/* .SOL DOMAINS — Solana Name Service Lookup & Registration */

const SNS_API = 'https://sns-sdk-proxy.bonfida.workers.dev';
const SNS_REG = 'https://www.sns.id/domain/';
const SOLSCAN = 'https://solscan.io/account/';
const REFERRAL_WALLET = '9NuiHh5wgRPx69BFGP1ZR8kHiBENGoJrXs5GpZzKAyn8';

let walletAddress = null;
let currentTab = 'search';

// ─── DOM ────────────────────────────────────────────────────
const $ = s => document.querySelector(s);
const $$ = s => document.querySelectorAll(s);

document.addEventListener('DOMContentLoaded', () => {
    initTabs();
    initSearch();
    initWallet();
});

// ─── TABS ───────────────────────────────────────────────────
function initTabs() {
    $$('.sol-tab').forEach(tab => {
        tab.addEventListener('click', () => {
            const t = tab.dataset.tab;
            switchTab(t);
        });
    });
}

function switchTab(t) {
    currentTab = t;
    $$('.sol-tab').forEach(tab => tab.classList.toggle('active', tab.dataset.tab === t));
    $$('.sol-panel').forEach(p => p.classList.toggle('hidden', p.id !== `panel-${t}`));
    if (t === 'mydomains' && walletAddress) loadMyDomains();
}

// ─── SEARCH / LOOKUP ────────────────────────────────────────
function initSearch() {
    const input = $('#sol-search');
    const btn = $('#sol-search-go');
    if (!input || !btn) return;
    btn.addEventListener('click', () => doSearch());
    input.addEventListener('keydown', e => { if (e.key === 'Enter') doSearch(); });

    const revInput = $('#sol-reverse');
    const revBtn = $('#sol-reverse-go');
    if (revInput && revBtn) {
        revBtn.addEventListener('click', () => doReverse());
        revInput.addEventListener('keydown', e => { if (e.key === 'Enter') doReverse(); });
    }
}

async function doSearch() {
    const raw = $('#sol-search').value.trim().toLowerCase();
    if (!raw) return;
    const domain = raw.replace(/\.sol$/i, '');
    const results = $('#search-results');
    results.innerHTML = loadingHTML('RESOLVING DOMAIN...');

    try {
        const res = await fetch(`${SNS_API}/resolve/${domain}`);
        const data = await res.json();
        if (data.s === 'ok' && data.result) {
            await showTakenDomain(domain, data.result);
        } else {
            showAvailableDomain(domain);
        }
    } catch (err) {
        results.innerHTML = errorHTML(`Network error: ${err.message}`);
    }
}

async function showTakenDomain(domain, owner) {
    const results = $('#search-results');
    let favourite = null;
    try {
        const favRes = await fetch(`${SNS_API}/favourite-domain/${owner}`);
        const favData = await favRes.json();
        if (favData.s === 'ok') favourite = favData.result || null;
    } catch(e) {}

    results.innerHTML = `
        <div class="sol-result-card">
            <div class="sol-result-header">
                <div class="sol-result-domain">${esc(domain)}<span class="sol-ext">.sol</span></div>
                <div class="sol-result-status taken">REGISTERED</div>
            </div>
            <div class="sol-result-body">
                <div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">OWNER</span>
                        <div class="sol-result-value">
                            <a href="${SOLSCAN}${esc(owner)}" target="_blank" rel="noopener">${truncAddr(owner)}</a>
                        </div>
                    </div>
                    ${favourite ? `
                    <div class="sol-result-field">
                        <span class="sol-result-label">OWNER'S FAVOURITE</span>
                        <div class="sol-result-value">${esc(favourite)}.sol</div>
                    </div>` : ''}
                </div>
                <div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">SOLSCAN</span>
                        <div class="sol-result-value">
                            <a href="${SOLSCAN}${esc(owner)}" target="_blank" rel="noopener">View on Solscan ↗</a>
                        </div>
                    </div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">SNS</span>
                        <div class="sol-result-value">
                            <a href="${SNS_REG}${esc(domain)}" target="_blank" rel="noopener">View on SNS.id ↗</a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    `;
}

function showAvailableDomain(domain) {
    const results = $('#search-results');
    const len = domain.length;
    let priceEstimate = '';
    if (len <= 1) priceEstimate = '~750 USDC';
    else if (len === 2) priceEstimate = '~700 USDC';
    else if (len === 3) priceEstimate = '~640 USDC';
    else if (len === 4) priceEstimate = '~160 USDC';
    else priceEstimate = '~20 USDC';

    const regUrl = `${SNS_REG}${encodeURIComponent(domain)}?ref=${REFERRAL_WALLET}`;

