// static/admin/js/billing-history.js
// noqa: JS-003 - Uses ...baseData which is data() with safety check

const billingLog = window.LogConfig?.loggers?.billingHistory || console;

function adminBillingHistory() {
    // Get base data with safety check for standalone usage
    const baseData = typeof data === 'function' ? data() : {};

    return {
        // Inherit base layout functionality from init-alpine.js
        ...baseData,

        // Page-specific state
        currentPage: 'billing-history',
        loading: true,
        error: null,
        successMessage: null,

        // Data
        invoices: [],
        vendors: [],
        statusCounts: {
            paid: 0,
            open: 0,
            draft: 0,
            uncollectible: 0,
            void: 0
        },

        // Filters
        filters: {
            vendor_id: '',
            status: ''
        },

        // Pagination
        pagination: {
            page: 1,
            per_page: 20,
            total: 0,
            pages: 0
        },

        // Sorting
        sortBy: 'invoice_date',
        sortOrder: 'desc',

        // Computed: Total pages
        get totalPages() {
            return this.pagination.pages;
        },

        // Computed: Start index for pagination display
        get startIndex() {
            if (this.pagination.total === 0) return 0;
            return (this.pagination.page - 1) * this.pagination.per_page + 1;
        },

        // Computed: End index for pagination display
        get endIndex() {
            const end = this.pagination.page * this.pagination.per_page;
            return end > this.pagination.total ? this.pagination.total : end;
        },

        // Computed: Page numbers for pagination
        get pageNumbers() {
            const pages = [];
            const totalPages = this.totalPages;
            const current = this.pagination.page;

            if (totalPages <= 7) {
                for (let i = 1; i <= totalPages; i++) {
                    pages.push(i);
                }
            } else {
                pages.push(1);
                if (current > 3) {
                    pages.push('...');
                }
                const start = Math.max(2, current - 1);
                const end = Math.min(totalPages - 1, current + 1);
                for (let i = start; i <= end; i++) {
                    pages.push(i);
                }
                if (current < totalPages - 2) {
                    pages.push('...');
                }
                pages.push(totalPages);
            }
            return pages;
        },

        async init() {
            // Guard against multiple initialization
            if (window._adminBillingHistoryInitialized) {
                billingLog.warn('Already initialized, skipping');
                return;
            }
            window._adminBillingHistoryInitialized = true;

            billingLog.info('=== BILLING HISTORY PAGE INITIALIZING ===');

            // Load platform settings for rows per page
            if (window.PlatformSettings) {
                this.pagination.per_page = await window.PlatformSettings.getRowsPerPage();
            }

            await this.loadVendors();
            await this.loadInvoices();
        },

        async refresh() {
            this.error = null;
            this.successMessage = null;
            await this.loadInvoices();
        },

        async loadVendors() {
            try {
                const data = await apiClient.get('/admin/vendors?limit=1000');
                this.vendors = data.vendors || [];
                billingLog.info(`Loaded ${this.vendors.length} vendors for filter`);
            } catch (error) {
                billingLog.error('Failed to load vendors:', error);
            }
        },

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

            try {
                const params = new URLSearchParams();
                params.append('page', this.pagination.page);
                params.append('per_page', this.pagination.per_page);
                if (this.filters.vendor_id) params.append('vendor_id', this.filters.vendor_id);
                if (this.filters.status) params.append('status', this.filters.status);
                if (this.sortBy) params.append('sort_by', this.sortBy);
                if (this.sortOrder) params.append('sort_order', this.sortOrder);

                const data = await apiClient.get(`/admin/subscriptions/billing/history?${params}`);
                this.invoices = data.invoices || [];
                this.pagination.total = data.total;
                this.pagination.pages = data.pages;

                // Count by status (from loaded data for approximation)
                this.updateStatusCounts();

                billingLog.info(`Loaded ${this.invoices.length} invoices (total: ${this.pagination.total})`);
            } catch (error) {
                billingLog.error('Failed to load invoices:', error);
                this.error = error.message || 'Failed to load billing history';
            } finally {
                this.loading = false;
            }
        },

        handleSort(key) {
            if (this.sortBy === key) {
                this.sortOrder = this.sortOrder === 'asc' ? 'desc' : 'asc';
            } else {
                this.sortBy = key;
                this.sortOrder = 'asc';
            }
            this.pagination.page = 1;
            this.loadInvoices();
        },

        updateStatusCounts() {
            // Reset counts
            this.statusCounts = {
                paid: 0,
                open: 0,
                draft: 0,
                uncollectible: 0,
                void: 0
            };

            // Count from current page (approximation)
            for (const invoice of this.invoices) {
                if (this.statusCounts[invoice.status] !== undefined) {
                    this.statusCounts[invoice.status]++;
                }
            }
        },

        resetFilters() {
            this.filters = {
                vendor_id: '',
                status: ''
            };
            this.pagination.page = 1;
            this.loadInvoices();
        },

        previousPage() {
            if (this.pagination.page > 1) {
                this.pagination.page--;
                this.loadInvoices();
            }
        },

        nextPage() {
            if (this.pagination.page < this.totalPages) {
                this.pagination.page++;
                this.loadInvoices();
            }
        },

        goToPage(pageNum) {
            if (pageNum !== '...' && pageNum >= 1 && pageNum <= this.totalPages) {
                this.pagination.page = pageNum;
                this.loadInvoices();
            }
        },

        formatDate(dateStr) {
            if (!dateStr) return '-';
            return new Date(dateStr).toLocaleDateString('de-LU', {
                year: 'numeric',
                month: 'short',
                day: 'numeric'
            });
        },

        formatCurrency(cents) {
            if (cents === null || cents === undefined) return '-';
            return new Intl.NumberFormat('de-LU', {
                style: 'currency',
                currency: 'EUR'
            }).format(cents / 100);
        }
    };
}

billingLog.info('Billing history module loaded');