define([
    'jquery',
    'json.sortify',
    '/common/cryptpad-common.js',
    '/bower_components/nthen/index.js',
    '/common/sframe-common.js',
    '/slide/slide.js',
    '/common/sframe-app-framework.js',
    '/common/common-util.js',
    '/common/common-interface.js',
    'cm/lib/codemirror',

    'css!/bower_components/bootstrap/dist/css/bootstrap.min.css',
    'less!/bower_components/components-font-awesome/css/font-awesome.min.css',
    'less!/customize/src/less2/main.less',

    'css!cm/lib/codemirror.css',
    'css!cm/addon/dialog/dialog.css',
    'css!cm/addon/fold/foldgutter.css',

    'cm/mode/markdown/markdown',
    'cm/addon/mode/loadmode',
    'cm/mode/meta',
    'cm/addon/mode/overlay',
    'cm/addon/mode/multiplex',
    'cm/addon/mode/simple',
    'cm/addon/edit/closebrackets',
    'cm/addon/edit/matchbrackets',
    'cm/addon/edit/trailingspace',
    'cm/addon/selection/active-line',
    'cm/addon/search/search',
    'cm/addon/search/match-highlighter',
    'cm/addon/search/searchcursor',
    'cm/addon/dialog/dialog',
    'cm/addon/fold/foldcode',
    'cm/addon/fold/foldgutter',
    'cm/addon/fold/brace-fold',
    'cm/addon/fold/xml-fold',
    'cm/addon/fold/markdown-fold',
    'cm/addon/fold/comment-fold',
    'cm/addon/display/placeholder',

], function (
    $,
    JSONSortify,
    Cryptpad,
    nThen,
    SFCommon,
    Slide,
    Framework,
    Util,
    UI,
    CMeditor)
{
    window.CodeMirror = CMeditor;
    var Messages = Cryptpad.Messages;

    var SLIDE_BACKCOLOR_ID = "cp-app-slide-toolbar-backcolor";
    var SLIDE_COLOR_ID = "cp-app-slide-toolbar-color";

    var mkLess = function (less) { 
        return (
            '#cp-app-slide-print .cp-app-slide-frame, ' +
            '#cp-app-slide-modal #cp-app-slide-modal-content .cp-app-slide-frame {\r\n' +
                less +
            '\r\n}'
        );
    };

    var mkSlidePreviewPane = function (framework, $contentContainer) {
        var $previewButton = framework._.sfCommon.createButton(null, true);
        $previewButton.removeClass('fa-question').addClass('fa-eye');
        $previewButton.attr('title', Messages.previewButtonTitle);
        $previewButton.click(function () {
            var $c = $contentContainer;
            if ($c.hasClass('cp-app-slide-preview')) {
                framework._.sfCommon.setPadAttribute('previewMode', false, function (e) {
                    if (e) { return console.log(e); }
                });
                $previewButton.removeClass('cp-toolbar-button-active');
                return void $c.removeClass('cp-app-slide-preview');
            }
            framework._.sfCommon.setPadAttribute('previewMode', true, function (e) {
                if (e) { return console.log(e); }
            });
            $c.addClass('cp-app-slide-preview');
            $previewButton.addClass('cp-toolbar-button-active');
            Slide.updateFontSize();
        });
        framework._.toolbar.$rightside.append($previewButton);

        framework._.sfCommon.getPadAttribute('previewMode', function (e, data) {
            if (e) { return void console.error(e); }
            if (data !== false && $previewButton) {
                $previewButton.click();
            }
        });
    };

    var mkPrintButton = function (framework, editor, $content, $print, $toolbarDrawer) {
        var $printButton = $('<button>', {
            title: Messages.printButtonTitle,
            'class': 'cp-toolbar-rightside-button fa fa-print',
            style: 'font-size: 17px'
        }).click(function () {
            Slide.update(editor.getValue(), true);
            $print.html($content.html());
            // TODO use translation key
            UI.confirm("Are you sure you want to print?", function (yes) {
                if (yes) {
                    window.focus();
                    window.print();
                }
            }, {ok: Messages.printButton});
            framework.feedback('PRINT_SLIDES');
        }).append($('<span>', {'class': 'cp-toolbar-drawer-element'}).text(Messages.printText));
        $toolbarDrawer.append($printButton);
    };

    var mkSlideOptionsButton = function (framework, slideOptions, $toolbarDrawer) {
        var metadataMgr = framework._.cpNfInner.metadataMgr;
        var updateSlideOptions = function (newOpt) {
            if (JSONSortify(newOpt) !== JSONSortify(slideOptions)) {
                $.extend(slideOptions, newOpt);
                // TODO: manage realtime + cursor in the "options" modal ??
                Slide.updateOptions();
            }
        };
        var updateLocalOptions = function (newOpt) {
            updateSlideOptions(newOpt);
            var metadata = JSON.parse(JSON.stringify(metadataMgr.getMetadata()));
            metadata.slideOptions = slideOptions;
            metadataMgr.updateMetadata(metadata);
            framework.localChange();
        };
        var createPrintDialog = function (invalidStyle) {
            var slideOptionsTmp = {
                title: false,
                slide: false,
                date: false,
                transition: true,
                style: '',
                styleLess: ''
            };

