using System.IO;

namespace Housing.Services;

public sealed class EquipmentMeasurementSettings
{
    public int Timeout { get; set; } = 5000;
    public int SettleMilliseconds { get; set; } = 300;
    public ScpiChannelSettings Voltage { get; set; } = new();
    public ScpiChannelSettings Current { get; set; } = new();

    public static EquipmentMeasurementSettings Load(string filePath)
    {
        if (!File.Exists(filePath))
        {
            throw new FileNotFoundException("Hardware.ini 파일을 찾을 수 없습니다.", filePath);
        }

        var values = IniFile.LoadSection(filePath, "Equipment");
        return new EquipmentMeasurementSettings
        {
            Timeout = GetInt(values, "Timeout", 5000),
            SettleMilliseconds = GetInt(values, "SettleMilliseconds", 300),
            Voltage = LoadChannel(values, "Voltage", "MEAS:VOLT:DC?", "34460,34461,34465,34470,3446,3447"),
            Current = LoadChannel(values, "Current", "MEAS:CURR? CH1", "E362")
        };
    }

    private static ScpiChannelSettings LoadChannel(
        Dictionary<string, string> values,
        string prefix,
        string defaultReadCommand,
        string defaultIdnMatch)
    {
        return new ScpiChannelSettings
        {
            Connection = GetString(values, prefix + "Connection", string.Empty),
            ResourceName = GetString(values, prefix + "Resource", string.Empty),
            IdnMatch = GetString(values, prefix + "IdnMatch", defaultIdnMatch),
            Host = GetString(values, prefix + "Host", string.Empty),
            Port = GetInt(values, prefix + "Port", 5025),
            PortName = GetString(values, prefix + "PortName", string.Empty),
            BaudRate = GetInt(values, prefix + "BaudRate", 115200),
            SetupCommand = GetString(values, prefix + "SetupCommand", string.Empty),
            ReadCommand = GetString(values, prefix + "ReadCommand", defaultReadCommand)
        };
    }

    private static string GetString(Dictionary<string, string> values, string key, string defaultValue)
    {
        return values.TryGetValue(key, out var value) && !string.IsNullOrWhiteSpace(value)
            ? value.Trim()
            : defaultValue;
    }

    private static int GetInt(Dictionary<string, string> values, string key, int defaultValue)
    {
        return values.TryGetValue(key, out var value) && int.TryParse(value, out var result)
            ? result
            : defaultValue;
    }
}

public sealed class ScpiChannelSettings
{
    public string Connection { get; set; } = string.Empty;
    public string ResourceName { get; set; } = string.Empty;
    public string IdnMatch { get; set; } = string.Empty;
    public string Host { get; set; } = string.Empty;
    public int Port { get; set; } = 5025;
    public string PortName { get; set; } = string.Empty;
    public int BaudRate { get; set; } = 115200;
    public string SetupCommand { get; set; } = string.Empty;
    public string ReadCommand { get; set; } = string.Empty;

    public string[] GetIdnMatches()
    {
        return IdnMatch
            .Split(',', ';')
            .Select(value => value.Trim())
            .Where(value => !string.IsNullOrWhiteSpace(value))
            .ToArray();
    }
}