/* ========================================================================
 * OctoberCMS: front-end JavaScript framework
 * http://octobercms.com
 * ========================================================================
 * Copyright 2017 Alexey Bobkov, Samuel Georges
 * ======================================================================== */

/* October CMS JSON Parser */
"use strict";!function(){function a(e,r,n){for(var t="",o=r;o<e.length;o++){if(n&&n===e[o])return t;if(!n&&(" "===e[o]||":"===e[o]))return t;t+=e[o],"\\"===e[o]&&o+1<e.length&&(t+=e[o+1],o++)}throw new Error("Broken JSON syntax near "+t)}function u(e,r){if('"'===e[r]||"'"===e[r]){for(var n=e[r],t=r+1;t<e.length;t++)if("\\"===e[t])n+=e[t],t+1<e.length&&(n+=e[t+1]),t++;else{if(e[t]===e[r])return{originLength:(n+=e[r]).length,body:n};n+=e[t]}throw new Error("Broken JSON string body near "+n)}if("t"===e[r]){if(e.indexOf("true",r)===r)return{originLength:"true".length,body:"true"};throw new Error("Broken JSON boolean body near "+e.substr(0,r+10))}if("f"===e[r]){if(e.indexOf("f",r)===r)return{originLength:"false".length,body:"false"};throw new Error("Broken JSON boolean body near "+e.substr(0,r+10))}if("n"===e[r]){if(e.indexOf("null",r)===r)return{originLength:"null".length,body:"null"};throw new Error("Broken JSON boolean body near "+e.substr(0,r+10))}if("-"===e[r]||"+"===e[r]||"."===e[r]||"0"<=e[r]&&e[r]<="9"){for(n="",t=r;t<e.length;t++){if(!("-"===e[t]||"+"===e[t]||"."===e[t]||"0"<=e[t]&&e[t]<="9"))return{originLength:n.length,body:n};n+=e[t]}throw new Error("Broken JSON number body near "+n)}if("{"!==e[r]&&"["!==e[r])throw new Error("Broken JSON body near "+e.substr(0<=r-5?r-5:0,50));var o=[e[r]];for(n=e[r],t=r+1;t<e.length;t++){if(n+=e[t],"\\"===e[t])t+1<e.length&&(n+=e[t+1]),t++;else if('"'===e[t])'"'===o[o.length-1]?o.pop():"'"!==o[o.length-1]&&o.push(e[t]);else if("'"===e[t])"'"===o[o.length-1]?o.pop():'"'!==o[o.length-1]&&o.push(e[t]);else if('"'!==o[o.length-1]&&"'"!==o[o.length-1])if("{"===e[t])o.push("{");else if("}"===e[t]){if("{"!==o[o.length-1])throw new Error("Broken JSON "+("{"===e[r]?"object":"array")+" body near "+n);o.pop()}else if("["===e[t])o.push("[");else if("]"===e[t]){if("["!==o[o.length-1])throw new Error("Broken JSON "+("{"===e[r]?"object":"array")+" body near "+n);o.pop()}if(!o.length)return{originLength:t-r,body:n}}throw new Error("Broken JSON "+("{"===e[r]?"object":"array")+" body near "+n)}function s(e){return" "===e||"\n"===e||"\t"===e}void 0===$.oc&&($.oc={}),$.oc.JSON=function(e){var r=function e(r){if(!(r=r.trim()).length)throw new Error("Broken JSON object.");for(var n="";r&&","===r[0];)r=r.substr(1);if('"'===r[0]||"'"===r[0]){if(r[r.length-1]!==r[0])throw new Error("Invalid string JSON object.");for(var t='"',o=1;o<r.length;o++)if("\\"===r[o])"'"===r[o+1]||(t+=r[o]),t+=r[o+1],o++;else{if(r[o]===r[0])return t+='"';'"'===r[o]?t+='\\"':t+=r[o]}throw new Error("Invalid string JSON object.")}if("true"===r||"false"===r)return r;if("null"===r)return"null";var i,f=parseFloat(r);if(!isNaN(f))return f.toString();if("{"===r[0]){var l="needKey";for(n="{",o=1;o<r.length;o++)if(!s(r[o]))if("needKey"!==l||'"'!==r[o]&&"'"!==r[o]){if("needKey"===l&&"\\"!==(i=r[o])[0]&&("a"<=i[0]&&i[0]<="z"||"A"<=i[0]&&i[0]<="Z"||"_"===i[0]||"0"<=i[0]&&i[0]<="9"||"$"===i[0]||255<i.charCodeAt(0))){var h;n+='"',n+=h=a(r,o),n+='"',o+=h.length-1,l="afterKey"}else if("afterKey"===l&&":"===r[o])n+=":",l=":";else if(":"===l)o=o+(t=u(r,o)).originLength-1,n+=e(t.body),l="afterBody";else if("afterBody"===l||"needKey"===l){for(var g=o;","===r[g]||s(r[g]);)g++;if("}"===r[g]&&g===r.length-1){for(;","===n[n.length-1];)n=n.substr(0,n.length-1);return n+="}"}g!==o&&"{"!==n&&(n+=",",l="needKey",o=g-1)}}else n+='"'+(h=a(r,o+1,r[o]))+'"',o+=h.length,o+=1,l="afterKey";throw new Error("Broken JSON object near "+n)}if("["===r[0]){for(n="[",l="needBody",o=1;o<r.length;o++)if(" "!==r[o]&&"\n"!==r[o]&&"\t"!==r[o])if("needBody"===l){if(","===r[o]){n+="null,";continue}if("]"===r[o]&&o===r.length-1)return","===n[n.length-1]&&(n=n.substr(0,n.length-1)),n+="]";o=o+(t=u(r,o)).originLength-1,n+=e(t.body),l="afterBody"}else if("afterBody"===l)if(","===r[o])for(n+=",",l="needBody";","===r[o+1]||s(r[o+1]);)","===r[o+1]&&(n+="null,"),o++;else if("]"===r[o]&&o===r.length-1)return n+="]";throw new Error("Broken JSON array near "+n)}}(e);return JSON.parse(r)}}();

