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

// Create custom logger for admin users
const adminUsersLog = window.LogConfig.createLogger('ADMIN-USERS');

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

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

        // State
        adminUsers: [],
        loading: false,
        error: null,
        currentUserId: null,
        filters: {
            search: '',
            is_super_admin: '',
            is_active: ''
        },
        stats: {
            total_admins: 0,
            super_admins: 0,
            platform_admins: 0,
            active_admins: 0
        },
        pagination: {
            page: 1,
            per_page: 20,
            total: 0,
            pages: 0
        },

        // Initialization
        async init() {
            adminUsersLog.info('=== ADMIN USERS PAGE INITIALIZING ===');

            // Prevent multiple initializations
            if (window._adminUsersInitialized) {
                adminUsersLog.warn('Admin users page already initialized, skipping...');
                return;
            }
            window._adminUsersInitialized = true;

            // Get current user ID
            this.currentUserId = this.adminProfile?.id || null;

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

            await this.loadAdminUsers();
            await this.loadStats();

            adminUsersLog.info('=== ADMIN 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) {
                // Show all pages if 7 or fewer
                for (let i = 1; i <= totalPages; i++) {
                    pages.push(i);
                }
            } else {
                // Always show first page
                pages.push(1);

                if (current > 3) {
                    pages.push('...');
                }

                // Show pages around current page
                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('...');
                }

                // Always show last page
                pages.push(totalPages);
            }

            return pages;
        },

        // Load admin users from API
        async loadAdminUsers() {
            adminUsersLog.info('Loading admin users...');
            this.loading = true;
            this.error = null;

            try {
                const params = new URLSearchParams();
                // Calculate skip for pagination
                const skip = (this.pagination.page - 1) * this.pagination.per_page;
                params.append('skip', skip);
                params.append('limit', this.pagination.per_page);

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

                const url = `/admin/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 Admin Users', duration);

                // Transform API response to expected format
                let admins = response.admins || [];

                // Apply client-side filtering for search and super admin status
                if (this.filters.search) {
                    const searchLower = this.filters.search.toLowerCase();
                    admins = admins.filter(admin =>
                        admin.username?.toLowerCase().includes(searchLower) ||
                        admin.email?.toLowerCase().includes(searchLower) ||
                        admin.first_name?.toLowerCase().includes(searchLower) ||
                        admin.last_name?.toLowerCase().includes(searchLower)
                    );
                }

                // Filter by super admin status
                if (this.filters.is_super_admin === 'true') {
                    admins = admins.filter(admin => admin.is_super_admin);
                }

                // Filter by active status
                if (this.filters.is_active !== '') {
                    const isActive = this.filters.is_active === 'true';
                    admins = admins.filter(admin => admin.is_active === isActive);
                }

                // Transform platform_assignments to platforms for template
                this.adminUsers = admins.map(admin => ({
                    ...admin,
                    platforms: (admin.platform_assignments || []).map(pa => ({
                        id: pa.platform_id,
                        code: pa.platform_code,
                        name: pa.platform_name
                    })),
                    full_name: [admin.first_name, admin.last_name].filter(Boolean).join(' ') || null
                }));

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

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

        // Load statistics (computed from admin users data)
        async loadStats() {
            adminUsersLog.info('Loading admin user statistics...');

            try {
                // Fetch all admin users to compute stats (max 500 per API limit)
                const url = '/admin/admin-users?skip=0&limit=500';
                window.LogConfig.logApiCall('GET', url, null, 'request');

                const response = await apiClient.get(url);

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

                const admins = response.admins || [];

                // Compute stats from the data
                this.stats = {
                    total_admins: admins.length,
                    super_admins: admins.filter(a => a.is_super_admin).length,
                    platform_admins: admins.filter(a => !a.is_super_admin).length,
                    active_admins: admins.filter(a => a.is_active).length
                };

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

        // Search with debounce
        debouncedSearch() {
            // Clear existing timeout
            if (this._searchTimeout) {
                clearTimeout(this._searchTimeout);
            }
            // Set new timeout
            this._searchTimeout = setTimeout(() => {
                adminUsersLog.info('Search triggered:', this.filters.search);
                this.pagination.page = 1;
                this.loadAdminUsers();
            }, 300);
        },

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

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

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

        // Actions
        viewAdminUser(admin) {
            adminUsersLog.info('View admin user:', admin.username);
            window.location.href = `/admin/admin-users/${admin.id}`;
        },

        editAdminUser(admin) {
            adminUsersLog.info('Edit admin user:', admin.username);
            window.location.href = `/admin/admin-users/${admin.id}/edit`;
        },

        async deleteAdminUser(admin) {
            adminUsersLog.warn('Delete admin user requested:', admin.username);

            // Prevent self-deletion
            if (admin.id === this.currentUserId) {
                Utils.showToast('You cannot delete your own account', 'error');
                return;
            }

            if (!confirm(`Are you sure you want to delete admin user "${admin.username}"?\n\nThis action cannot be undone.`)) {
                adminUsersLog.info('Delete cancelled by user');
                return;
            }

            // Second confirmation for safety
            if (!confirm(`FINAL CONFIRMATION\n\nAre you absolutely sure you want to delete "${admin.username}"?`)) {
                adminUsersLog.info('Delete cancelled by user (second confirmation)');
                return;
            }

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

                await apiClient.delete(url);

                Utils.showToast('Admin user deleted successfully', 'success');
                adminUsersLog.info('Admin user deleted successfully');

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

        openCreateModal() {
            adminUsersLog.info('Open create admin user page');
            window.location.href = '/admin/admin-users/create';
        }
    };
}

adminUsersLog.info('Admin users module loaded');