namespace ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.PlcFamilies;

/// <summary>
///     Per-family libplctag defaults for PCCC PLCs. SLC 500 / MicroLogix / PLC-5 / LogixPccc
///     (Logix controller accessed via the PLC-5 compatibility layer — rare but real).
/// </summary>
public sealed record AbLegacyPlcFamilyProfile(
    string LibplctagPlcAttribute,
    string DefaultCipPath,
    int MaxTagBytes,
    bool SupportsStringFile,
    bool SupportsLongFile,
    bool OctalIoAddressing,
    bool SupportsFunctionFiles)
{
    public static AbLegacyPlcFamilyProfile ForFamily(AbLegacyPlcFamily family) => family switch
    {
        AbLegacyPlcFamily.Slc500 => Slc500,
        AbLegacyPlcFamily.MicroLogix => MicroLogix,
        AbLegacyPlcFamily.Plc5 => Plc5,
        AbLegacyPlcFamily.LogixPccc => LogixPccc,
        _ => Slc500,
    };

    public static readonly AbLegacyPlcFamilyProfile Slc500 = new(
        LibplctagPlcAttribute: "slc500",
        DefaultCipPath: "1,0",
        MaxTagBytes: 240,           // SLC 5/05 PCCC max packet data
        SupportsStringFile: true,   // ST file available SLC 5/04+
        SupportsLongFile: true,     // L file available SLC 5/05+
        OctalIoAddressing: false,   // SLC500 I:/O: indices are decimal in RSLogix 500
        SupportsFunctionFiles: false); // SLC500 has no function files

    public static readonly AbLegacyPlcFamilyProfile MicroLogix = new(
        LibplctagPlcAttribute: "micrologix",
        DefaultCipPath: "",         // MicroLogix 1100/1400 use direct EIP, no backplane path
        MaxTagBytes: 232,
        SupportsStringFile: true,
        SupportsLongFile: false,    // ML 1100/1200/1400 don't ship L files
        OctalIoAddressing: false,   // MicroLogix follows SLC-style decimal I/O addressing
        SupportsFunctionFiles: true); // ML 1100/1400 expose RTC/HSC/DLS/MMI/PTO/PWM/STI/EII/IOS/BHI

    public static readonly AbLegacyPlcFamilyProfile Plc5 = new(
        LibplctagPlcAttribute: "plc5",
        DefaultCipPath: "1,0",
        MaxTagBytes: 240,           // DF1 full-duplex packet limit at 264 bytes, PCCC-over-EIP caps lower
        SupportsStringFile: true,
        SupportsLongFile: false,    // PLC-5 predates L files
        OctalIoAddressing: true,    // RSLogix 5 displays I:/O: word + bit indices as octal
        SupportsFunctionFiles: false);

    /// <summary>
    ///     Logix ControlLogix / CompactLogix accessed through the legacy PCCC compatibility layer.
    ///     Rare but real — some legacy HMI integrations address Logix controllers as if they were
    ///     PLC-5 via the PCCC-passthrough mechanism.
    /// </summary>
    public static readonly AbLegacyPlcFamilyProfile LogixPccc = new(
        LibplctagPlcAttribute: "logixpccc",
        DefaultCipPath: "1,0",
        MaxTagBytes: 240,
        SupportsStringFile: true,
        SupportsLongFile: true,
        OctalIoAddressing: false,   // Logix natively uses decimal arrays even via the PCCC bridge
        SupportsFunctionFiles: false);
}

/// <summary>Which PCCC PLC family the device is.</summary>
public enum AbLegacyPlcFamily
{
    Slc500,
    MicroLogix,
    Plc5,
    LogixPccc,
}