// Web3 Wallet Simulator Script

class Web3Simulator {
    constructor() {
        this.isConnected = false;
        this.walletAddress = '';
        this.network = 'Ethereum';
        this.balance = 12.75;
        this.transactions = [];
        this.initElements();
        this.bindEvents();
        this.createBackgroundElements();
    }

    initElements() {
        // Buttons
        this.connectBtn = document.getElementById('connect-btn');
        this.simulateBtn = document.getElementById('simulate-btn');
        this.disconnectBtn = document.getElementById('disconnect-btn');
        this.clearTxBtn = document.getElementById('clear-tx');
        this.sendBtn = document.getElementById('send-btn');
        this.executeBtn = document.getElementById('execute-btn');

        // Display elements
        this.connectText = document.getElementById('connect-text');
        this.walletStatus = document.getElementById('wallet-status');
        this.walletAddressEl = document.getElementById('wallet-address');
        this.connectionIndicator = document.getElementById('connection-indicator');
        this.statusMessage = document.getElementById('status-message');
        this.networkName = document.getElementById('network-name');
        this.balanceEl = document.getElementById('balance');
        this.txCount = document.getElementById('tx-count');
        this.transactionsContainer = document.getElementById('transactions-container');
        this.contractAction = document.getElementById('contract-action');
        this.contractDetails = document.getElementById('contract-details');
    }

    bindEvents() {
        this.connectBtn.addEventListener('click', () => this.toggleConnection());
        this.simulateBtn.addEventListener('click', () => this.simulateTransaction());
        this.disconnectBtn.addEventListener('click', () => this.disconnectWallet());
        this.clearTxBtn.addEventListener('click', () => this.clearTransactions());
        this.sendBtn.addEventListener('click', () => this.sendTransaction());
        this.executeBtn.addEventListener('click', () => this.executeContractCall());
        this.contractAction.addEventListener('change', (e) => this.updateContractDetails(e.target.value));
    }

    createBackgroundElements() {
        const bgContainer = document.createElement('div');
        bgContainer.className = 'bg-elements';
        
        for (let i = 0; i < 3; i++) {
            const element = document.createElement('div');
            element.className = 'bg-element';
            bgContainer.appendChild(element);
        }
        
        document.body.appendChild(bgContainer);
    }

    generateWalletAddress() {
        const chars = '0123456789abcdef';
        let address = '0x';
        for (let i = 0; i < 40; i++) {
            address += chars[Math.floor(Math.random() * 16)];
        }
        return address;
    }

    toggleConnection() {
        if (this.isConnected) {
            this.disconnectWallet();
        } else {
            this.connectWallet();
        }
    }

    connectWallet() {
        // Simulate connection process
        this.connectBtn.disabled = true;
        this.connectText.textContent = 'Connecting...';
        
        setTimeout(() => {
            this.walletAddress = this.generateWalletAddress();
            this.isConnected = true;
            
            // Update UI
            this.connectText.textContent = 'Connected';
            this.connectBtn.classList.remove('bg-indigo-600', 'hover:bg-indigo-700');
            this.connectBtn.classList.add('bg-green-600', 'hover:bg-green-700');
            this.walletStatus.classList.remove('hidden');
            this.walletAddressEl.textContent = `${this.walletAddress.substring(0, 6)}...${this.walletAddress.substring(38)}`;
            this.connectionIndicator.classList.remove('bg-red-500');
            this.connectionIndicator.classList.add('bg-green-500', 'pulse');
            this.statusMessage.textContent = 'Wallet successfully connected to the blockchain.';
            this.networkName.textContent = this.network;
            this.balanceEl.textContent = `${this.balance.toFixed(4)} ETH`;
            this.disconnectBtn.classList.remove('hidden');
            this.simulateBtn.disabled = false;
            
            // Enable interaction buttons
            document.querySelectorAll('#send-btn, #execute-btn').forEach(btn => {
                btn.disabled = false;
            });
            
            this.connectBtn.disabled = false;
        }, 1500);
    }

    disconnectWallet() {
        this.isConnected = false;
        
