// static/vendor/js/letzshop.js
/**
 * Vendor Letzshop orders management page logic
 */

console.log('[VENDOR LETZSHOP] Loading...');

function vendorLetzshop() {
    console.log('[VENDOR LETZSHOP] vendorLetzshop() called');

    return {
        // Inherit base layout state
        ...data(),

        // Set page identifier
        currentPage: 'letzshop',

        // Tab state
        activeTab: 'orders',

        // Loading states
        loading: false,
        importing: false,
        saving: false,
        testing: false,
        submittingTracking: false,

        // Messages
        error: '',
        successMessage: '',

        // Integration status
        status: {
            is_configured: false,
            is_connected: false,
            auto_sync_enabled: false,
            last_sync_at: null,
            last_sync_status: null
        },

        // Credentials
        credentials: null,
        credentialsForm: {
            api_key: '',
            auto_sync_enabled: false,
            sync_interval_minutes: 15
        },
        showApiKey: false,

        // Orders
        orders: [],
        totalOrders: 0,
        page: 1,
        limit: 20,
        filters: {
            sync_status: ''
        },

        // Order stats
        orderStats: {
            pending: 0,
            confirmed: 0,
            rejected: 0,
            shipped: 0
        },

        // Modals
        showTrackingModal: false,
        showOrderModal: false,
        selectedOrder: null,
        trackingForm: {
            tracking_number: '',
            tracking_carrier: ''
        },

        // Export
        exportLanguage: 'fr',
        exportIncludeInactive: false,
        exporting: false,

        async init() {
            // Guard against multiple initialization
            if (window._vendorLetzshopInitialized) {
                return;
            }
            window._vendorLetzshopInitialized = true;

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

            await this.loadStatus();
            await this.loadOrders();
        },

        /**
         * Load integration status
         */
        async loadStatus() {
            try {
                const response = await apiClient.get('/vendor/letzshop/status');
                this.status = response;

                if (this.status.is_configured) {
                    await this.loadCredentials();
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to load status:', error);
            }
        },

        /**
         * Load credentials (masked)
         */
        async loadCredentials() {
            try {
                const response = await apiClient.get('/vendor/letzshop/credentials');
                this.credentials = response;
                this.credentialsForm.auto_sync_enabled = response.auto_sync_enabled;
                this.credentialsForm.sync_interval_minutes = response.sync_interval_minutes;
            } catch (error) {
                // 404 means not configured, which is fine
                if (error.status !== 404) {
                    console.error('[VENDOR LETZSHOP] Failed to load credentials:', error);
                }
            }
        },

        /**
         * Load orders
         */
        async loadOrders() {
            this.loading = true;
            this.error = '';

            try {
                const params = new URLSearchParams({
                    skip: ((this.page - 1) * this.limit).toString(),
                    limit: this.limit.toString()
                });

                if (this.filters.sync_status) {
                    params.append('sync_status', this.filters.sync_status);
                }

                const response = await apiClient.get(`/vendor/letzshop/orders?${params}`);
                this.orders = response.orders;
                this.totalOrders = response.total;

                // Calculate stats
                await this.loadOrderStats();
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to load orders:', error);
                this.error = error.message || 'Failed to load orders';
            } finally {
                this.loading = false;
            }
        },

        /**
         * Load order stats by fetching counts for each status
         */
        async loadOrderStats() {
            try {
                // Get all orders without filter to calculate stats
                const allResponse = await apiClient.get('/vendor/letzshop/orders?limit=1000');
                const allOrders = allResponse.orders || [];

                this.orderStats = {
                    pending: allOrders.filter(o => o.sync_status === 'pending').length,
                    confirmed: allOrders.filter(o => o.sync_status === 'confirmed').length,
                    rejected: allOrders.filter(o => o.sync_status === 'rejected').length,
                    shipped: allOrders.filter(o => o.sync_status === 'shipped').length
                };
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to load order stats:', error);
            }
        },

        /**
         * Refresh all data
         */
        async refreshData() {
            await this.loadStatus();
            await this.loadOrders();
            this.successMessage = 'Data refreshed';
            setTimeout(() => this.successMessage = '', 3000);
        },

        /**
         * Import orders from Letzshop
         */
        async importOrders() {
            if (!this.status.is_configured) {
                this.error = 'Please configure your API key first';
                this.activeTab = 'settings';
                return;
            }

            this.importing = true;
            this.error = '';

            try {
                const response = await apiClient.post('/vendor/letzshop/orders/import', {
                    operation: 'order_import'
                });

                if (response.success) {
                    this.successMessage = response.message;
                    await this.loadOrders();
                } else {
                    this.error = response.message || 'Import failed';
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Import failed:', error);
                this.error = error.message || 'Failed to import orders';
            } finally {
                this.importing = false;
                setTimeout(() => this.successMessage = '', 5000);
            }
        },

        /**
         * Save credentials
         */
        async saveCredentials() {
            if (!this.credentialsForm.api_key && !this.credentials) {
                this.error = 'Please enter an API key';
                return;
            }

            this.saving = true;
            this.error = '';

            try {
                const payload = {
                    auto_sync_enabled: this.credentialsForm.auto_sync_enabled,
                    sync_interval_minutes: parseInt(this.credentialsForm.sync_interval_minutes)
                };

                if (this.credentialsForm.api_key) {
                    payload.api_key = this.credentialsForm.api_key;
                }

                const response = await apiClient.post('/vendor/letzshop/credentials', payload);
                this.credentials = response;
                this.credentialsForm.api_key = '';
                this.status.is_configured = true;
                this.successMessage = 'Credentials saved successfully';
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to save credentials:', error);
                this.error = error.message || 'Failed to save credentials';
            } finally {
                this.saving = false;
                setTimeout(() => this.successMessage = '', 5000);
            }
        },

