using AcDream.Content;
using DatReaderWriter;
using DatReaderWriter.Options;

namespace AcDream.Content.Tests;

/// <summary>
/// Pins the school-to-foci-WCID map against the installed retail DATs.
/// </summary>
/// <remarks>
/// <para>
/// Retail <c>SpellComponentTable::SchoolOfMagic2WCID @ 0x005BC1F0</c> resolves
/// master map → category <c>0x10000001</c> → key <c>4</c> → the school→WCID
/// <see cref="DatReaderWriter.DBObjs.EnumIDMap"/> (<c>0x27000003</c> in the
/// EoR dats). The catalog used to pass the decomp's <c>0x28</c> — the
/// EnumIDMap DBTYPE tag on that call — as the lookup category, which resolved
/// nothing: the map loaded EMPTY, a carried focus was never detected, and
/// every cast demanded the full component list while retail (and the spell
/// examine window there) asked only for scarabs and tapers.
/// </para>
/// <para>
/// The expected WCIDs are EXTERNAL constants — ACE's
/// <c>Player_Spells.FociWCIDs</c>, the server-side authority acdream must
/// agree with — deliberately not derived from the code under test, so an
/// empty or wrongly-resolved map cannot satisfy this vacuously.
/// </para>
/// </remarks>
[Trait("Lane", "InstalledDat")]
public sealed class InstalledMagicCatalogFociTests
{
    [Fact]
    public void FociMap_ResolvesEveryRetailSchoolToAcesFociWcid()
    {
        string? datDir = ContentConformanceDats.ResolveDatDir();
        if (datDir is null)
            Assert.Fail("Lane=InstalledDat requires an installed retail DAT directory; see docs/release-gate.md.");

        using var dats = new DatCollection(datDir, DatAccessType.Read);
        using var adapter = new DatCollectionAdapter(dats);
        MagicCatalog catalog = MagicCatalog.Load(adapter);

        // ACE Player_Spells.FociWCIDs: War=Strife, Life=Verdancy,
        // Item=Artifice, Creature=Enchantment, Void=Shadow.
        Assert.Equal(15271u, catalog.MagicPackWcidForSchool(1u));
        Assert.Equal(15270u, catalog.MagicPackWcidForSchool(2u));
        Assert.Equal(15269u, catalog.MagicPackWcidForSchool(3u));
        Assert.Equal(15268u, catalog.MagicPackWcidForSchool(4u));
        Assert.Equal(43173u, catalog.MagicPackWcidForSchool(5u));
    }
}