using System;
using System.Text;
using BrewMonster.Network;
using CSNetwork;
using CSNetwork.GPDataType;
using CSNetwork.Protocols;
using CSNetwork.Protocols.RPCData;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using BrewMonster.Scripts;
using BrewMonster.PerfectWorld.Scripts.Utility.ChatFilter;

namespace BrewMonster.UI
{
    /// <summary>
    /// UI screen for creating a new character.
    /// Equivalent to CDlgCreateGenderName + CDlgCreateProfession in C++.
    /// </summary>
    public class CreateCharacterScreen : MonoBehaviour
    {
        [SerializeField] private GameObject professionSelectionPanel;
        [SerializeField] private Button[] professionButtons;
        [SerializeField] private Button maleGenderButton;
        [SerializeField] private Button femaleGenderButton;
        [SerializeField] private TMP_InputField nameInputField;
        [SerializeField] private TMP_Text validationMessageText;
        [SerializeField] private Button confirmButton;
        [SerializeField] private Button cancelButton;
        [SerializeField] private Button backButton;
        [SerializeField] private CDlgMessageBox messageBoxPrefab;
        private CDlgMessageBox _messageBoxInstance;

        private int _currentProfession = -1;
        private int _currentGender = -1;

        private Action<RoleInfo> _onCreateComplete;
        private Action _onCancel;

        // Static array matching s_bShowMale[NUM_PROFESSION] from original C++ code (EC_ProfConfigs.cpp)
        // true = show male, false = show female
        private static readonly bool[] s_bShowMale = new bool[]
        {
            true,   // 0: kiem khach (nhan toc)
            false,  // 1: phap su (nhan toc)
            false,  // 2: vu su (tich toc)
            false,  // 3: tien thu (thu toc)
            true,   // 4: than thu (thu toc)
            true,   // 5: thich khach (tich toc)
            true,   // 6: vu mang (vu toc)
            false,  // 7: vu linh (vu toc)
            true,   // 8: kiem linh (linh toc)
            false,  // 9: mi linh (linh toc)
            true,   // 10: da anh (long toc)
            false,  // 11: nguyet tien (long toc)
        };

        private void Start()
        {
            if (confirmButton != null)
                confirmButton.onClick.AddListener(OnConfirmClicked);
            if (cancelButton != null)
                cancelButton.onClick.AddListener(OnCancelClicked);
            if (backButton != null)
                backButton.onClick.AddListener(OnCancelClicked);

            if (maleGenderButton != null)
                maleGenderButton.onClick.AddListener(() => OnGenderSelected(GENDER.GENDER_MALE));
            if (femaleGenderButton != null)
                femaleGenderButton.onClick.AddListener(() => OnGenderSelected(GENDER.GENDER_FEMALE));

            // Setup profession buttons
            if (professionButtons != null)
            {
                for (int i = 0; i < professionButtons.Length && i < 12; i++)
                {
                    int prof = i; // Capture for closure
                    if (professionButtons[i] != null)
                        professionButtons[i].onClick.AddListener(() => OnProfessionSelected(prof));
                }
            }

            if (nameInputField != null)
            {
                nameInputField.onSubmit.AddListener((text) => { if (CanConfirm()) OnConfirmClicked(); });
                nameInputField.onValueChanged.AddListener((text) => ClearValidationError());
            }
        }

        public void Show(Action<RoleInfo> onCreateComplete, Action onCancel)
        {
            _onCreateComplete = onCreateComplete;
            _onCancel = onCancel;
            _currentProfession = -1;
            _currentGender = -1;

            gameObject.SetActive(true);

            if (nameInputField != null)
            {
                nameInputField.text = "";
                nameInputField.Select();
            }

            ClearValidationError();

            UpdateConfirmButtonState();
        }

        public void Hide()
        {
            gameObject.SetActive(false);
        }

        private void OnProfessionSelected(int profession)
        {
            if (profession < 0 || profession >= (int)Profession.NUM_PROFESSION)
                return;

            _currentProfession = profession;

            // Update UI to show selected profession
            if (professionButtons != null)
            {
                for (int i = 0; i < professionButtons.Length; i++)
                {
                    if (professionButtons[i] != null)
                    {
                        // Visual feedback for selected profession
                        var colors = professionButtons[i].colors;
                        colors.normalColor = (i == profession) ? Color.yellow : Color.white;
                        professionButtons[i].colors = colors;
                    }
                }
            }

            // Auto-select gender based on profession (matching original C++ logic from EC_ProfConfigs.cpp)
            // This matches the s_bShowMale array in CanShowOnCreate function
            int autoGender = GetDefaultGenderForProfession(profession);
            OnGenderSelected(autoGender);

