"use strict";

// Class definition
var KTFormsQuillAutosave = function () {
    // Private functions
    var exampleAutosave = function () {
        var Delta = Quill.import('delta');
        var quill = new Quill('#kt_docs_quill_autosave', {
            modules: {
                toolbar: true
            },
            placeholder: 'Type your text here...',
            theme: 'snow'
        });

        // Store accumulated changes
        var change = new Delta();
        quill.on('text-change', function (delta) {
            change = change.compose(delta);
        });

        // Save periodically
        setInterval(function () {
            if (change.length() > 0) {
                console.log('Saving changes', change);
                /*
                Send partial changes
                $.post('/your-endpoint', {
                partial: JSON.stringify(change)
                });

                Send entire document
                $.post('/your-endpoint', {
                doc: JSON.stringify(quill.getContents())
                });
                */
                change = new Delta();
            }
        }, 5 * 1000);

        // Check for unsaved data
        window.onbeforeunload = function () {
            if (change.length() > 0) {
                return 'There are unsaved changes. Are you sure you want to leave?';
            }
        }
    }

    return {
        // Public Functions
        init: function () {
            exampleAutosave();
        }
    };
}();

// On document ready
KTUtil.onDOMContentLoaded(function () {
    KTFormsQuillAutosave.init();
});