using System.Collections.Generic;
using BriarQueen.Framework.Managers.Player.Data;
using UnityEngine;

namespace BriarQueen.Framework.Registries
{
    [CreateAssetMenu(menuName = "Briar Queen/Registries/Codex Registry", fileName = "Codex Registry")]
    public class CodexRegistry : ScriptableObject
    {
        [Header("Codex Entries")]
        [SerializeField]
        private List<CodexEntrySo> _bookEntries = new();

        [SerializeField]
        private List<CodexEntrySo> _puzzleClues = new();

        [SerializeField]
        private List<CodexEntrySo> _photoEntries = new();

        private Dictionary<string, CodexEntrySo> _entryLookup;

        public IReadOnlyList<CodexEntrySo> BookEntries => _bookEntries;
        public IReadOnlyList<CodexEntrySo> PuzzleClues => _puzzleClues;
        public IReadOnlyList<CodexEntrySo> PhotoEntries => _photoEntries;

        public void EnsureInitialized()
        {
            if (_entryLookup != null)
                return;

            RebuildLookup();
        }

        public void RebuildLookup()
        {
            _entryLookup = new Dictionary<string, CodexEntrySo>();

            AddEntries(_bookEntries, "Book Entries");
            AddEntries(_puzzleClues, "Puzzle Clues");
            AddEntries(_photoEntries, "Photo Entries");
        }

        private void AddEntries(List<CodexEntrySo> entries, string category)
        {
            if (entries == null)
                return;

            foreach (var entry in entries)
            {
                if (entry == null)
                    continue;

                if (string.IsNullOrWhiteSpace(entry.UniqueID))
                {
                    Debug.LogWarning(
                        $"[CodexRegistry] Skipping {category} entry '{entry.name}' because UniqueID is empty.",
                        this);
                    continue;
                }

                if (_entryLookup.ContainsKey(entry.UniqueID))
                {
                    Debug.LogError(
                        $"[CodexRegistry] Duplicate UniqueID detected: '{entry.UniqueID}' from entry '{entry.name}'.",
                        this);
                    continue;
                }

                _entryLookup.Add(entry.UniqueID, entry);
            }
        }

        public bool TryGetEntry(string entryID, out CodexEntrySo entry)
        {
            EnsureInitialized();

            if (string.IsNullOrWhiteSpace(entryID))
            {
                entry = null;
                return false;
            }

            return _entryLookup.TryGetValue(entryID, out entry);
        }

        public CodexEntrySo FindEntryByID(string entryID)
        {
            EnsureInitialized();
            return string.IsNullOrWhiteSpace(entryID) ? null : _entryLookup.GetValueOrDefault(entryID);
        }

        public IEnumerable<CodexEntrySo> GetAllEntries()
        {
            EnsureInitialized();
            return _entryLookup.Values;
        }

        public IEnumerable<string> GetAllKeys()
        {
            EnsureInitialized();
            return _entryLookup.Keys;
        }

        public IEnumerable<CodexEntrySo> GetBookEntries()
        {
            return _bookEntries;
        }

        public IEnumerable<CodexEntrySo> GetPuzzleClues()
        {
            return _puzzleClues;
        }

        public IEnumerable<CodexEntrySo> GetPhotoEntries()
        {
            return _photoEntries;
        }

#if UNITY_EDITOR
        public void SetDiscoveredEntries(
            List<CodexEntrySo> bookEntries,
            List<CodexEntrySo> puzzleClues,
            List<CodexEntrySo> photoEntries)
        {
            _bookEntries = bookEntries ?? new List<CodexEntrySo>();
            _puzzleClues = puzzleClues ?? new List<CodexEntrySo>();
            _photoEntries = photoEntries ?? new List<CodexEntrySo>();

            RebuildLookup();
        }
#endif
    }
}