var currenttext = "";
var longer_active = false;
var current_tags = "{}";

var result = "ERROR";
var original_text = "ERROR";
var current_sum ="";


console.log( "Background - Loaded" );
var privacy_location= "https://www.uni-hannover.de/datenschutzerklaerung/";

/**
 * This function will be fired if a javascript, sending a message to Firefox.
 * The scripts cannont send messages directly to other scripts. They have to create a so called "promise first"
 *
 **/
async function listener(msg){
    try{
		console.log("hallo vom bg script");
		if(msg.auswertung === "auswerten"){	
		   return Promise.resolve({msg: result});
		} else if(msg.auswertung === "getCurrent"){
			return Promise.resolve({msg: currenttext});
		} else if(msg.auswertung === "getTags"){
			return Promise.resolve({msg: current_tags}); 
		} else if(msg.createadvanced === "context"){
			await browser.tabs.query({active: true, currentWindow: true})
			.then(tabs => {
				tab = tabs.pop();  
				console.log(tab.url);
				privacy_location = tab.url;
			});
			console.log("leite weiter an das content");	
			browser.tabs.sendMessage(tab.id, {func: "create_advanced", advanced: current_sum});
				//console.log(response);
				
		} else if(msg.auswertung === "summary"){
			current_sum = msg.set;
		} else if(msg.auswertung === "getsum"){
			return Promise.resolve({msg: current_sum});
		} else if(msg.auswertung === "getoriginal"){
			return Promise.resolve({msg: original_text});
		} else if(msg.auswertung === "get_privacy_location"){
			return Promise.resolve({url: privacy_location});
		} else if(msg.get === "summary"){
			var html_code = "ERR";
			var tab = "";
			await browser.tabs.query({active: true, currentWindow: true})
			.then(tabs => {
				tab = tabs.pop();  
				console.log(tab.url);
				privacy_location = tab.url;
			});		
			await browser.tabs.sendMessage(tab.id, {func: "get_policy"}).then(response => {
				console.log(response);
				html_code = response.html;
				//console.log(html_code);
			});	
			return Promise.resolve({back: html_code});	
		} else if(msg.get === "summary_with_id"){
			var html_code = "ERR";
			var tab = "";
			await browser.tabs.query({active: true, currentWindow: true})
			.then(tabs => {
				tab = tabs.pop();  
				console.log(tab.url);
				privacy_location = tab.url;
			});		
			console.log("dieser Promise backend");
			await browser.tabs.sendMessage(tab.id, {func: "get_policy_and_id"}).then(response => {
				console.log(response);
				html_code = response.html;
				//console.log(html_code);
			});	
			return Promise.resolve({back: html_code});		
		} else if(msg.auswertung == "check_if_dsgvo") {
			await browser.tabs.query({active: true, currentWindow: true})
			.then(tabs => {
				tab = tabs.pop();  
				console.log(tab.url);
				privacy_location = tab.url;
			});		
			console.log("checke auf dsgvo");
			let dsgvo = false;
			let thirdparty = "";
			await browser.tabs.sendMessage(tab.id, {func: "check_if_dsgvo"}).then(response => {
				console.log(response.is_dsgvo);
				dsgvo = response.is_dsgvo;
				thirdparty = response.third;
				console.log(thirdparty);
			});	
			return Promise.resolve({is_dsgvo: dsgvo, third: thirdparty});	
		} else { 
			return Promise.resolve({result: ""});
		}
	} catch(e){
		console.log(e);
	}
}

/**
 * This function is connection the content-script and tries to get the url from the tab where the content-script is running
 */
function getInfosFromContentScript(stmt){
	var html_code = "ERR";
    browser.tabs.query({active: true, currentWindow: true})
      .then(tabs => {
			let tab = tabs.pop();  
			console.log(tab.url);
			privacy_location = tab.url;
        	browser.tabs.sendMessage(tab.id, {func: stmt}).then(response => {
				//console.log(response);
				html_code = response.html;
				console.log(html_code);
        		return Promise.resolve({html: response.html});
        	})
	  });
	return html_code;
}


/**
 * Debug function for the tab change bug 
 */
function debug(){
    browser.tabs.query({})
      .then(tabs => {
       console.log(tabs.length + " anzahl der tabs"); 
       });
            
}

/*chrome.tabs.onActivated.addListener(function(activeInfo) {
    console.log(activeInfo.tabId);
});*/

/**
 * register the listener
 */
browser.runtime.onMessage.addListener(listener);