinds
// @namespace    alleyesonus
// @version      2025-04-16
// @description  Add keybinds to format text on 8chan.moe
// @author       Anko
// @match        https://8chan.moe/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Function to wrap selected text with the appropriate tag
    function wrapSelection(tag) {
        const textarea = document.activeElement;

        if (textarea && textarea.tagName === 'TEXTAREA') {
            const start = textarea.selectionStart;
            const end = textarea.selectionEnd;
            const selectedText = textarea.value.substring(start, end);

            if (selectedText) {
                // Split selected text into lines and wrap each line (skip empty lines)
                const lines = selectedText.split('\n');
                const wrappedLines = lines.map(line => {
                    // Skip empty lines
                    if (line.trim() === '') return '';

                    switch (tag) {
                        case 'spoiler':
                            return `[spoiler]${line}[/spoiler]`;
                        case 'greenText':
                            return `>${line}`;
                        case 'pinktext':
                            return `<${line}`;
                        case 'doom':
                            return `[doom]${line}[/doom]`;
                        case 'bizniz':
                            return `==${line}==`;
                        case 'moe':
                            return `[moe]${line}[/moe]`;
                        default:
                            return line;
                    }
                });

                const wrappedText = wrappedLines.join('\n');

                // Insert the wrapped text back into the textarea
                const beforeText = textarea.value.substring(0, start);
                const afterText = textarea.value.substring(end);
                textarea.value = beforeText + wrappedText + afterText;
            }
        }
    }

    // Event listener for keydown events to capture keybinds
    document.addEventListener('keydown', function(event) {
        const textarea = document.activeElement;

        // Only respond if a textarea is focused
        if (!textarea || textarea.tagName !== 'TEXTAREA') return;

        if (event.ctrlKey) {
            let tag = null;
            switch (event.key) {
                case 's':
                    tag = 'spoiler';
                    break;
                case 'p':
                    tag = 'pinktext';
                    break;
                case 'm':
                    tag = 'moe';
                    break;
                case 'd':
                    tag = 'doom';
                    break;
                case 'b':
                    tag = 'bizniz';
                    break;
                case 'g':
                    tag = 'greenText';
                    break;
                default:
                    return;
            }

            event.preventDefault();
            wrapSelection(tag);
        }
    });
})();