Umbraco-CMS/src/Umbraco.Core/Extensions/ConnectionStringExtensions.cs

// Copyright (c) Umbraco.
// See LICENSE for more details.

using System;
using Microsoft.Extensions.Configuration;
using Umbraco.Cms.Core;
using Umbraco.Cms.Core.Configuration.Models;

namespace Umbraco.Extensions
{
    public static class ConnectionStringExtensions
    {
        public static bool IsConnectionStringConfigured(this ConnectionStrings connectionString)
            => connectionString != null &&
            !string.IsNullOrWhiteSpace(connectionString.ConnectionString) &&
            !string.IsNullOrWhiteSpace(connectionString.ProviderName);

        /// <summary>
        /// Gets a connection string from configuration with placeholders replaced.
        /// </summary>
        public static string? GetUmbracoConnectionString(
            this IConfiguration configuration,
            string connectionStringName = Constants.System.UmbracoConnectionName) =>
            configuration.GetConnectionString(connectionStringName).ReplaceDataDirectoryPlaceholder();

        /// <summary>
        /// Replaces instances of the |DataDirectory| placeholder in a string with the value of AppDomain DataDirectory.
        /// </summary>
        public static string? ReplaceDataDirectoryPlaceholder(this string input)
        {
            var dataDirectory = AppDomain.CurrentDomain.GetData("DataDirectory")?.ToString();
            return input?.Replace(ConnectionStrings.DataDirectoryPlaceholder, dataDirectory);
        }
    }
}