// Copyright (C) 2024 Mya Pitzeruse
// SPDX-License-Identifier: MIT

package crud

import (
	"context"

	"gorm.io/gorm"
)

// UpdateFunc defines a signature that is used by Updater to return a function that can update data in the database.
type UpdateFunc[T any] func(ctx context.Context, patch T, filters ...map[string]interface{}) error

// Updater returns a function used to update information in the database.
func Updater[T any](db *gorm.DB) UpdateFunc[T] {
	prototype := new(T)

	return func(ctx context.Context, patch T, filters ...map[string]interface{}) error {
		q := Transaction(ctx, db).
			Model(prototype).
			Limit(1)

		for _, filter := range filters {
			q = q.Where(filter)
		}

		return q.Updates(patch).Error
	}
}