var weechat = angular.module('weechat', ['localStorage']);
weechat.filter('toArray', function () {
    'use strict';

    return function (obj) {
        if (!(obj instanceof Object)) {
            return obj;
        }

        return Object.keys(obj).map(function (key) {
            return Object.defineProperty(obj[key], '$key', {__proto__: null, value: key});
        });
    }
});

weechat.factory('colors', [function($scope) {

    // http://weechat.org/files/doc/devel/weechat_dev.en.html#color_codes_in_strings
    var part, fg, bg, attrs, colors = ['', 'black', 'dark gray', 'dark red', 'light red', 'dark green', 'light green', 'brown', 'yellow', 'dark blue', 'light blue', 'dark magenta', 'light magenta', 'dark cyan', 'light cyan', 'gray', 'white'];
    // XTerm 8-bit pallete
    var colors = [
                '#000000', '#AA0000', '#00AA00', '#AA5500', '#0000AA',
                '#AA00AA', '#00AAAA', '#AAAAAA', '#555555', '#FF5555',
                '#55FF55', '#FFFF55', '#5555FF', '#FF55FF', '#55FFFF',
                '#FFFFFF', '#000000', '#00005F', '#000087', '#0000AF',
                '#0000D7', '#0000FF', '#005F00', '#005F5F', '#005F87',
                '#005FAF', '#005FD7', '#005FFF', '#008700', '#00875F',
                '#008787', '#0087AF', '#0087D7', '#00AF00', '#00AF5F',
                '#00AF87', '#00AFAF', '#00AFD7', '#00AFFF', '#00D700',
                '#00D75F', '#00D787', '#00D7AF', '#00D7D7', '#00D7FF',
                '#00FF00', '#00FF5F', '#00FF87', '#00FFAF', '#00FFD7',
                '#00FFFF', '#5F0000', '#5F005F', '#5F0087', '#5F00AF',
                '#5F00D7', '#5F00FF', '#5F5F00', '#5F5F5F', '#5F5F87',
                '#5F5FAF', '#5F5FD7', '#5F5FFF', '#5F8700', '#5F875F',
                '#5F8787', '#5F87AF', '#5F87D7', '#5F87FF', '#5FAF00',
                '#5FAF5F', '#5FAF87', '#5FAFAF', '#5FAFD7', '#5FAFFF',
                '#5FD700', '#5FD75F', '#5FD787', '#5FD7AF', '#5FD7D7',
                '#5FD7FF', '#5FFF00', '#5FFF5F', '#5FFF87', '#5FFFAF',
                '#5FFFD7', '#5FFFFF', '#870000', '#87005F', '#870087',
                '#8700AF', '#8700D7', '#8700FF', '#875F00', '#875F5F',
                '#875F87', '#875FAF', '#875FD7', '#875FFF', '#878700',
                '#87875F', '#878787', '#8787AF', '#8787D7', '#8787FF',
                '#87AF00', '#87AF5F', '#87AF87', '#87AFAF', '#87AFD7',
                '#87AFFF', '#87D700', '#87D75F', '#87D787', '#87D7AF',
                '#87D7D7', '#87D7FF', '#87FF00', '#87FF5F', '#87FF87',
                '#87FFAF', '#87FFD7', '#87FFFF', '#AF0000', '#AF005F',
                '#AF0087', '#AF00AF', '#AF00D7', '#AF00FF', '#AF5F00',
                '#AF5F5F', '#AF5F87', '#AF5FAF', '#AF5FD7', '#AF5FFF',
                '#AF8700', '#AF875F', '#AF8787', '#AF87AF', '#AF87D7',
                '#AF87FF', '#AFAF00', '#AFAF5F', '#AFAF87', '#AFAFAF',
                '#AFAFD7', '#AFAFFF', '#AFD700', '#AFD75F', '#AFD787',
                '#AFD7AF', '#AFD7D7', '#AFD7FF', '#AFFF00', '#AFFF5F',
                '#AFFF87', '#AFFFAF', '#AFFFD7', '#AFFFFF', '#D70000',
                '#D7005F', '#D70087', '#D700AF', '#D700D7', '#D700FF',
                '#D75F00', '#D75F5F', '#D75F87', '#D75FAF', '#D75FD7',
                '#D75FFF', '#D78700', '#D7875F', '#D78787', '#D787AF',
                '#D787D7', '#D787FF', '#D7AF00', '#D7AF5F', '#D7AF87',
                '#D7AFAF', '#D7AFD7', '#D7AFFF', '#D7D700', '#D7D75F',
                '#D7D787', '#D7D7AF', '#D7D7D7', '#D7D7FF', '#D7FF00',
                '#D7FF5F', '#D7FF87', '#D7FFAF', '#D7FFD7', '#D7FFFF',
                '#FF0000', '#FF005F', '#FF0087', '#FF00AF', '#FF00D7',
                '#FF00FF', '#FF5F00', '#FF5F5F', '#FF5F87', '#FF5FAF',
                '#FF5FD7', '#FF5FFF', '#FF8700', '#FF875F', '#FF8787',
                '#FF87AF', '#FF87D7', '#FF87FF', '#FFAF00', '#FFAF5F',
                '#FFAF87', '#FFAFAF', '#FFAFD7', '#FFAFFF', '#FFD700',
                '#FFD75F', '#FFD787', '#FFD7AF', '#FFD7D7', '#FFD7FF',
                '#FFFF00', '#FFFF5F', '#FFFF87', '#FFFFAF', '#FFFFD7',
                '#FFFFFF', '#080808', '#121212', '#1C1C1C', '#262626',
                '#303030', '#3A3A3A', '#444444', '#4E4E4E', '#585858',
                '#626262', '#6C6C6C', '#767676', '#808080', '#8A8A8A',
                '#949494', '#9E9E9E', '#A8A8A8', '#B2B2B2', '#BCBCBC',
                '#C6C6C6', '#D0D0D0', '#DADADA', '#E4E4E4', '#EEEEEE'
            ]
    

