package com.lions.dev.service;

import com.lions.dev.entity.notification.Notification;
import com.lions.dev.entity.users.Users;
import com.lions.dev.exception.UserNotFoundException;
import com.lions.dev.repository.EventsRepository;
import com.lions.dev.repository.NotificationRepository;
import com.lions.dev.repository.UsersRepository;
import io.quarkus.test.InjectMock;
import io.quarkus.test.junit.QuarkusTest;
import jakarta.inject.Inject;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.DisplayName;

import java.util.Collections;
import java.util.List;
import java.util.UUID;

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.*;
import static org.mockito.Mockito.*;

@QuarkusTest
class NotificationServiceTest {

  @Inject
  NotificationService notificationService;

  @InjectMock
  NotificationRepository notificationRepository;

  @InjectMock
  UsersRepository usersRepository;

  @InjectMock
  EventsRepository eventsRepository;

  @Test
  @DisplayName("getNotificationsByUserId avec utilisateur existant retourne la liste")
  void getNotificationsByUserId_userExists_returnsList() {
    UUID userId = UUID.randomUUID();
    Users user = new Users();
    user.setId(userId);
    Notification notif = new Notification("Titre", "Message", "event", user);

    when(usersRepository.findById(userId)).thenReturn(user);
    when(notificationRepository.findByUserId(userId)).thenReturn(List.of(notif));

    List<Notification> result = notificationService.getNotificationsByUserId(userId);

    assertNotNull(result);
    assertEquals(1, result.size());
    assertEquals("Titre", result.get(0).getTitle());
    verify(usersRepository).findById(userId);
    verify(notificationRepository).findByUserId(userId);
  }

  @Test
  @DisplayName("getNotificationsByUserId avec utilisateur inconnu lance UserNotFoundException")
  void getNotificationsByUserId_userNotFound_throws() {
    UUID userId = UUID.randomUUID();
    when(usersRepository.findById(userId)).thenReturn(null);

    assertThrows(UserNotFoundException.class, () ->
        notificationService.getNotificationsByUserId(userId));
    verify(notificationRepository, never()).findByUserId(any());
  }

  @Test
  @DisplayName("createNotification avec données valides persiste et retourne la notification")
  void createNotification_validData_persistsAndReturns() {
    UUID userId = UUID.randomUUID();
    UUID eventId = UUID.randomUUID();
    Users user = new Users();
    user.setId(userId);

    when(usersRepository.findById(userId)).thenReturn(user);

    Notification created = notificationService.createNotification(
        "Rappel", "L'événement commence bientôt", "reminder", userId, eventId);

    assertNotNull(created);
    assertEquals("Rappel", created.getTitle());
    assertEquals("reminder", created.getType());
  }

  @Test
  @DisplayName("createNotification avec userId inconnu lance UserNotFoundException")
  void createNotification_unknownUser_throws() {
    UUID userId = UUID.randomUUID();
    when(usersRepository.findById(userId)).thenReturn(null);

    assertThrows(UserNotFoundException.class, () ->
        notificationService.createNotification("T", "M", "event", userId, null));
  }

  @Test
  @DisplayName("countUnreadNotifications avec utilisateur existant retourne le compte")
  void countUnreadNotifications_userExists_returnsCount() {
    UUID userId = UUID.randomUUID();
    Users user = new Users();
    user.setId(userId);
    when(usersRepository.findById(userId)).thenReturn(user);
    when(notificationRepository.countUnreadByUserId(userId)).thenReturn(3L);

    long count = notificationService.countUnreadNotifications(userId);

    assertEquals(3L, count);
    verify(notificationRepository).countUnreadByUserId(userId);
  }

  @Test
  @DisplayName("countUnreadNotifications avec utilisateur inconnu lance UserNotFoundException")
  void countUnreadNotifications_userNotFound_throws() {
    UUID userId = UUID.randomUUID();
    when(usersRepository.findById(userId)).thenReturn(null);

    assertThrows(UserNotFoundException.class, () ->
        notificationService.countUnreadNotifications(userId));
  }

  @Test
  @DisplayName("getNotificationsByUserIdWithPagination avec utilisateur existant retourne la page")
  void getNotificationsByUserIdWithPagination_userExists_returnsPage() {
    UUID userId = UUID.randomUUID();
    Users user = new Users();
    user.setId(userId);
    when(usersRepository.findById(userId)).thenReturn(user);
    when(notificationRepository.findByUserIdWithPagination(userId, 0, 10))
        .thenReturn(Collections.emptyList());

    List<Notification> result = notificationService.getNotificationsByUserIdWithPagination(userId, 0, 10);

    assertNotNull(result);
    assertTrue(result.isEmpty());
    verify(notificationRepository).findByUserIdWithPagination(userId, 0, 10);
  }
}