source: src/main/java/com/project/beautycenter/web/TerminiController.java

package com.project.beautycenter.web;

import com.project.beautycenter.model.Termini;
import com.project.beautycenter.model.Vraboteni;
import com.project.beautycenter.service.*;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.time.Instant;
import java.util.List;

@Controller
public class TerminiController {
    private final TerminiService terminiService;
    private final RezervacijaService rezervacijaService;
    private final UslugiService uslugiService;
    private final RezervacijaUslugiService rezervacijaUslugiService;
    private final VraboteniService vraboteniService;

    public TerminiController(TerminiService terminiService, RezervacijaService rezervacijaService, UslugiService uslugiService, RezervacijaUslugiService rezervacijaUslugiService, VraboteniService vraboteniService) {
        this.terminiService = terminiService;
        this.rezervacijaService = rezervacijaService;
        this.uslugiService = uslugiService;
        this.rezervacijaUslugiService = rezervacijaUslugiService;
        this.vraboteniService = vraboteniService;
    }

    @GetMapping("/termini")
    public String listTermini(Model model) {
        List<Termini> termini = this.terminiService.findAll();
        List<Termini> nerezTerm = this.terminiService.listAllNotReserved();

        model.addAttribute("nerezTerm", nerezTerm);
        model.addAttribute("termini", termini);

        return "free_termini.html";
    }

    @GetMapping("/termini/add")
    public String showAdd(Model model) {
        List<Vraboteni> vraboteni = this.vraboteniService.findAll();
        model.addAttribute("vraboteni", vraboteni);
        return "termini_form.html";
    }

    @GetMapping("/termini/{id}/edit")
    public String showEdit(@PathVariable Integer id, Model model) {
        Termini termin = this.terminiService.findbyId(id);
        List<Vraboteni> vraboteni = this.vraboteniService.findAll();

        model.addAttribute("termin", termin);
        model.addAttribute("vraboteni", vraboteni);

        return "termini_form.html";
    }

    @PostMapping("/termini")
    public String create(@RequestParam String pocetok,
                         @RequestParam Integer vremetraenje,
                         @RequestParam Integer vrabotenId) {

        this.terminiService.create(Instant.parse(pocetok.substring(0, pocetok.length() - 1).concat("+02:00")),
                vremetraenje, vrabotenId);
        return "redirect:/termini";
    }

    @PostMapping("/termini/{id}")
    public String update(@PathVariable Integer id,
                         @RequestParam String pocetok,
                         @RequestParam Integer vremetraenje,
                         @RequestParam Integer vrabotenId) {
        this.terminiService.update(id, Instant.parse(pocetok.substring(0, pocetok.length() - 1).concat("+02:00")),
                vremetraenje, vrabotenId);
        return "redirect:/termini";
    }

    @PostMapping({"/termini/{id}/delete"})
    public String delete(@PathVariable Integer id) {
        this.terminiService.delete(id);
        return "redirect:/termini";
    }

}