package co.jp.springp0421.dogdemo.controller;

import co.jp.springp0421.dogdemo.common.ApiResponse;
import co.jp.springp0421.dogdemo.dto.LoginDto;
import co.jp.springp0421.dogdemo.dto.RegistrationDto;
import co.jp.springp0421.dogdemo.dto.UserDto;
import co.jp.springp0421.dogdemo.entity.UserEntity;
import co.jp.springp0421.dogdemo.service.JwtService;
import co.jp.springp0421.dogdemo.service.UserService;
import jakarta.validation.Valid;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

@RestController
public class UserController {

    private final UserService userService;
    private final AuthenticationManager authenticationManager;
    private final JwtService jwtService;

    public UserController(UserService userService, AuthenticationManager authenticationManager, JwtService jwtService) {
        this.userService = userService;
        this.authenticationManager = authenticationManager;
        this.jwtService = jwtService;
    }

    @PostMapping("/api/user/register")
    public ResponseEntity<ApiResponse<UserDto>> registerUser(@Valid @RequestBody RegistrationDto registrationDto) {

        UserEntity registeredUser = userService.registerNewUser(registrationDto);

        UserDto userDto = new UserDto();

        userDto.setEmail(registeredUser.getEmail());
        userDto.setName(registeredUser.getName());

        return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.success(userDto));
    }

    @PostMapping("/api/user/login")
    public ResponseEntity<ApiResponse<Map<String, String>>> authenticateUser(@Valid @RequestBody LoginDto loginDto) {

        Authentication authentication = authenticationManager.authenticate(
                new UsernamePasswordAuthenticationToken(loginDto.getEmail(), loginDto.getPassword())
        );
        SecurityContextHolder.getContext().setAuthentication(authentication);
        UserDetails userDetails = (UserDetails) authentication.getPrincipal();

        String jwtToken = jwtService.generateToken(userDetails);

        Map<String, String> tokenResponse = new HashMap<>();
        tokenResponse.put("token", jwtToken);

        return ResponseEntity.ok(ApiResponse.success(tokenResponse));
    }
}