package repository

import (
	"homework-manager/internal/database"
	"homework-manager/internal/models"

	"gorm.io/gorm"
)

type UserRepository struct {
	db *gorm.DB
}

func NewUserRepository() *UserRepository {
	return &UserRepository{db: database.GetDB()}
}

func (r *UserRepository) Create(user *models.User) error {
	return r.db.Create(user).Error
}

func (r *UserRepository) FindByID(id uint) (*models.User, error) {
	var user models.User
	err := r.db.First(&user, id).Error
	if err != nil {
		return nil, err
	}
	return &user, nil
}

func (r *UserRepository) FindByEmail(email string) (*models.User, error) {
	var user models.User
	err := r.db.Where("email = ?", email).First(&user).Error
	if err != nil {
		return nil, err
	}
	return &user, nil
}

func (r *UserRepository) FindAll() ([]models.User, error) {
	var users []models.User
	err := r.db.Find(&users).Error
	return users, err
}

func (r *UserRepository) Update(user *models.User) error {
	return r.db.Save(user).Error
}

func (r *UserRepository) Delete(id uint) error {
	if err := r.db.Unscoped().Where("user_id = ?", id).Delete(&models.Assignment{}).Error; err != nil {
		return err
	}
	return r.db.Unscoped().Delete(&models.User{}, id).Error
}

func (r *UserRepository) Count() (int64, error) {
	var count int64
	err := r.db.Model(&models.User{}).Count(&count).Error
	return count, err
}