// Wallet Component for Trust Economy
class Wallet {
    static init() {
        console.log('Wallet component initialized');
        this.setupWalletInterface();
        this.loadWalletData();
        this.setupRealTimeUpdates();
    }

    static setupWalletInterface() {
        // Setup wallet interaction handlers
        const walletButtons = document.querySelectorAll('[data-wallet-action]');
        walletButtons.forEach(button => {
            button.addEventListener('click', (e) => {
                const action = e.target.dataset.walletAction;
                this.handleWalletAction(action);
            });
        });
    }

    static handleWalletAction(action) {
        switch (action) {
            case 'view-transactions':
                this.showTransactionHistory();
                break;
            case 'withdraw':
                this.showWithdrawModal();
                break;
            case 'add-payment-method':
                this.showPaymentMethodModal();
                break;
            default:
                console.log('Unknown wallet action:', action);
        }
    }

    static async processReferralReward(qrId, conversionData) {
        try {
            // Calculate reward based on conversion value and recommender trust
            const baseReward = this.calculateBaseReward(conversionData.salePrice);
            const trustMultiplier = this.getTrustMultiplier(conversionData.recommenderTrust);
            const wageBonus = this.getWageTransparencyBonus(conversionData.merchantId);
            
            const totalReward = baseReward * trustMultiplier * wageBonus;
            
            const reward = {
                id: this.generateTransactionId(),
                type: 'referral_reward',
                amount: totalReward,
                currency: 'USD',
                status: 'pending_maturation',
                qrId,
                conversionId: conversionData.id,
                recipientId: conversionData.recommenderId,
                metadata: {
                    baseReward,
                    trustMultiplier,
                    wageBonus,
                    salePrice: conversionData.salePrice
                },
                createdAt: new Date().toISOString(),
                maturationDate: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000).toISOString() // 7 days
            };

            // Store pending reward
            this.storePendingReward(reward);
            
            return { success: true, reward };

        } catch (error) {
            console.error('Referral reward processing failed:', error);
            return { success: false, error: error.message };
        }
    }

    static calculateBaseReward(salePrice) {
        // Base reward calculation: 5-10% of sale price
        const rate = Math.max(0.05, Math.min(0.10, salePrice / 1000));
        return salePrice * rate;
    }

    static getTrustMultiplier(trustLevel) {
        // Trust level affects reward multiplier
        const multipliers = {
            'low': 0.8,
            'medium': 1.0,
            'high': 1.2,
            'verified': 1.5
        };
        return multipliers[trustLevel] || 1.0;
    }

    static getWageTransparencyBonus(merchantId) {
        // Bonus for supporting wage-transparent merchants
        // In real implementation, this would check merchant's wage transparency score
        const wageTransparent = this.isWageTransparent(merchantId);
        return wageTransparent ? 1.02 : 1.0; // 2% bonus
    }

    static isWageTransparent(merchantId) {
        // Check if merchant meets wage transparency requirements
        const transparentMerchants = JSON.parse(localStorage.getItem('wageTransparentMerchants') || '[]');
        return transparentMerchants.includes(merchantId);
    }

    static async processReviewBonus(reviewId, bonusAmount) {
        const review = this.getReviewById(reviewId);
        if (!review) {
            throw new Error('Review not found');
        }

        // Check if review meets bonus criteria
        if (!this.isReviewBonusEligible(review)) {
            throw new Error('Review not eligible for bonus');
        }

        const bonus = {
            id: this.generateTransactionId(),
            type: 'review_bonus',
            amount: bonusAmount,
            currency: 'USD',
            status: 'completed',
            reviewId,
            recipientId: review.userId,
            metadata: {
                reviewRating: review.rating,
                dimensions: review.dimensions,
                maturityDays: this.getDaysSinceReview(review.createdAt)
            },
            createdAt: new Date().toISOString()
        };

        this.addToWallet(review.userId, bonus.amount);
        this.storeTransaction(bonus);

        return { success: true, bonus };
    }

    static isReviewBonusEligible(review) {
        const maturityDays = this.getDaysSinceReview(review.createdAt);
        const hasMinimumRating = review.rating >= 4;
        const hasDetailedContent = review.content && review.content.length >= 100;
        const hasAllDimensions = Object.keys(review.dimensions || {}).length >= 3;
        
        return maturityDays >= 14 && hasMinimumRating && hasDetailedContent && hasAllDimensions;
    }

    static getDaysSinceReview(createdAt) {
        return Math.floor((new Date() - new Date(createdAt)) / (1000 * 60 * 60 * 24));
    }

    static async processDisputeRefund(disputeData) {
        // Handle refund processing due to disputes
        const refund = {
            id: this.generateTransactionId(),
            type: 'dispute_refund',
            amount: -Math.abs(disputeData.refundAmount),
            currency: 'USD',
            status: 'completed',
            originalTransactionId: disputeData.originalTxId,
            recipientId: disputeData.userId,
            metadata: {
                disputeReason: disputeData.reason,
                resolvedAt: new Date().toISOString(),
                merchantId: disputeData.merchantId
            },
            createdAt: new Date().toISOString()
        };

