using Simulator.Data;
using System;
using System.Globalization;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace Simulator.UI
{
    /// <summary>
    /// 시뮬레이션 목록의 개별 행 View
    /// Row Prefab에 붙여서 사용합니다.
    /// </summary>
    public class SimulationListRowView : MonoBehaviour
    {
        [SerializeField] private TMP_Text nameText;
        [SerializeField] private TMP_Text userText;
        [SerializeField] private TMP_Text dateText;

        [SerializeField] private Button rowButton;
        [SerializeField] private Image backgroundImage;

        [Header("선택 색상")]
        [SerializeField] private Color normalColor = new Color(1f, 1f, 1f, 0f);
        [SerializeField] private Color selectedColor = new Color(0.9f, 0.9f, 0.9f, 1f);

        public SimulationRowData Data { get; private set; }

        public event Action<SimulationListRowView> OnClicked;

        private void Awake()
        {
            if (rowButton != null)
            {
                rowButton.onClick.AddListener(() => OnClicked?.Invoke(this));
            }
        }

        /// <summary>
        /// 행에 데이터를 바인딩합니다.
        /// </summary>
        public void SetData(SimulationRowData data)
        {
            Data = data;

            if (nameText != null)
                nameText.text = data.name ?? "";

            if (userText != null)
                userText.text = data.User?.userid ?? "";

            if (dateText != null)
                dateText.text = FormatDate(data.createdAt);
        }

        /// <summary>
        /// 선택 상태를 설정합니다.
        /// </summary>
        public void SetSelected(bool selected)
        {
            if (backgroundImage != null)
                backgroundImage.color = selected ? selectedColor : normalColor;
        }

        /// <summary>
        /// 서버에서 받은 날짜 문자열을 표시용으로 포맷합니다.
        /// "2026-02-23 07:53:14.669396+00" → "2026-02-23 16:53:14" (로컬 시간)
        /// </summary>
        private string FormatDate(string dateString)
        {
            if (string.IsNullOrEmpty(dateString)) return "";

            if (DateTimeOffset.TryParse(dateString, CultureInfo.InvariantCulture,
                DateTimeStyles.None, out var dto))
            {
                return dto.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss");
            }

            return dateString;
        }

        private void OnDestroy()
        {
            if (rowButton != null)
                rowButton.onClick.RemoveAllListeners();
        }
    }
}