// noqa: js-006 - async init pattern is safe, loadData has try/catch
// static/admin/js/merchant-users.js

// Create custom logger for merchant users
const merchantUsersLog = window.LogConfig.createLogger('MERCHANT-USERS');

function merchantUsersPage() {
    return {
        // Inherit base layout functionality
        ...data(),

        // Set page identifier
        currentPage: 'merchant-users',

        // State
        merchantUsers: [],
        loading: false,
        error: null,
        showDeleteModal: false,
        showDeleteFinalModal: false,
        userToDelete: null,
        filters: {
            search: '',
            is_active: ''
        },
        stats: {
            merchant_users_total: 0,
            merchant_owners: 0,
            merchant_team_members: 0,
            merchant_users_active: 0
        },
        pagination: {
            page: 1,
            per_page: 20,
            total: 0,
            pages: 0
        },

        // Initialization
        async init() {
            // Load i18n translations
            await I18n.loadModule('tenancy');

            merchantUsersLog.info('=== MERCHANT USERS PAGE INITIALIZING ===');

            // Prevent multiple initializations
            if (window._merchantUsersInitialized) {
                merchantUsersLog.warn('Merchant users page already initialized, skipping...');
                return;
            }
            window._merchantUsersInitialized = true;

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

            await this.loadMerchantUsers();
            await this.loadStats();

            merchantUsersLog.info('=== MERCHANT USERS PAGE INITIALIZATION COMPLETE ===');
        },

        // Format date helper
        formatDate(dateString) {
            if (!dateString) return '-';
            return Utils.formatDate(dateString);
        },

        // Computed: Total number of 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: Generate page numbers array with ellipsis
        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;
        },

        // Load merchant users from API
        async loadMerchantUsers() {
            merchantUsersLog.info('Loading merchant users...');
            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);
                params.append('scope', 'merchant');

                if (this.filters.search) {
                    params.append('search', this.filters.search);
                }
                if (this.filters.is_active !== '') {
                    params.append('is_active', this.filters.is_active);
                }

                const url = `/admin/users?${params}`;
                window.LogConfig.logApiCall('GET', url, null, 'request');

                const startTime = performance.now();
                const response = await apiClient.get(url);
                const duration = performance.now() - startTime;

                window.LogConfig.logApiCall('GET', url, response, 'response');
                window.LogConfig.logPerformance('Load Merchant Users', duration);

                this.merchantUsers = (response.items || []).map(user => ({
                    ...user,
                    full_name: [user.first_name, user.last_name].filter(Boolean).join(' ') || null
                }));

                this.pagination.total = response.total || 0;
                this.pagination.pages = response.pages || Math.ceil(this.pagination.total / this.pagination.per_page) || 1;

                merchantUsersLog.info(`Loaded ${this.merchantUsers.length} merchant users`);
            } catch (error) {
                window.LogConfig.logError(error, 'Load Merchant Users');
                this.error = error.message || 'Failed to load merchant users';
                Utils.showToast('Failed to load merchant users', 'error');
            } finally {
                this.loading = false;
            }
        },

        // Load statistics from metrics provider
        async loadStats() {
            merchantUsersLog.info('Loading merchant user statistics...');

            try {
                const url = '/admin/users/merchant-stats';
                window.LogConfig.logApiCall('GET', url, null, 'request');

                const response = await apiClient.get(url);

                window.LogConfig.logApiCall('GET', url, response, 'response');

                this.stats = {
                    merchant_users_total: response.merchant_users_total || 0,
                    merchant_owners: response.merchant_owners || 0,
                    merchant_team_members: response.merchant_team_members || 0,
                    merchant_users_active: response.merchant_users_active || 0
                };

                merchantUsersLog.debug('Stats loaded:', this.stats);
            } catch (error) {
                window.LogConfig.logError(error, 'Load Merchant Stats');
                // Stats are non-critical, don't show error toast
            }
        },

        // Search with debounce
        debouncedSearch() {
            if (this._searchTimeout) {
                clearTimeout(this._searchTimeout);
            }
            this._searchTimeout = setTimeout(() => {
                merchantUsersLog.info('Search triggered:', this.filters.search);
                this.pagination.page = 1;
                this.loadMerchantUsers();
            }, 300);
        },

        // Pagination
        nextPage() {
            if (this.pagination.page < this.pagination.pages) {
                this.pagination.page++;
                merchantUsersLog.info('Next page:', this.pagination.page);
                this.loadMerchantUsers();
            }
        },

        previousPage() {
            if (this.pagination.page > 1) {
                this.pagination.page--;
                merchantUsersLog.info('Previous page:', this.pagination.page);
                this.loadMerchantUsers();
            }
        },

        goToPage(pageNum) {
            if (pageNum !== '...' && pageNum >= 1 && pageNum <= this.totalPages) {
                this.pagination.page = pageNum;
                merchantUsersLog.info('Go to page:', this.pagination.page);
                this.loadMerchantUsers();
            }
        },

        // Intermediate step for double-confirm delete
        confirmDeleteStep() {
            merchantUsersLog.info('First delete confirmation accepted, showing final confirmation');
            this.showDeleteFinalModal = true;
        },

        // Delete user
        async deleteUser(user) {
            merchantUsersLog.warn('Delete user requested:', user.username);

            try {
                const url = `/admin/users/${user.id}`;
                window.LogConfig.logApiCall('DELETE', url, null, 'request');

                await apiClient.delete(url);

                window.LogConfig.logApiCall('DELETE', url, null, 'response');

                Utils.showToast('User deleted successfully', 'success');
                merchantUsersLog.info('User deleted successfully');

                await this.loadMerchantUsers();
                await this.loadStats();
            } catch (error) {
                window.LogConfig.logError(error, 'Delete User');
                Utils.showToast(error.message || 'Failed to delete user', 'error');
            }
        }
    };
}

merchantUsersLog.info('Merchant users module loaded');