    results.innerHTML = `
        <div class="sol-result-card">
            <div class="sol-result-header">
                <div class="sol-result-domain">${esc(domain)}<span class="sol-ext">.sol</span></div>
                <div class="sol-result-status available">AVAILABLE</div>
            </div>
            <div class="sol-result-body">
                <div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">LENGTH</span>
                        <div class="sol-result-value">${len} character${len !== 1 ? 's' : ''}</div>
                    </div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">ESTIMATED COST</span>
                        <div class="sol-price">
                            <span class="sol-price-amount">${priceEstimate.split(' ')[0].replace('~','')}</span>
                            <span class="sol-price-currency">${priceEstimate.split(' ')[1] || 'USDC'}</span>
                            <span class="sol-price-usd">(estimated)</span>
                        </div>
                    </div>
                </div>
                <div>
                    <div class="sol-result-field">
                        <span class="sol-result-label">REGISTRATION</span>
                        <div class="sol-result-value">Purchase your .sol domain</div>
                    </div>
                    <a href="${regUrl}" target="_blank" rel="noopener" class="sol-register-btn">REGISTER ${esc(domain.toUpperCase())}.SOL ↗</a>
                </div>
            </div>
        </div>
    `;
}

// ─── REVERSE LOOKUP ─────────────────────────────────────────
async function doReverse() {
    const addr = $('#sol-reverse').value.trim();
    if (!addr) return;

    const results = $('#reverse-results');
    results.innerHTML = loadingHTML('SCANNING WALLET...');

    try {
        const res = await fetch(`${SNS_API}/domains/${addr}`);
        const data = await res.json();

        // Normalise response to array — API may return various formats
        let domains = [];
        if (Array.isArray(data)) {
            domains = data;
        } else if (data && typeof data === 'object') {
            if (Array.isArray(data.result)) {
                domains = data.result;
            } else if (typeof data.result === 'string') {
                domains = [data.result];
            } else if (data.result && typeof data.result === 'object' && !Array.isArray(data.result)) {
                // Single domain object
                domains = [data.result];
            }
        }

        if (!domains || domains.length === 0) {
            results.innerHTML = `<div class="sol-empty">NO .SOL DOMAINS FOUND FOR THIS WALLET</div>`;
            return;
        }

        let favourite = null;
        try {
            const favRes = await fetch(`${SNS_API}/favourite-domain/${addr}`);
            const favData = await favRes.json();
            if (favData.s === 'ok') favourite = favData.result || null;
        } catch(e) {}

        results.innerHTML = `
            <div class="sol-stats-bar">
                <div class="sol-stat">DOMAINS: <span class="sol-stat-value">${domains.length}</span></div>
                ${favourite ? `<div class="sol-stat">FAVOURITE: <span class="sol-stat-value">${favourite}.sol</span></div>` : ''}
                <div class="sol-stat">WALLET: <span class="sol-stat-value">${truncAddr(addr)}</span></div>
            </div>
            <div class="sol-domains-grid">
                ${domains.map(d => {
                    const name = typeof d === 'string' ? d : (d.domain || d.name || String(d));
                    const isFav = favourite && name === favourite;
                    return `
                        <div class="sol-domain-card">
                            <div class="sol-domain-name">${esc(name)}<span class="sol-ext">.sol</span></div>
                            ${isFav ? '<div class="sol-domain-fav">★ FAVOURITE</div>' : ''}
                        </div>
                    `;
                }).join('')}
            </div>
        `;
    } catch(err) {
        results.innerHTML = errorHTML(`Network error: ${err.message}`);
    }
}

// ─── WALLET ─────────────────────────────────────────────────
let connectedProvider = null;

const WALLETS = [
    {
        name: 'PHANTOM',
        icon: '👻',
        detect: () => {
            const p = window.phantom?.solana;
            return (p && p.isPhantom) ? p : null;
        },
        url: 'https://phantom.app'
    },
    {
        name: 'JUPITER',
        icon: '🪐',
        detect: () => {
            if (window.jupiter?.solana) return window.jupiter.solana;
            if (window.solana?.isJupiter) return window.solana;
            return null;
        },
        url: 'https://jup.ag'
    },
    {
        name: 'SOLFLARE',
        icon: '🔆',
        detect: () => {
            const s = window.solflare;
            return (s && s.isSolflare) ? s : null;
        },
        url: 'https://solflare.com'
    },
    {
        name: 'BACKPACK',
        icon: '🎒',
        detect: () => {
            const b = window.backpack;
            return (b && b.isBackpack) ? b : null;
        },
        url: 'https://backpack.app'
    },
    {
        name: 'COINBASE',
        icon: '🔵',
        detect: () => window.coinbaseSolana || null,
        url: 'https://coinbase.com/wallet'
    },
    {
        name: 'TRUST',
        icon: '🛡️',
        detect: () => window.trustwallet?.solana || null,
        url: 'https://trustwallet.com'
    },
    {
        name: 'METAMASK',
        icon: '🦊',
        detect: () => {
            // MetaMask Solana injects at window.solana with isMetaMask
            if (window.solana?.isMetaMask) return window.solana;
            // Or check ethereum provider flags
            if (window.ethereum?.isMetaMask && window.ethereum?.solana) return window.ethereum.solana;
            return null;
        },
        url: 'https://metamask.io'
    },
];