        /**
         * Test connection
         */
        async testConnection() {
            this.testing = true;
            this.error = '';

            try {
                const response = await apiClient.post('/vendor/letzshop/test');

                if (response.success) {
                    this.successMessage = `Connection successful (${response.response_time_ms?.toFixed(0)}ms)`;
                } else {
                    this.error = response.error_details || 'Connection failed';
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Connection test failed:', error);
                this.error = error.message || 'Connection test failed';
            } finally {
                this.testing = false;
                setTimeout(() => this.successMessage = '', 5000);
            }
        },

        /**
         * Delete credentials
         */
        async deleteCredentials() {
            if (!confirm('Are you sure you want to remove your Letzshop credentials?')) {
                return;
            }

            try {
                await apiClient.delete('/vendor/letzshop/credentials');
                this.credentials = null;
                this.status.is_configured = false;
                this.credentialsForm = {
                    api_key: '',
                    auto_sync_enabled: false,
                    sync_interval_minutes: 15
                };
                this.successMessage = 'Credentials removed';
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to delete credentials:', error);
                this.error = error.message || 'Failed to remove credentials';
            }
            setTimeout(() => this.successMessage = '', 5000);
        },

        /**
         * Confirm order
         */
        async confirmOrder(order) {
            if (!confirm('Confirm this order?')) {
                return;
            }

            try {
                const response = await apiClient.post(`/vendor/letzshop/orders/${order.id}/confirm`);

                if (response.success) {
                    this.successMessage = 'Order confirmed';
                    await this.loadOrders();
                } else {
                    this.error = response.message || 'Failed to confirm order';
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to confirm order:', error);
                this.error = error.message || 'Failed to confirm order';
            }
            setTimeout(() => this.successMessage = '', 5000);
        },

        /**
         * Reject order
         */
        async rejectOrder(order) {
            if (!confirm('Reject this order? This action cannot be undone.')) {
                return;
            }

            try {
                const response = await apiClient.post(`/vendor/letzshop/orders/${order.id}/reject`);

                if (response.success) {
                    this.successMessage = 'Order rejected';
                    await this.loadOrders();
                } else {
                    this.error = response.message || 'Failed to reject order';
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to reject order:', error);
                this.error = error.message || 'Failed to reject order';
            }
            setTimeout(() => this.successMessage = '', 5000);
        },

        /**
         * Open tracking modal
         */
        openTrackingModal(order) {
            this.selectedOrder = order;
            this.trackingForm = {
                tracking_number: order.tracking_number || '',
                tracking_carrier: order.tracking_carrier || ''
            };
            this.showTrackingModal = true;
        },

        /**
         * Submit tracking
         */
        async submitTracking() {
            if (!this.trackingForm.tracking_number || !this.trackingForm.tracking_carrier) {
                this.error = 'Please fill in all fields';
                return;
            }

            this.submittingTracking = true;

            try {
                const response = await apiClient.post(
                    `/vendor/letzshop/orders/${this.selectedOrder.id}/tracking`,
                    this.trackingForm
                );

                if (response.success) {
                    this.showTrackingModal = false;
                    this.successMessage = 'Tracking information saved';
                    await this.loadOrders();
                } else {
                    this.error = response.message || 'Failed to save tracking';
                }
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Failed to set tracking:', error);
                this.error = error.message || 'Failed to save tracking';
            } finally {
                this.submittingTracking = false;
            }
            setTimeout(() => this.successMessage = '', 5000);
        },

        /**
         * View order details
         */
        viewOrderDetails(order) {
            this.selectedOrder = order;
            this.showOrderModal = true;
        },

        /**
         * Format date for display
         */
        formatDate(dateStr) {
            if (!dateStr) return 'N/A';
            const date = new Date(dateStr);
            return date.toLocaleDateString() + ' ' + date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
        },

        /**
         * Download product export CSV
         */
        async downloadExport() {
            this.exporting = true;
            this.error = '';

            try {
                const params = new URLSearchParams({
                    language: this.exportLanguage,
                    include_inactive: this.exportIncludeInactive.toString()
                });

                // Get the token for authentication
                const token = localStorage.getItem('wizamart_token');
                if (!token) {
                    throw new Error('Not authenticated');
                }

                const response = await fetch(`/api/v1/vendor/letzshop/export?${params}`, {
                    method: 'GET',
                    headers: {
                        'Authorization': `Bearer ${token}`
                    }
                });

                if (!response.ok) {
                    const errorData = await response.json().catch(() => ({}));
                    throw new Error(errorData.detail || 'Export failed');
                }

                // Get filename from Content-Disposition header
                const contentDisposition = response.headers.get('Content-Disposition');
                let filename = `letzshop_export_${this.exportLanguage}.csv`;
                if (contentDisposition) {
                    const match = contentDisposition.match(/filename="(.+)"/);
                    if (match) {
                        filename = match[1];
                    }
                }

                // Download the file
                const blob = await response.blob();
                const url = window.URL.createObjectURL(blob);
                const link = document.createElement('a');
                link.href = url;
                link.download = filename;
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
                window.URL.revokeObjectURL(url);

                this.successMessage = `Export downloaded: ${filename}`;
            } catch (error) {
                console.error('[VENDOR LETZSHOP] Export failed:', error);
                this.error = error.message || 'Failed to export products';
            } finally {
                this.exporting = false;
                setTimeout(() => this.successMessage = '', 5000);
            }
        }
    };
}