            $.extend(slideOptionsTmp, slideOptions);
            var $container = $('<div class="alertify">');
            var $container2 = $('<div class="dialog">').appendTo($container);
            var $div = $('<div id="printOptions">').appendTo($container2);
            var $p = $('<p>', {'class': 'msg'}).appendTo($div);
            $('<b>').text(Messages.printOptions).appendTo($p);
            $p.append($('<br>'));
            // Slide number
            $('<input>', {
                type: 'checkbox',
                id: 'cp-app-slide-options-number',
                checked: slideOptionsTmp.slide
            }).on('change', function () {
                var c = this.checked;
                slideOptionsTmp.slide = c;
            }).appendTo($p).css('width', 'auto');
            $('<label>', {'for': 'cp-app-slide-options-number'}).text(Messages.printSlideNumber)
                .appendTo($p);
            $p.append($('<br>'));
            // Date
            $('<input>', {
                type: 'checkbox',
                id: 'cp-app-slide-options-date',
                checked: slideOptionsTmp.date
            }).on('change', function () {
                var c = this.checked;
                slideOptionsTmp.date = c;
            }).appendTo($p).css('width', 'auto');
            $('<label>', {'for': 'cp-app-slide-options-date'}).text(Messages.printDate)
                .appendTo($p);
            $p.append($('<br>'));
            // Title
            $('<input>', {
                type: 'checkbox',
                id: 'cp-app-slide-options-title',
                checked: slideOptionsTmp.title
            }).on('change', function () {
                var c = this.checked;
                slideOptionsTmp.title = c;
            }).appendTo($p).css('width', 'auto');
            $('<label>', {'for': 'cp-app-slide-options-title'}).text(Messages.printTitle)
                .appendTo($p);
            $p.append($('<br>'));
            // Transition
            $('<input>', {
                type: 'checkbox',
                id: 'cp-app-slide-options-transition',
                checked: slideOptionsTmp.transition
            }).on('change', function () {
                var c = this.checked;
                slideOptionsTmp.transition = c;
            }).appendTo($p).css('width', 'auto');
            $('<label>', {'for': 'cp-app-slide-options-transition'}).text(Messages.printTransition)
                .appendTo($p);
            $p.append($('<br>'));
            // CSS
            $('<label>', {'for': 'cp-app-slide-options-css'}).text(Messages.printCSS).appendTo($p);
            $p.append($('<br>'));
            var $textarea = $('<textarea>', {'id':'cp-app-slide-options-css'})
                .css({'width':'100%', 'height':'100px'}).appendTo($p)
                .on('keydown keyup', function (e) {
                    e.stopPropagation();
                });
            $textarea.val(invalidStyle || slideOptionsTmp.styleLess || slideOptionsTmp.style);
            window.setTimeout(function () { $textarea.focus(); }, 0);

            require(['/bower_components/less/dist/less.min.js'], function () { });
            var parseLess = function (less, cb) {
                require(['/bower_components/less/dist/less.min.js'], function (Less) {
                    Less.render(less, {}, function(err, css) {
                        if (err) { return void cb(err); }
                        cb(undefined, css.css);
                    }, window.less);
                });
            };

            var h;
            var todo = function () {
                if ($textarea.val() !== slideOptionsTmp.styleLess) {
                    var less = slideOptionsTmp.styleLess = $textarea.val();
                    slideOptionsTmp.style = '';
                    parseLess(mkLess(less), function (err, css) {
                        if (err) {
                            UI.alert(
                                '<strong>' + Messages.slide_invalidLess + '</strong>' +
                                '<br>' +
                                '<pre class="cp-slide-css-error">' + Util.fixHTML(
                                    'Line: ' + (err.line - 1) + '\n' +
                                    err.extract[err.line - 1] + '\n' +
                                    new Array(err.column+1).join(' ') +
                                    '^--- ' + err.message
                                ) + '</pre>'
                                /*Messages.slide_badLess*/, function () {
                                $('body').append(createPrintDialog(less));
                            }, true);
                        } else {
                            slideOptionsTmp.style = css;
                            updateLocalOptions(slideOptionsTmp);
                        }
                    });
                } else {
                    updateLocalOptions(slideOptionsTmp);
                }
                $container.remove();
                UI.stopListening(h);
            };
            var todoCancel = function () {
                $container.remove();
                UI.stopListening(h);
            };