if (window.jQuery === undefined) {
    throw new Error('The jQuery library is not loaded. The OctoberCMS framework cannot be initialized.');
}
if (window.jQuery.request !== undefined) {
    throw new Error('The OctoberCMS framework is already loaded.');
}

+function ($) { "use strict";

    var Request = function (element, handler, options) {
        var $el = this.$el = $(element);
        this.options = options || {};

        /*
         * Validate handler name
         */
        if (handler === undefined) {
            throw new Error('The request handler name is not specified.')
        }

        if (!handler.match(/^(?:\w+\:{2})?on*/)) {
            throw new Error('Invalid handler name. The correct handler name format is: "onEvent".')
        }

        /*
         * Prepare the options and execute the request
         */
        var $form = options.form ? $(options.form) : $el.closest('form'),
            $triggerEl = !!$form.length ? $form : $el,
            context = { handler: handler, options: options }

        $el.trigger('ajaxSetup', [context])
        var _event = jQuery.Event('oc.beforeRequest')
        $triggerEl.trigger(_event, context)
        if (_event.isDefaultPrevented()) return

        var loading = options.loading !== undefined ? options.loading : null,
            url = options.url !== undefined ? options.url : window.location.href,
            isRedirect = options.redirect !== undefined && options.redirect.length,
            useFlash = options.flash !== undefined,
            useFiles = options.files !== undefined

        if (useFiles && typeof FormData === 'undefined') {
            console.warn('This browser does not support file uploads via FormData')
            useFiles = false
        }

        if ($.type(loading) == 'string') {
            loading = $(loading)
        }

        /*
         * Request headers
         */
        var requestHeaders = {
            'X-OCTOBER-REQUEST-HANDLER': handler,
            'X-OCTOBER-REQUEST-PARTIALS': this.extractPartials(options.update)
        }

        if (useFlash) {
            requestHeaders['X-OCTOBER-REQUEST-FLASH'] = 1
        }

        /*
         * Request data
         */
        var requestData,
            inputName,
            data = {}

        $.each($el.parents('[data-request-data]').toArray().reverse(), function extendRequest() {
            $.extend(data, paramToObj('data-request-data', $(this).data('request-data')))
        })

        if ($el.is(':input') && !$form.length) {
            inputName = $el.attr('name')
            if (inputName !== undefined && options.data[inputName] === undefined) {
                options.data[inputName] = $el.val()
            }
        }

        if (options.data !== undefined && !$.isEmptyObject(options.data)) {
            $.extend(data, options.data)
        }

        if (useFiles) {
            requestData = new FormData($form.length ? $form.get(0) : undefined)

            if ($el.is(':file') && inputName) {
                $.each($el.prop('files'), function() {
                    requestData.append(inputName, this)
                })

                delete data[inputName]
            }

            $.each(data, function(key) {
                requestData.append(key, this)
            })
        }
        else {
            requestData = [$form.serialize(), $.param(data)].filter(Boolean).join('&')
        }