    function setAttrs() {
        while (part.match(/^[\*\/\_\|]/)) {
            attrs.push(part.charAt(0));
            part = part.slice(1);
        }
    }

    function getColor() {
        var c;
        if (part.match(/^@/)) {
            c = part.slice(1, 6);
            part = part.slice(6);
        } else {
            c = part.slice(0, 2);
            part = part.slice(2);
        }
        return c;
    }

    function prepareCss(color) {
        /*
         * Translates a weechat color to CSS
         */
        return 'color: ' + color;
    }

    var prefixes = {
        '\x19': function() {
            if (part.match(/^F/)) {
                part = part.slice(1);
                setAttrs();
                fg = getColor();
            } else if (part.match(/^B/)) {
                part = part.slice(1);
                setAttrs();
                bg = getColor();
            } else {
                setAttrs();
                fg = getColor();
                if (part.match(/^,/)) {
                    part = part.slice(1);
                    bg = getColor();
                }
            }
        },
        '\x1A': function() {
            // Don't know what to do
        },
        '\x1B': function() {
            attrs = [];
        },
        '\x1C': function() {
            fg = '';
            bg = '';
        }
    };

    function parse(text) {
        if (!text) {
            return text;
        }
        var f, parts = text.split(/(\x19|\x1A|\x1B|\x1C)/);
        if (parts.length === 1) return [{
            text: parts[0]
        }];
        attrs = [];

        return parts.map(function(p) {
            var res, tmp = prefixes[p.charAt(0)];
            if (f) {
                part = p;
                f();
                res = {
                    text: part,
                    fg: colors[parseInt(fg, 10)],
                    bg: colors[parseInt(bg, 10)],
                    attrs: attrs
                };
                if (!res.fg) res.fg = fg;
                if (!res.bg) res.bg = bg;
            }
            f = tmp;
            return res;
        }).filter(function(p) {
            return p;
        });
    };






    return {
        
        setAttrs: setAttrs,
        getColor: getColor,
        prepareCss: prepareCss,
        parse: parse,
        parts: ['', 'black', 'dark gray', 'dark red', 'light red', 'dark green', 'light green', 'brown', 'yellow', 'dark blue', 'light blue', 'dark magenta', 'light magenta', 'dark cyan', 'light cyan', 'gray', 'white']
    }

