package nl.saxion.budgetblackboard.controllers;

import nl.saxion.budgetblackboard.dataProvider.DataProvider;
import nl.saxion.budgetblackboard.models.Course;
import nl.saxion.budgetblackboard.models.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;

@Controller
@RequestMapping(path = "/courses/subjects")
public class SubjectController {
    private DataProvider data = DataProvider.getInstance();
    private Course course;
    private ArrayList<Subject> subjects;
    private static boolean firstInvocation;

    @GetMapping(path = "/{ID}")
    public String getSubjects(@PathVariable int ID, Model model) {
        this.course = this.data.findCourseByID(ID);
        if (!firstInvocation) {
            this.subjects = this.course.getSubjects();
        }
        else {
            this.course.setSubjects(subjects);
        }
        model.addAttribute("subjects", this.course.getSubjects());
        return "indexSubject";
    }

    @GetMapping(path = "/add")
    public String add() {
        return "addSubject";
    }

    @PostMapping(path = "/add")
    public String addSubject(Subject subject, Model model) {
        this.course.addSubject(subject);
        model.addAttribute("subjects", this.course.getSubjects());
        return "redirect:/courses/subjects/" + this.course.getID();
    }

    @GetMapping(path = "/edit/{id}")
    public String edit(@PathVariable int id, Model model) {
        Subject subject = this.data.getSubjectByID(this.course, id);
        model.addAttribute("subject", subject);
        return "editSubject";
    }

    @PostMapping(path = "/edit/{id}")
    public String editSubject(Subject editedSubject, @PathVariable int id, Model model) {
        Subject uneditedSubject = this.data.getSubjectByID(this.course, id);
        ArrayList<Subject> updatedSubjects = this.data.updateSubject(this.course, uneditedSubject, editedSubject, id);
        model.addAttribute("subjects", updatedSubjects);
        return "redirect:/courses/subjects/" + this.course.getID();
    }

    @GetMapping(path = "/delete/{id}")
    public String deleteSubject(@PathVariable int id, Model model) {
        System.out.println("deleting subject");
        this.subjects = this.data.deleteSubjectInCourse(this.course, id);
        this.course.setSubjects(this.subjects);
        model.addAttribute("subjects", this.subjects);
        firstInvocation = true;
        return "redirect:/courses/subjects/" + this.course.getID();
    }
}