        /*
         * Request options
         */
        var requestOptions = {
            url: url,
            crossDomain: false,
            global: options.ajaxGlobal,
            context: context,
            headers: requestHeaders,
            success: function(data, textStatus, jqXHR) {
                /*
                 * Halt here if beforeUpdate() or data-request-before-update returns false
                 */
                if (this.options.beforeUpdate.apply(this, [data, textStatus, jqXHR]) === false) return
                if (options.evalBeforeUpdate && eval('(function($el, context, data, textStatus, jqXHR) {'+options.evalBeforeUpdate+'}.call($el.get(0), $el, context, data, textStatus, jqXHR))') === false) return

                /*
                 * Trigger 'ajaxBeforeUpdate' on the form, halt if event.preventDefault() is called
                 */
                var _event = jQuery.Event('ajaxBeforeUpdate')
                $triggerEl.trigger(_event, [context, data, textStatus, jqXHR])
                if (_event.isDefaultPrevented()) return

                if (useFlash && data['X_OCTOBER_FLASH_MESSAGES']) {
                    $.each(data['X_OCTOBER_FLASH_MESSAGES'], function(type, message) {
                        requestOptions.handleFlashMessage(message, type)
                    })
                }

                /*
                 * Proceed with the update process
                 */
                var updatePromise = requestOptions.handleUpdateResponse(data, textStatus, jqXHR)

                updatePromise.done(function() {
                    $triggerEl.trigger('ajaxSuccess', [context, data, textStatus, jqXHR])
                    options.evalSuccess && eval('(function($el, context, data, textStatus, jqXHR) {'+options.evalSuccess+'}.call($el.get(0), $el, context, data, textStatus, jqXHR))')
                })

                return updatePromise
            },
            error: function(jqXHR, textStatus, errorThrown) {
                var errorMsg,
                    updatePromise = $.Deferred()

                if ((window.ocUnloading !== undefined && window.ocUnloading) || errorThrown == 'abort')
                    return

                /*
                 * Disable redirects
                 */
                isRedirect = false
                options.redirect = null

                /*
                 * Error 406 is a "smart error" that returns response object that is
                 * processed in the same fashion as a successful response.
                 */
                if (jqXHR.status == 406 && jqXHR.responseJSON) {
                    errorMsg = jqXHR.responseJSON['X_OCTOBER_ERROR_MESSAGE']
                    updatePromise = requestOptions.handleUpdateResponse(jqXHR.responseJSON, textStatus, jqXHR)
                }
                /*
                 * Standard error with standard response text
                 */
                else {
                    errorMsg = jqXHR.responseText ? jqXHR.responseText : jqXHR.statusText
                    updatePromise.resolve()
                }

                updatePromise.done(function() {
                    $el.data('error-message', errorMsg)

                    /*
                     * Trigger 'ajaxError' on the form, halt if event.preventDefault() is called
                     */
                    var _event = jQuery.Event('ajaxError')
                    $triggerEl.trigger(_event, [context, errorMsg, textStatus, jqXHR])
                    if (_event.isDefaultPrevented()) return

                    /*
                     * Halt here if the data-request-error attribute returns false
                     */
                    if (options.evalError && eval('(function($el, context, errorMsg, textStatus, jqXHR) {'+options.evalError+'}.call($el.get(0), $el, context, errorMsg, textStatus, jqXHR))') === false)
                        return

                    requestOptions.handleErrorMessage(errorMsg)
                })

                return updatePromise
            },
            complete: function(data, textStatus, jqXHR) {
                $triggerEl.trigger('ajaxComplete', [context, data, textStatus, jqXHR])
                options.evalComplete && eval('(function($el, context, data, textStatus, jqXHR) {'+options.evalComplete+'}.call($el.get(0), $el, context, data, textStatus, jqXHR))')
            },

            /*
             * Custom function, requests confirmation from the user
             */
            handleConfirmMessage: function(message) {
                var _event = jQuery.Event('ajaxConfirmMessage')

                _event.promise = $.Deferred()
                if ($(window).triggerHandler(_event, [message]) !== undefined) {
                    _event.promise.done(function() {
                        options.confirm = null
                        new Request(element, handler, options)
                    })
                    return false
                }

                if (_event.isDefaultPrevented()) return
                if (message) return confirm(message)
            },

            /*
             * Custom function, display an error message to the user
             */
            handleErrorMessage: function(message) {
                var _event = jQuery.Event('ajaxErrorMessage')
                $(window).trigger(_event, [message])
                if (_event.isDefaultPrevented()) return
                if (message) alert(message)
            },

