window.jQuery(function ($) {

    const APP = window.metaslider.app ? window.metaslider.app.MetaSlider : null
    /**
     * Event listening to media library edits
     */
    var media_library_events = {
        loaded: false,
        /**
         * Attaches listenTo event to the library collection
         *
         * @param modal object wp.media modal
         */
        attach_event: function (modal) {
            var library = modal.state().get('library')
            modal.listenTo(library, 'change', function (model) {
                media_library_events.update_slide_metadata({
                    id: model.get('id'),
                    caption: model.get('caption'),
                    description: model.get('description'),
                    title: model.get('title'),
                    alt: model.get('alt')
                })
            })
        },

        /**
         * Updates slide caption and other metadata when a media is edited in a modal
         *
         * @param object metadata
         */
        update_slide_metadata: function (metadata) {
            var $slides = $('.slide').filter(function (i) {
                return $(this).data('attachment-id') === metadata.id
            })

            var slideIds = $slides.map(function () {
                return this.id.replace('slide-', '')
            })

            // To be picked up by vue components
            $(document).trigger('metaslider/image-meta-updated', [slideIds.toArray(), metadata])

            metadata.title ? $('.title .default', $slides).html(metadata.title) : $('.title .default', $slides).html('&nbsp;')
            metadata.alt ? $('.alt .default', $slides).html(metadata.alt) : $('.alt .default', $slides).html('&nbsp;')
        }
    }

    /**
     * UI for adding a slide. Managed through the WP media upload UI
     * Event managed here.
     */
    var create_slides = window.create_slides = wp.media.frames.file_frame = wp.media({
        multiple: 'add',
        frame: 'post',
        library: {type: 'image'},
    });

    // Remove unwanted image views
    var whiteList = ['insert', 'iframe'];
    var unwanted_media_menu_items = create_slides.states.models.filter(function (view) {
        var title = view.id;

        // Filter through the list and determine which elements to remove
        return !whiteList.filter(function (term) {
            return title.includes(term)
        }).length;
    })
    create_slides.states.remove(unwanted_media_menu_items);

    create_slides.on('insert', function () {

        var slide_ids = [];
        create_slides.state().get('selection').map(function (media) {
            slide_ids.push(media.toJSON().id);
        });

        if (APP) {
            const message = slide_ids.length == 1 ? APP.__('Preparing 1 slide...', 'ml-slider') : APP.__('Preparing %s slides...')
            APP.notifyInfo(
                'metaslider/creating-slides',
                APP.sprintf(message, slide_ids.length),
                true
            )
        }

        // Remove the events for image APIs
        remove_image_apis()

        var data = {
            action: 'create_image_slide',
            slider_id: window.parent.metaslider_slider_id,
            selection: slide_ids,
            _wpnonce: metaslider.create_slide_nonce
        };

        // TODO: Create micro feedback to the user.
        // TODO: Adding lots of slides locks up the page due to 'resizeSlides' event
        $.ajax({
            url: metaslider.ajaxurl,
            data: data,
            type: 'POST',
            error: function (error) {
                APP && APP.notifyError('metaslider/slide-create-failed', error, true)
            },
            success: function (response) {

                // Mount and render each new slide
                response.data.forEach(function (slide) {
                    // TODO: Eventually move the creation to the slideshow or slide vue component
                    // TODO: Be careful about the handling of filters (ex. scheduling)
                    var res = window.metaslider.app.Vue.compile(slide['html'])

                    // Mount the slide to the end of the list
                    $('#metaslider-slides-list > tbody').append(
                        (new window.metaslider.app.Vue({
                            render: res.render,
                            staticRenderFns: res.staticRenderFns
                        }).$mount()).$el
                    )
                })

                // Add timeouts to give some breating room to the notice animations
                setTimeout(function () {
                    if (APP) {
                        const message = slide_ids.length == 1 ? APP.__('1 slide added successfully', 'ml-slider') : APP.__('%s slides added successfully')
                        APP.notifySuccess(
                            'metaslider/slides-created',
                            APP.sprintf(message, slide_ids.length),
                            true
                        )
                    }
                    setTimeout(function () {
                        APP && APP.triggerEvent('metaslider/save')
                    }, 1000);
                }, 1000);

            }
        })
    })

    /**
     * Starts to watch the media library for changes
     */
    create_slides.on('attach', function () {
        if (!media_library_events.loaded) {
            media_library_events.attach_event(create_slides)
        }
    })