        // Subtract from merchant payout if applicable
        if (disputeData.merchantId) {
            await this.adjustMerchantPayout(disputeData.merchantId, refund.amount);
        }

        // Add back to user wallet
        this.addToWallet(disputeData.userId, Math.abs(refund.amount));
        this.storeTransaction(refund);

        // Trigger score recalculation due to refund
        this.triggerScoreRecalculation(disputeData.productId);

        return { success: true, refund };
    }

    static async adjustMerchantPayout(merchantId, adjustmentAmount) {
        // Adjust merchant payout for refunds/disputes
        const merchantPayouts = JSON.parse(localStorage.getItem(`merchantPayouts_${merchantId}`) || '[]');
        
        const adjustment = {
            id: this.generateTransactionId(),
            type: 'payout_adjustment',
            amount: adjustmentAmount,
            currency: 'USD',
            status: 'pending',
            merchantId,
            reason: 'dispute_refund',
            createdAt: new Date().toISOString()
        };

        merchantPayouts.push(adjustment);
        localStorage.setItem(`merchantPayouts_${merchantId}`, JSON.stringify(merchantPayouts));
    }

    static addToWallet(userId, amount) {
        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        
        if (!wallets[userId]) {
            wallets[userId] = {
                balance: 0,
                transactions: [],
                createdAt: new Date().toISOString()
            };
        }

        wallets[userId].balance += amount;
        wallets[userId].lastUpdated = new Date().toISOString();

        localStorage.setItem('wallets', JSON.stringify(wallets));
    }

    static getWalletBalance(userId) {
        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        return wallets[userId]?.balance || 0;
    }

    static storeTransaction(transaction) {
        const allTransactions = JSON.parse(localStorage.getItem('allTransactions') || '[]');
        allTransactions.push(transaction);
        localStorage.setItem('allTransactions', JSON.stringify(allTransactions));
    }

    static storePendingReward(reward) {
        const pendingRewards = JSON.parse(localStorage.getItem('pendingRewards') || '[]');
        pendingRewards.push(reward);
        localStorage.setItem('pendingRewards', JSON.stringify(pendingRewards));
    }

    static checkPendingMaturation() {
        const pendingRewards = JSON.parse(localStorage.getItem('pendingRewards') || '[]');
        const now = new Date();
        
        pendingRewards.forEach(reward => {
            if (new Date(reward.maturationDate) <= now && reward.status === 'pending_maturation') {
                this.matureReward(reward);
            }
        });
    }

    static matureReward(reward) {
        // Move pending reward to completed wallet transaction
        reward.status = 'completed';
        reward.maturedAt = new Date().toISOString();
        
        this.addToWallet(reward.recipientId, reward.amount);
        this.storeTransaction(reward);
        
        // Update pending rewards list
        const pendingRewards = JSON.parse(localStorage.getItem('pendingRewards') || '[]');
        const updatedRewards = pendingRewards.filter(r => r.id !== reward.id);
        localStorage.setItem('pendingRewards', JSON.stringify(updatedRewards));

        // Notify user
        if (window.OneSearchApp) {
            window.OneSearchApp.showNotification(
                `Referral reward of $${reward.amount.toFixed(2)} has matured`, 
                'success'
            );
        }
    }

    static loadWalletData() {
        const userId = window.OneSearchApp?.user?.id;
        if (!userId) return;

        // Initialize demo wallet data if not exists
        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        if (!wallets[userId]) {
            wallets[userId] = {
                balance: 47.23,
                transactions: [
                    {
                        id: 'tx_1',
                        type: 'referral_reward',
                        amount: 3.45,
                        currency: 'USD',
                        status: 'completed',
                        description: 'Kitchen organizer purchase',
                        createdAt: new Date(Date.now() - 2 * 24 * 60 * 60 * 1000).toISOString()
                    },
                    {
                        id: 'tx_2',
                        type: 'review_bonus',
                        amount: 1.20,
                        currency: 'USD',
                        status: 'completed',
                        description: 'Verified product review',
                        createdAt: new Date(Date.now() - 5 * 24 * 60 * 60 * 1000).toISOString()
                    }
                ],
                createdAt: new Date().toISOString()
            };
            localStorage.setItem('wallets', JSON.stringify(wallets));
        }

        this.updateWalletDisplay(userId);
    }

    static updateWalletDisplay(userId) {
        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        const wallet = wallets[userId];
        
        if (!wallet) return;