            /*
             * Custom function, focus fields with errors
             */
            handleValidationMessage: function(message, fields) {
                $triggerEl.trigger('ajaxValidation', [context, message, fields])

                var isFirstInvalidField = true
                $.each(fields, function focusErrorField(fieldName, fieldMessages) {
                    fieldName = fieldName.replace(/\.(\w+)/g, '[$1]')

                    var fieldElement = $form.find('[name="'+fieldName+'"], [name="'+fieldName+'[]"], [name$="['+fieldName+']"], [name$="['+fieldName+'][]"]').filter(':enabled').first()
                    if (fieldElement.length > 0) {

                        var _event = jQuery.Event('ajaxInvalidField')
                        $(window).trigger(_event, [fieldElement.get(0), fieldName, fieldMessages, isFirstInvalidField])

                        if (isFirstInvalidField) {
                            if (!_event.isDefaultPrevented()) fieldElement.focus()
                            isFirstInvalidField = false
                        }
                    }
                })
            },

            /*
             * Custom function, display a flash message to the user
             */
            handleFlashMessage: function(message, type) {},

            /*
             * Custom function, redirect the browser to another location
             */
            handleRedirectResponse: function(url) {
                window.location.href = url
            },

            /*
             * Custom function, handle any application specific response values
             * Using a promisary object here in case injected assets need time to load
             */
            handleUpdateResponse: function(data, textStatus, jqXHR) {

                /*
                 * Update partials and finish request
                 */
                var updatePromise = $.Deferred().done(function() {
                    for (var partial in data) {
                        /*
                         * If a partial has been supplied on the client side that matches the server supplied key, look up
                         * it's selector and use that. If not, we assume it is an explicit selector reference.
                         */
                        var selector = (options.update[partial]) ? options.update[partial] : partial
                        if ($.type(selector) == 'string' && selector.charAt(0) == '@') {
                            $(selector.substring(1)).append(data[partial]).trigger('ajaxUpdate', [context, data, textStatus, jqXHR])
                        }
                        else if ($.type(selector) == 'string' && selector.charAt(0) == '^') {
                            $(selector.substring(1)).prepend(data[partial]).trigger('ajaxUpdate', [context, data, textStatus, jqXHR])
                        }
                        else {
                            $(selector).trigger('ajaxBeforeReplace')
                            $(selector).html(data[partial]).trigger('ajaxUpdate', [context, data, textStatus, jqXHR])
                        }
                    }

                    /*
                     * Wait for .html() method to finish rendering from partial updates
                     */
                    setTimeout(function() {
                        $(window)
                            .trigger('ajaxUpdateComplete', [context, data, textStatus, jqXHR])
                            .trigger('resize')
                    }, 0)
                })

                /*
                 * Handle redirect
                 */
                if (data['X_OCTOBER_REDIRECT']) {
                    options.redirect = data['X_OCTOBER_REDIRECT']
                    isRedirect = true
                }

                if (isRedirect) {
                    requestOptions.handleRedirectResponse(options.redirect)
                }

                /*
                 * Handle validation
                 */
                if (data['X_OCTOBER_ERROR_FIELDS']) {
                    requestOptions.handleValidationMessage(data['X_OCTOBER_ERROR_MESSAGE'], data['X_OCTOBER_ERROR_FIELDS'])
                }

                /*
                 * Handle asset injection
                 */
                 if (data['X_OCTOBER_ASSETS']) {
                    assetManager.load(data['X_OCTOBER_ASSETS'], $.proxy(updatePromise.resolve, updatePromise))
                 }
                 else {
                    updatePromise.resolve()
                }

                return updatePromise
            }
        }

        if (useFiles) {
            requestOptions.processData = requestOptions.contentType = false
        }

        /*
         * Allow default business logic to be called from user functions
         */
        context.success = requestOptions.success
        context.error = requestOptions.error
        context.complete = requestOptions.complete
        requestOptions = $.extend(requestOptions, options)
        requestOptions.data = requestData

        /*
         * Initiate request
         */
        if (options.confirm && !requestOptions.handleConfirmMessage(options.confirm)) {
            return
        }

        if (loading) loading.show()
        $(window).trigger('ajaxBeforeSend', [context])
        $el.trigger('ajaxPromise', [context])

        return $.ajax(requestOptions)
            .fail(function(jqXHR, textStatus, errorThrown) {
                if (!isRedirect) {
                    $el.trigger('ajaxFail', [context, textStatus, jqXHR])
                }
                if (loading) loading.hide()
            })
            .done(function(data, textStatus, jqXHR) {
                if (!isRedirect) {
                    $el.trigger('ajaxDone', [context, data, textStatus, jqXHR])
                }
                if (loading) loading.hide()
            })
            .always(function(dataOrXhr, textStatus, xhrOrError) {
                $el.trigger('ajaxAlways', [context, dataOrXhr, textStatus, xhrOrError])
            })
    }