    /**
     * Fire events when the modal is opened
     * Available events: create_slides.on('all', function (e) { console.log(e) })
     */
    // This is also a little "hack-ish" but necessary since we are accessing the UI indirectly
    create_slides.on('open activate uploader:ready', function () {
        // TODO: when converted to vue component make this work for other languages
        $('.media-menu a:contains("Media Library")').remove()
        add_image_apis()

        // Remove unwanted side menu items
        unwanted_media_menu_items.forEach(function (item) {
            $('#menu-item-' + item.id).remove();
        })
    })
    APP && create_slides.on('open', function () {
        APP.notifyInfo('metaslider/add-slide-opening-ui', APP.__('Opening add slide UI...', 'ml-slider'))
    })
    APP && create_slides.on('deactivate close', function () {
        APP.notifyInfo('metaslider/add-slide-closing-ui', APP.__('Closing add slide UI...', 'ml-slider'))
        remove_image_apis()
    })

    /**
     * Handles changing alt and title on SEO tab
     * TODO: refactor to remove this
     */
    $('.metaslider').on('change', '.js-inherit-from-image', function (e) {
        var $this = $(this)
        var $parent = $this.parents('.can-inherit')
        var input = $parent.children('textarea,input[type=text]')
        var default_item = $parent.children('.default')
        if ($this.is(':checked')) {
            $parent.addClass('inherit-from-image')
        } else {
            $parent.removeClass('inherit-from-image')
            input.focus()
            if ('' === input.val()) {
                if (0 === default_item.find('.no-content').length) {
                    input.val(default_item.html())
                }
            }
        }
    })

    /**
     * For changing slide image. Managed through the WP media upload UI
     * Initialized dynamically due to multiple slides.
     */
    var update_slide_frame;

    /**
     * Handles changing an image when edited by the user.
     */
    $('.metaslider').on('click', '.update-image', function (event) {
        event.preventDefault();
        var $this = $(this);
        var current_id = $this.data('attachment-id');

        /**
         * Opens up a media window showing images
         */
        update_slide_frame = window.update_slide_frame = wp.media.frames.file_frame = wp.media({
            title: MetaSlider_Helpers.capitalize(metaslider.update_image),
            library: {type: 'image'},
            button: {
                text: MetaSlider_Helpers.capitalize($this.attr('data-button-text'))
            }
        });

        /**
         * Selects current image
         */
        update_slide_frame.on('open', function () {
            if (current_id) {
                var selection = update_slide_frame.state().get('selection');
                selection.reset([wp.media.attachment(current_id)]);

                // Add various image APIs
                add_image_apis($this.data('slideType'), $this.data('slideId'))
            }
        });

        /**
         * Starts to watch the media library for changes
         */
        update_slide_frame.on('attach', function () {
            if (!media_library_events.loaded) {
                media_library_events.attach_event(update_slide_frame);
            }
        });

        /**
         * Open media modal
         */
        update_slide_frame.open();

        /**
         * Handles changing an image in DB and UI
         */
        update_slide_frame.on('select', function () {
            var selection = update_slide_frame.state().get('selection');
            selection.map(function (attachment) {
                attachment = attachment.toJSON();
                new_image_id = attachment.id;
                selected_item = attachment;
            });

            APP && APP.notifyInfo('metaslider/updating-slide', APP.__('Updating slide...', 'ml-slider'), true)

            // Remove the events for image APIs
            remove_image_apis()

            /**
             * Updates the meta information on the slide
             */
            var data = {
                action: 'update_slide_image',
                _wpnonce: metaslider.update_slide_image_nonce,
                slide_id: $this.data('slideId'),
                slider_id: window.parent.metaslider_slider_id,
                image_id: new_image_id
            };

            $.ajax({
                url: metaslider.ajaxurl,
                data: data,
                type: 'POST',
                error: function (error) {
                    APP && APP.notifyError('metaslider/slide-update-failed', error, true)
                },
                success: function (response) {
                    /**
                     * Updates the image on success
                     */
                    $('#slide-' + $this.data('slideId') + ' .thumb')
                        .css('background-image', 'url(' + response.data.thumbnail_url + ')');
                    // set new attachment ID
                    var $edited_slide_elms = $('#slide-' + $this.data('slideId') + ', #slide-' + $this.data('slideId') + ' .update-image');
                    $edited_slide_elms.data('attachment-id', selected_item.id);

                    if (response.data.thumbnail_url) {
                        $('#slide-' + $this.data('slideId')).trigger('metaslider/attachment/updated', response.data);
                    }