}]);

weechat.factory('pluginManager', ['youtubePlugin', 'urlPlugin', 'imagePlugin', function(youtubePlugin, urlPlugin, imagePlugin) {

    var plugins = [youtubePlugin, urlPlugin, imagePlugin]

    var hookPlugin = function(plugin) {
        plugins.push(plugin);
    }

    var contentForMessage = function(message) {
        
        console.log('Message: ', message);
        var content = [];
        for (var i = 0; i < plugins.length; i++) {
            var pluginContent = plugins[i].contentForMessage(message);
            if (pluginContent) {
                var pluginContent = {'visible': false, 'content': pluginContent }
                content.push(pluginContent);

                if (plugins[i].exclusive) {
                    break;
                }
            }
        }
        
        console.log('Content: ', content);
        return content;
    }

    return {
        hookPlugin: hookPlugin,
        contentForMessage: contentForMessage
    }

}]);

weechat.factory('youtubePlugin', [function() {

    var contentForMessage = function(message) {
        if (message.indexOf('youtube.com') != -1) {
            var index = message.indexOf("?v=");
            var token = message.substr(index+3);
            return '<iframe width="560" height="315" src="http://www.youtube.com/embed/' + token + '" frameborder="0" allowfullscreen></iframe>'
        }
        return null;
    }

    return {
        contentForMessage: contentForMessage,
        exclusive: true
    }

}]);

weechat.factory('urlPlugin', [function() {
    var contentForMessage = function(message) {
        var urlPattern = /(http|ftp|https):\/\/[\w-]+(\.[\w-]+)+([\w.,@?^=%&amp;:\/~+#-]*[\w@?^=%&amp;\/~+#-])?/;
        var url = message.match(urlPattern);
        if (url) {
            return '<a href="' + url[0] + '">' + message + '</a>';
        }
        return null;
    }

    return {
        contentForMessage: contentForMessage,
        exclusive: false
    }
}]);

weechat.factory('imagePlugin', [function() {
    var contentForMessage = function(message) {
		var urls = message.match(/https?:\/\/[^\s]*\.(jpg|png|gif)\b/)
		if (urls != null) {
			var url = urls[0]; /* Actually parse one url per message */
			return '<img src="' + url + '" height="300">';
        }
        return null;
    }

    return {
        contentForMessage: contentForMessage
    }
}]);

weechat.factory('handlers', ['$rootScope', 'colors', 'pluginManager', function($rootScope, colors, pluginManager) {

    var handleBufferClosing = function(message) {
        var buffer_pointer = message['objects'][0]['content'][0]['pointers'][0];
        $rootScope.closeBuffer(buffer_pointer);
    }

    var handleLine = function(line, initial) {
        var buffer_line = {}
        var date = line['date'];
        var prefix = colors.parse(line['prefix']);
        var text = colors.parse(line['message']);
        var buffer = line['buffer'];
        var tags_array = line['tags_array'];
        var displayed = line['displayed'];
        var highlight = line['highlight'];
        var message = _.union(prefix, text);
        message =_.map(message, function(message) {
            if (message != "" && 'fg' in message) {
                message['fg'] = colors.prepareCss(message['fg']);
            }
            return message;
        });
        // Only react to line if its displayed
        if (displayed) {
            buffer_line['message'] = message;


            if (!_isActiveBuffer(buffer) && !initial) {
                $rootScope.buffers[buffer]['notification'] = true;
            }

            if (text[0] != undefined) {
              var additionalContent = pluginManager.contentForMessage(text[0]['text']);

              if (additionalContent) {
                  buffer_line['metadata'] = additionalContent;
              }
            }

            $rootScope.buffers[buffer]['lines'].push(buffer_line);

            buffer_line['date'] = date;

            if(!initial && (highlight || _.contains(tags_array, 'notify_private')) ) {
                $rootScope.createHighlight(prefix, text, message, buffer, additionalContent);
            }
        }
    }

    var handleBufferLineAdded = function(message) {
      message['objects'][0]['content'].forEach(function(l) {
        handleLine(l, false);
      });
    }

