// app/modules/loyalty/static/store/js/loyalty-analytics.js
// noqa: js-006 - async init pattern is safe, loadData has try/catch

const loyaltyAnalyticsLog = window.LogConfig.loggers.loyaltyAnalytics || window.LogConfig.createLogger('loyaltyAnalytics');

function storeLoyaltyAnalytics() {
    return {
        ...data(),
        currentPage: 'analytics',

        program: null,

        stats: {
            total_cards: 0,
            active_cards: 0,
            new_this_month: 0,
            total_points_issued: 0,
            total_points_redeemed: 0,
            total_points_balance: 0,
            points_issued_30d: 0,
            points_redeemed_30d: 0,
            transactions_30d: 0,
            avg_points_per_member: 0,
            estimated_liability_cents: 0,
        },

        // Advanced analytics
        cohortData: { cohorts: [] },
        churnData: { at_risk_count: 0, cards: [] },
        revenueData: { monthly: [], by_store: [] },
        revenueChart: null,

        loading: false,
        error: null,

        get redemptionRate() {
            if (this.stats.points_issued_30d === 0) return 0;
            return Math.round((this.stats.points_redeemed_30d / this.stats.points_issued_30d) * 100);
        },

        get issuedPercentage() {
            const total = this.stats.points_issued_30d + this.stats.points_redeemed_30d;
            if (total === 0) return 50;
            return Math.round((this.stats.points_issued_30d / total) * 100);
        },

        get redeemedPercentage() {
            return 100 - this.issuedPercentage;
        },

        async init() {
            loyaltyAnalyticsLog.info('=== LOYALTY ANALYTICS PAGE INITIALIZING ===');
            if (window._loyaltyAnalyticsInitialized) return;
            window._loyaltyAnalyticsInitialized = true;

            // Call parent init to set storeCode from URL
            const parentInit = data().init;
            if (parentInit) {
                await parentInit.call(this);
            }

            await this.loadProgram();
            if (this.program) {
                await this.loadStats();
                this.loadAdvancedAnalytics();
            }
            loyaltyAnalyticsLog.info('=== LOYALTY ANALYTICS PAGE INITIALIZATION COMPLETE ===');
        },

        async loadProgram() {
            try {
                const response = await apiClient.get('/store/loyalty/program');
                if (response) this.program = response;
            } catch (error) {
                if (error.status !== 404) throw error;
            }
        },

        async loadStats() {
            this.loading = true;
            this.error = null;

            try {
                const response = await apiClient.get('/store/loyalty/stats');
                if (response) {
                    this.stats = {
                        total_cards: response.total_cards || 0,
                        active_cards: response.active_cards || 0,
                        new_this_month: response.new_this_month || 0,
                        total_points_issued: response.total_points_issued || 0,
                        total_points_redeemed: response.total_points_redeemed || 0,
                        total_points_balance: response.total_points_balance || 0,
                        points_issued_30d: response.points_issued_30d || 0,
                        points_redeemed_30d: response.points_redeemed_30d || 0,
                        transactions_30d: response.transactions_30d || 0,
                        avg_points_per_member: response.avg_points_per_member || 0,
                        estimated_liability_cents: response.estimated_liability_cents || 0,
                    };
                    loyaltyAnalyticsLog.info('Stats loaded');
                }
            } catch (error) {
                loyaltyAnalyticsLog.error('Failed to load stats:', error);
                this.error = error.message;
            } finally {
                this.loading = false;
            }
        },

        async loadAdvancedAnalytics() {
            try {
                const [cohort, churn, revenue] = await Promise.all([
                    apiClient.get('/store/loyalty/analytics/cohorts'),
                    apiClient.get('/store/loyalty/analytics/churn'),
                    apiClient.get('/store/loyalty/analytics/revenue'),
                ]);
                if (cohort) this.cohortData = cohort;
                if (churn) this.churnData = churn;
                if (revenue) {
                    this.revenueData = revenue;
                    this.$nextTick(() => this.renderRevenueChart());
                }
                loyaltyAnalyticsLog.info('Advanced analytics loaded');
            } catch (error) {
                loyaltyAnalyticsLog.warn('Advanced analytics failed:', error.message);
            }
        },

        renderRevenueChart() {
            const canvas = document.getElementById('revenueChart');
            if (!canvas || !window.Chart || !this.revenueData.monthly.length) return;

            if (this.revenueChart) this.revenueChart.destroy();

            const labels = this.revenueData.monthly.map(m => m.month);
            const pointsData = this.revenueData.monthly.map(m => m.total_points_earned);
            const customersData = this.revenueData.monthly.map(m => m.unique_customers);

            this.revenueChart = new Chart(canvas, {
                type: 'bar',
                data: {
                    labels,
                    datasets: [
                        {
                            label: 'Points Earned',
                            data: pointsData,
                            backgroundColor: 'rgba(99, 102, 241, 0.7)',
                            borderRadius: 4,
                            yAxisID: 'y',
                        },
                        {
                            label: 'Active Customers',
                            data: customersData,
                            type: 'line',
                            borderColor: '#10b981',
                            backgroundColor: 'rgba(16, 185, 129, 0.1)',
                            fill: true,
                            tension: 0.3,
                            yAxisID: 'y1',
                        },
                    ],
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    interaction: { mode: 'index', intersect: false },
                    plugins: { legend: { position: 'bottom' } },
                    scales: {
                        y: { position: 'left', title: { display: true, text: 'Points' } },
                        y1: { position: 'right', title: { display: true, text: 'Customers' }, grid: { drawOnChartArea: false } },
                    },
                },
            });
        },

        formatNumber(num) {
            if (num === null || num === undefined) return '0';
            return new Intl.NumberFormat('en-US').format(num);
        }
    };
}

if (!window.LogConfig.loggers.loyaltyAnalytics) {
    window.LogConfig.loggers.loyaltyAnalytics = window.LogConfig.createLogger('loyaltyAnalytics');
}
loyaltyAnalyticsLog.info('Loyalty analytics module loaded');