using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace IdleSpectator;

public sealed class CameraAInventoryResult
{
    public bool Passed;
    public string Detail = "";
    public int Total;
    public int CameraA;
    public int CameraB;
}

/// <summary>
/// Live dump of Layer A vs B fate for decisions + library dial domains.
/// Source of truth for Signal / decision promote work (never promote from memory).
/// </summary>
public static class CameraAInventoryHarness
{
    public static CameraAInventoryResult RunAudit(string outputDirectory)
    {
        var lines = new List<string>
        {
            "domain\tid\tdisplay\tlayer\tstrength\treason"
        };
        int total = 0;
        int cameraA = 0;
        int cameraB = 0;
        var summary = new StringBuilder();

        AppendDomain(
            lines,
            ref total,
            ref cameraA,
            ref cameraB,
            summary,
            "decisions",
            "decision",
            ActivityAssetCatalog.EnumerateLiveDecisionIds(),
            id => EventCatalog.Decision.GetOrFallback(id),
            id => EventCatalog.Decision.IsCameraWorthy(id)
                ? (EventCatalog.Decision.TryGetAuthoredActionPhrase(id, out _)
                    ? "signal_predicate+phrase"
                    : "signal_predicate")
                : ReasonDecisionB(id));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "spells", "spell",
            ActivityAssetCatalog.EnumerateLiveSpellIds(),
            EventCatalog.Spell.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Spell.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "powers", "power",
            ActivityAssetCatalog.EnumerateLivePowerIds(),
            EventCatalog.Power.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Power.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "items", "item",
            ActivityAssetCatalog.EnumerateLiveItemIds(),
            EventCatalog.Item.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Item.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "genes", "gene",
            ActivityAssetCatalog.EnumerateLiveGeneIds(),
            EventCatalog.Gene.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Gene.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "phenotypes", "phenotype",
            ActivityAssetCatalog.EnumerateLivePhenotypeIds(),
            EventCatalog.Phenotype.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Phenotype.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "world_laws", "worldlaw",
            ActivityAssetCatalog.EnumerateLiveWorldLawIds(),
            EventCatalog.WorldLaw.GetOrFallback,
            id => ReasonLibrary(EventCatalog.WorldLaw.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "subspecies_traits", "subspecies_trait",
            ActivityAssetCatalog.EnumerateLiveSubspeciesTraitIds(),
            EventCatalog.SubspeciesTrait.GetOrFallback,
            id => ReasonLibrary(EventCatalog.SubspeciesTrait.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "biomes", "biome",
            ActivityAssetCatalog.EnumerateLiveBiomeIds(),
            EventCatalog.Biome.GetOrFallback,
            id => ReasonLibrary(EventCatalog.Biome.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "culture_traits", "culture_trait",
            ActivityAssetCatalog.EnumerateLiveCultureTraitIds(),
            EventCatalog.CultureTrait.GetOrFallback,
            id => ReasonLibrary(EventCatalog.CultureTrait.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "religion_traits", "religion_trait",
            ActivityAssetCatalog.EnumerateLiveReligionTraitIds(),
            EventCatalog.ReligionTrait.GetOrFallback,
            id => ReasonLibrary(EventCatalog.ReligionTrait.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "clan_traits", "clan_trait",
            ActivityAssetCatalog.EnumerateLiveClanTraitIds(),
            EventCatalog.ClanTrait.GetOrFallback,
            id => ReasonLibrary(EventCatalog.ClanTrait.GetOrFallback(id)));

