package repository

import (
	"baron-sso-backend/internal/domain"
	"context"

	"gorm.io/gorm"
)

type UserRepository interface {
	Create(ctx context.Context, user *domain.User) error
	Update(ctx context.Context, user *domain.User) error
	FindByEmail(ctx context.Context, email string) (*domain.User, error)
	FindByID(ctx context.Context, id string) (*domain.User, error)
	FindByIDs(ctx context.Context, ids []string) ([]domain.User, error)
	ListByTenant(ctx context.Context, tenantID string) ([]domain.User, error)
	List(ctx context.Context, offset, limit int, search string) ([]domain.User, int64, error)
}

type userRepository struct {
	db *gorm.DB
}

func NewUserRepository(db *gorm.DB) UserRepository {
	return &userRepository{db: db}
}

func (r *userRepository) Create(ctx context.Context, user *domain.User) error {
	return r.db.WithContext(ctx).Create(user).Error
}

func (r *userRepository) Update(ctx context.Context, user *domain.User) error {
	return r.db.WithContext(ctx).Save(user).Error
}

func (r *userRepository) FindByEmail(ctx context.Context, email string) (*domain.User, error) {
	var user domain.User
	if err := r.db.WithContext(ctx).Preload("Tenant").Where("email = ?", email).First(&user).Error; err != nil {
		return nil, err
	}
	return &user, nil
}

func (r *userRepository) FindByID(ctx context.Context, id string) (*domain.User, error) {
	var user domain.User
	if err := r.db.WithContext(ctx).Preload("Tenant").Where("id = ?", id).First(&user).Error; err != nil {
		return nil, err
	}
	return &user, nil
}

func (r *userRepository) FindByIDs(ctx context.Context, ids []string) ([]domain.User, error) {
	var users []domain.User
	if len(ids) == 0 {
		return users, nil
	}
	if err := r.db.WithContext(ctx).Where("id IN ?", ids).Find(&users).Error; err != nil {
		return nil, err
	}
	return users, nil
}

func (r *userRepository) ListByTenant(ctx context.Context, tenantID string) ([]domain.User, error) {
	var users []domain.User
	if err := r.db.WithContext(ctx).Where("tenant_id = ?", tenantID).Find(&users).Error; err != nil {
		return nil, err
	}
	return users, nil
}

func (r *userRepository) List(ctx context.Context, offset, limit int, search string) ([]domain.User, int64, error) {
	var users []domain.User
	var total int64
	db := r.db.WithContext(ctx).Model(&domain.User{})

	if search != "" {
		searchTerm := "%" + search + "%"
		db = db.Where("email LIKE ? OR name LIKE ?", searchTerm, searchTerm)
	}

	if err := db.Count(&total).Error; err != nil {
		return nil, 0, err
	}

	if err := db.Offset(offset).Limit(limit).Find(&users).Error; err != nil {
		return nil, 0, err
	}

	return users, total, nil
}