namespace AcDream.App.UI.Layout;

/// <summary>
/// Retail character identity display helpers for gmStatManagementUI.
/// Sources: gmStatManagementUI::UpdateCharacterInfo (0x004f0770) calls
/// AppraisalSystem::InqGenderHeritageDisplay(gender 0x71, heritage 0xBC, 0),
/// then — when CharacterTitleTable::GetCharacterTitleFromID(m_titleID)
/// resolves — AppendText(separator @data_794358) + AppendText(titleString).
/// Campaign CT slice CT4 (2026-08-24) PE-read RECOVERED the separator as a
/// single space " " (both here and for the allegiance-rank prefix below);
/// <see cref="Join"/>'s existing <c>string.Join(" ", ...)</c> already
/// matched it.
/// </summary>
/// <remarks>
/// <b>Name-line ruling (CT4, 2026-08-24; CLOSED at Campaign AS slice AS5,
/// 2026-08-25 — narrows AP-109; its FormatXp sliver survives).</b> Retail's NAME line
/// (<c>AllegianceData::GetFullName @0x005b6950</c>) prefixes an allegiance
/// RANK title ("&lt;RankTitle&gt; &lt;Name&gt;", same space separator, PE-read
/// @data_794098) when <c>AllegianceSystem::GetTitle(rank, heritage, gender)
/// @0x005b8dd0</c> resolves one. The RANK value is PropertyInt <c>0x1E</c>
/// (<c>AllegianceRank</c>) read LIVE off the qualities bundle
/// (<c>CBaseQualities::InqInt(qualities, 0x1e)</c>) — NOT
/// <see cref="AcDream.Runtime.Gameplay.RuntimeAllegianceState"/>. That state
/// class carries a numerically-equivalent rank for a DIFFERENT UI
/// (<c>SocialAllegiancePageController</c>, which has no qualities-bundle
/// access of its own); <see cref="CharacterSheetProvider.BuildSheet"/>
/// reads every other header property straight off
/// <c>props.GetInt(...)</c>, and now the rank-prefix too. The 17-function
/// <c>Get*Title</c> table (Gearknight/Tumerok author only a MALE function,
/// reused for both genders' dispatch branches; Lugian only a FEMALE one,
/// likewise reused both ways; Olthoi/OlthoiAcid excluded by the dispatch's
/// own unsigned range check) is ported verbatim at
/// <see cref="AllegianceRankTitleTable"/>, whose class remarks carry the
/// full per-function address citations and the two independently-verified
/// decomp call sites. <see cref="CharacterStatController.Bind"/>'s Name
/// label now composes through
/// <see cref="AllegianceRankTitleTable.ComposeFullName"/> via
/// <see cref="CharacterSheetProvider.BuildSheet"/>.
/// </remarks>
internal static class CharacterIdentityText
{
    public const uint GenderPropertyId = 0x71u;
    public const uint HeritageGroupPropertyId = 0xBCu;

    /// <summary>
    /// CT4 fix round (2026-08-25, BLOCKER 2): retail's <c>AppendText</c> at
    /// <c>@0x004f0990</c> appends the resolved <c>CharacterTitleTable</c>
    /// string VERBATIM — no article stripping. 26 real ACE
    /// <c>CharacterTitle</c> entries begin with "The" (e.g. "The Noob"), so
    /// the former <c>StripLeadingArticle</c> call mangled every one of them.
    /// Heritage also drops its <see cref="CharacterSheet.Race"/> fallback the
    /// same round: <c>InqGenderHeritageDisplay</c>'s third argument
    /// (creature type) is a hardcoded literal <c>0</c> at
    /// <c>@0x004f08db</c>, not sourced from any producer — retail has no
    /// "race" input to this line at all.
    /// </summary>
    public static string StatHeaderLine(CharacterSheet sheet)
    {
        if (string.IsNullOrWhiteSpace(sheet.Gender))
            return Join(sheet.Heritage, sheet.Title);
        return Join(sheet.Gender, sheet.Heritage, sheet.Title);
    }