            h = UI.listenForKeys(todo, todoCancel);

            var $nav = $('<nav>').appendTo($div);
            $('<button>', {'class': 'cancel'}).text(Messages.cancelButton).appendTo($nav).click(todoCancel);
            $('<button>', {'class': 'ok'}).text(Messages.settings_save).appendTo($nav).click(todo);

            return $container;
        };

        var $slideOptions = $('<button>', {
            title: Messages.slideOptionsTitle,
            'class': 'cp-toolbar-rightside-button fa fa-cog cp-hidden-if-readonly',
            style: 'font-size: 17px'
        }).click(function () {
            $('body').append(createPrintDialog());
        }).append($('<span>', {'class': 'cp-toolbar-drawer-element'}).text(Messages.slideOptionsText));
        $toolbarDrawer.append($slideOptions);

        metadataMgr.onChange(function () {
            var md = metadataMgr.getMetadata();
            if (md.slideOptions) {
                updateLocalOptions(md.slideOptions);
            }
        });
    };

    var mkColorConfiguration = function (framework, $modal) {
        var textColor;
        var backColor;
        var metadataMgr = framework._.cpNfInner.metadataMgr;

        var updateColors = function (text, back) {
            if (text) {
                textColor = text;
                $modal.css('color', text);
                $modal.css('border-color', text);
                $('#' + SLIDE_COLOR_ID).css('color', text);
            }
            if (back) {
                backColor = back;
                $modal.css('background-color', back);
                $('#' + SLIDE_BACKCOLOR_ID).css('color', back);
            }
        };
        var updateLocalColors = function (text, back) {
            updateColors(text, back);
            var metadata = JSON.parse(JSON.stringify(metadataMgr.getMetadata()));
            if (backColor) { metadata.backColor = backColor; }
            if (textColor) { metadata.color = textColor; }
            metadataMgr.updateMetadata(metadata);
            framework.localChange();
        };

        var $back = $('<button>', {
            id: SLIDE_BACKCOLOR_ID,
            'class': 'fa fa-square cp-toolbar-rightside-button cp-hidden-if-readonly',
            'style': 'font-family: FontAwesome; color: #000;',
            title: Messages.backgroundButtonTitle
        });
        var $text = $('<button>', {
            id: SLIDE_COLOR_ID,
            'class': 'fa fa-i-cursor cp-toolbar-rightside-button cp-hidden-if-readonly',
            'style': 'font-family: FontAwesome; font-weight: bold; color: #fff;',
            title: Messages.colorButtonTitle
        });
        var $testColor = $('<input>', { type: 'color', value: '!' });
        var $check = $("#cp-app-slide-colorpicker");
        if ($testColor.attr('type') !== "color" || $testColor.val() === '!') { return; }

        var $backgroundPicker = $('<input>', { type: 'color', value: backColor })
            .css({ display: 'none', })
            .on('change', function() { updateLocalColors(undefined, this.value); });
        $check.append($backgroundPicker);
        $back.on('click', function() {
            $backgroundPicker.val(backColor);
            $backgroundPicker.click();
        });

        var $foregroundPicker = $('<input>', { type: 'color', value: textColor })
            .css({ display: 'none', })
            .on('change', function() { updateLocalColors(this.value, undefined); });
        $check.append($foregroundPicker);
        $text.on('click', function() {
            $foregroundPicker.val(textColor);
            $foregroundPicker.click();
        });

        framework._.toolbar.$rightside.append($back).append($text);

        metadataMgr.onChange(function () {
            var md = metadataMgr.getMetadata();
            if (md.color || md.backColor) {
                updateLocalColors(md.color, md.backColor);
            }
        });
    };

    var mkFilePicker = function (framework, editor) {
        framework.setMediaTagEmbedder(function (mt) {
            editor.replaceSelection($(mt)[0].outerHTML);
        });
    };

    var activateLinks = function ($content) {
        $content.click(function (e) {
            if (!e.target) { return; }
            var $t = $(e.target);
            if ($t.is('a') || $t.parents('a').length) {
                e.preventDefault();
                var $a = $t.is('a') ? $t : $t.parents('a').first();
                var href = $a.attr('href');
                window.open(href);
            }
        });
    };

    /////////////////////////////////////////////////////////////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////////////////////////////////


    var andThen2 = function (editor, CodeMirror, framework, isPresentMode) {

        var common = framework._.sfCommon;

        var $contentContainer = $('#cp-app-slide-editor');
        var $modal = $('#cp-app-slide-modal');
        var $content = $('#cp-app-slide-modal-content');
        var $print = $('#cp-app-slide-print');
        var slideOptions = {};

        var $toolbarDrawer = framework._.toolbar.$drawer;

        activateLinks($content);
        Slide.setModal(framework._.sfCommon, $modal, $content, slideOptions, Messages.slideInitialState);
        mkPrintButton(framework, editor, $content, $print, $toolbarDrawer);
        mkSlideOptionsButton(framework, slideOptions, $toolbarDrawer);
        mkColorConfiguration(framework, $modal);
        mkFilePicker(framework, editor);
        mkSlidePreviewPane(framework, $contentContainer);

