///////////////////////////////////////////////////
////////////////////// 通道管理 ///////////////////
///////////////////////////////////////////////////
var mod_channel = mod_channel || cls_mod.new("mod_channel", "channel", app_server);

//最小通道id
mod_channel.minid = 100000;
//最大通道id
mod_channel.maxid = 999999;

//可用的通道id列表
mod_channel.ids = [];
mod_channel.ids.length = mod_channel.maxid - mod_channel.minid + 1;
for (var i = 0; i < mod_channel.ids.length; i++) {
	mod_channel.ids[i] = mod_channel.minid + i;
};
//可用的通道id列表的有效长度
mod_channel.validlen = mod_channel.maxid - mod_channel.minid + 1;

//通道列表
mod_channel.list = [];
mod_channel.list.length = mod_channel.maxid - mod_channel.minid + 1;

mod_channel.test = function(pack){
	pack.data = "123456789";
	return pack;
}

//创建
mod_channel.create = function(pack){
	//在有效通道id列表中随机数组下标
	var idx = min_random(0, mod_channel.validlen - 1);
	//确定通道id
	var id = mod_channel.ids[idx];
	//将有效数组的最后一个房号移至该位置
	if (idx < mod_channel.validlen - 1) {
		mod_channel.ids[idx] = mod_channel.ids[mod_channel.validlen - 1];
	};
	mod_channel.ids[mod_channel.validlen - 1] = 0;
	//有效数组长度减1
	mod_channel.validlen = mod_channel.validlen - 1;
	//根据通道id创建通道
	var o_channel = {};
	o_channel.id = id;
	o_channel.plist = []; //谁在通道里面
	//添加到通道列表中
	mod_channel.list[id - mod_channel.minid] = o_channel;

	//返回前端
	pack.data = {};
	pack.data.channelid = id;
	return pack;
}

//释放
mod_channel.free = function(pack){
	var channelid = parseInt(pack.data.channelid);

	//通道序号
	var idx = channelid - mod_channel.minid;

	//检查通道id
	if (idx < 0 || idx >= mod_channel.list.length) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	if (!mod_channel.list[idx]) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	//释放通道	
	mod_channel.list[idx] = null;

	//释放通道id
    mod_channel.ids[mod_channel.validlen] = channelid;
    mod_channel.validlen = mod_channel.validlen + 1;

	//返回前端
	pack.data = {};
	pack.data.state = 0;
	return pack;
}

//加入
mod_channel.join = function(pack){
	var channelid = parseInt(pack.data.channelid);

	//通道序号
	var idx = channelid - mod_channel.minid;

	//检查通道id
	if (idx < 0 || idx >= mod_channel.list.length) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	if (!mod_channel.list[idx]) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	o_channel = mod_channel.list[idx];
	var p = {};
	p.conmode = pack.conmode;
	p.fromid  = pack.fromid;
	o_channel.plist.push(p);

	//返回前端
	pack.data = {};
	pack.data.state = 0;
	return pack;
}

//退出
mod_channel.exit = function(pack){
	var channelid = parseInt(pack.data.channelid);

	//通道序号
	var idx = channelid - mod_channel.minid;

	//检查通道id
	if (idx < 0 || idx >= mod_channel.list.length) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	if (!mod_channel.list[idx]) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	o_channel = mod_channel.list[idx];
	for (var i = 0; i < o_channel.plist.length; i++) {
		if (o_channel.plist[i]) {
			if (o_channel.plist[i].fromid == pack.fromid) {
				o_channel.plist[i] = null;
				//返回前端
				pack.data = {};
				pack.data.state = 0;
				return pack;
			}
		}
	}

	//返回前端
	pack.data = {};
	pack.data.state = 1;
	pack.data.error = "未在通道内";
	return pack;
}

//广播
mod_channel.broadcast = function(pack){
	var channelid = parseInt(pack.data.channelid);
	var content = pack.data.msg;

	//通道序号
	var idx = channelid - mod_channel.minid;

	//检查通道id
	if (idx < 0 || idx >= mod_channel.list.length) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	if (!mod_channel.list[idx]) {
		pack.data = {};
		pack.data.state = 1;
		pack.data.error = "通道id不存在";
		return pack;
	}

	o_channel = mod_channel.list[idx];
	for (var i = 0; i < o_channel.plist.length; i++) {
		if (o_channel.plist[i]) {			
			//广播前端
			var msg = {};
			msg.app = pack.app;
			msg.route = pack.route;
			msg.rpc = pack.rpc;
			msg.conmode = o_channel.plist[i].conmode;
			msg.fromid  = o_channel.plist[i].fromid;
			msg.data = {};
			msg.data.state = 0;
			msg.data.msg = content;
			mod_channel.app.SendPack(msg);
		}
	}
}

//断线
mod_channel.OnTcpDisConnected = function(str_tcpid){
	for (var i = 0; i < mod_channel.list.length; i++) {
		if (mod_channel.list[i]){
			for (var j = 0; j < mod_channel.list[i].plist.length; j++) {
				if (mod_channel.list[i].plist[j]) {
					if (mod_channel.list[i].plist[j].fromid == str_tcpid) {
						//广播前端
						var msg = {};
						msg.app = mod_channel.app.appname;
						msg.route = mod_channel.routename;
						msg.rpc = "disconnected";
						msg.data = {};
						msg.data.channelid = mod_channel.list[i].id;
						msg.data.idx = j;
						for (var k = 0; k < mod_channel.list[i].plist.length; k++) {
							if (k != j){
								msg.conmode = mod_channel.list[i].plist[k].conmode;
								msg.fromid  = mod_channel.list[i].plist[k].fromid;
								mod_channel.app.SendPack(msg);
							}
						}
						return;
					}
				}
			}
		}
	}
}

mod_channel.timer = min_ontime(function(){
	mod_channel.ran = min_random(1,100);
}, 2000);