using System.Text.Json;
using Nonemm.Core;

namespace Nonemm.App.Configuration;

/// What the program remembers between runs.
public sealed record Settings
{
    public string DatabasePath { get; init; } = "";

    public int ContestNumber { get; init; }

    public StoredStation Station { get; init; } = new();

    public string ClusterHost { get; init; } = "";

    public int ClusterPort { get; init; } = 7373;

    public IReadOnlyList<string> ClusterCommands { get; init; } = [];

    public string RigctldHost { get; init; } = "127.0.0.1";

    public int RigctldPort { get; init; } = 4532;

    public bool RadioEnabled { get; init; }

    public bool ClusterEnabled { get; init; }

    public string NetworkStationName { get; init; } = "";

    public int NetworkPort { get; init; } = 12060;

    public bool NetworkEnabled { get; init; }

    public IReadOnlyList<string> NetworkPeers { get; init; } = [];

    /// `none`, `cwdaemon` or `winkeyer`.
    public string KeyerKind { get; init; } = "none";

    public string KeyerHost { get; init; } = "127.0.0.1";

    public int KeyerPort { get; init; } = 6789;

    public string KeyerSerialPort { get; init; } = "";

    public int KeyerSpeed { get; init; } = 28;

    /// The twelve function key messages, keyed F1 to F12.
    public IReadOnlyList<string> CwMessages { get; init; } = [];

    public IReadOnlyList<string> PhoneMessages { get; init; } = [];

    /// Reflection rather than a generated serializer: the generated one hands
    /// back null for every property the file leaves out instead of the value
    /// the property is declared with.
    private static readonly JsonSerializerOptions Json = new() { WriteIndented = true };

    public static Settings Load(string path)
    {
        if (!File.Exists(path))
        {
            return new Settings();
        }
        try
        {
            return JsonSerializer.Deserialize<Settings>(File.ReadAllText(path), Json) ?? new Settings();
        }
        catch (JsonException)
        {
            // a settings file that will not parse is replaced rather than
            // stopping the program before a contest
            return new Settings();
        }
    }

    public void Save(string path) =>
        File.WriteAllText(path, JsonSerializer.Serialize(this, Json));
}

/// The operator's station as it is stored, kept separate from `StationInfo` so
/// the file format does not follow every change to the domain type.
public sealed record StoredStation
{
    public string Callsign { get; init; } = "";

    public int CqZone { get; init; }

    public int ItuZone { get; init; }

    public string Continent { get; init; } = "";

    public string CountryPrefix { get; init; } = "";

    public string State { get; init; } = "";

    public string Province { get; init; } = "";

    public string ArrlSection { get; init; } = "";

    public string GridSquare { get; init; } = "";

    public string County { get; init; } = "";

    public string Name { get; init; } = "";

    public string Power { get; init; } = "";

    public string Club { get; init; } = "";

    public int Check { get; init; }

    public string Precedence { get; init; } = "A";

    public StationInfo ToStationInfo() => new()
    {
        Callsign = Callsign,
        CqZone = CqZone,
        ItuZone = ItuZone,
        Continent = Continent,
        CountryPrefix = CountryPrefix,
        State = State,
        Province = Province,
        ArrlSection = ArrlSection,
        GridSquare = GridSquare,
        County = County,
        Name = Name,
        Power = Power,
        Club = Club,
        Check = Check,
        Precedence = Precedence,
    };
}