                    // Update metadata to new image
                    media_library_events.update_slide_metadata({
                        id: selected_item.id,
                        caption: selected_item.caption,
                        description: selected_item.description,
                        title: selected_item.title,
                        alt: selected_item.alt
                    })

                    APP && APP.notifySuccess('metaslider/slide-updated', APP.__('Slide updated successfully', 'ml-slider'), true)

                    // TODO: run a function in SlideViewer.vue to replace this
                    $(".metaslider table#metaslider-slides-list").trigger('resizeSlides');
                }
            });
        });

        update_slide_frame.on('close', function () {
            remove_image_apis()
        })
        create_slides.on('close', function () {
            remove_image_apis()
        })
    })

    /**
     * Add all the image APIs. Add events everytime the modal is open
     * TODO: refactor out hard-coded unsplash (can wait until we add a second service)
     * TODO: right now this replaces the content pane. It might take some time but look for more native integration
     * TODO: It gets a little bit buggy when someone triggers a download and clicks around. Maybe not important.
     */
    var unsplash_api_events = function (event) {
        event.preventDefault()

        // Some things shouldn't happen when we're about to reload
        if (window.metaslider.about_to_reload) {
            return
        }

        // Set this tab as active
        $(this).addClass('active').siblings().removeClass('active')

        // If the image api container exists we don't want to create it again
        if ($('#image-api-container').length) {
            return
        }

        // Move the content and trigger vue to fetch the data
        // Add a container to house the content
        $(this).parents('.media-frame-router').siblings('.media-frame-content').append('<div id="image-api-container"></div>')

        // Add content to the container
        $('#image-api-container').append('<metaslider-external source="unsplash" :slideshow-id="' + window.parent.metaslider_slider_id + '" :slide-id="' + window.metaslider.slide_id + '" slide-type="' + (window.metaslider.slide_type || 'image') + '"></metaslider-external>')

        // Tell our app to render a new component
        $(window).trigger('metaslider/initialize_external_api', {
            'selector': '#image-api-container'
        })

        // Discard these
        delete window.metaslider.slide_id
        delete window.metaslider.slide_type
    }

    var add_image_apis = function (slide_type, slide_id) {

        // This is the pro layer screen (not currently used)
        if ($('.media-menu-item.active:contains("Layer")').length) {
            // If this is the layer slide screen and pro isnt installed, exit
            if (!window.metaslider.pro_supports_imports) {
                return
            }
        }
        window.metaslider.slide_type = 'layer'

        // If slide type is set then override the above because we're just updating an image
        if (slide_type) {
            window.metaslider.slide_type = slide_type
        }

        window.metaslider.slide_id = slide_id

        // Unsplash - First remove potentially leftover tabs in case the WP close event doesn't fire
        $('.unsplash-tab').remove()
        $('.media-frame-router .media-router').append('<a href="#" id="unsplash-tab" class="text-black hover:text-blue-dark unsplash-tab media-menu-item">Unsplash Library</a>')
        $('.toplevel_page_metaslider').on('click', '.unsplash-tab', unsplash_api_events)

        // Each API will fake the container, so if we click on a native WP container, we should delete the API container
        $('.media-frame-router .media-router .media-menu-item').on('click', function () {

            // Destroy the component (does clean up)
            $(window).trigger('metaslider/destroy_external_api')

            // Additionally set the active tab
            $(this).addClass('active').siblings().removeClass('active')
        })
    }

    /**
     * Remove tab and events for api type images. Add this when a modal closes to avoid duplicate events
     */
    var remove_image_apis = function () {

        // Some things shouldn't happen when we're about to reload
        if (window.metaslider.about_to_reload) {
            return
        }

        // Tell tell components they are about to be removed
        $(window).trigger('metaslider/destroy_external_api')

        $('.toplevel_page_metaslider').off('click', '.unsplash-tab', unsplash_api_events)
        $('.unsplash-tab').remove()

        // Since we will destroy the container each time we should add the active class to whatever is first
        $('.media-frame-router .media-router > a').first().trigger('click')
    }

    /**
     * delete a slide using ajax (avoid losing changes)
     */
    $(".metaslider").on('click', '.delete-slide', function (event) {
        event.preventDefault();
        var $this = $(this);
        var data = {
            action: 'delete_slide',
            _wpnonce: metaslider.delete_slide_nonce,
            slide_id: $this.data('slideId'),
            slider_id: window.parent.metaslider_slider_id
        };