    Request.DEFAULTS = {
        update: {},
        type : 'POST',
        beforeUpdate: function(data, textStatus, jqXHR) {},
        evalBeforeUpdate: null,
        evalSuccess: null,
        evalError: null,
        evalComplete: null,
        ajaxGlobal: false
    }

    /*
     * Internal function, build a string of partials and their update elements.
     */
    Request.prototype.extractPartials = function(update) {
        var result = []

        for (var partial in update)
            result.push(partial)

        return result.join('&')
    }

    // REQUEST PLUGIN DEFINITION
    // ============================

    var old = $.fn.request

    $.fn.request = function(handler, option) {
        var args = arguments

        var $this = $(this).first()
        var data  = {
            evalBeforeUpdate: $this.data('request-before-update'),
            evalSuccess: $this.data('request-success'),
            evalError: $this.data('request-error'),
            evalComplete: $this.data('request-complete'),
            ajaxGlobal: $this.data('request-ajax-global'),
            confirm: $this.data('request-confirm'),
            redirect: $this.data('request-redirect'),
            loading: $this.data('request-loading'),
            flash: $this.data('request-flash'),
            files: $this.data('request-files'),
            form: $this.data('request-form'),
            url: $this.data('request-url'),
            update: paramToObj('data-request-update', $this.data('request-update')),
            data: paramToObj('data-request-data', $this.data('request-data'))
        }
        if (!handler) handler = $this.data('request')
        var options = $.extend(true, {}, Request.DEFAULTS, data, typeof option == 'object' && option)
        return new Request($this, handler, options)
    }

    $.fn.request.Constructor = Request

    $.request = function(handler, option) {
        return $(document).request(handler, option)
    }

    // REQUEST NO CONFLICT
    // =================

    $.fn.request.noConflict = function() {
        $.fn.request = old
        return this
    }

    // REQUEST DATA-API
    // ==============

    function paramToObj(name, value) {
        if (value === undefined) value = ''
        if (typeof value == 'object') return value

        try {
            return $.oc.JSON("{" + value + "}")
        }
        catch (e) {
            throw new Error('Error parsing the '+name+' attribute value. '+e)
        }
    }

    $(document).on('change', 'select[data-request], input[type=radio][data-request], input[type=checkbox][data-request], input[type=file][data-request]', function documentOnChange() {
        $(this).request()
    })

    $(document).on('click', 'a[data-request], button[data-request], input[type=button][data-request], input[type=submit][data-request]', function documentOnClick(e) {
        e.preventDefault()

        $(this).request()

        if ($(this).is('[type=submit]'))
            return false
    })

    $(document).on('keydown', 'input[type=text][data-request], input[type=submit][data-request], input[type=password][data-request]', function documentOnKeydown(e) {
        if (e.key === 'Enter') {
            if (this.dataTrackInputTimer !== undefined)
                window.clearTimeout(this.dataTrackInputTimer)

            $(this).request()
            return false
        }
    })

    $(document).on('input', 'input[data-request][data-track-input]', function documentOnKeyup(e) {
        var
            $el = $(this),
            lastValue = $el.data('oc.lastvalue')

        if (!$el.is('[type=email],[type=number],[type=password],[type=search],[type=text]'))
            return

        if (lastValue !== undefined && lastValue == this.value)
            return

        $el.data('oc.lastvalue', this.value)

        if (this.dataTrackInputTimer !== undefined)
            window.clearTimeout(this.dataTrackInputTimer)

        var interval = $(this).data('track-input')
        if (!interval)
            interval = 300

        var self = this
        this.dataTrackInputTimer = window.setTimeout(function() {
            if (self.lastDataTrackInputRequest) {
                self.lastDataTrackInputRequest.abort();
            }
            self.lastDataTrackInputRequest = $(self).request();
        }, interval)
    })

    $(document).on('submit', '[data-request]', function documentOnSubmit() {
        $(this).request()
        return false
    })

    $(window).on('beforeunload', function documentOnBeforeUnload() {
        window.ocUnloading = true
    })

    /*
     * Invent our own event that unifies document.ready with window.ajaxUpdateComplete
     *
     * $(document).render(function() { })
     * $(document).on('render', function() { })
     */

    $(document).ready(function triggerRenderOnReady() {
        $(document).trigger('render')
    })

    $(window).on('ajaxUpdateComplete', function triggerRenderOnAjaxUpdateComplete() {
        $(document).trigger('render')
    })

    $.fn.render = function(callback) {
        $(document).on('render', callback)
    }

}(window.jQuery);