document.addEventListener('DOMContentLoaded', () => {
    const inputArea = document.getElementById('input-code');
    const outputArea = document.getElementById('output-code');
    const protectBtn = document.getElementById('protect-btn');
    const terminal = document.getElementById('terminal');
    const copyBtn = document.getElementById('copy-btn');

    function log(message, type = 'info') {
        const entry = document.createElement('div');
        entry.className = `log-entry log-${type}`;
        const time = new Date().toLocaleTimeString([], { hour12: false });
        entry.textContent = `[${time}] ${message}`;
        terminal.appendChild(entry);
        terminal.scrollTop = terminal.scrollHeight;
    }

    async function sleep(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
    }

    protectBtn.addEventListener('click', async () => {
        const code = inputArea.value.trim();
        if (!code) {
            log('Error: Source code is empty.', 'warn');
            return;
        }

        const preset = document.getElementById('vm-preset').value;
        const junk = document.getElementById('junk-code').value;
        const encrypt = document.getElementById('encrypt-strings').value;

        protectBtn.disabled = true;
        protectBtn.textContent = 'Processing...';
        
        terminal.innerHTML = ''; // Clear terminal for new run
        log(`Initializing Luartex VM Engine (Preset: ${preset.toUpperCase()})...`, 'info');
        await sleep(400);
        log(`Analyzing source AST (${code.length} bytes)...`, 'info');
        await sleep(300);
        log(`Mapping opcodes to virtual registers...`, 'info');
        await sleep(500);
        log(`Injecting Anti-Tamper & Anti-Hook logic...`, 'info');
        await sleep(400);
        
        if (preset === 'obsidian' || preset === 'iron') {
            log(`Applying high-entropy encryption layer...`, 'info');
            await sleep(600);
        }

        try {
            const response = await fetch('process.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ code, preset, junk, encrypt })
            });

            const data = await response.json();

            if (data.success) {
                outputArea.value = data.protected_code;
                log('Bytecode generation complete.', 'success');
                log(`Final Entropy: ${data.stats.entropy}`, 'info');
                log(`Protected Size: ${data.stats.protected_size} bytes`, 'info');
                log('VM successfully virtualized and locked.', 'success');
            } else {
                log(`Error: ${data.error}`, 'warn');
            }
        } catch (err) {
            log(`Critical Failure: ${err.message}`, 'warn');
        } finally {
            protectBtn.disabled = false;
            protectBtn.textContent = 'Protect Script';
        }
    });

    copyBtn.addEventListener('click', () => {
        if (!outputArea.value) return;
        navigator.clipboard.writeText(outputArea.value);
        const originalText = copyBtn.textContent;
        copyBtn.textContent = 'COPIED!';
        setTimeout(() => copyBtn.textContent = originalText, 2000);
    });
});