// Initialize components on document ready
$(function() {
    // Initialize tooltips
    $('[data-toggle="tooltip"]').tooltip();

    // Initialize select2 for dropdowns
    $('.select2').select2();

    // Initialize client groups select2
    $('#client_groups').select2({
        placeholder: app.lang.select_client_groups,
        allowClear: true
    });

    // Handle message character count
    function updateCharCount(textarea, charCount, msgCount) {
        var chars = $(textarea).val().length;
        $(charCount).text(chars);
        $(msgCount).text(Math.ceil(chars / 160));
    }

    $('#message').on('keyup', function() {
        updateCharCount(this, '#char_count', '#messages_count');
    });

    $('#message_bulk').on('keyup', function() {
        updateCharCount(this, '#char_count_bulk', '#messages_count_bulk');
    });

    // Handle client groups selection
    $('#client_groups').on('change', function() {
        var selectedGroups = $(this).val();
        if (selectedGroups) {
            $.get(admin_url + 'hubtel_sms/get_recipients_preview', {
                groups: selectedGroups
            }, function(response) {
                $('#recipients_preview').html(response.html);
                $('#recipients_count').text(response.count);
            }, 'json');
        } else {
            $('#recipients_preview').html('');
            $('#recipients_count').text('0');
        }
    });

    // Handle template selection for single SMS
    $('#template_id').on('change', function() {
        var templateId = $(this).val();
        if (templateId) {
            $.get(admin_url + 'hubtel_sms/get_template/' + templateId, function(response) {
                if (response.success) {
                    $('#message').val(response.template.template);
                    updateCharCount('#message', '#char_count', '#messages_count');
                }
            }, 'json');
        }
    });

    // Handle template selection for bulk SMS
    $('#template_id_bulk').on('change', function() {
        var templateId = $(this).val();
        if (templateId) {
            $.get(admin_url + 'hubtel_sms/get_template/' + templateId, function(response) {
                if (response.success) {
                    $('#message_bulk').val(response.template.template);
                    updateCharCount('#message_bulk', '#char_count_bulk', '#messages_count_bulk');
                }
            }, 'json');
        }
    });

    // Handle form submissions
    $('#sms-form').on('submit', function() {
        var $btn = $('#sendSmsBtn').prop('disabled', true);
        $btn.html('<i class="fa fa-spinner fa-spin"></i> ' + app.lang.sending);
    });

    $('#bulk-sms-form').on('submit', function() {
        if (!confirm(app.lang.bulk_sms_confirm)) {
            return false;
        }
        var $btn = $('#sendBulkSmsBtn').prop('disabled', true);
        $btn.html('<i class="fa fa-spinner fa-spin"></i> ' + app.lang.sending);
    });
});

// Function to show send SMS modal
function send_sms_modal() {
    $('#send_sms_modal').modal('show');
    $('#send_sms_modal').find('form')[0].reset();
    $('#template_id').val('').trigger('change');
    $('#char_count').text('0');
    $('#messages_count').text('1');
}

// Function to show bulk SMS modal
function bulk_sms_modal() {
    $('#bulk_sms_modal').modal('show');
    $('#bulk_sms_modal').find('form')[0].reset();
    $('#client_groups').val('').trigger('change');
    $('#template_id_bulk').val('').trigger('change');
    $('#char_count_bulk').text('0');
    $('#messages_count_bulk').text('1');
    $('#recipients_preview').html('');
    $('#recipients_count').text('0');
}

// Function to view message details
function view_message(id) {
    $('#message_details').html('<div class="text-center"><i class="fa fa-spinner fa-spin fa-2x"></i></div>');
    $('#view_message_modal').modal('show');
    
    $.get(admin_url + 'hubtel_sms/view_message/' + id, function(response) {
        $('#message_details').html(response);
    });
}

// Function to preview template
function preview_template(id) {
    $('#template_preview').html('<div class="text-center"><i class="fa fa-spinner fa-spin fa-2x"></i></div>');
    $('#preview_template_modal').modal('show');
    
    $.get(admin_url + 'hubtel_sms/preview_template/' + id, function(response) {
        $('#template_preview').html(response);
    });
}

// Function to resend SMS
function resend_sms(id) {
    if (confirm(app.lang.confirm_action_prompt)) {
        $.get(admin_url + 'hubtel_sms/resend/' + id, function(response) {
            if (response.success) {
                alert_float('success', response.message);
                location.reload();
            } else {
                alert_float('danger', response.message);
            }
        }, 'json');
    }
}