    /*
     * Returns whether or not this buffer is the active buffer
     */
    var _isActiveBuffer = function(buffer) {
      if ($rootScope.activeBuffer['id'] == buffer) {
          return true;
      } else {
          return false;
      }
    }

    var handleBufferOpened = function(message) {
        var obj = message['objects'][0]['content'][0];
        var fullName = obj['full_name'];
        var buffer = obj['pointers'][0];
        var short_name = obj['short_name'];
        var title = obj['title'];

        $rootScope.buffers[buffer] = { 'id': buffer, 'lines':[], 'full_name':fullName, 'short_name':short_name, 'title':title }
        
    }

    var handleBufferTitleChanged = function(message) {
        var obj = message['objects'][0]['content'][0];
        var buffer = obj['pointers'][0];
        var old = $rootScope.buffers[buffer];
        old['full_name'] = obj['full_name'];
        old['short_name'] = obj['short_name'];
        old['title'] = obj['title'];
    }


    /*
     * Handle answers to (bufinfo) messages
     *
     * (bufinfo) messages are specified by this client. It is the first
     * message that is sent to the relay after connection.
     */
    var handleBufferInfo = function(message) {
        // buffer info from message
        var bufferInfos = message['objects'][0]['content'];
        // buffers objects
        var buffers = {};
        for (var i = 0; i < bufferInfos.length ; i++) {
            var bufferInfo = bufferInfos[i];
            var pointer = bufferInfo['pointers'][0];
            bufferInfo['id'] = pointer;
            bufferInfo['lines'] = [];
            buffers[pointer] = bufferInfo
            if (i == 0) {
                // first buffer is active buffer by default
                $rootScope.activeBuffer = buffers[pointer];
            }
        }
        $rootScope.buffers = buffers;

        // Request latest buffer lines for each buffer
        $rootScope.getLines();
    }


    /*
     * Handle answers to (lineinfo) messages
     *
     * (lineinfo) messages are specified by this client. It is request after bufinfo completes
     */
    var handleLineInfo = function(message) {
      var lines = message['objects'][0]['content'].reverse();
      lines.forEach(function(l) {
        handleLine(l, true);
      });
    }
   
    var handleEvent = function(event) {
        if (_.has(eventHandlers, event['id'])) {
            eventHandlers[event['id']](event);
        }

    }

    var findMetaData = function(message) {
        if (message.indexOf('youtube.com') != -1) {
            var index = message.indexOf("?v=");
            var token = message.substr(index+3);
            return '<iframe width="560" height="315" src="http://www.youtube.com/embed/' + token + '" frameborder="0" allowfullscreen></iframe>'
        }
        return null;
    }

    var eventHandlers = {
        bufinfo: handleBufferInfo,
        lineinfo: handleLineInfo,
        _buffer_closing: handleBufferClosing, 
        _buffer_line_added: handleBufferLineAdded,
        _buffer_opened: handleBufferOpened,
        _buffer_title_changed: handleBufferTitleChanged,
    }

    return {
        handleEvent: handleEvent

    }

}]);

weechat.factory('connection', ['$rootScope', '$log', 'handlers', 'colors', function($rootScope, $log, handlers, colors) {
    protocol = new Protocol();
    var websocket = null;


    // Sanitizes messages to be sent to the weechat relay    
    var doSend = function(message) {
        msgs = message.replace(/[\r\n]+$/g, "").split("\n");
        for (var i = 0; i < msgs.length; i++) {
            $log.log('=' + msgs[i] + '=');
            $rootScope.commands.push("SENT: " + msgs[i]);
        }
        websocket.send(message);
    }
    
    // Takes care of the connection and websocket hooks
    var connect = function (hostport, proto, password) {
        websocket = new WebSocket("ws://" + hostport + "/weechat");
        websocket.binaryType = "arraybuffer"

        websocket.onopen = function (evt) {
            var send = ""; 
            // FIXME: does password need to be sent only if protocol is not weechat?
            if (proto == "weechat") {
                if (password) {
                    send += "init compression=off,password=" + password + "\n";
                }

                send += "(bufinfo) hdata buffer:gui_buffers(*) number,full_name,short_name,title\n";
                send += "sync\n";
            } else {

