package repository

import (
	"zeromesh/internal/database"
	"zeromesh/internal/model"
)

type UserRepo struct {
	db *database.DB
}

func NewUserRepo(db *database.DB) *UserRepo {
	return &UserRepo{db: db}
}

func (r *UserRepo) FindByUsername(username string) (*model.User, error) {
	var user model.User
	err := r.db.Where("username = ?", username).First(&user).Error
	if err != nil {
		return nil, err
	}
	return &user, nil
}

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

func (r *UserRepo) Create(user *model.User) error {
	return r.db.Create(user).Error
}

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

func (r *UserRepo) HasAdmin() (bool, error) {
	var count int64
	err := r.db.Model(&model.User{}).Where("role = ?", "admin").Count(&count).Error
	return count > 0, err
}

func (r *UserRepo) UpdatePassword(id uint, hashed string) error {
	return r.db.Model(&model.User{}).Where("id = ?", id).Update("password", hashed).Error
}

func (r *UserRepo) List(offset, limit int) ([]model.User, error) {
	var users []model.User
	err := r.db.Offset(offset).Limit(limit).Order("id desc").Find(&users).Error
	return users, err
}