        // Set the slider state to deleting
        $this.parents('#slide-' + $this.data('slideId'))
            .removeClass('ms-restored')
            .addClass('ms-deleting')
            .append('<div class="ms-delete-overlay"><i style="height:24px;width:24px"><svg class="ms-spin" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-loader"><line x1="12" y1="2" x2="12" y2="6"/><line x1="12" y1="18" x2="12" y2="22"/><line x1="4.93" y1="4.93" x2="7.76" y2="7.76"/><line x1="16.24" y1="16.24" x2="19.07" y2="19.07"/><line x1="2" y1="12" x2="6" y2="12"/><line x1="18" y1="12" x2="22" y2="12"/><line x1="4.93" y1="19.07" x2="7.76" y2="16.24"/><line x1="16.24" y1="7.76" x2="19.07" y2="4.93"/></svg></i></div>');
        $this.parents('#slide-' + $this.data('slideId'))
            .find('.ms-delete-status')
            .remove();

        $.ajax({
            url: metaslider.ajaxurl,
            data: data,
            type: 'POST',
            error: function (response) {

                // Delete failed. Remove delete state UI
                alert(response.responseJSON.data.message);
                $slide = $this.parents('#slide-' + $this.data('slideId'));
                $slide.removeClass('ms-deleting');
                $slide.find('.ms-delete-overlay').remove();
            },
            success: function (response) {
                var count = 10;

                // Remove deleting state and add a deleted state with restore option
                setTimeout(function () {
                    $slide = $this.parents('#slide-' + $this.data('slideId'));
                    $slide.addClass('ms-deleted')
                        .removeClass('ms-deleting')
                        .find('.metaslider-ui-controls').append(
                        '<button class="undo-delete-slide" title="' + metaslider.restore_language + '" data-slide-id="' + $this.data('slideId') + '">' + metaslider.restore_language + '</button>'
                    );

                    // Grab the image from the slide
                    var img = $slide.find('.thumb').css('background-image')
                        .replace(/^url\(["']?/, '')
                        .replace(/["']?\)$/, '');

                    // If the image is the same as the URL then it's empty (external slide type)
                    img = (window.location.href === img) ? '' : img;

                    // @codingStandardsIgnoreStart
                    // Will be refactored in the the next branch
                    // Send a notice to the user
                    // var notice = new MS_Notification(metaslider.deleted_language, metaslider.click_to_undo_language, img);

                    // Fire the notice and set callback to undo
                    // notice.fire(10000, function() {
                    //     jQuery('#slide-' + $this.data('slideId'))
                    //         .addClass('hide-status')
                    //         .find('.undo-delete-slide').trigger('click');
                    // });
                    // @codingStandardsIgnoreEnd

                    // If the trash link isn't there, add it in (without counter)
                    if ('none' == $('.restore-slide-link').css('display')) {
                        $('.restore-slide-link').css('display', 'inline');
                    }
                }, 1000);
            }
        });
    });

    /**
     * delete a slide using ajax (avoid losing changes)
     */
    $(".metaslider").on('click', '.undo-delete-slide, .trash-view-restore', function (event) {
        event.preventDefault();
        var $this = $(this);
        var data = {
            action: 'undelete_slide',
            _wpnonce: metaslider.undelete_slide_nonce,
            slide_id: $this.data('slideId'),
            slider_id: window.parent.metaslider_slider_id
        };

        // Remove undo button
        $('#slide-' + $this.data('slideId')).find('.undo-delete-slide').html('');

        // Set the slider state to deleting
        $this.parents('#slide-' + $this.data('slideId'))
            .removeClass('ms-deleted')
            .addClass('ms-deleting')
            .css('padding-top', '31px')
            .append('<div class="ms-delete-overlay"><i style="height:24px;width:24px"><svg class="ms-spin" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-loader"><line x1="12" y1="2" x2="12" y2="6"/><line x1="12" y1="18" x2="12" y2="22"/><line x1="4.93" y1="4.93" x2="7.76" y2="7.76"/><line x1="16.24" y1="16.24" x2="19.07" y2="19.07"/><line x1="2" y1="12" x2="6" y2="12"/><line x1="18" y1="12" x2="22" y2="12"/><line x1="4.93" y1="19.07" x2="7.76" y2="16.24"/><line x1="16.24" y1="7.76" x2="19.07" y2="4.93"/></svg></i></div>');
        $this.parents('#slide-' + $this.data('slideId'))
            .find('.ms-delete-status')
            .remove();
        $this.parents('#slide-' + $this.data('slideId'))
            .find('.delete-slide')
            .focus();