        CodeMirror.configureTheme();

        framework.onContentUpdate(function (newContent) {
            CodeMirror.contentUpdate(newContent);
            Slide.update(newContent.content);
        });

        framework.setContentGetter(function () {
            var content = CodeMirror.getContent();
            Slide.update(content.content);
            return content;
        });

        framework.onEditableChange(function () {
            editor.setOption('readOnly', framework.isLocked() || framework.isReadOnly());
        });

        framework.setTitleRecommender(function () {
            console.log('titleRecommender');
            return CodeMirror.getHeadingText();
        });

        framework.onReady(function (/*newPad*/) {
            CodeMirror.setMode('markdown', function () { });
            Slide.onChange(function (o, n, l) {
                var slideNumber = '';
                if (n !== null) {
                    if (Slide.shown) {
                        slideNumber = ' (' + (++n) + '/' + l + ')';
                    }
                }
                framework._.sfCommon.setTabTitle('{title}' + slideNumber);
            });
            Slide.update(editor.getValue());

            var fmConfig = {
                dropArea: $('.CodeMirror'),
                body: $('body'),
                onUploaded: function (ev, data) {
                    //var cursor = editor.getCursor();
                    //var cleanName = data.name.replace(/[\[\]]/g, '');
                    //var text = '!['+cleanName+']('+data.url+')';
                    var parsed = Cryptpad.parsePadUrl(data.url);
                    var hexFileName = Cryptpad.base64ToHex(parsed.hashData.channel);
                    var src = '/blob/' + hexFileName.slice(0,2) + '/' + hexFileName;
                    var mt = '<media-tag src="' + src + '" data-crypto-key="cryptpad:' + parsed.hashData.key + '"></media-tag>';
                    editor.replaceSelection(mt);
                }
            };
            common.createFileManager(fmConfig);
        });

        framework.onDefaultContentNeeded(function () {
            CodeMirror.contentUpdate({ content: Messages.slideInitialState });
        });

        Slide.setTitle(framework._.title);

        var enterPresentationMode = function () { Slide.show(true, editor.getValue()); };
        framework._.toolbar.$rightside.append(
            framework._.sfCommon.createButton('present', true).click(enterPresentationMode)
        );
        if (isPresentMode) { enterPresentationMode(); }

        editor.on('change', framework.localChange);

        framework.setFileExporter(CodeMirror.getContentExtension, CodeMirror.fileExporter);
        framework.setFileImporter({}, CodeMirror.fileImporter);

        framework.start();
    };

    var getThumbnailContainer = function () {
        var $codeMirror = $('.CodeMirror');
        var $c = $('#cp-app-slide-editor');
        if ($c.hasClass('cp-app-slide-preview')) {
            return $('.cp-app-slide-frame').first()[0];
        }
        if ($codeMirror.length) {
            return $codeMirror[0];
        }
    };

    var main = function () {
        var CodeMirror;
        var editor;
        var common;
        var framework;

        nThen(function (waitFor) {
            Framework.create({
                toolbarContainer: '#cme_toolbox',
                contentContainer: '#cp-app-slide-editor',
                thumbnail: {
                    getContainer: getThumbnailContainer,
                    filter: function (el, before) {
                        var metadataMgr = framework._.cpNfInner.metadataMgr;
                        var metadata = metadataMgr.getMetadata();
                        if (before) {
                            $(el).css('background-color', metadata.backColor || '#000');
                            return;
                        }
                        $(el).css('background-color', '');
                    }
                }
            }, waitFor(function (fw) { framework = fw; }));

            nThen(function (waitFor) {
                $(waitFor());
                // TODO(cjd): This is crap but we cannot bring up codemirror until after
                //            the CryptPad Common is up and we can't bring up framework
                //            without codemirror.
                SFCommon.create(waitFor(function (c) { common = c; }));
            }).nThen(function () {
                CodeMirror = common.initCodeMirrorApp(null, CMeditor);
                $('.CodeMirror').addClass('fullPage');
                editor = CodeMirror.editor;
            }).nThen(waitFor());

        }).nThen(function (waitFor) {
            common.getSframeChannel().onReady(waitFor());
        }).nThen(function (/*waitFor*/) {
            common.isPresentUrl(function (err, val) {
                andThen2(editor, CodeMirror, framework, val);
            });
        });
    };
    main();
});