var systemEvents = Application("System Events")
var os = Library("os")

var workspacesDir = os.env("HOME") + "/.safari-workspaces"

function getNames() {
	
	var items = systemEvents.aliases.byName(workspacesDir).diskItems;
	var selectedItems = [];

	for (var i = 0; i < items.length; i++) {
	  var item = items[i];
	  if (item.class() != "folder" && item.visible()) {	  	
	    selectedItems.push(item.name().substring(0, item.name().length - 5));
	  }
	}
	return selectedItems;
}

function chooseFromList(title) {

	if(!title){
		title = "Choose Workspace"
	}
	
	var app = Application.currentApplication()
	app.includeStandardAdditions = true
	app.activate()

	var choices = getNames()
	var choice = app.chooseFromList(choices, {		
	    withPrompt: title,
	    defaultItems: choices[0],
	    buttons: ["Cancel", "OK"],
	    defaultButton: "OK"
	})

	// if(!choice){
	// 	choice = ""
	// }

	return choice
}

function getSafariWindowTitles() {

	var app = Application('Safari')
	var titles = []
	var windows = app.windows()
	for (var k = 0; k < windows.length; k++) {
	  	
	  	var url = app.windows.at(k).currentTab.url()
	  	var name = app.windows.at(k).currentTab.name()
	  	var id = app.windows.at(k).id()
	 	titles.push(name)
	}
	return titles
}

function safariWindowWithTitle(title) {
	var app = Application('Safari')	
	var windows = app.windows()
	for (var k = 0; k < windows.length; k++) {
	  	
	  	var name = app.windows.at(k).currentTab.name()
	  	if(name == title){
	  		var id = app.windows.at(k).id()
	  		return id
	  	}
	}
	return -1
}

function chooseFromSafariWindows() {
	
	var app = Application.currentApplication()
	app.includeStandardAdditions = true
	app.activate()

	var choices = getSafariWindowTitles()
	var choice = app.chooseFromList(choices, {		
	    withPrompt: "Choose Window:",
	    defaultItems: choices[0]
	})

	return choice
}

function saveProperties(workspaceName, workspaceProps) {
	var path = workspacesDir + "/" + workspaceName + ".json"
	var result = os.writeJson(path, workspaceProps)
	var success = result[0]
	return success
}

function readProperties(workspaceName) {
	var result = os.readJson(workspacesDir + "/" + workspaceName + ".json")
	if(result[0]){
		return result[1]
	}
	return {error: "workspace not found"}
}

function addTab(id, url){
    var app = Application("Safari")  
    var tab = app.Tab()
    tab.url = url
    var win = app.windows.byId(id)
    win.tabs.push(tab)
}

function allWindows(){
	var app = Application("Safari")
    var windows = []
    for(var i = 0; i < app.windows().length; i++){        
        windows.push(app.windows.at(i).id())
    }    
    return windows.sort(function(a, b){return a-b})
}

function newWindow(url){
	
	var app = Application("Safari")
    app.activate()
    
    if(url){
    	app.Document({url: url}).make()	
    }else{
    	app.Document().make()
    }
    
    var windows = allWindows()
    return windows[windows.length - 1]
}

function addNewWindowTo(workspaceName) {

	var workspaceProps = readProperties(workspaceName)
	var winID = newWindow()
	var workspaceWindow = {id: winID, tabs: []}
	workspaceProps["Safari"].push(workspaceWindow)
	saveProperties(workspaceName, workspaceProps)
}

function shouldIgnoreUrl(url) {
	var urls = [
		"https://gl.intermodi.cc",		
		"https://news.ycombinator.com",
		"https://git.iris-cloud.de",
		"https://web.threema.ch",
		"https://kdw.intermodi.cc",
		"http://euangoddard.github.io/clipboard2markdown/",
		"safari-resource:/ErrorPage.html"
	]

	for (var i = 0; i < urls.length; i++) {
		if(url.startsWith(urls[i])){
			return true
		}
	}
	return false
}
function openWindows(workspaceName) {