function getAvailableWallets() {
    const available = [];
    const matchedProviders = new Set();

    for (const w of WALLETS) {
        try {
            const provider = w.detect();
            if (provider && !matchedProviders.has(provider)) {
                available.push({ ...w, provider });
                matchedProviders.add(provider);
            }
        } catch(e) {}
    }

    // Generic fallback: window.solana if nothing matched
    if (available.length === 0 && window.solana) {
        available.push({
            name: 'SOLANA WALLET',
            icon: '◈',
            provider: window.solana,
            url: '#'
        });
    }

    return available;
}

function initWallet() {
    const btn = $('#wallet-btn');
    if (!btn) return;
    btn.addEventListener('click', toggleWallet);
    createWalletModal();
}

function createWalletModal() {
    const modal = document.createElement('div');
    modal.id = 'wallet-modal';
    modal.className = 'sol-modal hidden';
    modal.innerHTML = `
        <div class="sol-modal-backdrop"></div>
        <div class="sol-modal-content">
            <div class="sol-modal-header">
                <span class="sol-modal-title">SELECT WALLET</span>
                <button class="sol-modal-close" id="modal-close">✕</button>
            </div>
            <div class="sol-modal-body" id="wallet-list"></div>
            <div class="sol-modal-footer">
                <span class="sol-modal-hint">No wallet? Install one to connect to Solana</span>
            </div>
        </div>
    `;
    document.body.appendChild(modal);
    modal.querySelector('.sol-modal-backdrop').addEventListener('click', closeModal);
    modal.querySelector('#modal-close').addEventListener('click', closeModal);
}

function openModal() {
    const modal = $('#wallet-modal');
    const list = $('#wallet-list');
    const available = getAvailableWallets();
    const detectedNames = new Set(available.map(w => w.name));

    let html = '';

    // Show detected wallets as clickable buttons
    if (available.length > 0) {
        html += '<div class="sol-wallet-divider">DETECTED</div>';
        html += available.map(w => `
            <button class="sol-wallet-option detected" data-wallet="${w.name}">
                <span class="sol-wallet-option-icon">${w.icon}</span>
                <span class="sol-wallet-option-name">${w.name}</span>
                <span class="sol-wallet-option-status detected">DETECTED</span>
            </button>
        `).join('');
    }

    // Show not-installed wallets as links (exclude detected ones)
    const notInstalled = WALLETS.filter(w => !detectedNames.has(w.name));
    if (notInstalled.length > 0) {
        html += '<div class="sol-wallet-divider">NOT INSTALLED</div>';
        html += notInstalled.map(w => `
            <a href="${w.url}" target="_blank" rel="noopener" class="sol-wallet-option not-installed">
                <span class="sol-wallet-option-icon">${w.icon}</span>
                <span class="sol-wallet-option-name">${w.name}</span>
                <span class="sol-wallet-option-status">INSTALL ↗</span>
            </a>
        `).join('');
    }

    if (available.length === 0) {
        html = '<div class="sol-empty" style="padding:1rem;">NO SOLANA WALLETS DETECTED<br><br>Install a Solana wallet extension to connect.</div>';
    }

    list.innerHTML = html;

    // Bind click handlers only for detected wallets (buttons, not links)
    list.querySelectorAll('.sol-wallet-option.detected').forEach(btn => {
        btn.addEventListener('click', (e) => {
            e.preventDefault();
            e.stopPropagation();
            const name = btn.dataset.wallet;
            const wallet = available.find(w => w.name === name);
            if (wallet) connectWallet(wallet);
        });
    });

    modal.classList.remove('hidden');
}

function closeModal() {
    const modal = $('#wallet-modal');
    if (modal) modal.classList.add('hidden');
}

async function toggleWallet() {
    if (walletAddress) {
        disconnectWallet();
        return;
    }
    openModal();
}

