package com.example.wfwebapi.controller;

import java.util.List;
import java.util.stream.Collectors;
import com.example.wfwebapi.assembler.UserModelAssembler;
import com.example.wfwebapi.exception.ResourceNotFoundException;
import com.example.wfwebapi.model.User;
import com.example.wfwebapi.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.hateoas.CollectionModel;
import org.springframework.hateoas.EntityModel;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api/v1/users")
public class UserController {

    @Autowired
    private UserRepository userRepository;

    @Autowired
    private UserModelAssembler assembler;

    // GET /api/v1/users/{id}
    @GetMapping("/{id}")
    public EntityModel<User> getUserById(@PathVariable Long id) {
        User user = userRepository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException("Utilisateur non trouvé : " + id));
        return assembler.toModel(user);
    }

    // GET /api/v1/users/all?index=0&count=5
    @GetMapping("/all")
    public CollectionModel<EntityModel<User>> getAllUsers(@RequestParam int index, @RequestParam int count) {
        List<EntityModel<User>> users = userRepository.findAll(PageRequest.of(index, count))
                .stream().map(assembler::toModel)
                .collect(Collectors.toList());
        return CollectionModel.of(users);
    }

    // POST /api/v1/users
    @PostMapping
    public EntityModel<User> createUser(@RequestBody User newUser) {
        User user = userRepository.save(newUser);
        return assembler.toModel(user);
    }

    // PUT /api/v1/users?id=1
    @PutMapping
    public EntityModel<User> updateUser(@RequestParam Long id, @RequestBody User updatedUser) {
        User user = userRepository.findById(id)
                .map(u -> {
                    u.setUsername(updatedUser.getUsername());
                    u.setEmail(updatedUser.getEmail());
                    u.setPassword(updatedUser.getPassword());
                    u.setImage(updatedUser.getImage());
                    u.setCreation(updatedUser.getCreation());
                    return userRepository.save(u);
                }).orElseThrow(() -> new ResourceNotFoundException("Utilisateur non trouvé : " + id));
        return assembler.toModel(user);
    }

    // DELETE /api/v1/users?id=1
    @DeleteMapping
    public void deleteUser(@RequestParam Long id) {
        if (!userRepository.existsById(id))
            throw new ResourceNotFoundException("Utilisateur non trouvé : " + id);
        userRepository.deleteById(id);
    }
}