        // Reset UI
        this.connectText.textContent = 'Connect Wallet';
        this.connectBtn.classList.remove('bg-green-600', 'hover:bg-green-700');
        this.connectBtn.classList.add('bg-indigo-600', 'hover:bg-indigo-700');
        this.walletStatus.classList.add('hidden');
        this.connectionIndicator.classList.remove('bg-green-500', 'pulse');
        this.connectionIndicator.classList.add('bg-red-500');
        this.statusMessage.textContent = 'Wallet disconnected. Please connect to interact with the blockchain.';
        this.networkName.textContent = 'Not Connected';
        this.balanceEl.textContent = '0.00 ETH';
        this.disconnectBtn.classList.add('hidden');
        this.simulateBtn.disabled = true;
        
        // Disable interaction buttons
        document.querySelectorAll('#send-btn, #execute-btn').forEach(btn => {
            btn.disabled = true;
        });
    }

    simulateTransaction() {
        if (!this.isConnected) return;
        
        const txTypes = [
            { type: 'Transfer', amount: (Math.random() * 5).toFixed(4), symbol: 'ETH' },
            { type: 'NFT Mint', amount: '1', symbol: 'NFT' },
            { type: 'Token Swap', amount: (Math.random() * 1000).toFixed(2), symbol: 'USDC' },
            { type: 'Staking', amount: (Math.random() * 10).toFixed(2), symbol: 'TOKEN' }
        ];
        
        const randomTx = txTypes[Math.floor(Math.random() * txTypes.length)];
        this.addTransaction(randomTx.type, randomTx.amount, randomTx.symbol);
    }

    sendTransaction() {
        if (!this.isConnected) return;
        
        const amount = document.getElementById('send-amount').value;
        const recipient = document.getElementById('recipient-address').value;
        
        if (!amount || !recipient) {
            alert('Please enter both amount and recipient address');
            return;
        }
        
        if (!recipient.startsWith('0x') || recipient.length !== 42) {
            alert('Invalid recipient address');
            return;
        }
        
        this.addTransaction('Transfer', amount, 'ETH', recipient);
        document.getElementById('send-amount').value = '';
        document.getElementById('recipient-address').value = '';
    }

    executeContractCall() {
        if (!this.isConnected) return;
        
        const action = this.contractAction.value;
        if (!action) {
            alert('Please select a contract action');
            return;
        }
        
        let txType, amount, symbol;
        switch(action) {
            case 'mint':
                txType = 'NFT Mint';
                amount = '1';
                symbol = 'NFT';
                break;
            case 'stake':
                txType = 'Token Stake';
                amount = (Math.random() * 100).toFixed(2);
                symbol = 'TOKEN';
                break;
            case 'claim':
                txType = 'Reward Claim';
                amount = (Math.random() * 50).toFixed(4);
                symbol = 'TOKEN';
                break;
            case 'swap':
                txType = 'Token Swap';
                amount = (Math.random() * 1000).toFixed(2);
                symbol = 'USDC';
                break;
        }
        
        this.addTransaction(txType, amount, symbol);
        this.contractAction.value = '';
        this.contractDetails.innerHTML = '<p class="text-gray-400 text-sm">Select an action to see details...</p>';
    }