        AppendDomain(
            lines, ref total, ref cameraA, ref cameraB, summary,
            "language_traits", "language_trait",
            ActivityAssetCatalog.EnumerateLiveLanguageTraitIds(),
            EventCatalog.LanguageTrait.GetOrFallback,
            id => ReasonLibrary(EventCatalog.LanguageTrait.GetOrFallback(id)));

        try
        {
            if (!string.IsNullOrEmpty(outputDirectory))
            {
                Directory.CreateDirectory(outputDirectory);
                File.WriteAllLines(Path.Combine(outputDirectory, "camera-a-inventory.tsv"), lines);
                File.WriteAllText(
                    Path.Combine(outputDirectory, "camera-a-inventory-summary.txt"),
                    summary.ToString());
            }
        }
        catch
        {
            // diagnostic dump only
        }

        bool passed = total > 0 && cameraA > 0;
        return new CameraAInventoryResult
        {
            Passed = passed,
            Total = total,
            CameraA = cameraA,
            CameraB = cameraB,
            Detail = $"total={total} A={cameraA} B={cameraB} domains=13"
        };
    }

    private static void AppendDomain(
        List<string> lines,
        ref int total,
        ref int cameraA,
        ref int cameraB,
        StringBuilder summary,
        string domain,
        string displayKind,
        List<string> ids,
        Func<string, DiscreteEventEntry> getEntry,
        Func<string, string> reasonFor)
    {
        if (ids == null)
        {
            ids = new List<string>();
        }

        int a = 0;
        int b = 0;
        for (int i = 0; i < ids.Count; i++)
        {
            string id = ids[i];
            if (string.IsNullOrEmpty(id))
            {
                continue;
            }

            DiscreteEventEntry entry = getEntry(id);
            bool isA = entry != null
                       && EventCatalog.IsCameraWorthy(entry);
            string layer = isA ? "A" : "B";
            if (isA)
            {
                a++;
                cameraA++;
            }
            else
            {
                b++;
                cameraB++;
            }

            total++;
            string display = domain == "decisions"
                ? EventReason.HumanizeId(id)
                : LibraryAssetNames.DisplayName(displayKind, id);
            display = SanitizeTsv(display);
            float strength = entry != null ? entry.EventStrength : 0f;
            string reason = SanitizeTsv(reasonFor(id) ?? "");
            lines.Add(
                domain + "\t" + id + "\t" + display + "\t" + layer + "\t"
                + strength.ToString("0.#") + "\t" + reason);
        }

        summary.AppendLine(domain + "\tlive=" + ids.Count + "\tA=" + a + "\tB=" + b);
    }

    private static string ReasonLibrary(DiscreteEventEntry entry)
    {
        if (entry == null)
        {
            return "missing";
        }

        if (entry.IsFallback)
        {
            return "fallback";
        }

        return entry.CreatesInterest ? "signal" : "ambient";
    }

    private static string ReasonDecisionB(string id)
    {
        if (string.IsNullOrEmpty(id))
        {
            return "empty";
        }

        string s = id.ToLowerInvariant();
        if (s == "try_new_plot" || s.StartsWith("try_new_plot_", StringComparison.Ordinal))
        {
            return "deny_plot_intent";
        }

        if (s.Contains("start_new_civilization")
            || s.Contains("start_new_civ")
            || s.Contains("build_civ_city")
            || s.Contains("city_foundation")
            || s == "claim_land"
            || s.StartsWith("claim_land_", StringComparison.Ordinal))
        {
            return "deny_genesis_intent";
        }

        if (s.Contains("idle")
            || s.Contains("walking")
            || s.Contains("check")
            || s.Contains("wait")
            || s.Contains("sleep")
            || s.Contains("random")
            || s.Contains("play")
            || s.Contains("jump")
            || s.Contains("flip")
            || s.Contains("diet_")
            || s.Contains("move")
            || s.Contains("swim")
            || s.Contains("follow_parent")
            || s.Contains("follow_desire")
            || s.Contains("reflection")
            || s.Contains("poop"))
        {
            return "deny_fluff";
        }

        return "no_signal_token";
    }

    private static string SanitizeTsv(string value)
    {
        if (string.IsNullOrEmpty(value))
        {
            return "";
        }

        return value.Replace('\t', ' ').Replace('\n', ' ').Replace('\r', ' ');
    }
}