//
// <b>Integrity Manager PRE-Event Trigger</b>
// <p>
// Update timesheet item's time entries based on field changes in a related Task Item.
// <p>
//
// @param Field:relationship Timesheet_Field_Name
// Name of the relationship field that is used to link a (public) Task to a (private) Timesheet.
// Users without TimeSheet permisison should not be able to see this field.
//
// @param Field:float Duration_Field_Name
// Name of the float field in hte Task that contains the daily spent effort (max 24.0) which is 
// to be set as a time entry in the related TimeSheet for the current user.
// Users without TimeSheet permisison should not be able to see this field.
//



// For debugging purposes
function print(s)
{
    java.lang.System.out.println(s);
}


function abort(s)
{
    eb.abortScript(s, true);
}

function noPost(s)
{
    eb.abortScript(s, false);
}


var eb = bsf.lookupBean("siEnvironmentBean");
var sb = bsf.lookupBean("imServerBean");
var params = bsf.lookupBean("parametersBean");
var delta = bsf.lookupBean("imIssueDeltaBean");

eb.setMessageCategory("DEBUG");
logging = eb.messageCheck();
debugging = eb.messageCheck(10);

if (eb.getEventName() != "Issue.changed.pre"){
    abort(eb.getMessage("ERROR_SCRIPT_CONDITION"));
}

if (debugging) {
	eb.print("---------------begin---------------");			
}

var relationshipField = params.getParameter("Timesheet_Field_Name");

var durationField = params.getParameter("Duration_Field_Name");


// Check if we have  the linked issue
var relatedTimesheets;
if (relationshipField != null && relationshipField.length() > 0){
    relatedTimesheets = delta.getRelatedIssues(relationshipField);
}
else{
    relatedTimesheets = delta.getRelatedIssues();
}

// store current user for later use
var currentUser = delta.getCurrentUser();
// get the value to set from the delta
var duration = delta.getNewFieldValue(durationField)

// create a date (utc midnight) reflecting the value of today and the environment's timezone offset.
var now = new Date(); 
var currentDate = new Date(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(),  now.getUTCHours(), now.getUTCMinutes(), now.getUTCSeconds());
currentDate.setHours(0,0,0,0); // eliminate the time 

//valid format for the API call  is "MMM d, yyyy"	
var options = {  month: 'short', day: 'numeric' };
var currentDateStr = currentDate.toLocaleDateString('en-EN', options);

// use StringBuilder to create AIP command parameter
var actionSB = new java.lang.StringBuilder();
	actionSB.append("<ActionList>");
	
// Check each relatedTimesheets issue (should be only one)
for (var i = 0; i < relatedTimesheets.length; i++) {
    var timesheet = sb.getIssueDeltaBean(relatedTimesheets[i]);
	var issueID = timesheet.getIssueID().toString() ; // int
	
	// first try to find an entry that matches user and date, so we can decide whether to Create or Edit an entry
	var entryexists = 0; 
	// get all existing time entries 
	var tebs = timesheet.getTimeEntryBeans();//returns LocalTriggerManager.ScriptTimeEntryBean[] 	
	
	for (var tt = 0; (tt < tebs.length) && (entryexists === 0); tt++) {
		// iterate all existing entries
		var entryuser = tebs[tt].getUserName(); // String		
		var entryDate = new Date(tebs[tt].getEntryDate()); // convert java.util.Date into JavaScript Date
		/* TODO: use already given Duration for "add time" instead of "replace time"
			var entryDuration = tebs[tt].getDuration(); // float	
		*/
		// compare the User Strings
		var isUserEqual = currentUser === entryuser;
		// compare the Dates (if they a equal, the diff must be 0)
		var isDateEqual = (currentDate - entryDate)===0;
		
		// if both is true we have a match
		if (isUserEqual && isDateEqual ){
			entryexists = 1;
		}
		// debug logging
		if (debugging) {
			eb.print("currentUser = "+currentUser);	
			eb.print("entryuser = "+entryuser);
			eb.print("isUserEqual = "+isUserEqual);
			//---------
			eb.print("currentDate = "+currentDate);	
			eb.print("entryDate = "+entryDate);
			eb.print("isDateEqual = "+isDateEqual);
			//---------
			eb.print("entryexists = "+entryexists);
		}
	}
		
	if (entryexists>0){
		// existing entry was found - so we try to edit it
		actionSB.append("<Edit ");
	}	
	else{
		// no entry was found - so we create new one
		actionSB.append("<Create ");
	}

	actionSB.append("issueId=\"");
	actionSB.append(issueID); 
	actionSB.append("\" ");
	actionSB.append("user=\"");
	actionSB.append(currentUser);
	actionSB.append("\" ");
	actionSB.append("entryDate=\"");
	actionSB.append(currentDateStr);
	actionSB.append("\" >");
	actionSB.append("<Duration>");
	actionSB.append(duration);
	actionSB.append("</Duration>");
	actionSB.append("<Notes>set by trigger</Notes>");			
	
	if (entryexists>0){
		// existing entry was found - closed the edit
		actionSB.append("</Edit>");
	}
	else{
		// no existing entry was found - closed the create
		actionSB.append("</Create>");
	}
	// close the actionlist	
	actionSB.append("</ActionList>");


	if (debugging) {
		eb.print("setting Time Entry");
	}
	
	if (debugging) {
		eb.print(actionSB.toString());
	}
	
	// make the api call using the default API user	
	var s = eb.createAPISessionBean();
	var cr = s.createAPICommandRunnerBean();
	cr.setCommand("im", "settimeentries");
	cr.addOption("actionDefinition",actionSB.toString());
	var r = cr.execute();

}
// keep Delta's history clean
delta.clearFieldChange(durationField);
if (debugging) {
	eb.exit("---------------end---------------");			
}