using System;

namespace AcDream.App.UI.Layout;

/// <summary>
/// Snapshot of all character data the Character window report uses.
/// Passed to <see cref="CharacterController.Bind"/> as a provider delegate
/// so the window can be rebound to live data in GameWindow or a static
/// fixture in the UI Studio.
///
/// <para>Field names and retail property ids confirmed from
/// <c>gmCharacterInfoUI::UpdatePlayerBirthAgeDeaths</c> (0x004b8cb0),
/// <c>UpdateEnduranceInfo</c> (0x004b8eb0),
/// <c>UpdateInnateAttributeInfo</c> (0x004b87e0),
/// <c>UpdateFakeSkills</c> (0x004b8930),
/// <c>UpdateAugmentations</c> (0x004b9000), and
/// <c>UpdateLoad</c> (0x004b8a20).</para>
/// </summary>
public sealed class CharacterSheet
{
    // ── Identity ──────────────────────────────────────────────────────────────

    /// <summary>Character name (first line of the report).</summary>
    public string Name { get; init; } = string.Empty;

    /// <summary>Character level.</summary>
    public int Level { get; init; }

    /// <summary>Race string, e.g. "Aluvian". Null = omit.</summary>
    public string? Race { get; init; }

    /// <summary>Heritage string, e.g. "Aluvian Heritage". Null = omit.</summary>
    public string? Heritage { get; init; }

    /// <summary>Title string, e.g. "the Adventurer". Null = omit.</summary>
    public string? Title { get; init; }

    // ── Experience / PK  (gmStatManagementUI::UpdateExperience 0x004f0a70,
    //    UpdatePKStatus 0x004f00a0) — the Attributes-tab header strip ──────────

    /// <summary>Total accrued experience (retail PropertyInt64 1). Header value
    /// element 0x10000235 (m_pTotalXPText).</summary>
    public long TotalXp { get; init; }

    /// <summary>Experience remaining to the next level. Header value element
    /// 0x10000238 (m_pXPToLevelText).</summary>
    public long XpToNextLevel { get; init; }

    /// <summary>XP-to-next-level meter fill, 0..1 (retail (cur−base)/(cap−base)).
    /// Drives the header meter 0x10000236 (m_pXPToLevelMeter).</summary>
    public float XpFraction { get; init; }

    /// <summary>PK status display string, e.g. "Non-Player Killer". Header element
    /// 0x10000233 (m_pPKStatusText). Null = omit.</summary>
    public string? PkStatus { get; init; }

    // ── Birth / age / deaths  (UpdatePlayerBirthAgeDeaths 0x004b8cb0) ─────────

    /// <summary>Formatted birth date string (retail InqInt(0x62) → strftime).
    /// Null = omit the birth line.</summary>
    public string? BirthDate { get; init; }

    /// <summary>Formatted play-time duration (retail InqInt(0x7d) → QueryDuration).
    /// Null = omit the age line.</summary>
    public string? PlayTime { get; init; }

    /// <summary>Total deaths (retail InqInt(0x2b) = NumDeaths).</summary>
    public int Deaths { get; init; }

    // ── Vitals  (UpdateEnduranceInfo 0x004b8eb0) ─────────────────────────────

    public int HealthCurrent  { get; init; }
    public int HealthMax      { get; init; }
    public int StaminaCurrent { get; init; }
    public int StaminaMax     { get; init; }
    public int ManaCurrent    { get; init; }
    public int ManaMax        { get; init; }

    // ── Innate attributes  (UpdateInnateAttributeInfo 0x004b87e0) ────────────
    // InqAttribute order: 1,2,4,3,5,6 = Strength, Endurance, Quickness, Coordination, Focus, Self.

    public int Strength     { get; init; }
    public int Endurance    { get; init; }
    public int Quickness    { get; init; }
    public int Coordination { get; init; }
    public int Focus        { get; init; }
    public int Self         { get; init; }

    // ── Skills  (UpdateFakeSkills 0x004b8930) ────────────────────────────────
    // Retail InqInt(0xb5) = SkillCredits; InqInt(0xc0) = AvailableSkillCredits.
    // InqInt(0x18) = available skill credits — footer 0x10000245 in the Attributes tab.

    public int UnspentSkillCredits     { get; init; }
    public int SpecializedSkillCredits { get; init; }

    /// <summary>
    /// Available (unspent) skill credits shown in the Attributes tab footer State-A.
    /// Retail InqInt(0x18) — gmStatManagementUI::DisplayDefaultFooter (0x0049cde0).
    /// Element 0x10000243 (footer line-1 value in the studio's 3-line layout).
    /// </summary>
    public int SkillCredits { get; init; }

    /// <summary>
    /// Unassigned (banked) experience points.
    /// Retail InqInt64(2) — shown in footer line-2 in State-A display.
    /// Element 0x10000245 (footer line-2 value).
    /// </summary>
    public long UnassignedXp { get; init; }

    // ── Attribute raise costs (ExperienceToAttributeLevel, gmAttributeUI::PostInit) ──
    // Retail formula: ExperienceToAttributeLevel(value + 1) − ExperienceToAttributeLevel(value).
    // We store pre-computed per-attribute costs for the fixture; cost == 0 → attribute is
    // at max or not trainable (raise button ghosted/hidden).  Ordered to match AttrRows
    // (Strength, Endurance, Coordination, Quickness, Focus, Self, Health, Stamina, Mana).
    // Source: gmAttributeUI::AttributeInfoRegion::Update (0x004f1910) + CM_Train::Event_TrainAttribute.

    /// <summary>
    /// XP cost to raise each of the 9 attributes/vitals by 1, in retail display order:
    /// [0]=Strength, [1]=Endurance, [2]=Coordination, [3]=Quickness, [4]=Focus, [5]=Self,
    /// [6]=Health, [7]=Stamina, [8]=Mana.
    /// Cost 0 means the attribute is at max (raise button ghosted).
    /// </summary>
    public long[] AttributeRaiseCosts { get; init; } = Array.Empty<long>();

    // ── Augmentations  (UpdateAugmentations 0x004b9000) ─────────────────────
    // Retail InqInt(0x162) = AugmentationStat; string-switch 1..0xb.

    /// <summary>Augmentation name from the switch in UpdateAugmentations (0x004b9000),
    /// e.g. "Swords", "Two Handed Weapons". Null = "None".</summary>
    public string? AugmentationName { get; init; }

    // ── Burden / load  (UpdateLoad 0x004b8a20) ───────────────────────────────
    // Retail InqLoad + EncumbranceCapacity(Strength, AugEncumbrance).

    public int BurdenCurrent { get; init; }
    public int BurdenMax     { get; init; }
}