using System.Diagnostics.CodeAnalysis;
using System.Text.Json;
using InnovEnergy.Lib.Utils;
using static System.Text.Json.JsonSerializer;

namespace InnovEnergy.App.GrowattCommunication.SystemConfig;

public class Config //TODO: let IE choose from config files (Json) and connect to GUI
{
    private static String DefaultConfigFilePath => Path.Combine(Environment.CurrentDirectory, "config.json");
    private static DateTime DefaultDatetime => new(2024, 03, 11, 09, 00, 00); 
    
    private static readonly JsonSerializerOptions JsonOptions = new() { WriteIndented = true };

    public required Double                MinSoc                             { get; set; }
    public required Double                GridSetPoint                       { get; set; } 
    public required Double                MaximumDischargingCurrent          { get; set; } 
    public required Double                MaximumChargingCurrent             { get; set; } 

    public required S3Config?             S3                                 { get; set; }

 
    private static String? LastSavedData { get; set; }

    public static Config Default => new()
    {
        MinSoc                                  = 20,
        GridSetPoint                            = 0,
        MaximumChargingCurrent                  = 180,
        MaximumDischargingCurrent               = 180,    
        S3 = new()
        {
            Bucket      = "1-3e5b3069-214a-43ee-8d85-57d72000c19d",
            Region      = "sos-ch-dk-2",
            Provider    = "exo.io",
            Key         = "EXObb5a49acb1061781761895e7",
            Secret      = "sKhln0w8ii3ezZ1SJFF33yeDo8NWR1V4w2H0D4-350I",
            ContentType = "text/plain; charset=utf-8"
        }
    };

    public void Save(String? path = null)
    {
        var configFilePath = path ?? DefaultConfigFilePath;
        
        try
        {
            var jsonString = Serialize(this, JsonOptions);

            if (LastSavedData == jsonString)
                return;
            
            LastSavedData = jsonString;

            File.WriteAllText(configFilePath, jsonString);
        }
        catch (Exception e)
        {
            $"Failed to write config file {configFilePath}\n{e}".WriteLine();
            throw;
        }
    }

    public static Config Load(String? path = null)
    {
        var configFilePath = path ?? DefaultConfigFilePath;
        try
        {
            var jsonString = File.ReadAllText(configFilePath);
            return Deserialize<Config>(jsonString)!;
        }
        catch (Exception e)
        {
            $"Failed to read config file {configFilePath}, using default config\n{e}".WriteLine();
            return Default;
        }
    }
    
    public static async Task<Config> LoadAsync(String? path = null)
    {
        var configFilePath = path ?? DefaultConfigFilePath;
        try
        {
            var jsonString = await File.ReadAllTextAsync(configFilePath);
            return Deserialize<Config>(jsonString)!;
        }
        catch (Exception e)
        {
            Console.WriteLine($"Couldn't read config file {configFilePath}, using default config");
            e.Message.WriteLine();
            return Default;
        }
    }
}