// SPDX-FileCopyrightText: <Alexander Marthin Klemensen stud-marthin@ruc.dk>
// SPDX-FileCopyrightText: <Ian Valentin Christensen stud-ianc@ruc.dk>
// SPDX-FileCopyrightText: <Zahed Noos zahed@ruc.dk>
// SPDX-License-Identifier: GPL-3.0-or-later

package com.example.portfolio2;

import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;

import java.util.List;

/// Bachelorizer - Controller
class Controller{

	/// Application model
	private Model model;

	/// Application view
	private HelloApplication view;

	/// clear the participation database at program launch
	void initialize() {
		model.initialize();
	}

	/// default constructor
	///
	/// @param model  Application model
	/// @param view   Application view
	Controller(Model model, HelloApplication view){
		this.model=model; this.view=view;
	}

	/// callback when category box is selected
	///
	/// @param combo   involved activity box
	/// @param select  selected item
	/// @param area    whole text area
	void onComboSelected(ComboBox<String> combo, ComboBox<String> select, TextArea area) {

		// clear the activity selection box
		select.getItems().clear();

		// clear text area
		area.clear();

		// fill activity box using model method
		select.getItems().addAll(model.selectProgram(combo.getValue()));
	}

	/// callback when activity box is selected
	///
	/// @param combo   involved activity box
	/// @param select  selected item
	/// @param area    whole text area
	void onActivitySelected(ComboBox<String> combo, ComboBox<String> select, TextArea area) {

		// pass the value chosen in the box
		addActivity(select.getValue(), area);

		// update text area based on category choice
		//
		// users can choose from the ComboBox, string (activity) and the area would update.
		updateArea(combo, area);
	}

	/// callback when subject module box is selected
	///
	/// @param subject1        involved 1st column subject module box
	/// @param subject2        involved 2nd column subject module box
	/// @param subjectModules  list of selected subject modules
	void onSubjectModuleSelected(ComboBox<String> subject1, ComboBox<String> subject2, List<String> subjectModules) {

		// Beautiful loop we've created to remove option chosen in one subject module box from the other
		for (String sub : subjectModules) {
			if (sub.equals(subject1.getValue())) {
				subject2.getItems().remove(subject1.getValue());
			} else if (!sub.equals(subject1.getValue()) && !subject2.getItems().contains(sub)) {
				subject2.getItems().add(sub);
			}
		}
	}

	/// add participation to database
	/// @param s         activity identifier
	/// @param textArea  whole text area
	void addActivity(String s, TextArea textArea) {
		model.addParticipation(model.getActivityIndeks(s));
	}

	/// update text area for an activity box
	///
	/// Clears the text area
	/// and adds all activity names from activities in participation.
	///
	/// @param combo     involved activity box
	/// @param textArea  whole text area
	void updateArea(ComboBox<String> combo, TextArea textArea) {
		textArea.clear();
		for(String s : model.getParticipation(combo.getValue())) {
			textArea.appendText(s + "\n");
		}
	}

	/// update label with current ECTS of program type
	/// @param ectslabel  text display area for ECTS points
	/// @param comboBox   involved activity box
	void updateEcts(Label ectslabel, ComboBox<String> comboBox) {
		ectslabel.setText("ECTS: "+model.getSumEcts(comboBox.getValue()));
	}

	void fillElective(ComboBox<String> electiveBox) {
		electiveBox.getItems().addAll(model.getAllActivities());
	}
}