/**
 * @constructor
**/
function ChatInfo(id) {
    /** @const @type {string} */
    this.id = id;
    /** @type {string} */
    this.name;
    /** @type {number} */
    this.version = 0;
};

ChatInfo.prototype.toStatic = function(t) {
    return t >= this.version ? undefined : {
        "id": this.id
        ,"name": this.name
    };
};

ChatInfo.prototype.update = function(data, t) {
    if (data["name"] !== undefined) this.name = data["name"];
    this.version = Math.max(this.version, t);
};

/**
 * @constructor
 * @param {*} data
**/
function Command(data) {
    /** @const @type {string} */
    this.desc = data["desc"];
    /** @const @type {string} */
    this.name = data["name"];
    /** @const @type {string} */
    this.type = data["type"];
    /** @const @type {string} */
    this.usage = data["usage"];
    /** @const @type {string} */
    this.category = data["category"];
};

/**
 * @param {number} t
 * @return {Object}
**/
Command.prototype.toStatic = function(t) {
    return {
        "desc": this.desc
        ,"name": this.name
        ,"type": this.type
        ,"usage": this.usage
        ,"category": this.category
    };
};

/**
 * @constructor
**/
function SelfPreferences() {
    /** @type {Object.<string, number>} */
    this.favoriteEmojis = {};

    /** @type {Array.<string>} */
    this.highlights = [];
};

/**
 * @param {*} prefs
**/
SelfPreferences.prototype.update = function(prefs, t) {
    this.favoriteEmojis = /** @type {Object<string,number>} */ (JSON.parse(prefs["emoji_use"]));
    if (prefs["highlight_words"])
        this.highlights = (prefs["highlight_words"]||"").split(',').filter(function(i) {
            return i.trim() !== '';
        });
    else if (prefs["highlights"])
        this.highlights = prefs["highlights"];
    this.version = Math.max(this.version, t);
};

SelfPreferences.prototype.toStatic = function(t) {
    return this.version > t ? null : {
        "emoji_use": JSON.stringify(this.favoriteEmojis)
        ,"highlights": this.highlights
    };
};

/**
 * @constructor
**/
function ChatContext() {
    /** @type {ChatInfo} */
    this.team = null;
    /** @type {Object.<string, Room>} */
    this.channels = {};
    /** @type {Object.<string, Chatter>} */
    this.users = {};
    /** @type {Chatter} */
    this.self = null;
    /** @type {{version: number, data: Object.<string, string>}} */
    this.emojis = { version: 0, data: {} };
    /** @type {{version: number, data: Object.<string, Command>}} */
    this.commands = {version: 0, data: {} };
    /** @type {Object.<string, Object.<string, number>>} */
    this.typing = {};
    /** @type {number} */
    this.staticV = 0;
    /** @type {number} */
    this.liveV = 0;
};

ChatContext.prototype.userFactory = function(userData) {
    return new Chatter(userData["id"]);
};

ChatContext.prototype.roomFactory = function(roomData) {
    return roomData["pv"] ?
        new PrivateMessageRoom(roomData["id"], this.users[roomData["user"]]) :
        new Room(roomData["id"]);
};

ChatContext.prototype.teamFactory = function(id) {
    return new ChatInfo(id);
};

ChatContext.prototype.commandFactory = function(data) {
    return new Command(data);
};

/**
 * @param {*} data
 * @param {number} t
**/
ChatContext.prototype.updateStatic = function(data, t) {
    if (data["users"]) for (var i =0, nbUsers = data["users"].length; i < nbUsers; i++) {
        var userObj = this.users[data["users"][i]["id"]];
        if (!userObj)
            userObj = this.users[data["users"][i]["id"]] = this.userFactory(data["users"][i]);
        userObj.update(data["users"][i], t);
    }
    if (data["channels"]) for (var i =0, nbChan = data["channels"].length; i < nbChan; i++) {
        var chanObj = this.channels[data["channels"][i]["id"]];
        if (!chanObj)
            chanObj = this.channels[data["channels"][i]["id"]] = this.roomFactory(data["channels"][i]);
        chanObj.update(data["channels"][i], this, t);
    }
    if (data["emojis"]) {
        this.emojis.data = data["emojis"];
        this.emojis.version = t;
    }
    if (data["commands"] !== undefined){
        this.commands.data = {};
        for (var i in data["commands"]) {
            this.commands.data[i] = this.commandFactory(data["commands"][i]);
        }
        this.commands.version = t;
    }
    if (data["team"]) {
        if (!this.team) this.team = this.teamFactory(data["team"]["id"]);
        this.team.update(data["team"], t);
    }
    this.staticV = Math.max(this.staticV, t);
    if (data["self"]) {
        this.self = this.users[data["self"]["id"]] || null;
        if (this.self) {
            if (!this.self.prefs)
                this.self.prefs = new SelfPreferences();
            this.self.prefs.update(data["self"]["prefs"], t);
        } else {
            this.staticV = 0;
        }
    }
    if (data["typing"] !== undefined) {
        this.typing = {};
        for (var i in data["typing"]) {
            this.typing[i] = {};
            for (var j in data["typing"][i])
                this.typing[i][j] = t;
        }
    }
};

/**
 * @param {number} t
 * @param {number} now
**/
ChatContext.prototype.toStatic = function(t, now) {
    var channels = []
        ,users = [];
    var res = {
        "team": this.team.toStatic(t)
        ,"self": {
            "id": this.self.id
            ,"prefs": this.self.prefs.toStatic(t)
        }
        ,"emojis": this.emojis.version > t ? this.emojis.data : undefined
    };
    if (this.commands.version > t) {
        res["commands"] = {};
        for (var i in this.commands.data)
            res["commands"][i] = this.commands.data[i].toStatic(t);
    }
    for (var chanId in this.channels) {
        var chan = this.channels[chanId].toStatic(t);
        if (chan)
            channels.push(chan);
    }
    if (channels.length)
        res["channels"] = channels;
    for (var userId in this.users) {
        var user = this.users[userId].toStatic(t);

        if (user)
            users.push(user);
    }
    if (users.length)
        res["users"] = users;
    for (var typingChan in this.typing) {
        var tChan = null;
        for (var typingUser in this.typing[typingChan]) {
            if (this.typing[typingChan][typingUser] +3000 >= now) {
                if (!tChan) tChan = {};
                tChan[typingUser] = 1;
            } else {
                delete this.typing[typingChan][typingUser];
            }
        }
        if (tChan) {
            if (res["typing"] === undefined)
                res["typing"] = {};
            res["typing"][typingChan] = tChan;
        }
        else
            delete this.typing[typingChan];
    }
    return res;
};

/**
 * @param {number} now
**/
ChatContext.prototype.cleanTyping = function(now) {
    var updated = false;
    for (var typingChan in this.typing) {
        var chanEmpty = true;
        for (var typingUser in this.typing[typingChan]) {
            if (this.typing[typingChan][typingUser] +3000 < now) {
                delete this.typing[typingChan][typingUser];
                updated = true;
            } else {
                chanEmpty = false;
            }
        }
        if (chanEmpty) {
            delete this.typing[typingChan];
            updated = true;
        }
    }
    return updated;
};

/** @suppress {undefinedVars,checkTypes} */
(function() {
    if (typeof module !== "undefined") {
        module.exports.ChatContext = ChatContext;
        module.exports.ChatInfo = ChatInfo;
        module.exports.Command = Command;
    }
})();