/**
 * Banking Interface
 * Handles transfers, deposits, withdrawals, and account management
 */

// ============================================================================
// INITIALIZATION
// ============================================================================

function initBank() {
    setupEventHandlers();

    // Subscribe to store updates
    if (typeof store !== 'undefined') {
        store.subscribe(() => {
            updateBalances();
            renderTransactions();
        });
    }

    // Initial render
    updateBalances();
    renderTransactions();

    console.log('[Bank] Interface initialized');
}

// ============================================================================
// EVENT HANDLERS
// ============================================================================

function setupEventHandlers() {
    // Close button
    const closeBtn = document.querySelector('.close-btn');
    if (closeBtn) {
        closeBtn.addEventListener('click', () => {
            sendEvent('bank::close', {});
        });
    }

    // Transfer form
    const transferBtn = document.getElementById('transferBtn');
    const transferFrom = document.getElementById('transferFrom');
    const amount = document.getElementById('amount');
    const playerId = document.getElementById('playerId');
    const playerIdGroup = document.getElementById('playerIdGroup');

    // Always show player ID field since transfer is only to players
    if (playerIdGroup) {
        playerIdGroup.style.display = 'flex';
    }

    // Transfer button
    if (transferBtn) {
        transferBtn.addEventListener('click', () => {
            const from = transferFrom.value;
            const transferAmount = parseFloat(amount.value);

            if (!transferAmount || transferAmount <= 0) {
                console.log('Please enter a valid amount');
                return;
            }

            if (!playerId.value) {
                console.log('Please enter a player ID');
                return;
            }

            const currentState = store.getState();
            const fromAccountBalance = currentState.accounts[from];

            if (transferAmount > fromAccountBalance) {
                console.log('Insufficient funds');
                return;
            }

            const transferData = {
                from: from,
                amount: transferAmount,
                target: playerId.value
            };

            sendEvent('bank::transfer', transferData);

            // Dispatch to store to update UI
            store.dispatch(transfer(from, transferAmount, 'player'));

            // Clear form
            amount.value = '';
            playerId.value = '';
        });
    }

    // Quick action buttons
    const quickActionBtns = document.querySelectorAll('.quick-action-btn');
    quickActionBtns.forEach(btn => {
        btn.addEventListener('click', () => {
            const action = btn.dataset.action;
            const currentState = store.getState();

            switch (action) {
                case 'deposit-amount':
                    const depositAmountStr = document.getElementById('amount').value;
                    if (depositAmountStr && parseFloat(depositAmountStr) > 0) {
                        const depositAmount = parseFloat(depositAmountStr);
                        if (depositAmount > currentState.accounts.cash) {
                            console.log('Insufficient cash');
                            return;
                        }
                        sendEvent('bank::deposit', { amount: depositAmount });
                        store.dispatch(deposit(depositAmount));
                        document.getElementById('amount').value = '';
                    } else {
                        console.log('Please enter a valid amount');
                    }
                    break;
                case 'deposit':
                    const cashBalance = currentState.accounts.cash;
                    if (cashBalance <= 0) {
                        console.log('No cash to deposit');
                        return;
                    }
                    sendEvent('bank::deposit', { amount: cashBalance });
                    store.dispatch(deposit(cashBalance));
                    break;
                case 'withdraw':
                    const amountStr = document.getElementById('amount').value;
                    if (amountStr && parseFloat(amountStr) > 0) {
                        const withdrawAmount = parseFloat(amountStr);
                        sendEvent('bank::withdraw', { amount: withdrawAmount });
                        store.dispatch(withdraw(withdrawAmount));
                        document.getElementById('amount').value = '';
                    } else {
                        console.log('Please enter a valid amount');
                    }
                    break;
                default:
                    console.log('Invalid action');
                    break;
            }
        });
    });
}

// ============================================================================
// UI UPDATES
// ============================================================================

function updateBalances() {
    const currentState = store.getState();
    const balanceElements = document.querySelectorAll('.balance-amount');

