XFEEDToolBox

using XFEEDToolBox.Core.Models;

namespace XFEEDToolBox.Core.Planning;

public static class ShipPadPolicy
{
    public static void RequireFits(Station station,string actualShipType,LandingPad manual=LandingPad.Unknown)
    {
        var actual=RequiredPad(actualShipType);
        if(actual==LandingPad.Unknown)throw new InvalidOperationException("实际船型尺寸尚未确认，已停止执行。");
        var required=(LandingPad)Math.Max((int)manual,(int)actual);var available=StationSourcePolicy.EffectiveMaxLandingPad(station);
        if(available==LandingPad.Unknown||available<required)throw new InvalidOperationException($"{station.DisplayName} 的停机坪未确认能容纳当前飞船，已停止执行。");
    }
    // Derived from the 49 fdname/name/class entries in the bundled Outfitting/Edsy/eddb.js.
    // Pinned EDSY commit: 1fafc5d9f2d07e2e92443657c83d0c65b897bb00 (2026-10-20).
    // Source SHA-256: e1eb8d9f28745a8a745fa473bd1ccbb4b636aaedcd74cc23cfad9484086873d5.
    // edsy.js renders ship.class with '?SML'; this is the hull size, not a module class.
    private static readonly IReadOnlyDictionary<string, LandingPad> Pads = CreatePads();

    public static LandingPad RequiredPad(string? actualShipType) =>
        Pads.TryGetValue(Normalize(actualShipType), out var pad) ? pad : LandingPad.Unknown;

    // A manual preference or advisory value can increase the requirement, never reduce
    // the verified hull requirement. Callers must reject an unresolved actual hull when
    // verified ship compatibility is mandatory; Unknown is not evidence of a small hull.
    public static LandingPad EffectiveRequiredPad(LandingPad manual, LandingPad advisory, string? actualShipType) =>
        (LandingPad)Math.Max(Math.Max((int)manual, (int)advisory), (int)RequiredPad(actualShipType));

    private static IReadOnlyDictionary<string, LandingPad> CreatePads()
    {
        (string Type, string Name, LandingPad Pad)[] ships =
        [
            ("SideWinder", "Sidewinder", LandingPad.Small),
            ("Eagle", "Eagle", LandingPad.Small),
            ("Hauler", "Hauler", LandingPad.Small),
            ("Adder", "Adder", LandingPad.Small),
            ("Empire_Eagle", "Imperial Eagle", LandingPad.Small),
            ("Viper", "Viper Mk III", LandingPad.Small),
            ("CobraMkIII", "Cobra Mk III", LandingPad.Small),
            ("Viper_MkIV", "Viper Mk IV", LandingPad.Small),
            ("DiamondBack", "Diamondback Scout", LandingPad.Small),
            ("CobraMkIV", "Cobra Mk IV", LandingPad.Small),
            ("Type6", "Type-6 Transporter", LandingPad.Medium),
            ("Dolphin", "Dolphin", LandingPad.Small),
            ("DiamondBackXL", "Diamondback Explorer", LandingPad.Small),
            ("Empire_Courier", "Imperial Courier", LandingPad.Small),
            ("Independant_Trader", "Keelback", LandingPad.Medium),
            ("Asp_Scout", "Asp Scout", LandingPad.Medium),
            ("Vulture", "Vulture", LandingPad.Small),
            ("Asp", "Asp Explorer", LandingPad.Medium),
            ("Federation_Dropship", "Federal Dropship", LandingPad.Medium),
            ("Type7", "Type-7 Transporter", LandingPad.Large),
            ("TypeX", "Alliance Chieftain", LandingPad.Medium),
            ("Federation_Dropship_MkII", "Federal Assault Ship", LandingPad.Medium),
            ("Empire_Trader", "Imperial Clipper", LandingPad.Large),
            ("TypeX_2", "Alliance Crusader", LandingPad.Medium),
            ("TypeX_3", "Alliance Challenger", LandingPad.Medium),
            ("Federation_Gunship", "Federal Gunship", LandingPad.Medium),
            ("Krait_Light", "Krait Phantom", LandingPad.Medium),
            ("Krait_MkII", "Krait Mk II", LandingPad.Medium),
            ("Orca", "Orca", LandingPad.Large),
            ("FerDeLance", "Fer-de-Lance", LandingPad.Medium),
            ("Mamba", "Mamba", LandingPad.Medium),
            ("Python", "Python", LandingPad.Medium),
            ("Type9", "Type-9 Heavy", LandingPad.Large),
            ("BelugaLiner", "Beluga Liner", LandingPad.Large),
            ("Type9_Military", "Type-10 Defender", LandingPad.Large),
            ("Anaconda", "Anaconda", LandingPad.Large),
            ("Federation_Corvette", "Federal Corvette", LandingPad.Large),
            ("Cutter", "Imperial Cutter", LandingPad.Large),
            ("Python_NX", "Python Mk II", LandingPad.Medium),
            ("Type8", "Type-8 Transporter", LandingPad.Medium),
            ("Mandalay", "Mandalay", LandingPad.Medium),
            ("CobraMkV", "Cobra Mk V", LandingPad.Small),
            ("Corsair", "Corsair", LandingPad.Medium),
            ("PantherMkII", "Panther Clipper Mk II", LandingPad.Large),
            ("LakonMiner", "Type-11 Prospector", LandingPad.Medium),
            ("Explorer_NX", "Caspian Explorer", LandingPad.Large),
            ("SmallCombat01_NX", "Kestrel Mk II", LandingPad.Small),
            ("MediumTransport01", "Lynx Highliner", LandingPad.Medium),
            ("AnacondaMkII", "Anaconda Mk II", LandingPad.Large)
        ];
        var result = new Dictionary<string, LandingPad>(StringComparer.Ordinal);
        foreach (var ship in ships)
        {
            result[Normalize(ship.Type)] = ship.Pad;
            result[Normalize(ship.Name)] = ship.Pad;
        }
        return result;
    }

    private static string Normalize(string? value) =>
        string.Concat((value ?? "").Where(char.IsLetterOrDigit)).ToLowerInvariant();
}