            UpdateConfirmButtonState();
        }

        /// <summary>
        /// Gets the default gender for a profession based on the original C++ logic.
        /// Matches the s_bShowMale array from EC_ProfConfigs.cpp CanShowOnCreate function.
        /// </summary>
        private int GetDefaultGenderForProfession(int profession)
        {
            if (profession >= 0 && profession < s_bShowMale.Length)
            {
                return s_bShowMale[profession] ? GENDER.GENDER_MALE : GENDER.GENDER_FEMALE;
            }

            // Fallback to male if profession is invalid
            return GENDER.GENDER_MALE;
        }

        private void OnGenderSelected(int gender)
        {
            if (gender != GENDER.GENDER_MALE && gender != GENDER.GENDER_FEMALE)
                return;

            _currentGender = gender;

            // Update UI to show selected gender
            if (maleGenderButton != null)
            {
                var colors = maleGenderButton.colors;
                colors.normalColor = (gender == GENDER.GENDER_MALE) ? Color.yellow : Color.white;
                maleGenderButton.colors = colors;
            }

            if (femaleGenderButton != null)
            {
                var colors = femaleGenderButton.colors;
                colors.normalColor = (gender == GENDER.GENDER_FEMALE) ? Color.yellow : Color.white;
                femaleGenderButton.colors = colors;
            }

            UpdateConfirmButtonState();
        }

        private void OnConfirmClicked()
        {
            if (!CanConfirm())
                return;

            if (!TryGetValidatedCharacterName(out string characterName))
            {
                return;
            }

            // Create RoleInfo using helper method
            RoleInfo roleInfo = GameSession.CreateNewRoleInfo(characterName, _currentProfession, _currentGender);

            // Create role via network
            Debug.Log($"Calling CreateRoleAsync for character: {characterName}, profession: {_currentProfession}, gender: {_currentGender}");
            UnityGameSession.CreateRoleAsync(roleInfo, new Octets(), (createdRole) =>
            {
                if (createdRole != null)
                {
                    Debug.Log($"Character created successfully: {characterName}, RoleID: {createdRole.roleid}");
                    Hide();
                    _onCreateComplete?.Invoke(createdRole);
                }
                else
                {
                    Debug.LogError($"Failed to create character: {characterName}. Check GameSession logs for error details.");
                    // TODO: Show error message to user
                }
            });
        }

        private void OnCancelClicked()
        {
            Hide();
            _onCancel?.Invoke();
        }

        private bool TryGetValidatedCharacterName(out string characterName)
        {
            characterName = nameInputField != null ? nameInputField.text.Trim() : string.Empty;
            if (string.IsNullOrWhiteSpace(characterName))
            {
                ShowValidationError("Character name cannot be empty.");
                return false;
            }

            if (ChatFilterService.ContainsBadWord(characterName))
            {
                ShowValidationError("Character name contains inappropriate words.");
                return false;
            }

            ClearValidationError();
            return true;
        }

        private void ShowValidationError(string message)
        {
            if (validationMessageText != null)
            {
                validationMessageText.text = message;
                validationMessageText.gameObject.SetActive(true);
            }

            var dialog = GetOrCreateMessageBoxInstance();
            if (dialog != null)
            {
                dialog.ShowMessageBoxYes("Invalid Character Name", message, null, null);
            }
            else
            {
                CECUIManager.Instance?.ShowMessageBoxYes("Invalid Character Name", message, null, null);
            }
            Debug.LogWarning(message);
        }

        private CDlgMessageBox GetOrCreateMessageBoxInstance()
        {
            if (_messageBoxInstance != null)
            {
                return _messageBoxInstance;
            }

            if (messageBoxPrefab == null)
            {
                return null;
            }

            var canvas = GetComponentInParent<Canvas>();
            if (canvas == null)
            {
                return null;
            }

            _messageBoxInstance = Instantiate(messageBoxPrefab, canvas.transform);
            _messageBoxInstance.gameObject.SetActive(false);
            return _messageBoxInstance;
        }

        private void ClearValidationError()
        {
            if (validationMessageText != null)
            {
                validationMessageText.text = string.Empty;
                validationMessageText.gameObject.SetActive(false);
            }
        }

        private bool CanConfirm()
        {
            if (_currentProfession < 0 || _currentProfession >= (int)Profession.NUM_PROFESSION)
                return false;

            if (_currentGender != GENDER.GENDER_MALE && _currentGender != GENDER.GENDER_FEMALE)
                return false;

            string name = nameInputField != null ? nameInputField.text : "";
            if (string.IsNullOrWhiteSpace(name))
                return false;

            return true;
        }

        private void UpdateConfirmButtonState()
        {
            if (confirmButton != null)
            {
                confirmButton.interactable = CanConfirm();
            }
        }

        private void Update()
        {
            // Update confirm button state in case name changes
            if (nameInputField != null && nameInputField.isFocused)
            {
                UpdateConfirmButtonState();
            }
        }
    }
}