document.addEventListener('DOMContentLoaded', function () {
    let currentKA = null;
    
    console.log('Freshdesk app loaded');
    
    // Listen for messages from the KB iframe
    window.addEventListener('message', function(event) {
        console.log('Received message:', event.origin, event.data);
        
        if (event.origin !== 'https://kb.jv.com') {
            console.log('Ignoring message from wrong origin');
            return;
        }
        
        if (event.data.type === 'ka-viewed') {
            currentKA = event.data.kaNumber;
            console.log('Current KA set to:', currentKA);
        }
    });
    
    app.initialized()
        .then(function (client) {
            console.log('KB app initialized');
            
            // Check if ticket already has a KA number and navigate to it
            client.data.get('ticket')
                .then(function(data) {
                    const existingKA = data.ticket.custom_fields.cf_ka_number;
                    console.log('Existing KA in ticket:', existingKA);
                    
                    if (existingKA) {
                        // Send message to KB iframe to navigate to this article
                        const iframe = document.getElementById('kb-iframe');
                        iframe.contentWindow.postMessage({
                            type: 'navigate-to-ka',
                            kaNumber: existingKA
                        }, 'https://kb.jv.com');
                    }
                })
                .catch(function(error) {
                    console.error('Error reading ticket:', error);
                });
            
            document.getElementById('insert-ka-btn').addEventListener('click', function() {
                console.log('Insert button clicked, currentKA:', currentKA);
                
                if (!currentKA) {
                    client.interface.trigger('showNotify', {
                        type: 'warning',
                        message: 'No article selected. Please view an article first.'
                    });
                    return;
                }
                
                client.interface.trigger("setValue", {
                    id: "cf_ka_number",
                    value: currentKA
                })
                    .then(function(data) {
                        if (data) {}
                        return client.interface.trigger('showNotify', {
                            type: 'success',
                            message: currentKA + ' attached to ticket'
                        });
                    })
                    .catch(function(error) {
                        client.interface.trigger('showNotify', {
                            type: 'error',
                            message: 'Failed to attach KA#: ' + error.message
                        });
                    });
            });
        })
        .catch(function(error) {
            console.error('Failed to initialize app:', error);
            document.body.innerHTML = '<p>Failed to load app. Please refresh.</p>';
        });
});