util = require('util')
request = require('request-json');
extend = require('util')._extend
switchctrl = require('./builder/switchCtrl')
async = require 'async'
log = require('./utils/logger').getLogger()
log.info "Switches Logger test message"

#global parameter
#log = require('./app').log

class switches    
    constructor: (sw)->                
        @config = extend {}, sw
        @config.make ?= "bridge"
        @config.ofversion ?= 1.0
        @status = {}
        @statistics = {}
        @tapifs = []
        log.info "Switches - constructor -  new switch object created " + JSON.stringify @config
        @tapindex = 0
        
    create: (callback)->
        log.info "Switches -  creating a switch with config " + JSON.stringify @config
        switchctrl.create @config, (res) =>
            #console.log "post switch response" +res    
            log.info "Switches - switch creation result " + JSON.stringify res
            @uuid = res.id 
            @config.status = res.status
            callback res

    del: (callback)->
        log.info "Switches - deleting a switch " + JSON.stringify  @config        
        @delLinks()
        switchctrl.del @uuid, (res) =>
            #console.log res
            log.info "Switches -  switch  deletion result " + res
            @config.status = res.status
            callback res    

    get:()->
        "uuid":@uuid
        "config":@config
        "tapifs": @tapifs
        #"status":@status
        #"statistics":@statistics
    stop:(callback)->
        log.info "Switches -   stoping a switch " + JSON.stringify @config
        switchctrl.stop @uuid, (res) =>
            log.info "Switches - switch stop result " + JSON.stringify res
            @config.status = res.status
            #console.log res
            callback res                  

    start:(callback)->
        log.info "Switches -  starting a switch " + JSON.stringify  @config
        switchctrl.start @uuid, (res) =>
            log.info "Switches -   switch start result " + JSON.stringify res
            @config.status = res.status
            #console.log res
            callback res   

    getstatus : (callback)->
        log.info "getstatus called" + @uuid
        switchctrl.get @uuid, (result) =>
            log.info "Switches getstatus result " + JSON.stringify result
            @config.status = result.status
            callback result




    connect:(ifname,callback)->
        val =
            "ifname": ifname              
        log.info "Switches -  connecting a interface  #{ifname} in switch #{@config.name}"
        switchctrl.addInterface @uuid, val, (res) =>
            log.info "Switches - connect-  interface  #{ifname} connection result " + JSON.stringify res
            #console.log res
            callback res    

    createTapInterfaces:(ifname1,ifname2)->
        log.info "Switches - createTapInterfaces - input  #{ifname1}   #{ifname2}"
        result = switchctrl.CreateTapInterfaces ifname1, ifname2
        log.info "Switches - createTapInterfaces - result " + JSON.stringify result
        return result
    
    addTapInterface:(ifname,characteristics)->
        #@tapifs.push ifname if ifname?
        tapif =
            "name": ifname 
            "config": characteristics 
        log.info "addTapInterface   " + JSON.stringify tapif
        @tapifs.push tapif
        #@tapifs.push ifname if ifname?
        #log.info "Switches - addTapInterface - ifname " + ifname
        #@config = extend {}, characteristics
        return

    connectTapInterfaces:(callback)->
        log.info "Switches - connectTapInterfaces ...connecting the inter switch links"
        async.eachSeries @tapifs, (tapif,callback) =>
            log.info "connectTapInterfaces   " + JSON.stringify tapif
            @connect tapif.name,(result)=>                                
                callback()
        ,(err) =>
            if err
                log.error "connectTapInterfaces switches error occured " +  JSON.stringify err
                return callback false
            else
                log.info "connectTapInterfaces Switches all are processed "
                return callback true

    setLinkChars : (callback)->
        log.info "Switches: setting the link characterstics " + @config.name
        for tapif in @tapifs
            log.info "Switchs setLinkChars " + JSON.stringify tapif
            switchctrl.setLinkChars @uuid, tapif,(result) =>
                log.info "Switches: setLinkChars result " +  result            
                callback result

    delLinks : ()->
        for tapif in @tapifs
            log.info "deleting the link " + JSON.stringify tapif
            switchctrl.dellink tapif.name,(result) =>
                log.info "Switches: del link result " +  result                            

    switchStatus:()->   
        #Todo be done    
    statistics:()->
        #Todo

#####################################################################################################
module.exports = switches
#Todo items:  HTTP Request json timeout, response code to be checked