    updateContractDetails(action) {
        let details = '';
        switch(action) {
            case 'mint':
                details = `
                    <p class="mb-2"><strong>Mint NFT Collection</strong></p>
                    <p class="text-sm text-gray-400">Gas Estimate: 250,000 Gwei</p>
                    <p class="text-sm text-gray-400">Fee: ~0.008 ETH</p>
                `;
                break;
            case 'stake':
                details = `
                    <p class="mb-2"><strong>Stake Tokens in Pool</strong></p>
                    <p class="text-sm text-gray-400">APR: 12.5%</p>
                    <p class="text-sm text-gray-400">Lock Period: 30 days</p>
                `;
                break;
            case 'claim':
                details = `
                    <p class="mb-2"><strong>Claim Staking Rewards</strong></p>
                    <p class="text-sm text-gray-400">Available: ${(Math.random() * 50).toFixed(4)} TOKEN</p>
                    <p class="text-sm text-gray-400">Gas Fee: ~0.003 ETH</p>
                `;
                break;
            case 'swap':
                details = `
                    <p class="mb-2"><strong>Swap Tokens</strong></p>
                    <p class="text-sm text-gray-400">Route: ETH → USDC</p>
                    <p class="text-sm text-gray-400">Slippage: 0.5%</p>
                `;
                break;
            default:
                details = '<p class="text-gray-400 text-sm">Select an action to see details...</p>';
        }
        this.contractDetails.innerHTML = details;
    }

    addTransaction(type, amount, symbol, recipient = null) {
        const tx = {
            id: Date.now(),
            type,
            amount,
            symbol,
            recipient,
            timestamp: new Date(),
            hash: '0x' + Array.from({length: 64}, () => Math.floor(Math.random() * 16).toString(16)).join(''),
            status: 'success'
        };
        
        this.transactions.unshift(tx);
        this.updateTransactionsList();
        this.updateBalance(type, amount, symbol);
        this.txCount.textContent = this.transactions.length;
    }

    updateTransactionsList() {
        if (this.transactions.length === 0) {
            this.transactionsContainer.innerHTML = `
                <div class="text-center py-12 text-gray-500">
                    <i data-feather="inbox" class="mx-auto h-12 w-12 mb-4"></i>
                    <p>No transactions yet</p>
                    <p class="text-sm mt-1">Connect wallet to view transaction history</p>
                </div>
            `;
            return;
        }
        
        let txHtml = '';
        this.transactions.slice(0, 5).forEach(tx => {
            const timeString = tx.timestamp.toLocaleTimeString([], {hour: '2-digit', minute:'2-digit'});
            const date = tx.timestamp.toLocaleDateString();
            
            txHtml += `
                <div class="transaction-item rounded-lg p-4 flex flex-col md:flex-row md:items-center justify-between">
                    <div class="tx-details mb-3 md:mb-0">
                        <div class="flex items-center mb-1">
                            <span class="font-medium">${tx.type}</span>
                            <span class="ml-2 status-badge bg-green-900 text-green-300">Success</span>
                        </div>
                        <p class="text-gray-400 text-sm">${date} at ${timeString}</p>
                        <p class="tx-hash text-gray-500 mt-1">${tx.hash.substring(0, 12)}...${tx.hash.substring(58)}</p>
                    </div>
                    <div class="tx-amount text-right">
                        <p class="font-medium">${tx.amount} ${tx.symbol}</p>
                        ${tx.recipient ? `<p class="text-gray-400 text-sm mt-1">To: ${tx.recipient.substring(0, 8)}...${tx.recipient.substring(36)}</p>` : ''}
                    </div>
                </div>
            `;
        });
        
        this.transactionsContainer.innerHTML = txHtml;
        feather.replace();
    }

    updateBalance(type, amount, symbol) {
        if (type === 'Transfer' && symbol === 'ETH') {
            this.balance -= parseFloat(amount);
            if (this.balance < 0) this.balance = 0;
            this.balanceEl.textContent = `${this.balance.toFixed(4)} ETH`;
        } else if (type === 'Reward Claim' || type === 'Token Swap') {
            // In a real scenario, we would update token balances
            // For simulation, we'll just show a notification
        }
    }

    clearTransactions() {
        this.transactions = [];
        this.updateTransactionsList();
        this.txCount.textContent = '0';
    }
}

// Initialize the simulator when the page loads
document.addEventListener('DOMContentLoaded', () => {
    window.web3Sim = new Web3Simulator();
    
    // Initialize Feather icons
    feather.replace();
});