    /// <summary>
    /// Retail: <c>AppraisalSystem::InqGenderDisplayName @0x005b47c0</c> →
    /// <c>EnumMapper::GetString(0x10000001, gender, ...)</c> →
    /// <c>DBObj::GetDIDByEnum</c> (master map category 1, EnumMapper DID
    /// <c>0x2200000A</c>) — a LIVE DAT read. This table is a hardcoded C#
    /// mechanism substitute (register row AP-235); its content is verified
    /// byte-exact against the live EnumMapper by the InstalledDat pin
    /// <c>CharacterPanelLiveDatTests.GenderHeritageDisplayNameTables_MatchTheRetailEnumMapperChain</c>.
    /// </summary>
    public static string? GenderDisplayName(int gender) => gender switch
    {
        1 => "Male",
        2 => "Female",
        _ => null,
    };

    /// <summary>
    /// Retail: <c>AppraisalSystem::InqHeritageGroupDisplayName @0x005b4710</c>
    /// hardcodes ids 2/5/0xd to "Gharu'ndim"/"Umbraen"/"Olthoi", else falls
    /// through to <c>EnumMapper::GetString(0x10000002, heritage, ...)</c> →
    /// <c>DBObj::GetDIDByEnum</c> (master map category 1, EnumMapper DID
    /// <c>0x2200000B</c>) — a LIVE DAT read whose raw entries are the
    /// internal names ("Gharundim", "Shadowbound", "OlthoiAcid" for those
    /// same three ids). This table is a hardcoded C# mechanism substitute
    /// (register row AP-235); every entry, including the ones the CT4 review
    /// flagged as unverified guesses (10 "Penumbraen", 12 "Olthoi"), is
    /// verified byte-exact against the live EnumMapper chain by
    /// <see cref="GenderDisplayName"/>'s sibling InstalledDat pin.
    /// </summary>
    public static string? HeritageGroupDisplayName(int heritageGroup) => heritageGroup switch
    {
        1 => "Aluvian",
        2 => "Gharu'ndim",
        3 => "Sho",
        4 => "Viamontian",
        5 => "Umbraen",
        6 => "Gearknight",
        7 => "Tumerok",
        8 => "Lugian",
        9 => "Empyrean",
        10 => "Penumbraen",
        11 => "Undead",
        12 => "Olthoi",
        13 => "Olthoi",
        _ => null,
    };

    /// <summary>
    /// Campaign AS slice AS2 (2026-08-25): examination window element
    /// <c>0x10000150</c> (Heritage), <c>CharExamineUI::SetAppraiseInfo
    /// @0x004B45F0</c> via <c>AppraisalSystem::InqGenderHeritageDisplay
    /// @0x005B5AE0</c>. Unlike <see cref="StatHeaderLine"/> (the
    /// stat-management panel's header, which never appends a title and has
    /// no creature-type fallback), this composes ONLY
    /// "&lt;Gender&gt; &lt;Heritage&gt;" — falling back to
    /// <paramref name="creatureTypeFallback"/> (the assessed object's
    /// creature-type display name, Int 2, resolved through the SAME
    /// EnumMapper family <see cref="CreatureDisplayNameResolver"/> already
    /// serves the monster view's own <c>0x1000014E</c> line) ONLY when
    /// <paramref name="heritageGroup"/> is exactly 0, matching retail's own
    /// integer comparison rather than "the lookup failed".
    /// </summary>
    public static string GenderHeritageDisplay(
        int gender,
        int heritageGroup,
        string? creatureTypeFallback)
    {
        string? heritage = heritageGroup == 0
            ? creatureTypeFallback
            : HeritageGroupDisplayName(heritageGroup);
        return Join(GenderDisplayName(gender), heritage);
    }

    private static string Join(params string?[] parts)
    {
        return string.Join(" ", parts
            .Where(p => !string.IsNullOrWhiteSpace(p))
            .Select(p => p!.Trim()));
    }
}