/**
 * BrowserDetect
 * version 1 21.11.11
 * 
 * Detection de navigateur , version, version minimale supportée, version fullSupport, OS
 * basé sur http://www.quirksmode.org/js/detect.html
 * 
 * dans le tableau dataBrowser on indique 
 * minimal : x = version minimal du navigateur
 * fullSupport : x = version qui est completement supporté par le site
 * 
 * si 0 alors on c'est bon, si -1 toujours refusé
 * 
 * les infos sont dans :
 * BrowserDectect.version
 * BrowserDectect.browser
 * BrowserDectect.isMinimal
 * BrowserDectect.isFullSupport
 * 
 * page de redirection : redirectPage
 */
var BrowserDetect = {
  
  // page sur laquel on redirige
  redirectPage : "old_browsers.html",
  
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
    this.isMinimal = this.searchMininum(this.dataBrowser);
    this.isFullSupport = this.searchFullSupport(this.dataBrowser);
	},
  
  searchMininum: function(data) {
		for (var i=0;i<data.length;i++)	{
      if(data[i].identity == this.browser) {
        
        if(data[i].minimum == -1) {
          return false;
        }
        if(data[i].minimum == 0) {
          return true;
        }
        
        if(data[i].minimum <= this.version) {
          return true;
        } else {
          return false;
        }
      }
		}    
    
  },
  
  searchFullSupport: function(data) {
		for (var i=0;i<data.length;i++)	{
      if(data[i].identity == this.browser) {
        
       
        if(data[i].fullSupport == -1) {
          return false;
        }
        if(data[i].fullSupport == 0) {
          return true;
        }
        
        if(data[i].fullSupport <= this.version) {
          return true;
        } else {
          return false;
        }
      }
		}    
    
  },  
  
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
  
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
  
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome",
      minimum: 13,
      fullSupport:13
		},
		{ 
      string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb",
      minimum: -1,
      fullSupport:-1
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version",
      minimum: 5,
      fullSupport:5
		},
		{
			prop: window.opera,
			identity: "Opera",
			versionSearch: "Version",
      minimum: 0,
      fullSupport:0
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab",
      minimum: -1
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror",
      minimum: -1,
      fullSupport:-1
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox",
      minimum: 3.6,
      fullSupport:6
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino",
      minimum: -1,
      fullSupport:-1
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape",
      minimum: -1,
      fullSupport:-1
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE",
      minimum: 8,
      fullSupport:-1
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv",
      minimum: 0,
      fullSupport:-1
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla",
      minimum: -1,
      fullSupport:-1
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			   string: navigator.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	  },
		{
			   string: navigator.userAgent,
			   subString: "iPad",
			   identity: "iPad"
	  },
		{
			   string: navigator.userAgent,
			   subString: "Android",
			   identity: "Android"
	  },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();