async function connectWallet(wallet) {
    try {
        closeModal();
        const resp = await wallet.provider.connect();
        walletAddress = resp.publicKey.toString();
        connectedProvider = wallet;
        updateWalletUI();
    } catch(err) {
        console.error('Wallet connection failed:', err);
        const status = $('#wallet-status');
        if (status) status.innerHTML = `<span style="color:rgba(255,50,50,0.8)">CONNECTION REJECTED</span>`;
    }
}

function disconnectWallet() {
    if (connectedProvider && connectedProvider.provider) {
        try { connectedProvider.provider.disconnect(); } catch(e) {}
    }
    walletAddress = null;
    connectedProvider = null;
    updateWalletUI();
}

function updateWalletUI() {
    const status = $('#wallet-status');
    const btn = $('#wallet-btn');

    if (walletAddress) {
        const wName = connectedProvider ? connectedProvider.name : 'WALLET';
        const wIcon = connectedProvider ? connectedProvider.icon : '◈';
        status.className = 'sol-wallet-status connected';
        status.innerHTML = `● CONNECTED VIA ${wIcon} ${wName} <span class="sol-wallet-address">${truncAddr(walletAddress)}</span>`;
        btn.className = 'sol-wallet-btn disconnect';
        btn.textContent = 'DISCONNECT';
    } else {
        status.className = 'sol-wallet-status';
        status.innerHTML = '○ NOT CONNECTED';
        btn.className = 'sol-wallet-btn';
        btn.textContent = 'CONNECT WALLET';
        const panel = $('#mydomains-content');
        if (panel) panel.innerHTML = `<div class="sol-empty">CONNECT WALLET TO VIEW YOUR DOMAINS</div>`;
    }
}

// ─── MY DOMAINS ─────────────────────────────────────────────
async function loadMyDomains() {
    if (!walletAddress) return;
    const content = $('#mydomains-content');
    content.innerHTML = loadingHTML('LOADING YOUR DOMAINS...');

    try {
        const res = await fetch(`${SNS_API}/domains/${walletAddress}`);
        const data = await res.json();

        // Normalise to array
        let domains = [];
        if (Array.isArray(data)) {
            domains = data;
        } else if (data && typeof data === 'object') {
            if (Array.isArray(data.result)) {
                domains = data.result;
            } else if (typeof data.result === 'string') {
                domains = [data.result];
            } else if (data.result && typeof data.result === 'object') {
                domains = [data.result];
            }
        }

        let favourite = null;
        try {
            const favRes = await fetch(`${SNS_API}/favourite-domain/${walletAddress}`);
            const favData = await favRes.json();
            if (favData.s === 'ok') favourite = favData.result || null;
        } catch(e) {}

        if (!domains || domains.length === 0) {
            const regUrl = `${SNS_REG}?ref=${REFERRAL_WALLET}`;
            content.innerHTML = `
                <div class="sol-empty">
                    NO .SOL DOMAINS FOUND<br>
                    <a href="${regUrl}" target="_blank" rel="noopener" style="color:#14F195; font-size:0.7rem">Register one on SNS.id ↗</a>
                </div>
            `;
            return;
        }

        content.innerHTML = `
            <div class="sol-stats-bar">
                <div class="sol-stat">YOUR DOMAINS: <span class="sol-stat-value">${domains.length}</span></div>
                ${favourite ? `<div class="sol-stat">FAVOURITE: <span class="sol-stat-value">${favourite}.sol</span></div>` : ''}
            </div>
            <div class="sol-domains-grid">
                ${domains.map(d => {
                    const name = typeof d === 'string' ? d : (d.domain || d.name || String(d));
                    const isFav = favourite && name === favourite;
                    return `
                        <div class="sol-domain-card">
                            <div class="sol-domain-name">${esc(name)}<span class="sol-ext">.sol</span></div>
                            ${isFav ? '<div class="sol-domain-fav">★ FAVOURITE</div>' : ''}
                        </div>
                    `;
                }).join('')}
            </div>
        `;
    } catch(err) {
        content.innerHTML = errorHTML(`Network error: ${err.message}`);
    }
}

// ─── HELPERS ────────────────────────────────────────────────
function truncAddr(a) {
    if (!a || a.length < 12) return a;
    return a.slice(0, 6) + '...' + a.slice(-4);
}

function esc(s) {
    const d = document.createElement('div');
    d.textContent = s;
    return d.innerHTML;
}

function loadingHTML(msg) {
    return `<div class="sol-loading"><div class="sol-loading-spinner"></div><div class="sol-loading-text">${msg}</div></div>`;
}

function errorHTML(msg) {
    return `<div class="sol-error">ERROR // ${msg}</div>`;
}