// app/modules/loyalty/static/shared/js/loyalty-card-detail-view.js
// Shared Alpine.js data factory for loyalty card detail pages.
// Used by store, merchant, and admin frontends.

const loyaltyCardDetailViewLog = window.LogConfig.loggers.loyaltyCardDetailView || window.LogConfig.createLogger('loyaltyCardDetailView');

/**
 * Factory that returns an Alpine.js data object for a single loyalty card detail view.
 *
 * @param {Object} config
 * @param {string} config.apiPrefix   - API path prefix, e.g. '/store/loyalty'
 * @param {string} config.backUrl     - URL for the "back to list" navigation
 * @param {string} config.currentPage - Alpine currentPage identifier
 */
function loyaltyCardDetailView(config) {
    const guardKey = '_loyaltyCardDetailView_' + config.currentPage + '_initialized';

    return {
        ...data(),
        currentPage: config.currentPage,

        // Data
        cardId: null,
        card: null,
        transactions: [],

        // State
        loading: false,
        error: null,

        // Config (exposed for templates)
        _config: config,

        async init() {
            loyaltyCardDetailViewLog.info('=== LOYALTY CARD DETAIL VIEW INITIALIZING ===', config.currentPage);
            if (window[guardKey]) return;
            window[guardKey] = true;

            const parentInit = data().init;
            if (parentInit) {
                await parentInit.call(this);
            }

            // Extract cardId from URL: find 'cards' segment and take the next segment
            this.cardId = this._extractCardIdFromUrl();
            if (!this.cardId) {
                this.error = I18n.t('loyalty.errors.card_not_found');
                loyaltyCardDetailViewLog.error('Could not extract card ID from URL');
                return;
            }

            loyaltyCardDetailViewLog.info('Card ID extracted:', this.cardId);
            await this.loadData();
            loyaltyCardDetailViewLog.info('=== LOYALTY CARD DETAIL VIEW INITIALIZATION COMPLETE ===');
        },

        /**
         * Extract the card ID from the current URL path.
         * Looks for the 'cards' segment and returns the segment immediately after it.
         * e.g. /store/ORION/loyalty/cards/abc123 -> 'abc123'
         */
        _extractCardIdFromUrl() {
            try {
                const segments = window.location.pathname.split('/').filter(Boolean);
                const cardsIndex = segments.indexOf('cards');
                if (cardsIndex !== -1 && cardsIndex + 1 < segments.length) {
                    return segments[cardsIndex + 1];
                }
            } catch (error) {
                loyaltyCardDetailViewLog.error('Error parsing URL for card ID:', error);
            }
            return null;
        },

        async loadData() {
            this.loading = true;
            this.error = null;
            try {
                await Promise.all([
                    this.loadCard(),
                    this.loadTransactions()
                ]);
            } catch (error) {
                loyaltyCardDetailViewLog.error('Failed to load card data:', error);
                this.error = error.message;
            } finally {
                this.loading = false;
            }
        },

        async loadCard() {
            try {
                const response = await apiClient.get(config.apiPrefix + '/cards/' + this.cardId);
                if (response) {
                    this.card = response;
                }
            } catch (error) {
                loyaltyCardDetailViewLog.error('Failed to load card:', error);
                throw error;
            }
        },

        async loadTransactions() {
            try {
                const response = await apiClient.get(
                    config.apiPrefix + '/cards/' + this.cardId + '/transactions?limit=50'
                );
                if (response) {
                    this.transactions = Array.isArray(response)
                        ? response
                        : (response.transactions || []);
                }
            } catch (error) {
                loyaltyCardDetailViewLog.warn('Failed to load transactions:', error.message);
            }
        },

        // Formatting helpers
        formatNumber(num) {
            return num == null ? '0' : new Intl.NumberFormat('en-US').format(num);
        },

        formatDate(dateString) {
            if (!dateString) return 'Never';
            try {
                return new Date(dateString).toLocaleDateString('en-US', {
                    year: 'numeric',
                    month: 'short',
                    day: 'numeric'
                });
            } catch (e) {
                return dateString;
            }
        },

        formatDateTime(dateString) {
            if (!dateString) return 'Never';
            try {
                return new Date(dateString).toLocaleDateString('en-US', {
                    year: 'numeric',
                    month: 'short',
                    day: 'numeric',
                    hour: '2-digit',
                    minute: '2-digit'
                });
            } catch (e) {
                return dateString;
            }
        }
    };
}

if (!window.LogConfig.loggers.loyaltyCardDetailView) {
    window.LogConfig.loggers.loyaltyCardDetailView = window.LogConfig.createLogger('loyaltyCardDetailView');
}
loyaltyCardDetailViewLog.info('Loyalty card detail view shared module loaded');