  	var workspaceProps = readProperties(workspaceName)
  
  	var app = Application("Safari")   	

  	for (var i = 0; i < workspaceProps["Safari"].length; i++) {
    
	    var workspaceWindow = workspaceProps["Safari"][i]
	    var windowExists = false    
	    for(var j = 0; j < app.windows().length; j++){        
	      	var openWindow = app.windows.at(j)
	      	if(openWindow.id() == workspaceWindow.id){                  
	        	windowExists = true
	      	}
	    }

	    if(!windowExists){
	      
	     	var firstTab = workspaceWindow.tabs[0]
	     	var newWindowID = newWindow(firstTab)
	     	// console.log("new window created", newWindowID)
	      	workspaceWindow.id = newWindowID
	     	for (var k = 1; k < workspaceWindow.tabs.length; k++) {
	        	// console.log(workspaceWindow.tabs[k])
	        	var url = workspaceWindow.tabs[k]
		        if(!shouldIgnoreUrl(url)){
		        	addTab(newWindowID, workspaceWindow.tabs[k])	
		        }        
	      	}
	    }else{
	    	console.log("window exists", workspaceWindow.id)
	    }
	    saveProperties(workspaceName, workspaceProps)
  	}
}

function saveWindows(workspaceName, workspaceProps) {
	
	var app = Application("Safari")	

	for(var i = 0; i < app.windows().length; i++){        

	    var openWindow = app.windows.at(i)
	    // console.log("Safari window", openWindow.id())
		for (var j = 0; j < workspaceProps["Safari"].length; j++) {
				
	      	var workspaceWindow = workspaceProps["Safari"][j]
	      	if(openWindow.id() == workspaceWindow.id){
	        
	        	workspaceWindow.tabs = []
		        for (var k = 0; k < app.windows.at(i).tabs.length; k++) {
		          	
		          	var url = openWindow.tabs.at(k).url()
		         	if(url){
		          		if(!shouldIgnoreUrl(url)){
		          			workspaceWindow.tabs.push(url)
		          		}
		          	}
		        }   
			}
		}
	}
	log(workspaceProps)
	saveProperties(workspaceName, workspaceProps)
} 

function log(obj) {
	console.log(JSON.stringify(obj, null, 2))
}

function addWindowToWorkspace(id, workspaceName) {
	var app = Application("Safari")	
	var openWindow = app.windows.byId(id)
	var workspaceProps = readProperties(workspaceName)	
	var workspaceWindow = {id: id, tabs: []}
	for (var k = 0; k < openWindow.tabs.length; k++) {
	  	
	  	var url = openWindow.tabs.at(k).url()
	 	if(url){
	  		if(!shouldIgnoreUrl(url)){
	  			workspaceWindow.tabs.push(url)
	  		}
	  	}
	} 
	workspaceProps["Safari"].push(workspaceWindow)
	saveWindows(workspaceName, workspaceProps)
}

// todo: choose from list for window to remove from workspace
function closeWindows(workspaceName) {
  
  	var app = Application("Safari")  
	var workspaceProps = readProperties(workspaceName)
	saveWindows(workspaceName, workspaceProps)
	var windowsToRemove = []

	for (var i = 0; i < workspaceProps["Safari"].length; i++) {

		var workspaceWindow = workspaceProps["Safari"][i]
		
		try{
		    app.close(app.windows.byId(workspaceWindow.id))  			
		}catch(err){
			// fenster die vorher manuell geschlossen wurden 
			// werden aus der liste an fenstern entfernt
			// windowsToRemove.push(workspaceProps["Safari"][i].id)		

		}
	}

	// for (var i = 0; i < workspaceProps["Safari"].length; i++) {

	// 	var workspaceWindow = workspaceProps["Safari"][i]
		
	// 	for (var j = 0; j < windowsToRemove.length; j++) {
	// 		if(workspaceWindow.id == windowsToRemove[j]){
	// 			try{
	// 			    workspaceProps["Safari"].splice([i], 1)
	// 			}catch(err){
	// 			}
	// 		}
	// 	}
	// }

	
}