// static/vendor/js/content-pages.js

// Use centralized logger
const contentPagesLog = window.LogConfig.loggers.contentPages || window.LogConfig.createLogger('contentPages');

// ============================================
// VENDOR CONTENT PAGES MANAGER
// ============================================
function vendorContentPagesManager() {
    return {
        // Inherit base layout functionality from init-alpine.js
        ...data(),

        // Page identifier for sidebar active state
        currentPage: 'content-pages',

        // State
        loading: false,
        error: null,
        activeTab: 'platform',
        searchQuery: '',

        // Data
        platformPages: [],  // Platform default pages
        customPages: [],    // Vendor's own pages (overrides + custom)
        overrideMap: {},    // Map of slug -> page id for quick lookup
        cmsUsage: null,     // CMS usage statistics

        // Initialize
        async init() {
            contentPagesLog.info('=== VENDOR CONTENT PAGES MANAGER INITIALIZING ===');

            // Prevent multiple initializations
            if (window._vendorContentPagesInitialized) {
                contentPagesLog.warn('Content pages manager already initialized, skipping...');
                return;
            }
            window._vendorContentPagesInitialized = true;

            try {
                // IMPORTANT: Call parent init first to set vendorCode from URL
                const parentInit = data().init;
                if (parentInit) {
                    await parentInit.call(this);
                }

                await Promise.all([
                    this.loadPages(),
                    this.loadCmsUsage()
                ]);

                contentPagesLog.info('=== VENDOR CONTENT PAGES MANAGER INITIALIZATION COMPLETE ===');
            } catch (error) {
                contentPagesLog.error('Failed to initialize content pages:', error);
                this.error = 'Failed to initialize. Please refresh the page.';
                this.loading = false;
            }
        },

        // Load all pages
        async loadPages() {
            this.loading = true;
            this.error = null;

            try {
                contentPagesLog.info('Loading content pages...');

                // Load platform defaults and vendor pages in parallel
                const [platformResponse, vendorResponse] = await Promise.all([
                    apiClient.get('/vendor/content-pages/'),
                    apiClient.get('/vendor/content-pages/overrides')
                ]);

                // Platform pages - filter to only show actual platform defaults
                const allPages = platformResponse.data || platformResponse || [];
                this.platformPages = allPages.filter(p => p.is_platform_default);

                // Vendor's custom pages (includes overrides)
                this.customPages = vendorResponse.data || vendorResponse || [];

                // Build override map for quick lookups
                this.overrideMap = {};
                this.customPages.forEach(page => {
                    if (page.is_vendor_override) {
                        this.overrideMap[page.slug] = page.id;
                    }
                });

                contentPagesLog.info(`Loaded ${this.platformPages.length} platform pages, ${this.customPages.length} vendor pages`);

            } catch (err) {
                contentPagesLog.error('Error loading pages:', err);
                this.error = err.message || 'Failed to load pages';
            } finally {
                this.loading = false;
            }
        },

        // Load CMS usage statistics
        async loadCmsUsage() {
            try {
                contentPagesLog.info('Loading CMS usage...');
                const response = await apiClient.get('/vendor/content-pages/usage');
                this.cmsUsage = response.data || response;
                contentPagesLog.info('CMS usage loaded:', this.cmsUsage);
            } catch (err) {
                contentPagesLog.error('Error loading CMS usage:', err);
                // Non-critical - don't set error state
            }
        },

        // Check if vendor has overridden a platform page
        hasOverride(slug) {
            return slug in this.overrideMap;
        },

        // Get override page ID
        getOverrideId(slug) {
            return this.overrideMap[slug];
        },

        // Create an override for a platform page
        async createOverride(platformPage) {
            contentPagesLog.info('Creating override for:', platformPage.slug);

            try {
                // Create a new vendor page with the same slug as the platform page
                const payload = {
                    slug: platformPage.slug,
                    title: platformPage.title,
                    content: platformPage.content,
                    content_format: platformPage.content_format || 'html',
                    meta_description: platformPage.meta_description,
                    meta_keywords: platformPage.meta_keywords,
                    is_published: true,
                    show_in_header: platformPage.show_in_header,
                    show_in_footer: platformPage.show_in_footer,
                    display_order: platformPage.display_order
                };

                const response = await apiClient.post('/vendor/content-pages/', payload);
                const newPage = response.data || response;

                contentPagesLog.info('Override created:', newPage.id);

                // Redirect to edit the new page
                window.location.href = `/vendor/${this.vendorCode}/content-pages/${newPage.id}/edit`;

            } catch (err) {
                contentPagesLog.error('Error creating override:', err);
                this.error = err.message || 'Failed to create override';
            }
        },

        // Delete a page
        async deletePage(page) {
            const message = page.is_vendor_override
                ? `Are you sure you want to delete your override for "${page.title}"? The platform default will be shown instead.`
                : `Are you sure you want to delete "${page.title}"? This cannot be undone.`;

            if (!confirm(message)) {
                return;
            }

            try {
                contentPagesLog.info('Deleting page:', page.id);

                await apiClient.delete(`/vendor/content-pages/${page.id}`);

                // Remove from local state
                this.customPages = this.customPages.filter(p => p.id !== page.id);

                // Update override map
                if (page.is_vendor_override) {
                    delete this.overrideMap[page.slug];
                }

                contentPagesLog.info('Page deleted successfully');

            } catch (err) {
                contentPagesLog.error('Error deleting page:', err);
                this.error = err.message || 'Failed to delete page';
            }
        },

        // Filtered platform pages based on search
        get filteredPlatformPages() {
            if (!this.searchQuery) {
                return this.platformPages;
            }
            const query = this.searchQuery.toLowerCase();
            return this.platformPages.filter(page =>
                page.title.toLowerCase().includes(query) ||
                page.slug.toLowerCase().includes(query)
            );
        },

        // Filtered custom pages based on search
        get filteredCustomPages() {
            if (!this.searchQuery) {
                return this.customPages;
            }
            const query = this.searchQuery.toLowerCase();
            return this.customPages.filter(page =>
                page.title.toLowerCase().includes(query) ||
                page.slug.toLowerCase().includes(query)
            );
        },

        // Format date for display
        formatDate(dateStr) {
            if (!dateStr) return '—';
            const date = new Date(dateStr);
            const locale = window.VENDOR_CONFIG?.locale || 'en-GB';
            return date.toLocaleDateString(locale, {
                day: '2-digit',
                month: 'short',
                year: 'numeric'
            });
        }
    };
}