using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using System;
using DotNetEnv;

namespace Inventory.Core
{
    /// <summary>
    /// Sets up application secrets from .env file in Development or HashiCorp Vault in Production.
    /// </summary>
    public static class EnvironmentBuilder
    {
        // Define the keys for your secrets
        private const string _dbConnectionString = "DB_CONNECTION_STRING";
        private const string _slurpitUrl = "SLURPIT_URL";
        private const string _slurpitApiKey = "SLURPIT_API_KEY";
        private const string _updateIntervalMinutes = "UPDATE_INTERVAL_MINUTES";

        /// <summary>
        /// Loads secrets into static properties based on the hosting environment.
        /// </summary>
        public static void SetupEnvironment(IHostEnvironment environment)
        {
            // Load secrets from the .env file.
            // Env.TraversePath() looks for .env in the current directory and parent directories.
            // This is suitable for both development and when the agent is installed.
            // The .env file should be placed in the same directory as the executable (e.g., Agent, AdminTool).
            Env.TraversePath().Load();
            
            // Assign to static properties
            Secrets.DbConnectionString = Environment.GetEnvironmentVariable(_dbConnectionString);
            Secrets.SlurpitUrl = Environment.GetEnvironmentVariable(_slurpitUrl);
            Secrets.SlurpitApiKey = Environment.GetEnvironmentVariable(_slurpitApiKey);
            
            int.TryParse(Environment.GetEnvironmentVariable(_updateIntervalMinutes), out var interval);
            Secrets.UpdateIntervalMinutes = interval > 0 ? interval : 60; // Default to 60 minutes
        }
    }

    /// <summary>
    /// A static class to hold application secrets.
    /// </summary>
    public static class Secrets
    {
        public static string? DbConnectionString { get; set; }
        public static string? SlurpitUrl { get; set; }
        public static string? SlurpitApiKey { get; set; }
        public static int UpdateIntervalMinutes { get; set; }
    }
}