jobtrackingapp/JobTrackerApi/Services/AppPaths.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;

namespace JobTrackerApi.Services
{
    public sealed class AppPaths
    {
        public string DataRoot { get; }
        public string AttachmentsRoot { get; }

        public AppPaths(IConfiguration cfg, IHostEnvironment env)
        {
            var dataRoot = (cfg["Data:Root"] ?? "").Trim();
            if (string.IsNullOrWhiteSpace(dataRoot)) dataRoot = env.ContentRootPath;
            if (!Path.IsPathRooted(dataRoot)) dataRoot = Path.Combine(env.ContentRootPath, dataRoot);

            Directory.CreateDirectory(dataRoot);
            DataRoot = dataRoot;

            var attachmentsRoot = (cfg["Data:AttachmentsRoot"] ?? "").Trim();
            if (string.IsNullOrWhiteSpace(attachmentsRoot)) attachmentsRoot = Path.Combine(DataRoot, "Attachments");
            if (!Path.IsPathRooted(attachmentsRoot)) attachmentsRoot = Path.Combine(env.ContentRootPath, attachmentsRoot);

            Directory.CreateDirectory(attachmentsRoot);
            AttachmentsRoot = attachmentsRoot;
        }

        public string GetDbPath(string fileName = "jobtracker.db") => Path.Combine(DataRoot, fileName);

        public string GetExportsRoot(string? configuredFolder)
        {
            var folder = (configuredFolder ?? "").Trim();
            if (string.IsNullOrWhiteSpace(folder)) return Path.Combine(DataRoot, "exports");
            return Path.IsPathRooted(folder) ? folder : Path.Combine(DataRoot, folder);
        }
    }
}