    // The HTML structure has 3 account cards.
    // 0: Cash, 1: Bank, 2: Org
    if (balanceElements.length >= 3) {
        balanceElements[0].textContent = `$${currentState.accounts.cash.toLocaleString()}`;
        balanceElements[1].textContent = `$${currentState.accounts.bank.toLocaleString()}`;
        balanceElements[2].textContent = `$${currentState.accounts.org.toLocaleString()}`;
    }

    // Update form options
    const transferFrom = document.getElementById('transferFrom');

    if (transferFrom) {
        const currentSelection = transferFrom.value;
        transferFrom.innerHTML = `
            <option value="cash">Cash</option>
            <option value="bank" selected>Bank Account</option>
        `;
        if (currentSelection && (currentSelection === 'cash' || currentSelection === 'bank')) {
            transferFrom.value = currentSelection;
        }
    }

    // Update player list
    const playerSelect = document.getElementById('playerId');
    if (playerSelect && currentState.accounts.players) {
        const currentPlayerSelection = playerSelect.value;
        const players = currentState.accounts.players;
        const currentPlayerUid = currentState.uid;

        // Clear existing options
        playerSelect.innerHTML = '<option value="">Select Player...</option>';

        // Handle hashmap structure from Arma (UID -> {name, uid})
        if (players && typeof players === 'object') {
            // Convert hashmap to array and iterate
            Object.keys(players).forEach(uid => {
                // Skip current player to prevent self-transfers
                if (uid === currentPlayerUid) {
                    return;
                }

                const playerData = players[uid];
                if (playerData && playerData.name) {
                    const option = document.createElement('option');
                    option.value = uid;
                    option.textContent = playerData.name;
                    playerSelect.appendChild(option);
                }
            });
        }

        if (currentPlayerSelection) {
            // Verify if the selected player is still in the list
            const optionExists = Array.from(playerSelect.options).some(opt => opt.value === currentPlayerSelection);
            if (optionExists) {
                playerSelect.value = currentPlayerSelection;
            }
        }
    }
}

function renderTransactions() {
    const transactionList = document.querySelector('.transaction-list');
    if (!transactionList) return;

    transactionList.innerHTML = '';

    const currentState = store.getState();

    currentState.transactions.forEach((transaction, index) => {
        const item = document.createElement('div');
        item.className = 'transaction-item';

        // Deposits are gains (green), Withdrawals and Transfers are losses (red)
        const isGain = transaction.type === 'Deposit';
        const amountClass = isGain ? 'positive' : 'negative';
        const displayAmount = isGain ? `+$${transaction.amount.toLocaleString()}` : `-$${Math.abs(transaction.amount).toLocaleString()}`;

        // Map transaction types to CSS classes
        const typeClassMap = {
            'Deposit': 'deposit',
            'Withdraw': 'withdrawal',
            'Transfer': 'transfer'
        };
        const typeClass = typeClassMap[transaction.type] || transaction.type.toLowerCase();

        item.innerHTML = `
            <div class="transaction-header">
                <span class="transaction-type ${typeClass}">${transaction.type}</span>
                <span class="transaction-amount ${amountClass}">${displayAmount}</span>
            </div>
            <div class="transaction-details">
                <span class="transaction-time">${transaction.date}</span>
            </div>
        `;

        transactionList.appendChild(item);
    });
}

// ============================================================================
// ARMA 3 INTEGRATION
// ============================================================================

/**
 * Sends an event to Arma 3
 * @param {string} event - Event name
 * @param {Object} data - Event data
 */
function sendEvent(event, data) {
    if (typeof A3API !== 'undefined') {
        A3API.SendAlert(JSON.stringify({
            event: event,
            data: data
        }));
    } else {
        console.log('Event:', event, 'Data:', data);
    }
}

// ============================================================================
// AUTO-INITIALIZE
// ============================================================================

if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initBank);
} else {
    initBank();
}