        // Update balance display
        const balanceElements = document.querySelectorAll('.wallet-balance');
        balanceElements.forEach(el => {
            el.textContent = `$${wallet.balance.toFixed(2)}`;
        });

        // Update transaction history
        this.updateTransactionDisplay(wallet.transactions);
    }

    static updateTransactionDisplay(transactions) {
        const container = document.querySelector('#wallet .space-y-3');
        if (!container) return;

        // Clear existing transactions
        container.innerHTML = '';

        // Add current transactions
        transactions.forEach(tx => {
            const txElement = this.createTransactionElement(tx);
            container.appendChild(txElement);
        });
    }

    static createTransactionElement(transaction) {
        const element = document.createElement('div');
        element.className = 'flex justify-between items-center p-3 border rounded-lg';
        
        const typeColors = {
            'referral_reward': 'text-green-600',
            'review_bonus': 'text-green-600',
            'dispute_refund': 'text-blue-600',
            'withdrawal': 'text-red-600'
        };

        const iconMap = {
            'referral_reward': 'share-2',
            'review_bonus': 'star',
            'dispute_refund': 'rotate-ccw',
            'withdrawal': 'arrow-up'
        };

        const timeAgo = this.getTimeAgo(transaction.createdAt);
        const amountColor = transaction.amount >= 0 ? 'text-green-600' : 'text-red-600';
        
        element.innerHTML = `
            <div>
                <div class="text-sm font-medium">${this.getTransactionDescription(transaction)}</div>
                <div class="text-xs text-gray-600">${timeAgo}</div>
            </div>
            <div class="text-right">
                <div class="font-medium ${amountColor}">${transaction.amount >= 0 ? '+' : ''}$${Math.abs(transaction.amount).toFixed(2)}</div>
                <div class="text-xs text-gray-500">${transaction.status}</div>
            </div>
        `;

        return element;
    }

    static getTransactionDescription(transaction) {
        const descriptions = {
            'referral_reward': 'Referral Reward',
            'review_bonus': 'Review Bonus',
            'dispute_refund': 'Refund',
            'withdrawal': 'Withdrawal'
        };
        return descriptions[transaction.type] || transaction.type;
    }

    static getTimeAgo(timestamp) {
        const now = new Date();
        const time = new Date(timestamp);
        const diffInMs = now - time;
        const diffInDays = Math.floor(diffInMs / (1000 * 60 * 60 * 24));
        const diffInHours = Math.floor(diffInMs / (1000 * 60 * 60));
        
        if (diffInDays > 0) {
            return `${diffInDays} day${diffInDays > 1 ? 's' : ''} ago`;
        } else if (diffInHours > 0) {
            return `${diffInHours} hour${diffInHours > 1 ? 's' : ''} ago`;
        } else {
            return 'Just now';
        }
    }

    static setupRealTimeUpdates() {
        // Check for matured rewards every minute
        setInterval(() => {
            this.checkPendingMaturation();
        }, 60000);

        // Update display every 30 seconds
        setInterval(() => {
            const userId = window.OneSearchApp?.user?.id;
            if (userId) {
                this.updateWalletDisplay(userId);
            }
        }, 30000);
    }

    static showTransactionHistory() {
        // Show detailed transaction history modal
        const userId = window.OneSearchApp?.user?.id;
        if (!userId) return;

        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        const transactions = wallets[userId]?.transactions || [];

        const modal = this.createTransactionHistoryModal(transactions);
        document.body.appendChild(modal);
    }

    static createTransactionHistoryModal(transactions) {
        const modal = document.createElement('div');
        modal.className = 'fixed inset-0 bg-gray-600 bg-opacity-50 flex items-center justify-center z-50';
        
        modal.innerHTML = `
            <div class="bg-white rounded-lg shadow-xl max-w-2xl w-full mx-4 max-h-96 overflow-y-auto">
                <div class="px-6 py-4 border-b">
                    <div class="flex justify-between items-center">
                        <h3 class="text-lg font-semibold">Transaction History</h3>
                        <button class="text-gray-400 hover:text-gray-600" onclick="this.closest('.fixed').remove()">
                            <i data-feather="x" class="h-6 w-6"></i>
                        </button>
                    </div>
                </div>
                <div class="p-6">
                    <div class="space-y-4">
                        ${transactions.map(tx => this.createDetailedTransactionElement(tx)).join('')}
                    </div>
                </div>
            </div>
        `;

