var CloudCmd, Util, DOM, CloudFunc, MenuIO, Format;

(function(CloudCmd, Util, DOM) {
    'use strict';
    
    CloudCmd.Edit = EditProto;
    
    function EditProto(callback) {
        var Name        = 'Edit',
            Loading     = true,
            
            Info        = DOM.CurrentInfo,
            Dialog      = DOM.Dialog,
            
            exec        = Util.exec,
            Edit        = this,
            
            Menu,
            
            EditorName  = 'edward',
            editor,
            
            TITLE       = 'Edit',
            
            Images      = DOM.Images,
            MSG_CHANGED,
            Element,
            ConfigView  = {
                beforeClose: function() {
                    exec.ifExist(Menu, 'hide');
                    isChanged(Edit.hide);
                },
                afterShow: function() {
                    editor
                        .moveCursorTo(0, 0)
                        .focus();
                }
            };
        
        function init(callback) {
            var element = createElement();
            
            DOM.Events.addOnce('contextmenu', element, setMenu);
            
            exec.series([
                CloudCmd.View,
                getConfig,
                function(callback) {
                    loadFiles(element, callback);
                },
                function(callback) {
                    authCheck(editor);
                    callback();
                },
                function(callback) {
                    Edit.create(element)
                        .show(callback);
                },
                callback
            ]);
        }
        
        function createElement() {
            var element = DOM.load({
                name: 'div',
                style:
                    'width      : 100%;'                +
                    'height     : 100%;'                +
                    'font-family: "Droid Sans Mono";'   +
                    'position   : absolute;',
                notAppend: true
            });
            
            return element;
        }
        
        this.show = function(callback) {
            if (Loading)
                return;
            
            Images.show.load();
            
            if (callback)
                ConfigView.beforeShow = callback;
            
            Info.getData(function(error, data) {
                var path = Info.path;
                var isDir = Info.isDir;
                var name = Info.name;
                
                if (isDir)
                    name += '.json';
                
                if (error)
                    return Images.hide();
                
                Edit.setValue(data, {
                    name: name,
                    path: path
                });
                
                CloudCmd.View.show(Element, ConfigView);
            });
        };
        
        this.setValue = function(value, info) {
            var path = info.path;
            var name = info.name;
            
            editor
                .setValueFirst(path, value)
                .setModeForPath(name)
                .setOption('fontSize', 16);
            
            setMsgChanged(name);
        };
        
        this.hide = function() {
            CloudCmd.View.hide();
        };
        
        this.create = function(element) {
            Element = element;
            
            editor.on('save', function(value) {
                var size = Format.size(value);
                DOM.setCurrentSize(size);
            });
            
            return this;
        };
        
        function authCheck(spawn) {
            DOM.Files.get('config', function(error, config) {
                if (error)
                    return Dialog.alert(TITLE, error);
                
                if (!config.auth)
                    return;
                
                spawn.emit('auth', config.username, config.password);
                spawn.on('reject', function() {
                    Dialog.alert(TITLE, 'Wrong credentials!');
                });
            });
        }
        
        function getConfig(callback) {
            DOM.Files.get('config', function(error, config) {
                if (error)
                    Dialog.alert(TITLE, error);
                else if (config.editor)
                    EditorName = config.editor;
                
                callback();
            });
        }
        
        function loadFiles(element, callback) {
            var prefix = CloudCmd.PREFIX;
            var prefixName = prefix + '/' + EditorName;
            var url = prefixName + '/' + EditorName + '.js';
            
            Util.time(Name + ' load');
            
            DOM.load.js(url, function() {
                var word = window[EditorName];
                var options = {
                    maxSize     : CloudFunc.MAX_FILE_SIZE,
                    prefix      : prefixName,
                    socketPath  : prefix
                };
                
                word(element, options, function(ed) {
                    Util.timeEnd(Name + ' load');
                    editor  = ed;
                    Loading = false;
                    
                    exec(callback);
                });
            });
        }
        
        function setMenu(event) {
            var position = {
                x: event.clientX,
                y: event.clientY
            };
            
            event.preventDefault();
            
            !Menu && DOM.loadRemote('menu', function(error) {
                var noFocus;
                var options = {
                    beforeShow: function(params) {
                        params.x -= 18;
                        params.y -= 27;
                    },
                    
                    afterClick: function() {
                        !noFocus && editor.focus();
                    }
                };
                var menuData = {
                    'Save           Ctrl+S' : function() {
                        editor.save();
                    },
                    'Go To Line     Ctrl+G' : function() {
                        noFocus = true;
                        editor.goToLine();
                    },
                    'Cut            Ctrl+X' : function() {
                        editor.cutToClipboard();
                    },
                    'Copy           Ctrl+C' : function() {
                        editor.copyToClipboard();
                    },
                    'Paste          Ctrl+V' : function() {
                        editor.pasteFromClipboard();
                    },
                    'Delete         Del'    : function() {
                        editor.remove('right');
                    },
                    'Select All     Ctrl+A' : function() {
                        editor.selectAll();
                    },
                    'Beautify       Ctrl+B' : function() {
                        editor.beautify();
                    },
                    'Minify         Ctrl+M' : function() {
                        editor.minify();
                    },
                    'Close          Esc'    : function() {
                        Edit.hide();
                    }
                };
                
                if (error)
                    return Dialog.alert(TITLE, error);
                
                if (Menu || !MenuIO)
                    return;
                    
                Menu = new MenuIO(Element, options, menuData);
                Menu.show(position.x, position.y);
            });
        }
        
        function setMsgChanged(name) {
            MSG_CHANGED = 'Do you want to save changes to ' + name + '?';
        }
        
        function isChanged() {
            var is = editor.isChanged();
            
            is && Dialog.confirm(TITLE, MSG_CHANGED, {cancel: false})
                .then(function() {
                    editor.save();
                });
        }
        
        init(callback);
    }
    
})(CloudCmd, Util, DOM, CloudFunc);