using System;
using System.Collections.Generic;

namespace IdleSpectator;

public sealed class WorldLogEventEntry
{
    public string Id = "";
    public float EventStrength = 40f;
    public string Category = "WorldLog";
    public bool CreatesInterest = true;
    public bool ChronicleEligible;
    public float MinWatch = 6f;
    public float MaxWatch = 28f;
    public string LabelTemplate = "{id}";
    public bool IsFallback;

    public string MakeLabel(string special1, string special2)
    {
        string a = special1 ?? "";
        string b = special2 ?? "";
        string template = string.IsNullOrEmpty(LabelTemplate) ? "{id}" : LabelTemplate;
        return template
            .Replace("{id}", Id ?? "")
            .Replace("{a}", a)
            .Replace("{b}", b)
            .Replace("{special1}", a)
            .Replace("{special2}", b);
    }

    public string MakeLabel(WorldLogMessage message)
    {
        if (message == null)
        {
            return MakeLabel("", "");
        }

        return MakeLabel(message.special1, message.special2);
    }
}

/// <summary>WorldLog dials from <c>event-catalog.json</c> <c>worldLog</c>.</summary>
public static partial class EventCatalog
{
    public static class WorldLog
    {
        private static readonly Dictionary<string, WorldLogEventEntry> Entries =
            new Dictionary<string, WorldLogEventEntry>(StringComparer.OrdinalIgnoreCase);

        private static int _appliedGeneration = -1;

        public static void InvalidateOverlays()
        {
            Entries.Clear();
            _appliedGeneration = -1;
        }

        private static void Ensure()
        {
            if (_appliedGeneration == EventCatalogConfig.Generation)
            {
                return;
            }

            _appliedGeneration = EventCatalogConfig.Generation;
            EventCatalogConfig.FillWorldLog(Entries);
        }

        public static IEnumerable<string> AuthoredIds
        {
            get
            {
                Ensure();
                return Entries.Keys;
            }
        }

        public static bool HasAuthored(string assetId)
        {
            Ensure();
            return !string.IsNullOrEmpty(assetId) && Entries.ContainsKey(assetId.Trim());
        }

        public static bool TryGet(string assetId, out WorldLogEventEntry entry)
        {
            Ensure();
            entry = null;
            if (string.IsNullOrEmpty(assetId))
            {
                return false;
            }

            return Entries.TryGetValue(assetId.Trim(), out entry);
        }

        public static WorldLogEventEntry GetOrFallback(string assetId)
        {
            if (TryGet(assetId, out WorldLogEventEntry entry))
            {
                return entry;
            }

            string id = string.IsNullOrEmpty(assetId) ? "unknown" : assetId.Trim();
            float strength = 40f;
            string category = "WorldLog";
            if (id.IndexOf("disaster", StringComparison.OrdinalIgnoreCase) >= 0)
            {
                strength = 95f;
                category = "Disaster";
            }

            return new WorldLogEventEntry
            {
                Id = id,
                EventStrength = strength,
                Category = category,
                CreatesInterest = true,
                ChronicleEligible = strength >= 65f,
                LabelTemplate = "{id}: {a}",
                MinWatch = strength >= 90f ? 8f : 6f,
                MaxWatch = strength >= 90f ? 35f : 28f,
                IsFallback = true
            };
        }

        public static bool TryGetEventStrength(string assetId, out float eventStrength)
        {
            WorldLogEventEntry entry = GetOrFallback(assetId);
            eventStrength = entry.EventStrength;
            return !string.IsNullOrEmpty(assetId);
        }

        public static string MakeLabel(WorldLogMessage message)
        {
            if (message == null)
            {
                return "event";
            }

            return GetOrFallback(message.asset_id).MakeLabel(message);
        }
    }
}