        setTimeout(() => {
            if (window.feather) {
                window.feather.replace();
            }
        }, 0);

        return modal;
    }

    static createDetailedTransactionElement(transaction) {
        return `
            <div class="border rounded-lg p-4">
                <div class="flex justify-between items-start mb-2">
                    <div>
                        <div class="font-medium">${this.getTransactionDescription(transaction)}</div>
                        <div class="text-sm text-gray-600">${new Date(transaction.createdAt).toLocaleString()}</div>
                    </div>
                    <div class="text-right">
                        <div class="font-bold ${transaction.amount >= 0 ? 'text-green-600' : 'text-red-600'}">
                            ${transaction.amount >= 0 ? '+' : ''}$${Math.abs(transaction.amount).toFixed(2)}
                        </div>
                        <div class="text-xs text-gray-500">${transaction.status}</div>
                    </div>
                </div>
                ${transaction.description ? `<div class="text-sm text-gray-700">${transaction.description}</div>` : ''}
            </div>
        `;
    }

    static showWithdrawModal() {
        // Show withdrawal modal
        const userId = window.OneSearchApp?.user?.id;
        const balance = this.getWalletBalance(userId);
        
        if (balance < 10) {
            if (window.OneSearchApp) {
                window.OneSearchApp.showNotification('Minimum withdrawal amount is $10.00', 'warning');
            }
            return;
        }

        const modal = this.createWithdrawModal(balance);
        document.body.appendChild(modal);
    }

    static createWithdrawModal(balance) {
        const modal = document.createElement('div');
        modal.className = 'fixed inset-0 bg-gray-600 bg-opacity-50 flex items-center justify-center z-50';
        
        modal.innerHTML = `
            <div class="bg-white rounded-lg shadow-xl max-w-md w-full mx-4">
                <div class="px-6 py-4 border-b">
                    <div class="flex justify-between items-center">
                        <h3 class="text-lg font-semibold">Withdraw Funds</h3>
                        <button class="text-gray-400 hover:text-gray-600" onclick="this.closest('.fixed').remove()">
                            <i data-feather="x" class="h-6 w-6"></i>
                        </button>
                    </div>
                </div>
                <div class="p-6">
                    <div class="space-y-4">
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-2">Available Balance</label>
                            <div class="text-2xl font-bold">$${balance.toFixed(2)}</div>
                        </div>
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-2">Withdrawal Amount</label>
                            <input type="number" class="w-full border border-gray-300 rounded-md px-3 py-2" 
                                   min="10" max="${balance}" step="0.01" placeholder="Enter amount">
                        </div>
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-2">Withdrawal Method</label>
                            <select class="w-full border border-gray-300 rounded-md px-3 py-2">
                                <option>Bank Transfer</option>
                                <option>PayPal</option>
                                <option>Check</option>
                            </select>
                        </div>
                    </div>
                </div>
                <div class="px-6 py-4 border-t bg-gray-50">
                    <div class="flex space-x-3">
                        <button class="flex-1 px-4 py-2 text-sm font-medium text-gray-700 bg-white border border-gray-300 rounded-md hover:bg-gray-50">
                            Cancel
                        </button>
                        <button class="flex-1 px-4 py-2 text-sm font-medium text-white bg-blue-500 border border-transparent rounded-md hover:bg-blue-600">
                            Withdraw
                        </button>
                    </div>
                </div>
            </div>
        `;

        return modal;
    }

    static generateTransactionId() {
        return 'tx_' + Date.now().toString(36) + Math.random().toString(36).substring(2, 8);
    }

    static getReviewById(reviewId) {
        const reviews = JSON.parse(localStorage.getItem('reviews') || '[]');
        return reviews.find(review => review.id === reviewId);
    }

    static triggerScoreRecalculation(productId) {
        // Trigger trust score recalculation due to refund/dispute
        const event = new CustomEvent('scoreRecalculationRequested', {
            detail: { productId, reason: 'dispute_refund' }
        });
        document.dispatchEvent(event);
    }

    static exportWalletData(userId) {
        // Export wallet data for user records
        const wallets = JSON.parse(localStorage.getItem('wallets') || '{}');
        const wallet = wallets[userId];
        
        return {
            userId,
            balance: wallet?.balance || 0,
            transactions: wallet?.transactions || [],
            exportDate: new Date().toISOString(),
            walletVersion: '1.0'
        };
    }
}

// Export for use in main app
if (typeof window !== 'undefined') {
    window.Wallet = Wallet;
}

if (typeof module !== 'undefined' && module.exports) {
    module.exports = Wallet;
}