            }
            $log.info("Connected to relay");
            doSend(send);
            $rootScope.connected = true;
            $rootScope.$apply();
        }

        websocket.onclose = function (evt) {
            $log.info("Disconnected from relay");
            $rootScope.connected = false;
            $rootScope.$apply();
        }

        websocket.onmessage = function (evt) {
	    message = protocol.parse(evt.data)
            handlers.handleEvent(message);
            $rootScope.commands.push("RECV: " + evt.data + " TYPE:" + evt.type) ;
            $rootScope.$apply();
        }

        websocket.onerror = function (evt) {
            if (evt.type == "error" && websocket.readyState == 0) {
                $rootScope.errorMessage = true;
            }
            $log.error("Relay error " + evt.data);
        }

        this.websocket = websocket;
    }

    var sendMessage = function(message) {
        message = "input " + $rootScope.activeBuffer['full_name'] + " " + message + "\n"
        doSend(message);
    }

    var getLines = function(count) {
      var message = "(lineinfo) hdata buffer:gui_buffers(*)/own_lines/last_line(-"+count+")/data\n";
      doSend(message)
    }

    return {
        send: doSend,
        getLines: getLines,
        connect: connect,
        sendMessage: sendMessage
    }
}]);

weechat.controller('WeechatCtrl', ['$rootScope', '$scope', '$store', 'connection', function ($rootScope, $scope, $store, connection) {
    
    // Request notification permission
    Notification.requestPermission(function (status) {
        console.log('Notification permission status:',status);
        if (Notification.permission !== status) {
            Notification.permission = status;
        }
    });
    if(window.webkitNotifications != undefined) {
        if (window.webkitNotifications.checkPermission() == 0) { // 0 is PERMISSION_ALLOWED
            console.log('Notification permission status:', window.webkitNotifications.checkPermission() == 0);
            window.webkitNotifications.requestPermission();
        }
    }

    $rootScope.commands = []

    $rootScope.buffer = []
    $rootScope.buffers = {}
    $rootScope.activeBuffer = null;
    $store.bind($scope, "hostport", "localhost:9001");
    $store.bind($scope, "proto", "weechat");
    $store.bind($scope, "password", "");
    // TODO checkbox for saving password or not?
    // $scope.password = "";

    $rootScope.closeBuffer = function(buffer_pointer) {
        delete($rootScope.buffers[buffer_pointer]);
        var first_buffer = _.keys($rootScope.buffers)[0];
        $scope.setActiveBuffer(first_buffer);
    }

    $scope.setActiveBuffer = function(key) {
        $rootScope.activeBuffer['notification'] = false;
        $rootScope.buffers[key]['notification'] = true;
        $rootScope.activeBuffer = $rootScope.buffers[key];
        $rootScope.pageTitle = $rootScope.activeBuffer['short_name'] + ' | ' + $rootScope.activeBuffer['title'];
    };

    $scope.sendMessage = function() {
        connection.sendMessage($scope.command);
        $scope.command = "";
    };

    $scope.connect = function() {
        connection.connect($scope.hostport, $scope.proto, $scope.password);
    }
    $rootScope.getLines = function() {
      var count = 20;
      connection.getLines(20);
    }

    /* Function gets called from bufferLineAdded code if user should be notified */
    $rootScope.createHighlight = function(prefix, text, message, buffer, additionalContent) {
        var prefixs = "";
        prefixs += prefix[0].text;
        if(prefix[1] != undefined) {
            prefixs += prefix[1].text;
        }
        var messages = "";
        messages += text[0].text;

        var buffers = $rootScope.buffers[buffer];

        var title = buffers.full_name;
        var content = "<"+prefixs+">"+messages;

        var timeout = 15*1000;
        console.log('Displaying notification:',title,',with timeout:',timeout);
        var notification = new Notification(title, {body:content, icon:'img/favicon.png'});
        // Cancel notification automatically
        notification.onshow = function() {
            setTimeout(function() { notification.close() }, timeout);
        }
    };
}]
                  );