        $.ajax({
            url: metaslider.ajaxurl,
            data: data,
            type: 'POST',
            error: function (response) {

                // Undelete failed. Remove delete state UI
                $slide = $this.parents('#slide-' + $this.data('slideId'));
                $slide.removeClass('ms-restoring').addClass('ms-deleted');
                $slide.find('.ms-delete-overlay').remove();

                // If there was a WP error, this should be populated:
                if (response.responseJSON) {
                    alert(response.responseJSON.data.message);
                } else {
                    alert('There was an error with the server and the action could not be completed.');
                }
            },
            success: function (response) {

                // Restore to original state
                $slide = $this.parents('#slide-' + $this.data('slideId'));
                $slide.addClass('ms-restored')
                $slide.removeClass('ms-deleting')
                    .find('.undo-delete-slide, .trash-view-restore').remove();
                $slide.find('.ms-delete-overlay').remove();
                $('#slide-' + $this.data('slideId') + ' h4').after('<span class="ms-delete-status is-success">' + metaslider.restored_language + '</span>');

                // We can try to remove the buton actions too (trashed view)
                $('#slide-' + $this.data('slideId')).find('.row-actions.trash-btns').html('');

                // Grab the image from the slide
                var img = $slide.find('.thumb').css('background-image')
                    .replace(/^url\(["']?/, '')
                    .replace(/["']?\)$/, '');

                // If the image is the same as the URL then it's empty (external slide type)
                img = (window.location.href === img) ? '' : img;

                // @codingStandardsIgnoreStart
                // Will be refactored in the the next branch
                // Send a success notification
                // TODO: fire notification
                // var notice = new MS_Notification(metaslider.restored_language, '', img, 'is-success');

                // Fire the notice
                // notice.fire(5000);
                // @codingStandardsIgnoreEnd
            }
        });
    });


    // bind an event to the slides table to update the menu order of each slide
    // TODO: Remove this soon
    $(".metaslider").on('resizeSlides', 'table#metaslider-slides-list', function (event) {
        var slideshow_width = $("input.width").val();
        var slideshow_height = $("input.height").val();

        $("tr.slide input[name='resize_slide_id']", this).each(function () {
            $this = $(this);

            var thumb_width = $this.attr("data-width");
            var thumb_height = $this.attr("data-height");
            var slide_row = $(this).closest('tr');
            var crop_changed = slide_row.data('crop_changed');

            if (thumb_width != slideshow_width || thumb_height != slideshow_height || crop_changed) {
                $this.attr("data-width", slideshow_width);
                $this.attr("data-height", slideshow_height);

                var data = {
                    action: "resize_image_slide",
                    slider_id: window.parent.metaslider_slider_id,
                    slide_id: $this.attr("data-slide_id"),
                    _wpnonce: metaslider.resize_nonce
                };

                $.ajax({
                    type: "POST",
                    data: data,
                    async: false,
                    cache: false,
                    url: metaslider.ajaxurl,
                    success: function (response) {
                        if (crop_changed) {
                            slide_row.data('crop_changed', false);
                        }
                        if (response.data.thumbnail_url) {
                            $this.closest('tr.slide').trigger('metaslider/attachment/updated', response.data);
                        }
                    }
                });
            }
        });
    });

    // helptext tooltips
    $('.tipsy-tooltip').tipsy({className: 'msTipsy', live: false, delayIn: 500, html: true, gravity: 'e'})
    $('.tipsy-tooltip-top').tipsy({live: false, delayIn: 500, html: true, gravity: 's'})
    $('.tipsy-tooltip-bottom').tipsy({live: false, delayIn: 500, html: true, gravity: 'n'})
    $('.tipsy-tooltip-bottom-toolbar').tipsy({live: false, delayIn: 500, html: true, gravity: 'n', offset: 2})


});

/**
 * Various helper functions to use throughout
 */
var MetaSlider_Helpers = {

    /**
     * Various helper functions to use throughout
     *
     * @param  string string A string to capitalise
     * @return string Returns capitalised string
     */
    capitalize: function (string) {
        return string.replace(/\b\w/g, function (l) {
            return l.toUpperCase();
        });
    }
};
