// noqa: js-006 - async init pattern is safe, loadData has try/catch
/**
 * Code Quality Violations List Component
 * Manages the violations list page with filtering and pagination
 */

// ✅ Use centralized logger
const codeQualityViolationsLog = window.LogConfig.createLogger('CODE-QUALITY');

function codeQualityViolations() {
    return {
        // Extend base data
        ...data(),

        // Set current page for navigation
        currentPage: 'code-quality',

        // Violations-specific data
        loading: false,
        error: null,
        violations: [],
        pagination: {
            page: 1,
            per_page: 20,
            total: 0,
            pages: 0
        },
        filters: {
            validator_type: '',
            severity: '',
            status: '',
            rule_id: '',
            file_path: ''
        },

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

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

            // Load filters from URL params
            const params = new URLSearchParams(window.location.search);
            this.filters.validator_type = params.get('validator_type') || '';
            this.filters.severity = params.get('severity') || '';
            this.filters.status = params.get('status') || '';
            this.filters.rule_id = params.get('rule_id') || '';
            this.filters.file_path = params.get('file_path') || '';

            await this.loadViolations();
        },

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

            try {
                // Build query params
                const params = {
                    page: this.pagination.page.toString(),
                    page_size: this.pagination.per_page.toString()
                };

                if (this.filters.validator_type) params.validator_type = this.filters.validator_type;
                if (this.filters.severity) params.severity = this.filters.severity;
                if (this.filters.status) params.status = this.filters.status;
                if (this.filters.rule_id) params.rule_id = this.filters.rule_id;
                if (this.filters.file_path) params.file_path = this.filters.file_path;

                const data = await apiClient.get('/admin/code-quality/violations', params);

                this.violations = data.violations;
                this.pagination.total = data.total;
                this.pagination.pages = data.total_pages;

                // Update URL with current filters (without reloading)
                this.updateURL();
            } catch (err) {
                codeQualityViolationsLog.error('Failed to load violations:', err);
                this.error = err.message;

                // Redirect to login if unauthorized
                if (err.message.includes('Unauthorized')) {
                    window.location.href = '/admin/login';
                }
            } finally {
                this.loading = false;
            }
        },

        applyFilters() {
            // Reset to page 1 when filters change
            this.pagination.page = 1;
            this.loadViolations();
        },

        async nextPage() {
            if (this.pagination.page < this.pagination.pages) {
                this.pagination.page++;
                await this.loadViolations();
            }
        },

        // 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;
        },

        async previousPage() {
            if (this.pagination.page > 1) {
                this.pagination.page--;
                await this.loadViolations();
            }
        },

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

        updateURL() {
            const params = new URLSearchParams();

            if (this.filters.validator_type) params.set('validator_type', this.filters.validator_type);
            if (this.filters.severity) params.set('severity', this.filters.severity);
            if (this.filters.status) params.set('status', this.filters.status);
            if (this.filters.rule_id) params.set('rule_id', this.filters.rule_id);
            if (this.filters.file_path) params.set('file_path', this.filters.file_path);

            const newURL = params.toString()
                ? `${window.location.pathname}?${params.toString()}`
                : window.location.pathname;

            window.history.replaceState({}, '', newURL);
        }
    };
}