MireaBackend/Endpoint/Configuration/EnvironmentManager.cs

using System;
using System.IO;

namespace Mirea.Api.Endpoint.Configuration;

internal static class EnvironmentManager
{
    public static void LoadEnvironment(string envFile)
    {
        if (!File.Exists(envFile)) return;

        foreach (var line in File.ReadAllLines(envFile))
        {
            if (string.IsNullOrEmpty(line)) continue;

            var commentIndex = line.IndexOf('#', StringComparison.Ordinal);

            string arg = line;

            if (commentIndex != -1)
                arg = arg.Remove(commentIndex, arg.Length - commentIndex);

            var parts = arg.Split(
                '=',
                StringSplitOptions.RemoveEmptyEntries);

            if (parts.Length > 2)
                parts = [parts[0], string.Join("=", parts[1..])];

            if (parts.Length != 2)
                continue;

            Environment.SetEnvironmentVariable(parts[0].Trim(), parts[1].Trim());
        }
    }
}